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1.1 root 1: Fri Jul 19 18:56:14 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2:
3: * cse.c (canon_reg): Allow for recursive call returning 0 (if we had
4: an EXPR_LIST).
5: * sched.c (init_aliases_analysis): Ignore REG_EQUAL note when its value
6: is an EXPR_LIST.
7: * unroll.c (loop_iterations): Likewise.
8:
9: * rs6000.md (andsi3): Fix typo in and-with-cc pattern.
10:
11: Fri Jul 19 11:23:22 1991 Tom Wood (wood at dg-rtp.dg.com)
12:
13: * toplev.c (set_target_switch): For TARGET_OPTIONS, set the
14: variable to the variable part of the actual option.
15: * tm-m88k.h, out-m88k.c: Change the use of m88k_short_data.
16:
17: * varasm.c (output_constant_def): Merge get_or_assign_label and
18: delete it. Ensure that ENCODE_SEGMENT_INFO is evaluated before
19: SELECT_SECTION.
20:
21: Thu Jul 18 19:57:45 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
22:
23: * expr.h (MUST_PASS_IN_STACK_BAD_PADDING): Definitions were backwards.
24:
25: Thu Jul 18 17:52:46 1991 Jim Wilson (wilson at wookumz.gnu.ai.mit.edu)
26:
27: * unroll.c: Fix typos in comments.
28: (splittable_regs_updates): New static global variable.
29: Indicates the number of instructions that modify a split biv
30: remaining during the last iteration of a loop, so that the last one
31: can be handled specially.
32: (unroll_loop): Allocate and clear it.
33: (copy_loop_body): Use it to determine how to rewrite an insn
34: modifying a split iv.
35: (find_splittable_regs): When a splittable biv is identified, set it
36: equal to the number of insn modifying the biv.
37: (find_splittable_givs): When a splittable giv is identified, set
38: it to one if this giv is a reg.
39:
40: * unroll.c (copy_loop_body): Instead of trying to special case
41: insns that use start_label, use the label_map to map the start
42: label to the appropriate label for all insns except those that
43: must be inverted and redirected. The former code did not handle
44: tablejumps that used the start_label correctly.
45:
46: * integrate.c (copy_rtx_and_substitute): Don't legitimize an
47: address inside of an ADDRESS rtx. This fails, because this need
48: not be a validate address, but it is always valid in the context
49: it appears in.
50:
51: Thu Jul 18 08:13:56 1991 Tom Wood (wood at dg-rtp.dg.com)
52:
53: * toplev.c (set_target_switch): Support TARGET_OPTIONS for command
54: options with values.
55:
56: * varasm.c (output_constant_def): Set flags with
57: ENCODE_SEGMENT_INFO for strings and constructors.
58: * tm-mips.h (ENCODE_SEGMENT_INFO): Must be a VAR_DECL.
59:
60: * out-m88k.c, tm-m88k.h, m88k.md: Implement a global pool approach
61: to short addressing.
62:
63: * m88k.md (extendsfdf2, truncdfsf2): Use fsub rather than fadd.
64: This conforms to IEEE 754 in all rounding modes except round to
65: negative infinity whereas fadd conforms only in that mode.
66:
67: Thu Jul 18 01:01:37 1991 Eric Youngdale (youngdale at v6550c.nrl.navy.mil)
68:
69: * make-cc1.com: Add command line to compile reg-stack.c, and add
70: reg-stack.obj to the list of files passed to the VMS linker.
71:
72: Thu Jul 18 00:11:00 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
73:
74: * Makefile.in (enquire.o): Need not depend on gnulib.
75: (gnulib2): Renamed from gnulib2.portable.
76: Don't do ranlib.
77: (gnulib2.portable): Just refers to gnulib2.
78: (gnulib1.portable): Don't do ranlib.
79:
80: Wed Jul 17 11:19:09 1991 Michael Meissner (meissner at geech.gnu.ai.mit.edu)
81:
82: * Makefile.in (gcc): Do a -dumpspecs after building gcc so that -B./
83: will override any installed specs in /usr/local/lib.
84: (mostlyclean): Delete *.cpp files which are left if you use
85: -save-temps.
86:
87: Wed Jul 17 06:08:33 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
88:
89: * combine.c (try_combine): When putting I2 and/or I1 into NEWPAT,
90: check for a PARALLEL; if so, just put in the relevant SET instead
91: of making a PARALLEL containing a PARALLEL.
92:
93: Tue Jul 16 18:58:51 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
94:
95: * combine.c (record_value_for_reg): Show we haven't seen the death
96: of a register once we have seen it modified.
97:
98: * reload1.c (reload): If we decide to put a pseudo which used to have
99: a MEM equiv onto the stack, set SOMETHING_CHANGED and reprocess all
100: eliminations and pseudos without scanning the insns.
101:
102: Tue Jul 16 13:17:14 1991 Michael Meissner (meissner at wookumz.gnu.ai.mit.edu)
103:
104: * cplus-decl.c (sigsegv): Make signal handler void for full
105: prototyping systems.
106:
107: Tue Jul 16 12:25:18 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
108:
109: * dbxout.c (dbxout_symbol): Ignore types with no names of any kind.
110:
111: Tue Jul 16 07:12:52 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
112:
113: * stmt.c (pushcase, pushcase_range): Return label in *DUPLICATE,
114: not integer value.
115:
116: * rtlanal.c (reg_referenced_p, reg_overlap_mentioned_p): Allow X to
117: be (cc0) or (pc).
118:
119: * combine.c (subst, case SET): Delete code to remove "unnecessary"
120: SUBREG; code was incorrect and this is done (corrected below) in
121: simplify_comparison.
122: (simplify_comparison): Can only remove SUBREG for equality comparisons.
123:
124: * expr.c (expand_expr, case COND_EXPR): If condition has side effects,
125: ensure we evaluate it before evaluating an arm of the COND_EXPR.
126:
127: Mon Jul 15 21:59:36 1991 James Van Artsdalen (james at bigtex.cactus.org)
128:
129: * rtl.h (FUNCTION_FLAGS_RETURNS_STRUCT): Fix typo in value.
130:
131: Mon Jul 15 22:18:40 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
132:
133: * cccp.c (main): Ignore CPATH if -nostdinc.
134:
135: Mon Jul 15 22:00:02 1991 Michael Meissner (meissner at churchy.gnu.ai.mit.edu)
136:
137: * reload.c (find_reloads): Fix typo (reg_sets_p instead of
138: reg_set_p).
139:
140: Mon Jul 15 21:49:09 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
141:
142: * c-parse.y (stmt): Emit the nop for the start of a loop
143: only after the line number.
144:
145: Mon Jul 15 16:50:51 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edn)
146:
147: * rtlanal.c (reg_set_p): If we are passed an insn, only pass the
148: pattern to note_stores.
149:
150: * local-alloc.c (validate_equiv_mem): A CALL_INSN invalidates all
151: memory.
152:
153: Sun Jul 14 06:34:47 1991 Richard Kenner (kenner at vlsi1.ultra.hyu.edu)
154:
155: * cse.c (last_jump_equiv_class): New variable.
156: (record_jump_equiv): Set it.
157: (cse_insn): Clear it.
158: (cse_around_loop): Invalidate all entries in last_jump_equiv_class.
159: (cse_set_around_loop): Ensure our replacement is cheaper.
160:
161: Sat Jul 13 17:15:30 1991 James Van Artsdalen (james at bigtex.cactus.org)
162:
163: * cplus-decl.c (finish_enum): Fix typo in arguments for finish_decl.
164: * cplus-class.c (finish_struct): Likewise.
165:
166: Fri Jul 12 16:45:02 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
167:
168: * dbxout.c (dbxout_symbol): Don't crash when DECL_NAME is 0.
169:
170: Fri Jul 12 15:38:24 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
171:
172: * expr.c (do_tablejump): Don't write BARRIER between jump and table
173: if they must remain adjacent.
174:
175: * varasm.c (make_decl_rtl): Set REG_USERVAR_P when register name
176: is specified.
177: * integrate.c (subst_constants): Don't substitute for a user
178: variable assigned to a hard register.
179:
180: * reload.c (find_reloads): Add new vars no_{input,output}_reloads to
181: indicate when the corresponding reload type is not permitted; reject
182: an alternative that would try such a reload.
183: * rs6000.md (decrement-and-branch): No longer need kludges to
184: avoid output reloads.
185: Use '0' instead of 'c' for input 1 in alternative 0.
186: Allow operand 0 to be in non-general register.
187:
188: Fri Jul 12 10:54:39 1991 James Van Artsdalen (james at bigtex.cactus.org)
189:
190: * c-decl.c (finish_struct, finish_enum): Fix typo in arguments for
191: finish_decl.
192:
193: * i386.md (bit test patterns): Delete bit tests using implicitly
194: masked bit number operand: the hardware doesn't work like that.
195:
196: Fri Jul 12 09:50:43 1991 Michael Meissner (meissner at spiff.gnu.ai.mit.edu)
197:
198: * tm-hp9k2bsd.h (toplevel): Remove RCS HISTORY log.
199:
200: Thu Jul 11 00:46:48 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
201:
202: * c-parse.y (yylex): Do try signed int for ANSI nondecimal constants.
203:
204: * c-typeck.c (record_format_info): The first time, use xmalloc.
205:
206: Wed Jul 10 18:54:26 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
207:
208: * jump.c (jump_optimize): Fix typo in "if (...) x = a; else x = b;"
209: case: had temp3 instead of temp4.
210:
211: * cplus-lex.c (lineno, end_of_file): Move definition to before
212: first use.
213: (reinit_parse_for_block): Variable `c' must be int to ensure EOF fits.
214: * cplus-input.c (getch): Remove extraneous declaration of end_of_file.
215:
216: * reload1.c: Include insn-flags.h.
217: (emit_reload_insns): Handle the case where we reload an entire
218: address; use "reload_load_address" pattern, if it exists.
219: Remove explicit SImode reference; should have been Pmode, but
220: IN can be used instead of rebuilding it.
221: * Makefile.in (reload1.o): Includes insn-flags.h.
222:
223: * reload.c (find_reloads): If replacing an output REG with a MEM,
224: write a CLOBBER for the REG after the insn.
225: * reload1.c (eliminate_regs): Add new arg INSN; if nonzero, add a
226: CLOBBER when replacing a REG in SET_DEST with a MEM.
227: (reload, eliminate_regs_in_insn): Add new arg to eliminate_regs.
228: * dwarfout.c (output_bound_representation, location_attribute):
229: Likewise.
230:
231: * reload1.c (reload): If a reg_equiv_memory_loc isn't strictly valid
232: and isn't sufficiently simple, use a stack slot instead.
233: (alter_regs): Don't delete reg_equiv_init insns here.
234: (reload_as_needed): Do it here.
235:
236: * stor-layout.c (get_best_mode): Correct test for alignment.
237:
238: * loop.c (move_movables): Don't get confused by NOTE insns in gnulib
239: call sequence.
240:
241: Wed Jul 10 18:40:32 1991 Matthew Self (mself at geech.gnu.ai.mit.edu)
242:
243: * cccp.c (enum node_type): Added T_WARNING.
244:
245: * cccp.c (directive_table): Added #warning.
246:
247: * cccp.c (do_warning): Print warning message and continue.
248:
249: Wed Jul 10 18:38:28 1991 Matthew Self (mself at geech.gnu.ai.mit.edu)
250:
251: * c-parse.y, objc-parse.y (attrib): Pass "format" attribute
252: through. Takes one identifier and two constants as args.
253: identifier must be either printf or scanf.
254:
255: * c-common.c (decl_attributes): Process "format" attributes.
256: Call new routine record_format_info().
257:
258: * c-typeck.c (struct function_info): Changed function_ident field;
259: store identifier node rather than char * to speed lookup.
260: Renamed arg_num field to format_num. Replaced is_varargs field
261: with new first_arg_num field.
262:
263: * c-typeck.c (check_format): Modified to use new arg_num and
264: first_arg_num fields.
265:
266: * c-typeck.c (record_format_info): New routine. Replaces static
267: table of functions to check.
268:
269: * cplus-typeck.c (record_format_info): New stub routine so c++
270: will link. Someone should implement format checking for c++.
271:
272: * c-typeck.c (init_format_info_table): New routine to add
273: entries for ANSI functions to table.
274:
275: * c-decl.c (init_decl_processing): Call init_format_info_table().
276:
277: * c-typeck.c (build_function_call): Modified to use dynamic table
278: rather than static one. Compare identifier nodes rather than
279: using strcmp().
280:
281: * gcc.texinfo (): Document "format" attribute.
282:
283: * c-typeck.c (check_format): Call warning() directly rather than
284: returning the warning string. This way we can give multiple warnings
285: by continuing. Several changes to make continuing safe.
286:
287: * c-typeck.c (build_function_call): Incorporated changed return
288: value of check_format().
289:
290: * c-typeck.c (check_format): Check for NULL format string.
291:
292: Wed Jul 10 16:40:54 1991 Tom Wood (wood at dg-rtp.dg.com)
293:
294: * sdbout.c (sdbout_tags): Delete this and use the TYPE_DECL
295: representation of tagged types. Types are now output in their
296: original lexical order.
297: (sdbout_symbol): Return early (only using sdbout_one_type) when a
298: tagged type is encountered.
299: (sdbout_block, sdbout_symbol): Don't use sdbout_tags.
300: * toplev.c (compile_file): Don't use sdbout_tags.
301: * varasm.c (assemble_function): Don't use sdbout_tags.
302:
303: Wed Jul 10 15:13:33 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
304:
305: * dbxout.c (dbxout_tags): Function deleted. Calls deleted too.
306: (dbxout_tagged_type): New function.
307: (dbxout_symbol): Call that.
308: * toplev.c (compile_file): Call to dbxout_tags deleted.
309:
310: * c-parse.y (yylex): Simplify choice of type for integers.
311: When traditional, all integers are signed unless explicitly unsigned.
312:
313: Wed Jul 10 13:35:27 1991 Tom Wood (wood at dg-rtp.dg.com)
314:
315: * configure (m88k-svr4): Needs make-m88ksvr4.
316: * make-m88ksvr4: New file.
317:
318: Wed Jul 10 13:18:03 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
319:
320: * c-decl.c (duplicate_decls): Warn if `inline' is not consistent.
321:
322: * cccp.c (hack_vms_include_specification): Fix typos.
323:
324: Tue Jul 9 22:21:22 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
325:
326: * loop.c (find_and_verify_loops): RETURN insns aren't listed in
327: loop_number_exit_labels, so don't try to remove JUMP_LABEL of a
328: RETURN from that list.
329:
330: * rtlanal.c (reg_referenced_between_p): New function.
331: * jump.c (jump_optimize): Use it instead of reg_used_between_p when
332: checking for "if (...) x = a; else x = b;" case.
333:
334: Tue Jul 9 13:03:53 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
335:
336: * expr.c (move_block_to_reg): Don't force_const_mem on non-constant.
337:
338: Tue Jul 9 09:13:32 1991 Tom Wood (wood at dg-rtp.dg.com)
339:
340: * c-decl.c (finish_struct): Record tagged types as a TYPE_DECL
341: with a NULL DECL_NAME.
342: (finish_enum): Ditto.
343: * cplus-decl.c (finish_enum): Ditto.
344: * cplus-class.c (finish_struct): Ditto.
345:
346: * dbxout.c (dbxout_symbol): Ignore TYPE_DECLs for tagged types.
347: * cplus-dbxout.c (dbxout_symbol): Ditto.
348: * sdbout.c (sdbout_symbol): Ditto.
349:
350: * toplev.c (compile_file): DECL_NAME may be null.
351:
352: * dwarfout.c (output_symbol): Use output_dies_for_tagged_type for
353: TYPE_DECLs of tagged types.
354: (dwarfout_output_tagged_type): Deleted.
355: (output_dies_for_tagged_type): Mark TREE_ASM_WRITTEN early.
356:
357: Mon Jul 8 19:36:44 1991 Tom Wood (wood at dg-rtp.dg.com)
358:
359: * jump.c (jump_optimize): Check for extra labels when detecting
360: "if (...) x = a; else x = b;". Include the insn for "x = a;" when
361: testing for data conflict.
362:
363: Mon Jul 8 19:34:14 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
364:
365: * integrate.c (copy_for_inline, case MEM): Must copy a MEM even if
366: it has a constant address if that address involves a LABEL_REF.
367:
368: * rtlanal.c (reg_set_p): Only check for REG_INC notes and a CALL_INSN
369: if we are passed an insn.
370: * local-alloc.c (optimize_reg_copy): Remove tests now done in
371: reg_set_p.
372:
373: Mon Jul 8 16:38:49 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
374:
375: * c-parse.y (yylex): Pedantic warning here for `asm'.
376: No warning for `__asm__'.
377: (maybe_type_qual, maybeasm, extdef): No warning here.
378:
379: * objc-actions.c: Rename OBJC_SELS_R_INTS to OBJC_INT_SELECTORS.
380: Rename OBJC_UNIQUE_SELS to OBJ_NONUNIQUE_SELECTORS, reversing sense.
381: Eliminate OBJC_SELS_R_STRUCT_PTRS.
382:
383: Mon Jul 8 06:37:00 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
384:
385: * rtlanal.c (reg_{used,set}_between_p): Allow FROM_INSN == TO_INSN;
386: return 0 in that case.
387:
388: * jump.c (mark_jump_label): Fix typo in use of GET_RTX_LENGTH.
389:
390: * reload.c (reload_strict_low): Change comment to say that this is
391: always zero; we don't use it any more.
392:
393: Sun Jul 7 22:14:13 1991 Michael Meissner ([email protected])
394:
395: * tm-mips.h (FRAME_POINTER_REQUIRED): Fix typo that required a frame
396: if alloca was not called, instead of the reverse.
397:
398: Sun Jul 7 17:14:17 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
399:
400: * cccp.c (struct file_buf): New field system_header_p.
401: Everything that pushes on instack now initializes this field.
402: (finclude): New arg to set that field. Callers changed.
403: (do_include): Pass that arg as 1 for <...>, else 0.
404:
405: * cccp.c (do_include): Warn for first use of #import
406: except in system header files.
407: (handle_directive): Support #import if compiling for Next.
408:
409: * cccp.c (do_pragma): For #pragma once, warn it is obsolete.
410:
411: Sun Jul 7 14:29:04 1991 James Van Artsdalen (james at bigtex.cactus.org)
412:
413: * tm-att386.h (NO_DOLLAR_IN_LABEL): Define this here,
414: * tm-i386sco.h (NO_DOLLAR_IN_LABEL): not here.
415:
416: Sun Jul 7 06:20:03 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
417:
418: * rtlanal.c (reg_set_p): Return 1 if REG is found in a REG_INC
419: note or if INSN is a CALL_INSN and REG is a hard reg.
420: (reg_set_last): Only return a register or constant; if returning a
421: register, ensure it isn't modified between the SET we found and INSN.
422:
423: * jump.c (jump_optimize): If SMALL_REGISTER_CLASSES, don't make a
424: store-flag insn if any register involved is a hard reg.
425:
426: Sat Jul 6 14:51:15 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
427:
428: * expr.c (expand_assignment): Don't abort for volatile structure field
429: even if the structure is in a register.
430: NOTE: This leaves the problem of implementing whatever meaning
431: a volatile field should actually have.
432:
433: * fold-const.c (div_and_round_double): Make lnum and lden unsigned.
434: Use the small-denominator algorithm only for denom < 2**24.
435: Fix backward conditionals in ?: operators in general case.
436: Change i + j to i - 1 + j when indexing num.
437:
438: Fri Jul 5 21:36:57 1991 Ken Raeburn (raeburn at watch.com)
439:
440: * genpeep.c (match_rtx, case MATCH_OP_DUP): Output semicolon after
441: "goto" statement.
442:
443: Fri Jul 5 09:45:56 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
444:
445: * rs6000.md (andsi3): Bias alternatives so we always prefer constants.
446: (define_splits of DImode, SFmode, and DFmode): Don't split
447: unless after reload.
448: (ashldi3, lshrdi3): Fix bugs in instruction order; use & in
449: output constraint so can't conflict with operand 2; use '0'
450: constraint to allow operands 0 and 1 to be the same register.
451:
452: * regclass.c (reg_n_sets): Move definition before use.
453:
454: * reorg.c (fill_simple_delay_slots): Candidate for delay slot cannot
455: set anything set between it and the delay insn.
456:
457: * jump.c (jump_optimize): In "if (...) x = a; else x = b;", correctly
458: specify range to check if X is used or set.
459: Use rtx_equal_p to check for matching X.
460:
461: Thu Jul 4 15:55:45 1991 Tom Wood (wood at geech.gnu.ai.mit.edu)
462:
463: * cccp.c (default_include): Add /usr/mach/include for MACH systems.
464:
465: * configure (m88k-luna): Needs make-m88kluna.
466: * make-m88kluna: New file.
467:
468: * dwarf.h: New file derived from the UNIX International
469: Programming Languages Special Interest Group DWARF specification.
470: * dwarfout.c (includes): Include "dwarf.h".
471: (subscript_data_attribute): Use FMT_CODE to encode array subscripts.
472: (languagribute): LANG type no longer provided by dwarf.h.
473: (output_source_file_die): Determine proper language attribute.
474:
475: Thu Jul 4 12:14:16 1991 James Van Artsdalen (james at bigtex.cactus.org)
476:
477: * cplus-xref.c: define rindex if USG
478:
479: Thu Jul 4 12:36:55 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
480:
481: * gcc.c (process_command): Correctly split -L from its arg.
482: * SWITCHES_NEED_SPACES: New host machine option.
483: This really ought to be defined now for certain hosts,
484: but I don't know which ones they are.
485:
486: Wed Jul 3 23:31:00 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
487:
488: * tm-m68k.h (ASM_OUTPUT_FLOAT): Check CROSS_COMPILE (there was a typo).
489:
490: Wed Jul 3 22:05:55 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
491:
492: * cse.c (simplify_binary_operation, case MINUS): Fix typo in op number.
493:
494: * cse.c (cse_basic_block): Correctly handle the case where TO
495: was a label with zero uses at the end of the function.
496:
497: * combine.c (significant_valid): New variable.
498: (combine_instructions): Turn significant_valid off until after
499: we finished computing reg_significant.
500: (significant_bits): Ignore reg_significant when significant_valid
501: is zero.
502:
503: * rtlanal.c (reg_set_last): Go past CALL_INSN as long as we are not
504: looking for a hard register.
505:
506: Wed Jul 3 21:07:18 1991 Jim Wilson (wilson at wookumz.gnu.ai.mit.edu)
507:
508: * sched.c (schedule_block): When computing what registers are dead
509: at the end of the current block, correctly handle REG_DEAD notes
510: that refer to multi-word hard registers.
511:
512: * loop.c (mark_loop_jump): When invalidating loops with multiple
513: entries, must invalidate every nested loop containing the target
514: of a loop entry jump, except for those that also contain the jump
515: itself.
516:
517: * loop.c (record_giv): When computing whether a giv is
518: replaceable, check whether the biv update has a valid luid, and
519: mark it as not replaceable if not.
520:
521: * combine.c (gen_rtx_combine): Call rtx_alloc instead of gen_rtx,
522: because it is much faster, especially on some RISC machines.
523:
524: * fixincludes: Add optional argument which indicates where to put
525: the fixed include files. Echo the directory name where the
526: include files will be put.
527:
528: * cccp.c (struct default_include): Don't examine
529: STANDARD_INCLUDE_DIR or /usr/local/include when
530: NO_STANDARD_INCLUDE_DIR is defined. This is useful when building
531: cross compilers.
532: (main): Only send SIGPIPE signal if the SIGPIPE signal exists on
533: the host.
534: (rescan, handle_directive, skip_if_group, validate_else,
535: skip_to_end_of_comment, macarg1, discard_comments): Accept '//' as
536: a comment in Objective-C as well as C++. The Objective C language
537: specifies that '//' starts a comment.
538:
539: * .gdbinit (ptn): Define new macro to print out the name of a type
540: node.
541:
542: * stab.def: Correct errors in table for values of DSLINE and
543: BSLINE. Document the conflict between BROWS and BSLINE. Document
544: the value of the BROWS field.
545:
546: Tue Jul 2 23:26:20 1991 Michael Meissner (meissner at pogo.gnu.ai.mit.edu)
547:
548: * mips-tfile.c (toplevel): Add a comment explaining the MIPS ECOFF
549: file format at the start of the file.
550:
551: Tue Jul 2 14:00:39 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
552:
553: * c-typeck.c (build_array_ref): Report error here if the "array"
554: is not an array or pointer. Don't leave this for the PLUS_EXPR.
555:
556: * cccp.c: Inlcude containing file names/lines in error messages.
557: (print_containing_files): New function.
558: (error*, warning): Call it.
559: (finclude): Increment input_file_stack_tick when file changes.
560:
561: * cccp.c: Include descrip.h.
562:
563: Tue Jul 2 07:44:19 1991 Tom Wood (wood at geech.gnu.ai.mit.edu)
564:
565: * tm-m88k.h (ASM_OUTPUT_SOURCE_LINE): Define only for SDB.
566: * tm-m88kdgux.h (AS_BUG_*): Support these for now.
567:
568: * c-decl.c (finish_struct): Invoke dwarfout_output_tagged_type
569: only when producing DWARF debugging info.
570: * cplus-class.c (finish_struct): Ditto.
571:
572: Mon Jul 1 23:03:34 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
573:
574: * toplev.c (compile_file): Close stack_reg_dump_file iff STACK_REGS.
575:
576: Mon Jul 1 15:17:57 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
577:
578: * combine.c (set_significant): Ignore CLOBBERs.
579: (simplify_and_const_int, case SUBREG): Only ignore paradoxical SUBREGs
580: if BYTE_LOADS_ZERO_EXTEND.
581: (record_value_for_reg): Fix typo; had I for REGNO.
582:
583: Mon Jul 1 08:28:09 1991 Tom Wood (wood at dg-rtp.dg.com)
584:
585: * final.c (output_source_line): Output DWARF line numbers.
586:
587: * dwarfout.c (dwarfout_output_tagged_type): New function.
588: * c-decl.c (finish_struct): Call it.
589: * cplus-class.c (finish_struct): Call it.
590:
591: * dwarfout.c (includes): Need insn-config.h and reload.h.
592: (location_attribute): Use eliminate_regs for correct expression.
593: (output_bound_representation): Use SAVE_EXPR_RTL to get rtl and
594: then use eliminate_regs.
595:
596: * reload1.c (reload): When finished, indicate reg_equiv_constant
597: and reg_equiv_memory_loc are no longer valid.
598: (eliminate_regs): Don't attempt use of reg_equiv_constant or
599: reg_equiv_memory_loc if they aren't valid. No longer static.
600: * reload.h: Declare eliminate_regs.
601:
602: * toplev.c (compile_file): Only call dwarfout_file_scope_symbol
603: for VAR_DECLs.
604:
605: Sun Jun 30 15:49:39 1991 Ken Raeburn (raeburn at watch.com)
606:
607: * expr.c (expand_builtin, case BUILT_IN_MEMCPY): If alignment test
608: fails, and function was really BUILT_IN_STRCPY, zero out length
609: parameter before expanding call.
610:
611: Sun Jun 30 18:27:14 1991 Richard Kenner (kenner at vlsi1.ultra.nyu)
612:
613: * jump.c (jump_optimize): In "if (...) x = a; else x = b;", don't
614: move the "x = b;" if the test modifies X or if X is a hard register
615: and SMALL_REGISTER_CLASSES is defined.
616: Turn "if (...) x = 1; else {...} if (x) ..." code on when we have cc0.
617:
618: Sun Jun 30 13:49:03 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
619:
620: * gnulib2.c (__builtin_saveregs):
621: For i860, make data structure fit in with va-i860.h.
622:
623: * tree.c (gcc_obstack_init):
624: Support OBSTACK_CHUNK_ALLOC and OBSTACK_CHUNK_FREE.
625:
626: * calls.c (prepare_call_address): 3rd arg now address of chain var.
627: (expand_call): Call changed.
628: * expr.c (emit_library_call): Call changed.
629:
630: * function.c (fix_lexical_addr): In recursive call, pass slot address.
631:
632: * Makefile.in (cse.o): Added deps.
633:
634: * Makefile.in (GNULIB2_CFLAGS): Use -O2.
635:
636: * gnulib1.c, gnulib2.c (abort): Undefine only if defined.
637:
638: * genattr.c (main): Fix typo in comment end.
639:
640: Sat Jun 29 21:57:28 1991 Torbjorn Granlund (tege at zevs.sics.se)
641:
642: * longlong.h (__sparc8__ umul_ppmm): Insert 3 nop:s for wr delay.
643: * longlong.h (___IBMR2__): Define umul_ppmm, add_ssaaaa, sub_ddmmss..
644: * longlong.h (__sparc__): Don't call .umul; expand asm instead.
645: Don't define __umulsidi3 (i.e. use default definition).
646:
647: Sat Jun 29 06:25:19 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
648:
649: * tm-vax.h (CPP_SPEC): New macro.
650: (LIB_SPEC): Handle -mg.
651:
652: * cccp.c (install_builtins): Fix backward test of objc.
653:
654: * fold-const.c (size_int): No need to test sign of NUMBER.
655:
656: * gcc.c (process_command): Split -L from its arg.
657:
658: * gcc.c (S_ISREG): Define if not defined.
659: (delete_temp_files): Use it.
660:
661: * limits.h (UCHAR_MAX, CHAR_MAX, USHRT_MAX): Delete `U'.
662: (LONG_MAX, ULONG_MAX): Add `L'.
663:
664: Fri Jun 28 22:22:58 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
665:
666: * Makefile (realclean): Delete stage1, stage2, stage3.
667:
668: * gcc.c (fatal) [HAVE_VFPRINTF]: Do print program name.
669:
670: Fri Jun 28 15:34:08 1991 Jim Wilson (wilson at wookumz.gnu.ai.mit.edu)
671:
672: * out-sparc.c (output_block_move): Correctly handle the case where
673: the size is not a CONST_INT, and has a value of 0.
674:
675: * flags.h (flag_no_inline): Modify comment to match the one in
676: toplev.c.
677:
678: * integrate.c (copy_rtx_and_substitute): When creating new rtx,
679: make sure all of the new bitfields are copied, e.g.
680: REG_LOOP_TEST_P, LABEL_OUTPUT_LOOP_P, etc.
681:
682: * loop.c (loop_optimize): Call reg_scan after
683: find_and_verify_loops, because it may change register lifetimes.
684: (find_and_verify_loops): After moving a block of code outside the
685: loop, must readjust the loop_number_exit_label and
686: LABEL_OUTSIDE_LOOP_P data of the modified jump and the moved jump.
687: toplev.c (rest_of_compilation): Delete reg_scan call before
688: loop_optimize.
689:
690: Fri Jun 28 13:16:37 1991 Michael Meissner (meissner at osf.org)
691:
692: * tm-mips.h (toplevel): Add target_flags to externals declared.
693: (toplevel): Add dslots_number_nops, mips_load_reg{,2},
694: mips_fill_delay_slot external declarations for delay slot reorg.
695: (CC1PLUS_SPEC): By default, pass -fno-gnu-binutils to cc1plus.
696: (TARGET_FLAGS): Add -mwc8, -mwc16, -mwc32 to set size of wchar_t,
697: though the switches are not used right now.
698: (TARGET_FLAGS): Add -msoft-float code from [email protected] to compile
699: on systems w/o floating point.
700: (TARGET_FLAGS): -mdebugf suppresses filling load delay slots.
701: (HARD_REGNO_OK): Relax constraints, allow anything in GP
702: registers, anything in even FP registers, int's only in multiply
703: and divide registers, int/CC in the FPSW register.
704: (FRAME_POINTER_REQUIRED): Require frame if alloca is called for
705: now.
706: (REG_CLASS_FROM_LETTER): Index from an array (mips_char_to_class)
707: instead of having lots of ?:'s. Also, allow 'd' to signify GP
708: registers.
709: (ENCODE_SEGMENT_INFO): Only record things being in small data/bss
710: if -mgpOPT (-O sets by default), -O, and -G xx where xx > 0.
711: (FINAL_PRESCAN_INSN): Rework to automatically not fill the
712: previous instruction's load delay slots with nop's if it is safe.
713: (ASM_OUTPUT_LABEL): If compiling collect, don't use assemble_name.
714: (ASM_GLOBALIZE_LABEL): If compiling collect, don't use
715: assemble_name.
716: (ASM_OUTPUT_LABELREF_AS_INT): Define this for collect.
717: (ASM_OUTPUT_INT): If collect, don't use output_addr_const.
718:
719: * mips.md (all floating point): If -msoft-float, don't allow any
720: floating point builtin operations.
721: (all patterns): Use 'd' constraint to limit things to GP
722: registers, rather than 'r'. This allows unions of
723: float/int/double to occupy any registers.
724: (*extend*): Call mips_move_1word to handle loads, which in turn
725: sees if we can omit the load nop.
726: (fix_trunc*): Redo, since register allocator can handle moving to
727: the appropriate register set.
728: (movdf_xfer*): Use explicit return's instead of falling through
729: and having the appropriate value in a register from the previous
730: call.
731: (movsf_xfer*): New patterns to accomidate unions of floats and
732: int's.
733: (movsi_unaligned): New define_expand to call either movsi_ulw or
734: movsi_usw. Also, if not a memory operation, use movsi.
735: (movsi_ulw): Set up to omit load delay nop if we can.
736: (movsi_usw): Use memory_operand instead of simple_memory_operand.
737: Also, allow storing 0 to an unaligned location.
738: (various move patterns): mips_move_1word now takes a third
739: argument to specify whether a load should sign or zero extend.
740: (call_value): Use register_operand on return value.
741: (probe): Turn into define_expand, and set a register to the
742: contents of memory pointed to by the stack pointer with volatil
743: set.
744:
745: * out-mips.c (toplevel): Add new global variables:
746: dslots_number_nops, mips_load_reg{,2}, mips_regno_to_class,
747: mips_char_to_class.
748: (simple_memory_operand): If not optimizing, no global memory
749: reference is assumed to be in the GP area.
750: (mips_fill_delay_slot): New function to tell FINAL_PRESCAN_INSN
751: the current insn is a load and may need a nop.
752: (mips_move_1word): Take a third argument to say whether load byte
753: and load half-word sign extend or zero extend. Change all
754: callers. If this is a load, call mips_fill_delay_slots to
755: schedule the nops. Change all return's to setting a variable, and
756: falling through to the end.
757: (mips_move_2words): If this is a load, call mips_fill_delay_slots
758: to schedule the nops. Change all return's to setting a variable,
759: and falling through to the end.
760: (function_arg): if -msoft-float, floating point is passed in GP
761: registers.
762: (override_options): Initialize mips_char_to_class.
763: (print_operand): %( and %) no longer do .set nomacro.
764: (print_operand): %# prints #nop if gas or -mstats.
765: (print_operand): Check for too many %), %], and %>'s.
766: (compute_frame_size): Allocate space in stack to hold FP, just in
767: case we later need a FP and previously thought we could eliminate
768: it.
769: (save_restore): Take a string to indicate the 2word load/store to
770: use, but don't use it at present. Change all callers. Home
771: varargs registers with sd if we can.
772: (function_epilogue): Deal with one or more outstanding nop's from
773: FINAL_PRESCAN_INSN.
774: (function_epilogue): Revamp -mstats output format.
775: (function_epilogue): Zero new global variables.
776:
777: * make-decrose (toplevel): Sort make variables.
778: (CLIB): Add -lld library.
779: (LANGUAGES): Add build of collect-osf and g++.
780: (ULTRIX_DIR): Change internal work directory location.
781: (cplus-lex.o): Don't optimize to avoid problem with 1.39 compiler.
782: (collect-osf): Add rules to build OSF/rose version of collect.
783:
784: * make-mips (LANGUAGES): Add build of g++.
785:
786: * tm-decrose.h (SIZE_TYPE): Specify to be long unsigned int.
787: (PTRDIFF_TYPE): Specify to be long int.
788: (WCHAR_TYPE): Specify to be long unsigned int.
789:
790: * sdbout.c (plain_type_1): Add support for unknown tags if
791: SDB_ALLOW_UNKNOWN_REFERENCES is defined. The MIPS ECOFF support
792: needs this, but standard COFF typically doesn't allow unknown
793: references.
794:
795: * gcc.texinfo (Debugging Info): Document
796: SDB_ALLOW_UNKNOWN_REFERENCES and SDB_ALLOW_FORWARD_REFERENCES.
797:
798: * collect-osf.c (whole file): New file to provide collect support
799: on OSF/rose.
800:
801: Fri Jun 28 09:20:18 1991 Tom Wood (wood at dg-rtp.dg.com)
802:
803: * configure (m88k-luna): New target.
804: * tm-m88kluna.h: New file for the Omron Luna/88k.
805: * xm-m88k.h: Don't use USG for the luna88k.
806:
807: * tm-m88kdgux.h: DG/UX implements coff and elf. Currently elf is
808: a strange variant of coff that's non-standard (it uses SDB
809: debugging info for example). Soon, the DG/UX elf will support
810: DWARF. These changes provide transitional support for all three.
811: (DWARF_DEBUGGING_INFO, SDB_DEBUGGING_INFO): Define both.
812: (VERSION_0300_SYNTAX): True when -msvr4 and -mversion-03.00.
813: * tm-m88ksvr4.h (ASM_FILE_END, ASM_OUTPUT_DWARF_LINE): Move these
814: to tm-m88k.h. They are dwarf specific.
815: * tm-m88k.h (TARGET_SWITCHES): Add -mversion-03.00 and -mdwarf.
816: (OVERRIDE_OPTIONS): If using version 03.00 syntax, assume DWARF_DEBUG.
817:
818: * tm-m88k.h (REG_ALLOC_ORDER): Adapt slightly for using r26-r29.
819:
820: * out-m88k.c (m88k_debugger_offset): Don't complain if the base
821: register is optimized away.
822:
823: Thu Jun 27 21:43:36 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
824:
825: * local-alloc.c (memref_referenced_p, memref_used_between_p):
826: New functions.
827: (update_equiv_regs): Call memref_used_between_p.
828:
829: Thu Jun 27 19:59:36 1991 Ken Raeburn (raeburn at watch.com)
830:
831: * print-tree.c (print_node): Changed the various "lang_#" strings to
832: indicate which of several possible fields are being examined; new
833: strings are "tree_#", "decl_#", "type_#".
834:
835: Thu Jun 27 15:05:43 1991 Michael Meissner (meissner at churchy.gnu.ai.mit.edu)
836:
837: * xm-mips.h (ONLY_INT_FIELDS): Define if not compiling with GCC
838: since the MIPS compiler treats enum bitfields as signed.
839:
840: Wed Jun 26 19:48:16 1991 Jim Wilson (wilson at wookumz.gnu.ai.mit.edu)
841:
842: * sched.c (memrefs_conflict_p): Explicitly handle case where both
843: X and Y are CONST.
844: (sched_analyze_2): Do create dependencies for insns with REG_EQUIV
845: notes.
846: (sched_note_set): Correctly handle the case where the destination
847: register is a multi-word hard register.
848: (attach_deaths): Don't add a REG_DEAD note to an insn with a
849: REG_UNUSED note that mentions the same register. Correctly handle
850: the case where the destination register is a multi-word hard
851: register.
852: (schedule_block): Also call sched_note_set for CLOBBERs when
853: computing which registers are dead at the end of the basic block.
854: Also call sched_note_set for USEs when computing what registers
855: are still live after a just scheduled insn.
856: (regno_use_in): New function, subroutine of split_hard_reg_notes.
857: Searches an rtx for any reference to the given register, and
858: returns the register rtx used if any.
859: (split_hard_reg_notes): New function. Handles the case where a
860: multi-word hard register with a REG_DEAD note gets split. Creates
861: a new REG_DEAD note for each part of the original hard register
862: used by the split insns.
863: (new_insn_dead_notes): Don't add a REG_DEAD note to an insn with a
864: REG_UNUSED note which mentions the same register.
865: (update_links): Add call to new function split_hard_reg_notes.
866: Correctly handle the case when the dest of the original insn was a
867: multi-word register which was split in the split insns. In this
868: case, the dest is no longer killed here, so must remove the
869: REG_DEAD on the last previous insn in this basic block which used
870: dest, if any such exists.
871:
872: * unroll.c (reg_dead_after_loop): Check that a CODE_LABEL which is
873: the target of a JUMP_INSN has a non-zero PREV_INSN field before
874: trying to derefence it. Fail if there is no previous insn.
875:
876: * loop.c (scan_loop): Fix typo.
877: * local-alloc.c (optimize_reg_copy): Likewise.
878: * global-alloc (hard_reg_copy_preferences): Likewise.
879: * gcc.texinfo (REG_LOOP_TEST_P): Likewise.
880: * optabs.c (expand_float): Likewise.
881: * tm-vaxv.h (ASM_OUTPUT_ASCII): Likewise.
882:
883: * out-sparc.c (output_move_double): Sign extend CONST_INTs that
884: feed DImode targets.
885: * tm-sparc.h (GO_IF_LEGITIMATE_ADDRESS): Don't accept a LABEL_REF
886: as a legal address. Also, delete obsolete parts of preceeding
887: comment.
888:
889: * reload1.c (alter_reg): Only try to delete the reg_equiv_init
890: insn if it hasn't already been deleted by a previous call to
891: delete_dead_insn.
892:
893: * toplev.c (main): Handle -gdbx in addition to -gsdb for
894: orthogonality.
895: * gcc.texinfo: Document -gdbx.
896:
897: Tue Jun 25 09:57:08 1991 Tom Wood (wood at dg-rtp.dg.com)
898:
899: * m88k.md (casesi): Don't emit a barrier; the dispatch code must
900: adjoin the table.
901: * tm-m88k.h (DONT_REDUCE_ADDR): Don't use this.
902: (CONDITIONAL_REGISTER_USAGE): The PIC register is also call-used.
903: * out-m88k.c (m88k_layout_frame): Save the PIC register.
904:
905: Tue Jun 25 07:40:43 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
906:
907: * function.c (expand_function_end): FNDECL should
908: be CURRENT_FUNCTION_DECL.
909:
910: * combine.c (find_split_point): If we see an AND operation as the
911: first operand of some non-AND operation, use it as a split point.
912: (subst): Add counter to limit restarts, go to restart more often.
913: (subst, case AND): If we get (ior (and (X C1) C2)) and can't
914: restart more than once, rewrite with C1 as small as possible and exit.
915:
916: * cse.c (cse_end_of_basic_block): Don't put branch in our path more
917: than once.
918: (cse_main): Clear PATH_SIZE when skipping a block.
919: (cse_basic_block): Use GET_RTX_CLASS.
920:
921: Tue Jun 25 07:39:29 1991 Matthew Self (mself at next.com)
922:
923: * varasm.c (const_hash, compare_constant_1, record_constant_1):
924: For ADDR_EXPR's, don't hash address of SYMBOL_REF. Only use
925: offset and name of symbol. This allows constructors which
926: contain pointers to identical string literals to be uniqued.
927:
928: * loop.c (loop_optimize, init_loop): Moved call to
929: gcc_obstack_init() from loop_optimize() to init_loop().
930:
931: * reload1.c (reload, init_reload): Moved call to
932: gcc_obstack_init() from reload() to new function init_reload().
933:
934: * toplev.c (compile_file): Call new function init_reload().
935:
936: Mon Jun 24 16:05:57 1991 Jim Wilson (wilson at wookumz.gnu.ai.mit.edu)
937:
938: * stmt.c (expand_end_stmt_expr): Fix typo in comment.
939:
940: * reload1.c (modes_equiv_for_class_p): Only fail if registers in
941: CLASS that can hold ALLOCATE_MODE can't also hold OTHER_MODE. Do
942: not fail for the reverse test. ALLOCATE_MODE is always a larger
943: or same size mode as OTHER_MODE, and will be the mode that reload
944: uses when allocating spill registers. Rewrite comments to explain
945: new behaviour.
946: (reload): Change call to modes_equiv_for_class_p to match new
947: semantics.
948:
949: * combine.c (simplify_shift_const): When simplifying (ashiftrt
950: (ashift inner_const_int) const_int), was checking the wrong number of
951: high order bits of inner_const_int. Also correct typos in comments.
952:
953: * c-convert.c (convert_to_integer): Must also check ARG1 for
954: unsignedness, because ARG0 could be a constant when EXPR is a
955: MINUS_EXPR.
956:
957: * combine.c (try_combine): When splitting, it is not safe to use
958: I2DEST if it is referenced by NEWPAT.
959:
960: * combine.c (distribute_notes): After converting REG_DEAD notes to
961: REG_UNUSED notes, clear PLACE if it already has a REG_UNUSED note,
962: to prevent adding a duplicate REG_UNUSED note.
963:
964: * gcc.texinfo (SIGNED_CHAR_SPEC): Document.
965:
966: Mon Jun 24 10:02:32 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
967:
968: * cse.c (cse_set_around_loop): Ensure the insn we find in front
969: of the loop does the set in the proper mode.
970:
971: * optabs.c (expand_float): Always do conversions to FMODE in the
972: signedness of the input.
973:
974: * reload.c (find_reloads, find_reloads_toplev): If reg_equiv_address
975: is not a constant address, copy it in case it is shared.
976:
977: * reload1.c (eliminate_regs): Copy reg_equiv_memory_loc in case
978: it is shared and we make a reload inside it.
979:
980: * stupid.c (stupid_mark_refs): Registers that aren't used must die
981: in the insn after their birth so they conflict with other outputs.
982:
983: * vax.md: Replace patterns to convert (and (ashiftxx))
984: into (and (rotatexx)) with the patterns that are actually made
985: by combine.
986: We can allow offsettable addresses for operand 0 and it is not
987: early-clobber.
988:
989: * out-rs6000.c (secondary_reload_class): Correctly interpret result of
990: true_regnum.
991:
992: * out-rs6000.c (output_toc): Write FP constants in TOC.
993: * tm-r6000.h (TARGET_FP_IN_TOC): New flag.
994: (TARGET_SWITCHES): Add -mfp-in-toc and -mno-fp-in-toc.
995: (TARGET_DEFAULT): -mfp-in-toc is the default.
996: (ASM_OUTPUT_SPECIAL_POOL_ENTRY_P): FP constants may be put in the TOC.
997:
998: Mon Jun 24 00:52:44 1991 James Van Artsdalen (james at bigtex.cactus.org)
999:
1000: * out-i386.c (output_fix_trunc): If the dest operand mentions the
1001: stack pointer, then we must adjust it to account for the temporary
1002: space we allocate on the stack here.
1003:
1004: Sat Jun 22 07:24:33 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1005:
1006: * cse.c (cse_set_around_loop): Fix typo in call to note_mem_written.
1007:
1008: * emit-rtl.c (reorder_insns): Correctly handle case when AFTER is last
1009: insn.
1010:
1011: * expr.c (expand_expr, case COND_EXPR): Correctly handle X ? A : X + 1.
1012: Previous change called invert_truthvalue which can modify EXP; we now
1013: call it a second time to undo its action if do_store_flag fails.
1014:
1015: Sat Jun 22 02:37:59 1991 James Van Artsdalen (james at bigtex.cactus.org)
1016:
1017: * cse.c (cse_set_around_loop): Don't try to initialize an
1018: automatic structure.
1019:
1020: * reg-stack.c (compare_for_stack_reg): If both operands to a
1021: compare are the same stack reg, don't process death on the second.
1022:
1023: * i386.md (all float patterns): Don't allow constants in the
1024: operand predicates.
1025: (all patterns using convert_387_op): Split patterns into one using
1026: FLOAT and another using FLOAT_EXTEND.
1027:
1028: Fri Jun 21 20:37:03 1991 Tom Wood (wood at dg-rtp.dg.com)
1029:
1030: * sched.c (line_note, line_note_head): New vectors for use when
1031: dealing with line-number notes.
1032: (unlink_notes): Put line-number notes in LINE_NOTE for reuse.
1033: (schedule_block): Just before reordering the insns, walk the insns
1034: and record the line-number note in effect for each one. When
1035: reordering is complete, restore the line-number notes as needed.
1036: (schedule_insns): When debugging information is present, allocate
1037: and initialize line_note and line_note_head. After scheduling,
1038: walk the insns to delete redundant line-number notes.
1039:
1040: Fri Jun 21 19:54:29 1991 Jim Wilson (wilson at wookumz.gnu.ai.mit.edu)
1041:
1042: * old-sparc.c, out-old-sparc.c, tm-old-sparc.h: Delete obsolete
1043: files.
1044:
1045: * loop.c (loop_number_exit_labels): Expand comment. Mention that
1046: returns are not included because all bivs and givs are pseudos and
1047: hence must be dead after a return.
1048:
1049: Fri Jun 21 07:10:56 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1050:
1051: * combine.c (subst, case PLUS, MINUS): Remove cases for things like
1052: (x-y)+y; now done in simplify_binary_operation.
1053: * cse.c (simplify_unary_operation): Handle (sign_extend (truncate ..))
1054: as used in casesi patterns.
1055: (simplify_binary_operation, case PLUS, MINUS): Don't do most
1056: simplifications if IEEE floating-point.
1057: Add cases for things like (x-y)+y.
1058: (fold_rtx): Replace PC with LABEL_REF if we are immediately in
1059: front of a jump table.
1060: Move code to apply associative law to after we have folded the
1061: operands.
1062: (fold_rtx, case MEM): Fix errors in checking for index of jump
1063: table being out of range.
1064: For ADDR_DIFF_VEC, return a MINUS or (truncate (minus L1 L2)).
1065: (fold_rtx, case PLUS): If we have (plus X (label_ref L)), see
1066: if X is equivalent to (minus L1 L2).
1067: (cse_insn): Put (minus L1 L2) in `src_const' so it gets in a
1068: REG_EQUAL note and gets put in the hash table.
1069: If we are branching to a jump table, we are really branching to
1070: immediately after the jump table
1071: Remove special-case kludge for ADDR_DIFF_VEC; now handled properly.
1072:
1073: * vax.md (casesi): Make pattern agree with machine instruction;
1074: specifically, index is multiplied by two and the comparison is LEU,
1075: not LE.
1076:
1077: * cse.c (equiv_constant): If X is a one-word SUBREG of a larger
1078: quantity, use `lookup_as_function' to see if it is equivalent
1079: to a CONST_INT.
1080:
1081: * jump.c (squeeze_notes): No longer static.
1082: * loop.c (find_and_verify_loops): Need to call squeeze_notes when
1083: moving block of code (see last change).
1084:
1085: * reload.c (find_reloads): When forcing constant to memory,
1086: set recog_operand to the result of find_reloads_toplev.
1087:
1088: * combine.c (subst, case PLUS): Add (c1 - a) + c2 -> (c1+c2) - a.
1089: (subst, case MINUS): Use simplify_binary_operation rather than
1090: making CONST_INT from subtraction of two INTVAL's to ensure it
1091: gets truncated as appropriate for its mode.
1092: Add (c1 - (c2 - a)) -> (c1-c2) + a.
1093:
1094: * a29k.md (negdf2): Use operand_subword_force, not operand_subword.
1095: (movsf): Use operand_subword, not gen_lowpart.
1096:
1097: * out-rs6000.c (u_short_cint_operand): New function.
1098: (print_operand): Support auto-decrement.
1099:
1100: * tm-rs6000.h (OVERRIDE_OPTIONS): Force profiling off.
1101: (PREFERRED_RELOAD_CLASS): Return NO_REGS for real CONST_DOUBLE.
1102: (HAVE_PRE_DECREMENT): Define this.
1103: (GO_IF_LEGITIMATE_ADDRESS, GO_IF_MODE_DEPENDENT_ADDRESS):
1104: Support PRE_DEC.
1105:
1106: * rs6000.md (zero_extendxx): Use rlinm, not andil so we avoid
1107: clobbering cr0.
1108: (arith-and-record patterns): Correct some bad operand numbers.
1109: Put SImode output as operand 0 to improve register tying.
1110: (andsi): Prefer rlinm over andil and andiu.
1111: (load/store-with-update): Add patterns for these instructions.
1112: (allocate_stack): New, replaces stack probe.
1113: (add-and-compare): New patterns, with define_split.
1114: (subtract-one-and-jump): Allow outputs anywhere; handle with
1115: match_scratch and define_split.
1116:
1117: * stmt.c (expand_end_stmt_expr): If `last_expr_value' is 0, set it
1118: to const0_rtx.
1119:
1120: * regclass.c (reg_n_sets): Move definition to before use.
1121:
1122: * jump.c (find_cross_jump): Don't try to substitute REG_EQUAL
1123: values unless they are constants.
1124:
1125: Fri Jun 21 02:37:59 1991 James Van Artsdalen (james at bigtex.cactus.org)
1126:
1127: * reload1.c (reload): Don't clear after_call for each insn.
1128:
1129: Sun Jun 16 17:28:43 1991 James Van Artsdalen (james at bigtex.cactus.org)
1130:
1131: * reload1.c (reload, reload_as_needed, choose_reload_regs): Enable
1132: code to avoid return register when SMALL_REGISTER_CLASSES defined.
1133:
1134: * final.c (final_scan_insn): Don't look for no-op moves if
1135: processor has STACK_REGS.
1136:
1137: * hard-reg-set.h (GO_IF_HARD_REG_EQUAL): New macro.
1138:
1139: * jump.c (cross_jump_death_matters): New variable.
1140: (find_cross_jump): If processor has STACK_REGS, compare death
1141: notes if they matter.
1142:
1143: * toplev.c (compile_file, rest_of_compilation): Support new
1144: stack-regs conversion pass.
1145: (main, compile_file, rest_of_compilation): Add support for -dk to
1146: dump after stack-regs conversion.
1147: * reg-stack.c: New file. Implements stack-regs conversion pass.
1148: * Makefile.in (reg-stack.o): New file.
1149:
1150: * tm-i386.h (STACK_REGS): New macro.
1151: (all register macros): Define all eight float point registers.
1152: (HARD_REGNO_NREGS): Only one float reg is needed for any mode.
1153: (HARD_REGNO_MODE_OK): Move code here from out-i386.c.
1154: (FIRST_STACK_REG,LAST_STACK_REG): New macros.
1155: (ARG_POINTER_REGNUM): Move to reg 16.
1156: (FP_REGNO_P): Recognize all float regs.
1157: (QI_REG_P): New macro.
1158: (STACK_REG_P,NON_STACK_REG_P,STACK_TOP_P): New macros.
1159: (PRESERVE_DEATH_INFO_REGNO_P): Delete.
1160: (OVERLAPPING_REGNO_P): Delete.
1161: (CONST_OK_FOR_LETTER_P): Recognize constant mask for byte or word.
1162: Recognize constant 0..3 for `lea' shifts.
1163: (CONST_DOUBLE_OK_FOR_LETTER_P):
1164: (PREFERRED_RELOAD_CLASS): Don't put CONST_DOUBLE in float regs.
1165: QImode must go in class Q_REGS. Float regs can't hold MODE_INT.
1166: (MOVE_RATIO): New macro.
1167: (SHIFT_COUNT_TRUNCATED): Delete. Bit opcodes don't truncate.
1168: (RTX_COSTS): New macro.
1169: (CONST_COSTS): Make constants cheaper.
1170: (QI_HIGH_REGISTER_NAMES): Renamed from QI_REGISTER_NAMES_TOP.
1171: (INSN_CLOBBERS_REGNO_P): Delete.
1172: (FP_TOP,RETCOM,POP_ONE_POP,FP_CALL1,FP_CALL): Delete.
1173:
1174: * out-i386.c (fp_pop_level): Delete.
1175: (fp_call_internal, output_asm_insn_double_reg_op, via_memory,
1176: fp_store_sf,fp_pop_sf,fp_store_df,fp_pop_df,fp_pop_int,
1177: fp_push_sf,fp_push_df,output_movsf,output_movdf,output_movf,
1178: top_dead_p,call_top_dead_p,fp_top_dead_p1,mentioned_fp_top): Delete.
1179: (hard_regno_mode_ok): Moved to tm-i386.h.
1180: (qi_high_reg_name): New variable.
1181: (output_op_from_reg, output_to_reg): New function.
1182: (singlemove_string,output_move_const_single): No longer static.
1183: (singlemove_string): Use correct operand number in `push' string.
1184: (standard_80387_constant_p): Use recommended method to extract
1185: float from CONST_DOUBLE.
1186: (PRINT_REG): Add 'h' for "high" register names, 'y' for "st(0)".
1187: (print_operand): Code 'z' prints no size suffix for stack regs.
1188: Print DImode suffix as "ll", not just "l".
1189: (output_fix_trunc): New argument `insn'. Generalize to output to
1190: MEM or REG. Return "char *" like other output routines.
1191: Generalize for SImode or DImode output.
1192: (binary_387_op,convert_387_op,float_op,fix_op,shift_op): New
1193: match_operator predicates.
1194: (output_387_binary_op,output_float_compare): New functions.
1195:
1196: * i386.md (all MODE_FLOAT patterns): Replace with new code to use
1197: all FPU registers.
1198: (all patterns): Use AS2 and AS1 macros where possible, for
1199: eventual support of Intel syntax output.
1200: (tstM): Don't initialize operands unless we need to.
1201: (cmpM): Choose operange order in output for speed on i386.
1202: (logical test patterns): The operands commute. If possible,
1203: SImode tests should use just QImode.
1204: (movstrictM): New patterns.
1205: (movqi): Don't allow a constant of unknown value into Q_REGS.
1206: (`lea' pattern): Move after addsi3.
1207: (addsi3): Do three operand adds with `lea'.
1208: (divsi3,divhi3,udivsi3,udivhi3): Delete in favor of u?divmodM4.
1209: (divqi3,udivqi3): Remove earlyclobber for operand 0.
1210: (andM3): Define three operand ANDs for 255 and 65535 using zero
1211: extend opcode. Also directly do an AND in the second byte of a
1212: register.
1213: (iorM3,xorM3): Do byte ior instead of word where possible.
1214: (xorqi3): Allow operands[2] from MEM.
1215: (ashlsi3): Allow three-operand shift of 0..3 with `lea' opcode.
1216: (lshlM3): Redundant, delete.
1217: (shift & rotate patterns): Print %0 as destination operand.
1218: (bit recognizers): New patterns to set, clear and compliment.
1219: (call insns): Use "%P" code for targets to support Intel syntax.
1220: (movstrsi): Express changes to the operands instead of just
1221: clobbering them. Don't accept non-constant move count, as our
1222: code isn't as efficient as a library call.
1223:
1224: Thu Jun 20 13:51:02 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1225:
1226: * cse.c (cse_insn): If we fold a conditional or computed branch to an
1227: unconditional branch, it is now not in the normal format for an
1228: unconditional branch, and it only has one set, delete it and
1229: re-emit it.
1230: Whenever we make an unconditional branch, set `cse_skip_to_next_block'
1231: and do nothing else.
1232: (cse_basic_block): Increment LABEL_NUSES on TO if it is a label
1233: so it won't go away while we are using it as a stopping point.
1234: If we are done with this block (`cse_skip_to_next_block' nonzero),
1235: pretend we just did the insn before TO.
1236: Decrement LABEL_NUSES of TO if it is a label; if it became zero,
1237: delete it and try to extend the basic block.
1238:
1239: * reload.c (find_reloads): Fix typo in check for no alternatives
1240: found.
1241:
1242: * combine.c (reg_significant, significant_mode): New vars.
1243: (combine_instructions): Allocate and initialize reg_significant.
1244: (set_significant): New function.
1245: (significant_bits, case REG): Use reg_significant, if non-zero
1246: as the significant bits of a register.
1247:
1248: * loop.c (n_times_set): Define -2 to mean that a register is
1249: an candidate to be moved and is a constant.
1250: (scan_loop): Set n_times_set to -1 or -2 as appropriate.
1251: (regs_match_p): No need to check REG_FUNCTION_VALUE_P.
1252: A register and a constant can be equal if the register is known
1253: equivalent to the constant.
1254: (invariant_p): Check n_times_set < 0, not == -1.
1255:
1256: * rtl.h (REG_LOOP_TEST_P): New macro.
1257: * jump.c (duplicate_loop_exit_test): Mark registers used only in
1258: loop exit test.
1259: * cse.c (cse_around_loop, cse_check_loop_start, cse_set_around_loop):
1260: New functions.
1261: (cse_end_of_basic_block): Add new arg to say if we are being called
1262: after loop.c has run; if we are being called after loop.c, we can
1263: ignore NOTE_INSN_LOOP_ENDs.
1264: (cse_main): Accept new AFTER_LOOP arg; pass to cse_end_of_basic_block.
1265: If we are called before loop.c, see if we can cse around to the
1266: start of a loop.
1267: * toplev.c (rest_of_compilation): Tell cse_main if it is being called
1268: before or after loop.c.
1269:
1270: * rtl.h (LABEL_OUTSIDE_LOOP_P): New macro.
1271: * loop.h (uid_loop_num): Renamed from luid_loop_num and now
1272: maps INSN_UID to loop number instead of INSN_LUID.
1273: * loop.c (loop_optimize): Modifications for the above.
1274: (find_and_verify_loop): Change luid_loop_num to uid_loop_num.
1275: Look for blocks of code ending in an unconditional branch out
1276: of the loop surrounded by a conditional branch and try to move
1277: such a block out of the loop.
1278: (mark_loop_jump): Change luid_loop_num to uid_loop_num.
1279: Mark all LABEL_REFs that are outside the current loop, for
1280: branch prediction.
1281: (strength_reduce, check_dbra_loop): Change luid_loop_num to
1282: uid_loop_num.
1283: * unroll.c (unroll_loop, find_splittable_{regs,givs}): Likewise.
1284: (reg_dead_after_loop, final_{biv,giv}_value): Likewise.
1285:
1286: * flow.c (reg_n_sets): Don't define this here.
1287: * regclass.c (reg_n_sets): Define it here.
1288: (reg_scan): Allocate and initialize reg_n_sets.
1289: (reg_scan_mark_refs): Count sets of a register in reg_n_sets.
1290:
1291: * sched.c (reg_known_value_size): New variable.
1292: (canon_rtx): Don't look in reg_known_value outside its allocated space.
1293: (init_alias_analysis): Initialize reg_known_value_size.
1294:
1295: * loop.c ({unknown,fixed}_aggregate_altered): Deleted.
1296: (loop_store_mems): Replaces loop_store_addrs and loop_store_widths.
1297: (loop_optimize): Call init_alias_analysis.
1298: (prescan_loop, note_addr_stored): Save all MEMs stored into, rather
1299: than just those that appear fixed; save MEMs rather than addresses
1300: and widths.
1301: (invariant_p): Use true_dependence to see if a MEM is invariant;
1302: compare it with all MEMs stored during the loop.
1303:
1304: * sched.c (memrefs_conflict_p): If XSIZE or YSIZE is zero
1305: the object conflict if they have the same base, irregardless
1306: of the offsets.
1307:
1308: * reorg.c (dbr_schedule): Reallocate unfilled_firstobj after
1309: freeing memory from the obstack.
1310:
1311: * reload.c (push_reload): Always reload object inside SUBREG if
1312: STRICT_LOW_PART is present.
1313: Always set RELOAD_STRICT_LOW to zero; maybe we should get rid of it.
1314:
1315: * reload.c (make_memloc): Copy the address if it varies to avoid
1316: potential sharing problems.
1317:
1318: * global-alloc.c (hard_reg_copy_preferences): New var.
1319: (global_alloc): Allocate and initialze it.
1320: (prune_preferences): Prune it.
1321: (find_reg): Try preferences in hards_reg_copy_preferences first,
1322: then hard_reg_preferences.
1323: (set_preference): Set bit in hard_reg_copy_references, if appropriate.
1324:
1325: * emit-rtl.c (try_split): If we are splitting a JUMP_INSN, copy
1326: JUMP_LABEL from the old to new insn update the count of that label.
1327:
1328: * cse.c (lookup): Always call exp_equiv_p unless we have a REG.
1329:
1330: * cse.c (insert): If we are making a register equivalent to a
1331: constant that was already equivalent to a constant, update
1332: qty_const_insn.
1333: (cse_insn): Don't do it here.
1334: * cse.c (fold_rtx): Always call simplify_unary_operation.
1335:
1336: * cse.c (record_jump_equiv): Don't get primary elements for OP0 and
1337: OP1 since they might not be valid.
1338:
1339: * loop.c (get_condition): Accept new arg, EARLIEST that is a pointer
1340: to where we place the earliest insn used to form the condition.
1341: Check for comparison with CC0 in main loop, not earlier.
1342: Never return condition involving CC0.
1343: (get_condition_for_loop): Call get_condition with new arg.
1344: * jump.c (jump_optimize): When we make store-flag insn, put new
1345: insns before earliest insn used to form condition and use new
1346: psuedo as target, which we copy into VAR immediately after the insn
1347: that currently sets VAR.
1348: Turn off "if (...) x = 1; else {...} if (x) ..." code; it is not
1349: correct and can't be easily fixed.
1350: (get_label_{before_after}): Use {prev,next}_nonnote_insn.
1351:
1352: * jump.c (jump_optimize): Don't interpret NOOP_MOVES as meaning
1353: "after_reload"; check reload_completed instead. Don't pass NOOP_MOVES
1354: to functions that aren't actually trying to noop moves.
1355: (follow_jumps, tension_vector_labels): Don't accept AFTER_RELOAD arg;
1356: check reload_completed instead.
1357:
1358: * combine.c (try_combine): Don't check that we don't have a
1359: single_set when trying to replace a SET_DEST in a PARALLEL in I2.
1360: (simplify_and_const_int): Always do the AND in the mode passed.
1361: (significant_bits, case DIV and UDIV): Nothing special known
1362: about low-order bits here.
1363: (simplify_shift_const, shift cases): Don't go into infinite loop if
1364: we combine two shifts in the same direction.
1365:
1366: * c-parse.y, cplus-parse.y, objc-parse.y (set_yydebug): Move to
1367: end of file so we don't have a reference to yydebug after its
1368: definition; also delete duplicate declaration.
1369:
1370: Thu Jun 20 09:08:21 1991 Tom Wood (wood at geech.gnu.ai.mit.edu)
1371:
1372: * local-alloc.c (block_alloc): Fixed typo in last edit.
1373:
1374: Wed Jun 19 17:05:52 1991 Jim Wilson (wilson at wookumz.gnu.ai.mit.edu)
1375:
1376: * reload.c (push_reload): Verify reload_in[i] exists before using
1377: GET_CODE on it.
1378:
1379: * m88k.md: USE insns must be immediately before CALL_INSNs to work
1380: properly, otherwise sched.c and reorg.c will not associate them will
1381: the CALL.
1382:
1383: * unroll.c (calculate_giv_inc): Accept constant increments
1384: represented as a LO_SUM.
1385:
1386: * flow.c (mark_used_regs): Don't put a REG_DEAD note on insns that
1387: already have a REG_UNUSED note. This makes it consistent with
1388: combine.c.
1389: * combine.c (distribute_notes): If a REG_UNUSED reg is no longer
1390: set by an insn, but is still used by the insn, then must convert
1391: the REG_UNUSED note to a REG_DEAD note.
1392:
1393: * gcc.c (SIGNED_CHAR_SPEC): Put ifndefs around it, so that it can
1394: be overriden by a definition in the tm.h file.
1395:
1396: * cse.c (cse_insn): Add missing third parameter to find_reg_note calls.
1397:
1398: * tm-arm.h (INIT_CUMULATIVE_ARGS): Take LIBNAME as third argument.
1399:
1400: * combine.c (can_combine_p): Remove extra argument in call to
1401: find_reg_note.
1402:
1403: * rtlanal.c (find_regno_note): Verify that the note contains a
1404: REG before checking its REGNO.
1405:
1406: * cse.c (canon_reg): Fix spacing/punctuation error.
1407: * recog.c (constrain_operands): Likewise.
1408: * tree.h: Likewise.
1409: * varasm.c (Assemble function): Likewise.
1410:
1411: Wed Jun 19 13:14:22 1991 Tom Wood (wood at geech.gnu.ai.mit.edu)
1412:
1413: * local-alloc.c (block_alloc): When counting instructions, abort if
1414: a loop is detected. Improperly threaded insns are easy to produce
1415: when working on the scheduler.
1416:
1417: Sat Jun 15 06:13:11 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1418:
1419: * combine.c (simplify_and_const_int, case ASHIFTRT): Avoid infinite
1420: loop if simplify_shift_const doesn't do anything.
1421:
1422: Thu Jun 13 09:05:12 1991 Tom Wood (wood at dg-rtp.dg.com)
1423:
1424: * m88k.md (decrement_and_branch_until_zero): Add this insn.
1425:
1426: Thu Jun 13 07:32:37 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1427:
1428: * explow.c (plus_constant): Fix error in last change; CONST case
1429: wasn't handled correctly.
1430:
1431: * tm-m68k.h (CONST_CONSTS): Constants between -7 and -1 are cheap
1432: because of subq.
1433:
1434: * m68k.md (dbra): Operand 0 should have '+' constraint, not '='.
1435:
1436: * expmed.c (store_fixed_bit_field): Clean up some confusion between
1437: targets and results in expand_binop calls.
1438:
1439: * local-alloc.c (optimize_reg_copy): Fix several typos relating to
1440: status updating.
1441: Correctly handle the case where DEST dies before SRC.
1442: Fix some comments that had SRC and DEST backwards.
1443:
1444: * combine.c (can_combine_p): Swap order of args of && to avoid
1445: unnecessary calls to use_crosses_set_p.
1446: (simplify_and_const_int, case SUBREG): Make code agree with comment.
1447:
1448: * emit-rtl.c (operand_subword): Avoid compilation warning.
1449:
1450: * expmed.c (store_fixed_bit_field): Don't use OP0 as SUBTARGET
1451: if it is a MEM and -fforce_mem was specified.
1452:
1453: * expmed.c (emit_store_flag): After scc insns, convert to wider
1454: mode using unsigned conversion if STORE_FLAG_VALUE is positive.
1455:
1456: * expmed.c (init_expmed): Use mode of size BITS_PER_WORD instead
1457: of SImode.
1458: (store_bit_field, extract_bit_field): Replace references to SImode
1459: with MAXMODE.
1460: (store_fixed_bit_field, extract_fixed_bit_field): Don't use explicit
1461: modes; use get_best_mode instead.
1462: (store_split_bit_field, extract_split_bit_field): Use operand_subword
1463: and mode_for_size instead of making SUBREGs and using SImode.
1464:
1465: * stor-layout.c (get_best_mode): Allow LARGEST_MODE to be VOIDmode,
1466: in which case we can use any appropriate mode.
1467:
1468: Wed Jun 12 16:32:37 1991 Michael Tiemann (tiemann at pogo.gnu.ai.mit.edu)
1469:
1470: * cplus-decl.c (init_decl_processing): Compensate for tm-sparc.h
1471: change to WCHAR_TYPE handling.
1472:
1473: Wed Jun 12 10:19:13 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1474:
1475: * tm-sparc.h (WCHAR_TYPE): Must be "short unsigned int".
1476:
1477: * combine.c (subst, make_extraction, simplify_shift_const): Don't
1478: change mode of volatile MEM; replaces similar change of June 1st.
1479: * function.c (fixup_var_refs_1, optimize_bit_field): Likewise.
1480: * recog.c (validate_replace_rtx_1): Likewise.
1481:
1482: Tue Jun 11 22:09:28 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
1483:
1484: * expr.c (expand_expr, case COND_EXPR): Expressions of both the form
1485: X ? A + 1 : A and X ? A : A + 1 were being done, but only the former
1486: was being handled correctly.
1487:
1488: Tue Jun 11 12:13:53 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1489:
1490: * recog.c (validate_replace_rtx_1): If putting a CONST_INT in a
1491: ZERO_EXTEND or SIGN_EXTEND, try to simplify the operation or fail;
1492: the semantics of the operation require a non-VOIDmode argument.
1493:
1494: * cse.c (delete_dead_from_cse): Don't delete last insn in a libcall.
1495:
1496: * explow.c (allocate_dynamic_stack_space): Don't clobber SIZE when
1497: rounding it.
1498:
1499: * fold-const.c (fold, case COND_EXPR): Ensure we always return an
1500: expression in the correct type.
1501:
1502: * expr.c (emit_push_insn): Don't need to put X in register if it
1503: is constant; operand_subword_force can do so if needed.
1504:
1505: * reload.c (find_reloads): Simplify nested `if' statements.
1506: * recog.c (constrain_operands): Likewise.
1507:
1508: * jump.c (mark_jump_label): Fix typo (extra paren) in last change.
1509:
1510: Tue Jun 11 10:03:08 1991 Micheal Tiemann (tiemann at pogo.gnu.ai.mit.edu)
1511:
1512: * collect2.c: New file.
1513:
1514: * sched.c (memrefs_conflict_p): Finish removing ASHIFT case.
1515:
1516: * emit-rtl.c (operand_subword): Change test of BITS_PER_WORD <
1517: HOST_BITS_PER_WORD from compile-time to run-time.
1518: * expr.c (emit_push_insn): Ditto.
1519: * recog.c (constrain_operands): Ditto.
1520: * reload.c (find_reloads): Ditto.
1521:
1522: * jump.c (jump_optimize): Add `continue' after deleting INSN in case
1523: where further attempts to optimize the insn are invalid.
1524: (mark_jump_label): Don't crash if NEXT == 0.
1525:
1526: Tue Jun 11 09:14:05 1991 Tom Wood (wood at dg-rtp.dg.com)
1527:
1528: * out-m88k.c (legitimize_operand): New function to convert
1529: CONST_DOUBLE to SFmode when possible.
1530: * m88k.md (cmpdf, adddf3, subdf3, muldf3, divdf3): Use it.
1531: * tm-m88k.h: Declare it.
1532:
1533: * xm-m88k.h (OBSTACK_CHUNK_SIZE): For DG/UX at least, the default
1534: value results in a perfect checkerboard.
1535:
1536: Tue Jun 11 07:23:45 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1537:
1538: * expr.c (expand_expr, case FLOAT_EXPR, FIX_EXPR): Don't try to
1539: do any partial conversions here; expand_fix and expand_float now
1540: handle all modes.
1541: * optabs.c (fixtab, fixtrunctab, floattab): Table now contains
1542: all modes.
1543: (can_fix_p, can_float_p): Use mode as index in tables.
1544: (init_fixtab, init_floattab): Likewise.
1545: Add support for QImode and HImode operations.
1546: (expand_float): Rework to remove dependendence on specific modes.
1547: Can only use REAL_VALUE_LDEXP in certain configurations.
1548: (expand_fix): Likewise.
1549: If can't do operation unsigned, or signed into wider mode, emit a
1550: sequence that compares operand with 2**(N-1) and, if larger,
1551: subtracts 2**(N-1), converts, and adds it back.
1552: Protect from queue and force not memory at start.
1553: * m88k.md (fixuns_truncdfsi2, fixuns_truncsfsi2): Deleted; now done
1554: in expand_fix in optabs.c.
1555:
1556: * combine.c (expand_field_assignment): Convert SET_SRC to mode of
1557: INNER.
1558: (simplify_shift_const, case ASHIFTRT): Don't use undefined initial
1559: value of MASK.
1560:
1561: * explow.c: Include insn-config.h, recog.h, and insn-codes.h.
1562: (allocate_dynamic_stack_space): Rework to be more precise in required
1563: alignment. Must maintain alignment of stack to STACK_BOUNDARY at
1564: all times (it must not be momentarily misaligned) and must align
1565: returned address to BIGGEST_ALIGNMENT.
1566: * Makefile.in (explow.o): Show new includes.
1567:
1568: Tue Jun 11 07:22:54 1991 Matthew Self (mself at next.com)
1569:
1570: * m68k.md: Change incorrect reference to -m68040-fp to -m68040-only.
1571: Fix several spelling errors.
1572:
1573: * m68k.md (fix_trunc*f*i2): New insn's to replace fintrz on the
1574: '040. These emit a sequence of insn's to change the rounding mode
1575: to round-to-zero, perform the truncation, and restore the rounding
1576: mode.
1577:
1578: Mon Jun 10 09:57:31 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
1579:
1580: * c-lang.c (GNU_xref_{begin,end}): Add stub functions for xref info.
1581:
1582: * cplus-decl.c (record_builtin_type): Add support for handling
1583: builtin types' nicknames (e.g. "unsigned long" for "long unsigned
1584: int").
1585:
1586: * expmed.c (struct algorithm): Change array size from BITS_PER_WORD
1587: to MAX_BITS_PER_WORD.
1588: gcc.texinfo: Document MAX_BITS_PER_WORD.
1589:
1590: Mon Jun 10 07:45:17 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1591:
1592: * combine.c (try_combine): When making an I1 from an I2 that is
1593: a PARALLEL, give the new I1 the same INSN_UID as I2.
1594:
1595: * recog.c (constrain_operands, case 'p'): Pass operand mode
1596: (from match_operand) to strict_memory_address_p.
1597:
1598: * m68k.md (andsi3): bclr does not set the condition codes in the
1599: standard way.
1600:
1601: Sun Jun 9 11:16:24 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1602:
1603: * reload.c (find_reloads): Swap preferred_class and pref_or_nothing
1604: when we swap commutative operands.
1605:
1606: * combine.c (subst, simplify_shift_const): Treat UDIV and MULT
1607: with a second operand of a constant that is a power of two as the
1608: appropriate shift if it feeds or is fed by a shift.
1609:
1610: * expmed.c (expand_divmod): When searching for the best mode to
1611: perform the computation, take into account the fact that we sometimes
1612: do a shift, not a divide.
1613:
1614: * expmed.c (emit_store_flag): Correctly handle "a = b < 0;" if A
1615: is narrower than B.
1616: Don't check for STORE_FLAG_VALUE equal to just the sign bit of
1617: OP0 if the width of its mode is larger than HOST_BITS_PER_INT.
1618: Use switch rather than if/elseif/elseif.
1619:
1620: * combine.c (simplify_shift_const, shift cases): We were not forming
1621: the mask correctly when VAROP is a LSHIFTRT and narrower than X;
1622: simplify the mask formation by using significant_bits and
1623: simplify_binary_operation.
1624:
1625: * reload.c (make_memloc): Copy RTX_UNCHANGING_P from REG to MEM.
1626: (find_reloads_address, find_reloads_address_1): Don't shortcut
1627: reloading the address in reg_equiv_address; always call
1628: find_reloads_address on it.
1629:
1630: * recog.c (constrain_operands, case 'p'): Validate address if
1631: testing strictly.
1632:
1633: * out-alliant.c, out-m68k.md (output_move_double): Extraction of
1634: parts of CONST_INT was backwards; these machines are words-big-endian.
1635:
1636: Sat Jun 8 12:19:26 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
1637:
1638: * sparc.md: Remove special-case shift insns which load and shift
1639: memory-based operands. Combine now does this for us. Also change
1640: abs patterns so that they consistently print the negation followed
1641: by the mov on a single line.
1642:
1643: * reload1.c (choose_reload_regs): Cast `enum reg_class' values to
1644: `int' when using them as array indicies.
1645:
1646: * gnulib2.c (LONG_TYPE_SIZE): Don't inherit the definition of
1647: LONG_TYPE_SIZE from tm.h, since that may be target_flag-specific.
1648: Instead synthesize the value from `sizeof (long)'.
1649:
1650: * cplus-gc.c (build_m_desc): Figure out whether the i_desc should
1651: constitute a defn of its type or not. Analogous to May 26 change
1652: for instance variables.
1653:
1654: Sat Jun 8 07:11:26 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1655:
1656: * combine.c (simplify_and_const_int): Detect and remove redundant
1657: alignment operation.
1658: (significant_bits, case REG): Realize that the stack pointer might
1659: be aligned.
1660: (significant_bits, case PLUS, MUNUS, MULT, DIV, UDIV): Track low-order
1661: bits of zero as well as high-order zero bits (so we detect alignment
1662: operations).
1663: (record_value_for_reg): If updating a register, try to substitute its
1664: old value into the expression for better tracking of values.
1665:
1666: * a29k.md (fmac/dmac): Delete incorrect patterns.
1667:
1668: Thu Jun 6 19:08:29 1991 Sean Fagan (sef at cygint.cygnus.com)
1669:
1670: * final.c (output_source_line): Say we are on line number 1 if
1671: sdb_begin_function_line is -1, not 0.
1672:
1673: Thu Jun 6 08:01:05 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1674:
1675: * stor-layout.c (get_best_mode): Don't assume GET_MODE_SIZE (SImode)
1676: is UNITS_PER_WORD; if SLOW_BYTE_ACCESS defined, try to return the
1677: mode whose size is UNITS_PER_WORD.
1678:
1679: * sparc.md (floatsisf2, floatsidf2): Add missing mode for
1680: operand 1; use const_int_operand as predicate.
1681:
1682: * cse.c (canon_reg): Add arg INSN; if replacing a pseudo with a hard
1683: register or vice versa, use validate_change to ensure the insn
1684: remains valid.
1685: All callers changed; most pass zero since they validate replacement.
1686: (cse_insn): Use validate_change on result of canon_reg when
1687: required.
1688:
1689: * c-common.c (combine_strings): Use WCHAR_BYTES instead of
1690: UNIT_PER_WORD for the size of a wide char.
1691:
1692: * emit-rtl.c (gen_lowpart_common): Always extract integral modes
1693: from integer CONST_INTs and CONST_DOUBLEs.
1694:
1695: * integrate.c (copy_for_inline, copy_rtx_and_substitute): Don't
1696: try to extract a float from a fixed-mode CONST_DOUBLE.
1697: (copy_for_inline, copy_rtx_and_substitute, restore_constants):
1698: Declare target of REAL_VALUE_FROM_CONST_DOUBLE to be REAL_VALUE_TYPE.
1699:
1700: * local-alloc.c (update_equiv_regs): Fix typo in testing
1701: reg_basic_block.
1702:
1703: Wed Jun 5 09:15:09 1991 Ken Raeburn (raeburn at watch.com)
1704:
1705: * Eliminate unneeded binding levels when overloading template class
1706: names:
1707: * cplus-pt.c (overload_template_name): Accept second argument
1708: classlevel, indicating that new decl should be pushed into current
1709: class binding level; otherwise, assume current level is okay to use.
1710: Callers changed.
1711: (undo_template_name_overload): New second argument classlevel
1712: indicates where binding for variable was made. Callers changed.
1713:
1714: * cplus-parse.y (structsp): Call undo_template_name_overload in all
1715: appropriate cases.
1716:
1717: * Get interface/implementation flags set properly on methods in
1718: class templates, and use it:
1719: * cplus-lex.c (store_pending_inline): If inside a class, walk up
1720: through nested classes to top level looking for template parameters.
1721: For class methods, use current interface flag settings rather than
1722: flags for class.
1723: (extract_interface_info): No longer static.
1724: (do_pending_inlines, process_next_inline): Call
1725: extract_interface_info to get interface flags set properly after
1726: changing file names.
1727: * cplus-pt.c (instantiate_class_template): Ditto.
1728: (end_template_instantiation): Ditto.
1729: (do_pending_expansions): If interface/implementation flags of
1730: containing class are set, use them.
1731: * cplus-tree.h (interface_unknown): Added declaration.
1732:
1733: Wed Jun 5 07:36:44 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1734:
1735: * reload.c (find_reloads_address): Unshare a MEM if its address is
1736: the address of a constant pool location.
1737:
1738: * optabs.c (expand_binop): Fix typos in multi-word addition; had
1739: MODE for SUBMODE.
1740:
1741: * reload1.c (alter_reg): Correctly delete insn that makes a REG
1742: equivalent to a MEM in the case where the MEM is the SET_DEST.
1743:
1744: * a29k.md (negdf2): Add missing alternative in operands 2.
1745: (movdi): Change "i" constraint to "n".
1746: Split for constant integer as input; split cannot fail.
1747: Correct typo in DEFINE_SPLIT (DFmode for DImode).
1748: * out-a29k.c (gen_reg_or_integer_constant_operand): New function.
1749:
1750: * configure: Fix typo in reference to tm-sun3-nfp.h.
1751:
1752: Wed Jun 5 06:56:10 1991 Matthew Self (mself at next.com)
1753:
1754: * c-parse.y, objc-parse.y (attrib): Always pass aligned attribute
1755: through. Return $1 on failure rather than NULL_TREE for consistency.
1756:
1757: * c-common.c (decl_attributes): Warn if requested alignment is not
1758: a power of two. Also warn if decl is not a VAR_DECL or a FIELD_DECL,
1759: since specifying alignment makes no sense for a TYPE_DECL, and is
1760: not implemented for a FUNCTION_DECL.
1761:
1762: * c-parse.y, objc-parse.y (initdcl, notype_initdcl): Call
1763: decl_attributes before finish_decl in order for alignment attribute
1764: to take effect.
1765:
1766: * varasm.c (assemble_variable): Warn if DECL_ALIGN is greater than
1767: MAX_OFILE_ALIGNMENT, if defined. This allows errors to be
1768: detected with formats like a.out which support a maximum alignment
1769: of 4.
1770:
1771: * c-parse.y, objc-parse.y (component_declarator): Call decl_attributes
1772: with correct args.
1773:
1774: * stor-layout.c (layout_record, layout_union): Do not clamp struct
1775: alignment at BIGGEST_ALIGNMENT, since individual fields may have
1776: requested greater alignment than this. This check shouldn't have
1777: done anything anyway.
1778:
1779: * c-parse.y (unary_expr): When alignof is applied to an expression,
1780: call c_alignof_expr so that we can check DECL_ALIGN instead of calling
1781: c_alignof (TYPE_ALIGN (TREE_TYPE (expr))).
1782:
1783: * c-typeck.c (c_alignof_expr): New function to compute alignof for
1784: expr's. Returns DECL_ALIGN for VAR_DECL's and FIELD_DECL's. Also
1785: return 1 after reporting error about applying alignof to bitfields.
1786:
1787: * c-tree.h (c_alignof_expr): Add declaration.
1788:
1789: * varasm.c (assemble_variable): MAX_OFILE_ALIGNMENT defaults to
1790: BIGGEST_ALIGNMENT if not defined in config.h.
1791:
1792: Wed Jun 5 06:55:12 1991 Tom Wood (wood at dg-rtp.dg.com)
1793:
1794: * m88k.md (mov*): Change the interface to emit_move_sequence.
1795: * out-m88k.c (emit_move_sequence): Similar to the sparc version.
1796:
1797: * tm-m88k.h (SIZE_TYPE): Specify as unsigned int.
1798:
1799: * xm-m88k.h (HOST_BITS_PER_LONGLONG): Define.
1800:
1801: Wed Jun 5 01:45:07 1991 Sean Fagan (sef at cygint.cygnus.com)
1802:
1803: * sdbout.c (sdbout_symbol): don't output definition information for
1804: a nested function inside the parent function; this makes COFF
1805: assemblers upset.
1806:
1807: Tue Jun 4 17:35:13 1991 Sean Fagan (sef at cygint.cygnus.com)
1808:
1809: * function.c (trampoline_address): make the RTL_EXPR node temporary,
1810: not momentary, so that the trampoline_list doesn't become garbage.
1811: Fix made by jim wilson ([email protected]).
1812:
1813: Tue Jun 4 09:40:59 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1814:
1815: * expr.c (move_block_to_reg): Fix typo in last change.
1816:
1817: * local-alloc.c (update_equiv_regs): Check for reg_n_refs == 2,
1818: not loop_depth * 2.
1819:
1820: * reorg.c (fill_simple_delay_slots): Clear INSN_DELETED_P on insns
1821: placed in current_function_epilogue_delay_list.
1822:
1823: * make-rs6000 (ALLOCA_FLAGS, ALLOCA_FINISH): Add override to
1824: compensate for the fact that the RS/6000 C compiler has no -S.
1825:
1826: * out-rs6000.c (easy_fp_constant): Use operand_subword.
1827: (print_operand): Use INT_P and INT_LOWPART to allow accepting both
1828: CONST_INT and CONST_DOUBLE for integers.
1829:
1830: * rs6000.md (floatsidf2, floatunssidf2): Rework these to emit only
1831: two insns, each of which has DImode or DFmode operands. Then
1832: split the funny DImode insn to generate it.
1833: (fix_truncdfsi2, fixuns_truncdfsi2): Surround our call with
1834: REG_LIBCALL/REG_RETVAL notes.
1835: Use operand_subword.
1836: (movsf, movdf): Correctly handle a pseudo passed during reload.
1837: Use operand_subword.
1838: Split moves involving "easy" FP constants.
1839: (subtract-and-branch): Disable for now, to avoid output reload in jump.
1840:
1841: * tm-rs6000.h (WCHAR_TYPE): Add definition.
1842: (INT_REGNO_P): Fix typo; register 31 is a normal register.
1843: (LEGITIMATE_CONSTANT_P): The only FP constants that are valid are
1844: the "easy" ones.
1845:
1846: * a29k.md (negdf2): Use XOR when not involving accumulator.
1847: Add SCRATCH so we dont use gr122.
1848: Handle case where input and output are same register.
1849: (negsf2): Use SCRATCH.
1850: (DImode operations): Use operand_subword, not gen_{low,high}_part.
1851: (movsf, movdf, movdi): Always split if we can look inside CONST_DOUBLE.
1852: Use operand_subword.
1853: Don't split into separate words in DEFINE_EXPAND.
1854: * out-a29k.c (in_operand): Account for fact that integer CONST_DOUBLE
1855: is VOIDmode.
1856: (extract_subword): Deleted.
1857: (print_operand): Add macros INT_P and INT_LOWPART so we can accept
1858: either CONST_INT or CONST_DOUBLE.
1859:
1860: * romp.md (movdi, movdf, negsf2, negdf2): Use operand_subword and
1861: operand_subword_force, instead of gen_{high,low}part.
1862: Use force_const_mem instead of force_const_double_mem.
1863:
1864: * m88k.md (movdi): Remove 'F' constraint; 'n' now includes integer
1865: CONST_DOUBLE.
1866: (anddi3, iordi3, xordi3): Likewise.
1867: Use operand_subword to extract individual words.
1868: * out-m88k.c (output_load_const_{float,double,dimode}): Use
1869: operand_subword.
1870:
1871: * Makefile.in (emit-rtl.o): Now includes expr.h.
1872: * calls.c (expand_call): Pass mode to move_block_to_reg.
1873: * combine.c (subst, case SUBREG): Simplify SUBREG of hard register
1874: and some SUBREGs of constants.
1875: (gen_lowpart_for_combine): If object is desired mode, always return it.
1876: Use gen_lowpart_common for most cases; just support MEM and
1877: surrounding with a SUBREG here.
1878: * cse.c (insert): CONSTANT_P includes CONST_DOUBLE.
1879: (fold_rtx): Use MODE for GET_MODE (X).
1880: (fold_rtx, case SUBREG): Handle simple cases of folding SUBREGs.
1881: (fold_rtx, case MEM): Use operand_subword and gen_lowpart_if_possible
1882: to get parts of constant instead of gen_lowpart and gen_highpart.
1883: (gen_lowpart_if_possible): Use gen_lowpart_common for most cases.
1884: * expr.c: Include expr.h.
1885: (gen_lowpart_common): New function, from gen_lowpart.
1886: (gen_lowpart): Use gen_lowpart_common for most cases; just handle MEM.
1887: (gen_highpart): Deleted.
1888: (subreg_lowpart_p): Test WORDS_BIG_ENDIAN in `if', not `#if'.
1889: (operand_subword, operand_subword_force): New functions.
1890: * explow.c (plus_constant): Handle adding CONST_INT to CONST_DOUBLE.
1891: Rework to use switch statement.
1892: Remove obsolete OLD_INDEXING code.
1893: (plus_constant_for_output): Use plus_constant for most cases.
1894: (break_out_memory_refs): Refine which constants get broken out.
1895: * expmed.c (store_bit_field, extract_bit_field): Don't use
1896: gen_highpart for multi-word fields; instead, loop and use
1897: operand_subword. We now support fields more than two words long.
1898: (mask_rtx, lshift_value): Just pass high and low words to
1899: immed_double_const; it will mask and choose CONST_INT vs. CONST_DOUBLE.
1900: * expr.c (convert_move): Use operand_subword instead of gen_highpart.
1901: Don't assume GET_MODE_SIZE (DImode) > UNITS_PER_WORD.
1902: (move_block_to_reg): Add MODE arg.
1903: Use operand_subword_force.
1904: (move_block_from_reg): Use operand_subword.
1905: (move_block_from_reg, move_block_to_reg, use_rgs):
1906: Don't assume GET_MODE_SIZE (SImode) == UNITS_PER_WORD.
1907: (emit_move_insn, emit_push_insn): Likewise.
1908: Use operand_subword and operand_subword_force.
1909: (expand_expr, case INTEGER_CST): Just call immed_double_const.
1910: (expand_expr, cases FIX_TRUNC_EXPR, FLOAT_EXPR): Don't assume
1911: GET_MODE_SIZE (SImode) == UNITS_PER_WORD.
1912: (expand_builtin): Likewise.
1913: (do_jump_by_parts_{greater,equality): Likewise.
1914: Use operand_subword_force.
1915: * expr.h (operand_subword): Remove declaration from here.
1916: (validize_mem): Add missing declaration.
1917: * final.c (final_scan_insn): If assembler code string is "#",
1918: try to split insn.
1919: Ignore insns with INSN_DELETED_P set.
1920: (alter_subreg): Remove erroneous code for CONST_DOUBLE.
1921: (output_addr_const): Integer CONST_DOUBLEs are now VOIDmode.
1922: * fold-const.c (add_double): No longer static.
1923: * integrate.c (copy_for_inline, copy_rtx_and_substitute):
1924: Use validize_mem to validate force_const_mem's result.
1925: (subst_constants, case SUBREG): Use operand_subword and
1926: gen_lowpart_common instead of gen_lowpart and gen_highpart.
1927: (restore_constants): Don't assume all CONST_DOUBLEs are floating.
1928: Use validize_mem to validate force_const_mem's result.
1929: * optabs.c (expand_binop,, expand_unop): Don't assume
1930: GET_MODE_SIZE (SImode) == UNITS_PER_WORD.
1931: Use operand_subword_force.
1932: (operand_subword): Deleted from here. New version in emit-rtl.c.
1933: * recog.c (validate_replace_rtx_1): Check for any constant,
1934: not just CONST_INT.
1935: (constrain_operands, case 'm', 'o'): Any constant OK if strict < 0.
1936: (constrain_operands, case 'E'): Must have host and target word sizes
1937: the same.
1938: (constrain_operands, case 's', 'n'): CONST_DOUBLE can be integer.
1939: * reload.c (find_reloads, case 'm', 'o', 'E', 's', 'n'): Likewise.
1940: Don't call force_const_double_mem; use force_const_mem instead.
1941: (find_reloads_toplev): Likewise.
1942: Use gen_lowpart_common to get low part of constant.
1943: * rtl.h (gen_highpart, force_const_double_mem): Deleted.
1944: (gen_lowpart_common, operand_subword, operand_subword_force):
1945: New declarations.
1946: * varasm.c (const_double_chain): Renamed from real_constant_chain.
1947: (immed_double_const): For integer constants, perform any needed
1948: masking and make either CONST_INT or CONST_DOUBLE.
1949: (force_const_double_mem): Deleted; would need a mode arg added
1950: which would make it almost identical to force_const_mem.
1951: * out-vax.c (split_quadword_operands): Use operand_subword instead
1952: of gen_lowpart and gen_highpart.
1953:
1954: * function.c (find_replacement): New function.
1955: (fixup_var_refs_insns): Pass pointer to listhead of (new)
1956: fixup_replacement structures; if any entries were pseudos, copy from
1957: memory to the pseudo.
1958: (fixup_var_refs_1): New arg REPLACEMENTS; provide that arg in
1959: recursive calls.
1960: Use find_replacements to ensure we don't break any MATCH_DUPs.
1961:
1962: Tue Jun 4 05:07:53 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
1963:
1964: * stmt.c (pushcase, pushcase_range): Take new parameter DUPLICATE.
1965: Use this to store existing LABEL_DECL if LABEL is a duplicate.
1966: * c-parse.y, cplus-parse.y, objc-parse.y, stmt.c: All callers
1967: changed.
1968:
1969: Mon Jun 3 17:19:40 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
1970:
1971: * cplus-expr.c (decl_in_memory_p): New function.
1972: * cplus-typeck.c (mark_addressable): Test `decl_in_memory_p' instead
1973: of testing memory_operand, since the DECL_RTL of a decl may be a
1974: (MEM ...) by not a valid memory address.
1975:
1976: * cplus-typeck.c (mark_addressable): When we decide that a static
1977: const variable must go to memory, make sure that its rtl is
1978: allocated from the correct obstack.
1979:
1980: * cplus-decl.c (grokdeclarator): Replace undocumented BREAK_C_TAGS
1981: #define control with comments explaining why or how it is correct
1982: for GNU C++ to break C's notions of what a tag is.
1983:
1984: * cplus-call.c (convert_harshness): Replace undocumented #if
1985: AMBIGUOUS_WORKING control with a comment explaining the actions
1986: where this control used to be.
1987:
1988: Mon Jun 3 15:07:47 1991 Sean Eric Fagan (sef at kithrup)
1989:
1990: * tm-i386.h (TRAMPOLINE_TEMPLATE): Changed a 040 to 0xe0;
1991: this is the proper code for a jmp [%eax] instruction.
1992:
1993: Mon Jun 3 08:07:42 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1994:
1995: * cccp.c (initialize_builtins): Install __SIZE__TYPE__,
1996: __PTRDIFF_TYPE__, and __WCHAR__TYPE__ as builtins.
1997:
1998: Sun Jun 2 18:18:19 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1999:
2000: * flow.c (mark_set_1): Don't set LAST_MEM_SET from a MEM that has any
2001: side-effects (such as auto-inc), not just volatile MEMs.
2002:
2003: * rtlanal.c (reg_referenced_p): New function.
2004: * combine.c (try_combine): Correct test for added_sets_1 to account
2005: for case where I1 and I2 both feed I3.
2006: (distribute_notes): Don't interpret setting a reg as a use of the
2007: reg; use new reg_referenced_p and simplify code.
2008:
2009: * flow.c (propagate_block): Ensure that LOOP_DEPTH is correct at all
2010: insns in a basic block, otherwise reg_n_refs will be set incorrectly.
2011:
2012: * recog.c (validate_replace_rtx_1): Don't change mode of memory
2013: reference that is mode-dependent.
2014: Don't make a MEM with a larger mode than original.
2015:
2016: * combine.c (try_combine): Disable code to check MODES_TIEABLE_P
2017: added May 20th and 22nd; this should not be needed now that
2018: LIMIT_RELOAD_CLASS has been added to reload.
2019:
2020: * flow.c (mark_set_1): Allow for the fact that stack pushes don't have
2021: REG_INC notes.
2022: * local-alloc.c (optimize_reg_copy): Likewise.
2023: Don't change lives of hard registers #ifdef SMALL_REGISTER_CLASSES.
2024: A USE of a register must not be changed.
2025: (validate_equiv_mem): Don't make an equivalence to volatile MEMs.
2026:
2027: * reorg.c (mark_set_resources): #ifdef PUSH_ROUNDING, mark SP as always
2028: set since the insn might have a (pre_dec sp).
2029:
2030: Sun Jun 2 16:03:31 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2031:
2032: * Makefile.in (libg_dir): Variable deleted.
2033: (install-gnulib): Don't bother creating libg.a.
2034:
2035: * cccp.c (size_type_string, etc.): Variables deleted.
2036: (special_symbol): Use macros SIZE_TYPE, etc., directly.
2037:
2038: Sat Jun 1 12:54:05 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2039:
2040: * Let tm.h specify types for size_t, ptrdiff_t and wchar_t.
2041: (SIZE_TYPE, PTRDIFF_TYPE, WCHAR_TYPE): New params.
2042: * cccp.c, c-decl.c: Provide default definitions of the new params.
2043: * cccp.c (__SIZE_TYPE__, __PTRDIFF_TYPE__, __WCHAR_TYPE__): Builtins.
2044: (special_symbol): Implement them based on new params.
2045: * stddef.h (size_t, ptrdiff_t, wchar_t): Declare using those builtins.
2046: * c-tree.h (ptrdiff_type_node): Declare variable.
2047: * c-decl.c (init_decl_processing): Use *_TYPE params
2048: to control setting of sizetype, wchar_type_node and ptrdiff_type_node.
2049: * c-typeck.c (pointer_diff): Take result type from ptrdiff_type_node.
2050:
2051: * configure (target1): Really change / to -.
2052:
2053: Sat Jun 1 02:49:04 1991 Michael Tiemann (tiemann at cygnus.com)
2054:
2055: * cplus-lex.c (extract_interface_info): Now non-static. Called
2056: whenever INPUT_FILENAME changes.
2057: * cplus-pt.c (instantiate_class_template): Call
2058: `extract_interface_info' when switching files.
2059: * cplus-input.c (getch): Ditto.
2060:
2061: * combine.c (subst): Don't change the mode of memory access for
2062: volatile memory.
2063:
2064: * tm-sparc.h (CONST_COSTS): Fix typo in computing cost of
2065: CONST_DOUBLE for DImode integers.
2066:
2067: Fri May 31 16:11:57 1991 Ken Raeburn (raeburn at watch.com)
2068:
2069: * cplus-lex.c (process_next_inline): Set line number and filename if
2070: more inline data is to be processed.
2071: (store_pending_inline): Treat FUNCTION_TYPE like METHOD_TYPE. Use
2072: current_class_type instead of extracting it from method type; the
2073: two should be the same, and the latter doesn't work for statics.
2074:
2075: * cplus-decl.c (start_decl): When constructing templates, use
2076: original name of function rather than "mangled" name. Look for
2077: FUNCTION_DECL, not FUNCTION_TYPE, when deciding how to push the
2078: new decl.
2079: (start_method): Default inlining does not apply to template
2080: expansions.
2081:
2082: * cplus-pt.c (pending_template_expansions): Moved declaration to
2083: start of file.
2084: (tsubst): For FUNCTION_DECL, use original name of source, not
2085: mangled name.
2086: (instantiate_template): Local variables now non-static. Fill in
2087: pending-inline field of new decl, rather than template-info, and
2088: chain into either pending-inlines or pending-template-expansions.
2089:
2090: * cplus-typeck.c (build_x_function_call): If a template is found,
2091: treat it as an overloaded declaration.
2092:
2093: Fri May 31 14:20:45 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2094:
2095: * Makefile.in (all.cross): New target.
2096: * configure: If cross-compiling, change `ALL' to use all.cross.
2097:
2098: Fri May 31 11:43:31 1991 Matthew Self (mself at next.com)
2099:
2100: * tm-next.h (EXTRA_SECTION_FUNCTIONS):
2101: Add new constructor and destructor sections.
2102: (MAX_OFILE_ALIGNMENT): Define as 2^15 for Mach-O.
2103: (ASM_OUTPUT_ALIGN): Use .align, not .even. Allow alignments > 2.
2104: (CPP_PREDEFINES): Added -Dm68k since some code expects this.
2105:
2106: Fri May 31 05:41:51 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
2107:
2108: * cplus-class.c (pushclass): New argument value for MODIFY accepted.
2109: * cplus-decl2.c (build_push_scope): Call `pushclass' with MODIFY == 3.
2110:
2111: * cplus-decl.c (finish_function): Set TREE_PUBLIC and TREE_EXTERNAL
2112: bits on functions according to #pragma interface/implementation,
2113: regardless of whether or not the function's inline. This fixes the
2114: bug of needless code replication with -fno-inline.
2115:
2116: Thu May 30 17:39:53 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2117:
2118: * expr.c (expand_expr):
2119: Don't lose volatility of fields in COMPONENT_REF.
2120:
2121: Thu May 30 17:36:45 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2122:
2123: * cse.c (count_reg_usage, delete_dead_from_cse): New functions.
2124: * toplev.c (rest_of_compilation): Call delete_dead_from_cse immediately
2125: after the first cse pass.
2126:
2127: * local-alloc.c (validate_equiv_mem_from_store, validate_equiv_mem):
2128: New functions, to find cases where a REG is equivalent to a MEM.
2129: (optimize_reg_copy): New function.
2130: (update_equiv_regs): Call these new functions.
2131: Look for a register used in only one basic block being stored into
2132: memory.
2133: Keep track of loop depth so we can find regs used only once, but
2134: inside a loop.
2135: * reload1.c (reload): Use single_set when looking for an insn
2136: that initializes a register.
2137: If making a REG equivalent to a MEM, the insn with SET_DEST being
2138: the register isn't always the one making the equivalence, since the
2139: equivalence might be occurring due to a store into MEM; in that
2140: case set reg_equiv_init to the latter insn.
2141:
2142: Thu May 30 14:23:01 1991 Ken Raeburn (raeburn at watch.com)
2143:
2144: * Pending expansions processed at end-of-file can be processed out
2145: of order, so freeing the associated data from the obstacks is not
2146: possible.
2147: * cplus-tree.h (struct pending_inline): New field can_free
2148: indicates whether to free the text after processing it.
2149: * cplus-lex.c (do_pending_inline, process_next_inline): If
2150: can_free flag is set, specify inline-text obstack, otherwise null
2151: pointer.
2152: (cons_up_default_function): Clear flag.
2153: (reinit_parse_for_method): Set it.
2154: (store_pending_inline): Clear it when changing obstacks.
2155: (pending_template_obstack): Deleted. References changed to use
2156: permanent_obstack.
2157:
2158: * cplus-lex.c (store_pending_inline): Set DECL_PENDING_INLINE_INFO
2159: value after swapping obstacks, not before.
2160:
2161: Thu May 30 07:23:18 1991 Michael Tiemann (tiemann at cygnus.com)
2162:
2163: * va-sparc.h: Has to be a char * to be compatible with Sun.
2164: i.e., we have to pass a `va_list' to vsprintf. Also, fixed
2165: bug in passing vararg structs.
2166:
2167: Thu May 30 00:32:18 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2168:
2169: * configure: Delete Makefile.tem before writing it.
2170:
2171: * stor-layout.c (layout_record):
2172: Ignore PCC_BITFIELD_TYPE_MATTERS for incomplete type.
2173:
2174: * fixincludes (stdtypes.h): Handle wchar_t like the other types.
2175:
2176: * function.c (assign_parms): Don't declare args_so_far register.
2177:
2178: Wed May 29 15:13:05 1991 Ken Raeburn (raeburn at watch.com)
2179:
2180: * cplus-tree.def (TEMPLATE_PARM_IDX): Deleted.
2181: (TEMPLATE_TYPE_PARM): New node type, looks like a type node.
2182: (TEMPLATE_CONST_PARM): New node type, looks like a const node.
2183:
2184: * cplus-tree.h (IDENTIFIER_TYPE_VALUE_PTR): Inlined under gcc.
2185: (TYPE_IDENTIFIER_PTR): Ditto.
2186: (DECL_NESTED_TYPENAME_PTR): Ditto.
2187: (struct lang_type): New bitfield `use_template'.
2188: (CLASSTYPE_USE_TEMPLATE): Accessor macro for above.
2189: (struct lang_decl): New field `template_info'.
2190: (DECL_TEMPLATE_INFO): Accessor macro for above.
2191: (TEMPLATE_EXPANSION_NAME_P): Deleted.
2192: (push_overloaded_decl_top_level): Added declaration.
2193: (TEMPLATE_TYPE_TPARMLIST, TEMPLATE_TYPE_IDX,
2194: TEMPLATE_TYPE_SET_INFO, TEMPLATE_CONST_TPARMLIST,
2195: TEMPLATE_CONST_IDX, TEMPLATE_CONST_SET_INFO): New macros for
2196: accessing fields of TEMPLATE_..._PARM nodes.
2197: (struct pending_inline): New fields for names and values to bind
2198: to them while processing.
2199: (struct template_info): Definition moved here from cplus-pt.c.
2200: (instantiate_template): Added declaration.
2201: (instantiate_class_template): Ditto.
2202: (processing_template_{decl,defn}): New variable declarations.
2203:
2204: * print-tree.c (print_node): Provide missing argument to
2205: print_node for `bitpos' field. Display `virtual' flag, and (for
2206: function and method types) `class' field; these are only used by
2207: C++ that I'm aware of, but are defined in common code, so they
2208: should be displayed here.
2209:
2210: * cplus-parse.y (template_def): Separate set of derivations, for
2211: class and function templates. Template_def is a type of extdef;
2212: extern_lang_string before template_def is not permitted.
2213: (fn_tmpl_end): New nonterminal, anything that signals the end of
2214: the portion of a template that we should parse.
2215: (yyprint): Define only if YYDEBUG. Handle TYPESPEC.
2216: (datadef): Complain at class template override declaration if that
2217: specialization has already been produced by expansion. Template
2218: definitions no longer belong here.
2219: (tmpl.2): Always call instantiate_class_template; let it decide
2220: whether or not to go through with it.
2221: (template_instantiation): Put decl in global scope only if not
2222: already there.
2223: (typespec, scoped_typename): Scoped typename inside template type
2224: should be a scoped_typename, not a typespec. However, a
2225: template_type should be allowed as a typespec.
2226: (structsp): Don't undo template name overload here. Deleted
2227: derivation from template_type.
2228: (named_class_head_sans_basetype): Don't overload template name.
2229: (LC): Do it here.
2230: (notype_declarator): For scoped_id derivations, don't call
2231: build_push_scope if the scoped_id is a SCOPE_REF.
2232: (scoped_id): Moved old typespec-from-template_type rule here.
2233: Call resolve_scope_to_name only if template parms aren't involved.
2234:
2235: * cplus-pt.c (struct template_info): Definition deleted.
2236: (templates, current_template_info): Variables deleted.
2237: (processing_template_{decl,defn}): New variables.
2238: (push_template_decls, pop_template_decls): Accept parmlist and
2239: arglist as separate arguments, instead of deriving both from the
2240: template. If class_level is non-zero, push and pop a level,
2241: making it transparent to tags. Removed some pointless checks from
2242: pop_template_decls that are only needed in push_template_decls,
2243: and some assertions from both. Callers changed.
2244: (uses_template_parms): Return non-zero iff argument refers to any
2245: TEMPLATE_*_PARM nodes.
2246: (tsubst): Walk tree, substituting for template parms, returning
2247: new tree.
2248: (type_unification): Rewritten a bit, to make it work. New
2249: argument nsubsts is pointer to place to record number of
2250: substitutions made when matching.
2251: (unify): Renamed from unify1. Rewritten completely, to work.
2252: Still may need extending for some tree node types.
2253: (do_pending_expansions): At end-of-file, expand any templates not
2254: yet expanded which were actually needed. Needs work to accomodate
2255: latest specs.
2256: (process_template_parm): Simplified slightly. Non-type parms
2257: should be marked read-only; aggregate types are not allowed, since
2258: equality checks don't work.
2259: (end_template_parm_list): Moved to after process_template_parm.
2260: Push a level, and push decls for TEMPLATE_*_PARMs. Set
2261: processing_template_decl flag.
2262: (end_template_decl): For non-class templates, build a
2263: TEMPLATE_DECL and store the regular decl in its result field.
2264: Context and other values get copied over too. Call poplevel to
2265: get rid of the TEMPLATE_*_PARM decls, and call
2266: dont_forget_overload to avoid losing the declaration later. Clear
2267: processing_template_decl flag. Call get_pending_sizes, so later
2268: function compilation doesn't try to evaluate sizes of templates.
2269: (mangle_class_name_for_template): Convert type/non-type check from
2270: switch to if test. Added support for ENUMERAL_TYPE, REAL_TYPE,
2271: and POINTER_TYPE parms.
2272: (instantiate_class_template): Renamed from old
2273: instantiate_template. Don't expand if type size is set, or if
2274: being-defined flag is set, or use-template flag is non-zero. If
2275: other-template parms are used in the parm list, construct a simple
2276: RECORD_TYPE node and return it. Catch case of template declared
2277: but not defined before use. Renamed argument from class to
2278: classname. Set processing_template_defn flag.
2279: (instantiate_template): New routine; constructs new decl node
2280: given TEMPLATE_DECL node and template arg vector.
2281: (end_template_instantiation): Set use-template field to 2 ("did
2282: use template"). Clear processing_template_defn flag.
2283: (reinit_parse_for_template): Get template-info ptr from decl node.
2284: Store template parm vector in it.
2285: (pending_template_expansions): List of templates that may need
2286: expanding later for function or class data definitions.
2287:
2288: * cplus-method.c (build_overload_value): Ensure tree code is
2289: PARM_DECL. Handle ENUMERAL_TYPE like INTEGER_TYPE. For DImode
2290: values, compare against integer_zero_node instead of constructing
2291: another one. Added support for POINTER_TYPEs. If not
2292: REAL_IS_NOT_DOUBLE, support real values as well.
2293: (build_overload_name): Accept TEMPLATE_*_PARM nodes, but generate
2294: a string that should cause some assembler errors.
2295:
2296: * cplus-ptree.c (print_lang_decl): Retrieve template-info from its
2297: new place.
2298: (print_lang_type): For TEMPLATE_TYPE_PARM, print its (short) info
2299: and return. For RECORD_TYPE, print use-template and interface-*
2300: fields.
2301:
2302: * cplus-search.c (push_class_decls): Don't call
2303: push_template_decls; the bindings of template parameter names
2304: should be associated with the template body, not with the class.
2305: Do overload the template name, however.
2306: (pop_class_decls): Don't call pop_template_decls.
2307:
2308: * cplus-call.c (build_method_call): Changed to recognize
2309: constructor of template class.
2310: (build_overload_call): Add in number of template substitutions as
2311: extra cost of a candidate function. For template decls, try
2312: unification and instantiation before evaluating cost of result.
2313: This too is incorrect in terms of the spec, but it's a starting
2314: point for later work.
2315:
2316: * cplus-class.c (finish_struct): If structure is named, undo
2317: overload of its name as a template.
2318: (pushclass): If prev_class_type was a template class, pop it; the
2319: decls are handled wrong and should be re-entered.
2320:
2321: * cplus-decl.c (poplevel): Assert that the current level is not
2322: global.
2323: (push_to_top_level): Include global scope when looking for old
2324: values, because class bindings aren't listed in any other one
2325: place.
2326: (push_overloaded_decl_top_level): New function; like
2327: push_overloaded_decl, but places decl in global binding level.
2328: (dont_forget_overload): New function; removes decl from list of
2329: overloads to be forgotten when scope is exited.
2330: (start_decl): If template parms are used, construct a
2331: TEMPLATE_DECL node referencing the current decl. For function
2332: templates, call push_overloaded_decl; for class template members,
2333: chain them into the class template definition.
2334: (grokdeclarator): Don't try determining size of a
2335: TEMPLATE_CONST_PARM node. For template class-data decls,
2336: construct a phony VAR_DECL node and return it.
2337:
2338: * cplus-decl2.c (grokfield): For static class data, use
2339: build_overload_name result, instead of copying class name, since
2340: the latter could be a human-readable template class name. (If
2341: NEW_OVERLOAD_SCHEME is not defined, do this only if the class has
2342: a template-derived name.)
2343:
2344: * cplus-lex.c (pending_template_obstack): New variable; obstack
2345: for pending-template stuff to be saved to end-of-file.
2346: (init_lex): Initialize it.
2347: (default_def): New variable; used for default definition of copy
2348: constructors and destructors.
2349: (do_pending_inlines): Figure out whether text is in an obstack,
2350: and which one, for calling feed_input. Push template decls if
2351: needed, as specified in pending_inline data. Pass current
2352: pending_inlines pointer back in PRE_PARSED_FUNCTION_DECL instead
2353: of next.
2354: (process_next_inline): Ditto. Pop pending inline data if needed.
2355: (store_pending_inline): New function. Decides which obstack to
2356: store a pending definition on, and which list to chain it into.
2357: (reinit_parse_for_method): Call it.
2358: (reinit_parse_for_block): If character passed in is '=', look for
2359: a semicolon to end the block; don't require a {} block. Don't pad
2360: to 8 bytes on USG, since we aren't feeding input via stdio any
2361: more. Also, use newlines instead of # directives for advancing
2362: line number only a few lines.
2363: (cons_up_default_function): Punt padding for USG stdio, since we
2364: aren't using it any more. Use default_def for definition. Call
2365: store_pending_inline to save it away.
2366: (identifier_type): For TEMPLATE_DECL, DECL_RESULT field non-null
2367: indicates a non-type template, so don't return PTYPENAME.
2368: (yylex): If end-of-file and input isn't redirected, call
2369: do_pending_expansions and maybe start yylex over. Don't check
2370: TEMPLATE_EXPANSION_NAME_P; a proper name transformation system
2371: will eliminate conflicts. Try for SCOPED_TYPENAME with PTYPENAME
2372: too.
2373:
2374: Wed May 29 11:48:34 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2375:
2376: * cccp.c (do_include): Check that ->control_macro is non-zero.
2377:
2378: * gcc.c (process_command): Use `error' in last change.
2379:
2380: Wed May 29 11:10:12 1991 Tom Wood (wood at dg-rtp.dg.com)
2381:
2382: * m88k.md (movdi): Accept CONST_INT.
2383: * out-m88k.c (output_load_const_dimode): Accept CONST_INT.
2384: (output_call): Don't use #plt for jsr.
2385:
2386: Wed May 29 00:51:36 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
2387:
2388: * cplus-type2.c (build_functional_cast): Give error if functional
2389: cast is missing argument.
2390:
2391: * cplus-tree.h (interface_unknown): Add a declaration for this
2392: variable.
2393:
2394: * cplus-type2.c (store_init_value): Normally initialized PIC data
2395: must be laid into the text segment and then copied into the data
2396: segment. But cecause of special things we do for ctors and dtors
2397: (the only things that can reference such things), we can leave
2398: vtables in initialized data space.
2399:
2400: * cplus-decl.c (finish_decl): Use #pragma interface knowledge if
2401: available for processing initialized variables of type const.
2402:
2403: Tue May 28 18:39:20 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2404:
2405: * sched.c ({true,anti,output}_dependence): Correct MEM_IN_STRUCT_P
2406: code; only avoid conflict if MEM_IN_STRUCT_P ref has varying address.
2407:
2408: * protoize.c (stat): Remove declaration of stat; it is defined
2409: differently (no const in arg 1) on some machines.
2410:
2411: * combine.c (simplify_shift_const): Avoid infinite loops by quitting
2412: when COUNT becomes zero; delete now-unnecessary tests on COUNT.
2413:
2414: * flow.c (last_mem_set): New variable.
2415: (propagate_block): Initialize it.
2416: Show calls can change memory.
2417: (insn_dead_p): Remove unneeded arg STRICT_LOW_OK; don't treat
2418: STRICT_LOW_PART differently than ZERO_EXTRACT.
2419: All callers changed.
2420: If insn stores into the same, nonvolatile, MEM as recorded in
2421: last_mem_set, it is dead.
2422: (mark_set_1): If writing into register mentioned in last_mem_set or
2423: writing into memory, clear last_mem_set.
2424: Record last MEM written.
2425: (find_auto_inc): New function, from mark_used_regs.
2426: Add support for pre-increment and pre-decrement.
2427: (mark_used_regs, case MEM): Clear last_mem_set.
2428: Call find_auto_inc; move code to there.
2429: (mark_used_regs, case SET): Don't call recursively on MEM if it is
2430: SET_DEST, instead call find_auto_inc ourselves.
2431:
2432: Tue May 28 17:29:52 1991 Micheal Tiemann (tiemann at wookumz.gnu.ai.mit.edu)
2433:
2434: * gnulib1.c (__fixsfsi, __cmpsf2, __extendsfdf2): Add declarations
2435: for intify.
2436:
2437: * gcc.c (default_compilers): Accept `.cxx' as a C++ extension.
2438:
2439: Tue May 28 17:05:28 1991 Tom Wood (wood at dg-rtp.dg.com)
2440:
2441: * m88k.md (movstrsi): Pass original MEM expressions.
2442: * out-m88k.c (expand_block_move, block_move_{sequence,no_loop,loop}):
2443: Use original MEM expressions to set RTX_UNCHANGING_P, MEM_VOLATILE_P,
2444: and MEM_IN_STRUCT_P.
2445:
2446: * out-m88k.c (emit_bcnd): Use bxx when optimizing so jump_optimize
2447: will work on more cases. Change this back when jump_optimize uses
2448: get_condition to find the values being compared.
2449:
2450: * m88k.md: Don't use operand0 or operand1.
2451:
2452: Tue May 28 16:00:56 1991 Micheal Tiemann (tiemann at wookumz.gnu.ai.mit.edu)
2453:
2454: * emit-rtl.c (try_split): Make sure `after' exists before checking
2455: to see if it is a BARRIER.
2456:
2457: Tue May 28 15:08:44 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2458:
2459: * gcc.c (process_command): Warn if -x follows last input file.
2460:
2461: * cccp.c: Don't include file twice if a #ifndef would make it a no-op.
2462: (struct file_name_list): New field, control_macro.
2463: Initialize it where these structures are created.
2464: (struct if_stack): Likewise.
2465: (do_include): If file already known, check its control macro if any.
2466: Don't include the file if the macro is now defined.
2467: (do_xifdef): Detect case of successful #ifndef at start of file.
2468: (condition_skip): Accept macro name as new arg. Record in if_stack.
2469: (do_endif): Detect being effectively at end of file.
2470: (record_control_macro): New function. Called from do_endif.
2471:
2472: * calls.c (store_one_arg): Set used after calling push_rounding.
2473:
2474: * sparc.md (floating move peepholes): Allow `r' for operand 2.
2475:
2476: * arm.md, tm-arm.h, out-arm.c, xm-arm.h: New files.
2477: * configure (arm): New alternative.
2478:
2479: Tue May 28 11:53:21 1991 Michael Meissner (meissner at osf.org)
2480:
2481: * tm-decstatn.h (CPP_PREDEFINES): Add Ultrix 4.2 support.
2482:
2483: * tm-mips.h (cmp_type, branch_cmp, branch_type): Global variables
2484: and type to record what type of comparison is being done.
2485: (mips_print_operand_punct): New array to specify whether a
2486: character is valid for print_operand as punctuation.
2487: (set_nomacro, set_noat, set_noreorder): New variables to record
2488: whether a .set nomacro, .set noat, or .set noreorder has been
2489: done.
2490: (dslots_{filled,total}_{load,jump}): New global variables to
2491: remember how many delay slots exist and are filled for the -mstats
2492: option.
2493: (CC1_SPEC): Combine %{O:...} %{O*:...} cases. For -G32, pass -G
2494: 32. Add dummy pattern for -save-temps to avoid error message.
2495: (DBX_DEBUGGING_INFO): Define this all the time.
2496: (SDB_ALLOW_FORWARD_REFERENCES): Define this for MIPS ECOFF support.
2497: (SDB_ALLOW_UNKNOWN_REFERENCES): Define this for MIPS ECOFF support.
2498: (TARGET_SWITCHES): Add -mstats to print interesting statistics.
2499: Add -mmemcpy to force memcpy to be called. Add -mdebug[fghij].
2500: Add -mno- version of switches.
2501: (DATA_ALIGNMENT): Align all char/short arrays/unions/structures,
2502: rather than just char arrays.
2503: (BYTE_LOADS_ZERO_EXTEND): Define this.
2504: (CONST_OK_FOR_LETTER_P): 'N' returns true if power of 2.
2505: (EXTRA_CONSTRAINT): Redefine 'Q' to be 1 word memory references,
2506: 'R' to be multiword memory references.
2507: (struct frame_info): Add initialized field.
2508: (current_frame_info): New global structure to hold frame info.
2509: (INITIAL_FRAME_POINTER_OFFSET): Use current_frame_info.
2510: (INIT_CUMULATIVE_ARGS): Pass LIBNAME to init_cumulative_args.
2511: (DELAY_SLOTS_FOR_EPILOGUE): Define this to fill j $r31 delay slot.
2512: (ELIGIBLE_FOR_EPILOGUE_DELAY): Ditto.
2513: (ENCODE_SEGMENT_INFO): Don't flag references to 0-sized arrays as
2514: being in the small data segment.
2515: (CONST_COSTS): Reword to be more accurate.
2516: (RTX_COSTS): Define this.
2517: (ADDRESS_COST): Define this.
2518: (CLASS_CMP_OP, CLASS_EQUALITY_OP, CLASS_UNS_CMP_OP): New bits for
2519: rtx_classify to classify various comparison operators.
2520: (FINAL_PRESCAN_INSN): Define this to collect info for -mstats.
2521: (NOTICE_UPDATE_CC): Only do CC_STATUS_INIT if the insn is a
2522: comparison.
2523: (EXTRA_CC_MODES): Define new modes CC_EQmode, CC_FPmode, CC_0mode.
2524: (EXTRA_CC_NAMES): Define this.
2525: (SELECT_CC_MODE): Define this.
2526: (PRINT_OPERAND_PUNCT_VALID_P): Redefine this to index into
2527: mips_print_operand_punct.
2528: (DBR_OUTPUT_SEQEND): Reset .set reorder, .set macro as appropriate.
2529:
2530: * out-mips.c (branch_cmp, branch_type): New Global variables
2531: and type to record what type of comparison is being done.
2532: (mips_print_operand_punct): New array to specify whether a
2533: character is valid for print_operand as punctuation.
2534: (set_nomacro, set_noat, set_noreorder): New variables to record
2535: whether a .set nomacro, .set noat, or .set noreorder has been
2536: done.
2537: (dslots_{filled,total}_{load,jump}): New global variables to
2538: remember how many delay slots exist and are filled for the -mstats
2539: option.
2540: (reg_or_0_operand): Rewrite to add support for CONST_DOUBLE.
2541: (mips_const_double_ok): Allow normal FP constants (not Infinity,
2542: Nan, etc) to be used as operands when using the MIPS assembler.
2543: (simple_memory_operand): Combine GP memory references from
2544: gp_memory_operand. Delete gp_memory_operand.
2545: (equality_op): Return true if EQ or NE.
2546: (cmp_op): Return true if comparison operator.
2547: (uns_cmp_op): Return true if unsigned comparison.
2548: (mips_move_1word): New name for mips_move_instructions. Also, loads
2549: of HImode/QImode use unsigned loads, rather than signed loads, so
2550: that BYTE_LOADS_ZERO_EXTEND can be defined. Use %z to get name of
2551: $0, instead of hardwiring it. Explicitly use lui where appropriate.
2552: (mips_move_2words): New name for mips_move_2words_instructions. Use
2553: %z to get name of $0, instead of hardwiring it.
2554: (mips_address_cost): New function to define ADDRESS_COST macro.
2555: (gen_conditional_branch): New function to generate all of the tests
2556: and branches.
2557: (block_move_sequence): New function to generate straight line code
2558: for block moves.
2559: (block_move_call): New function to set up a call to memcpy/bcopy as
2560: appropriate for block moves.
2561: (expand_block_move): New function which is called from the movstrsi
2562: define_expand, to set up block moves. At present, unless -mmemcpy
2563: is used, moves of less than 32 bytes, get straight line code, all
2564: others get a call.
2565: (init_cumulative_args): Take libname as third argument.
2566: (function_arg_partial_nregs): Fix bug, to not return a negative
2567: number when passing small structs in registers.
2568: (compare_collect, compare_restore): Remove these functions, since
2569: they are no longer called.
2570: (override_options): Initialize mips_rtx_classify for all of the
2571: comparison operator bits. Initialize mips_print_operand_punct to
2572: return TRUE for each of the valid punctuation characters used in
2573: print_operand.
2574: (print_operand): %X now prints 32 bit ints in hex format. %z now
2575: prints $0 if the operand is the constant integer 0. %(, %) now turn
2576: on/off both .set noreorder/.set nomacro. %<, %> turns on/off .set
2577: nomacro. %* turns on both .set noreorder and .set nomacro if
2578: filling delay slots. %! turns on .set nomacro if filling delay
2579: slots.
2580: (compute_frame_size, save_restore, function_prologue,
2581: function_epilogue): Change the calling sequence of
2582: compute_frame_size to save everything in a global structure, which
2583: has an initialized field to indicate that compute_frame_size needs
2584: to be called.
2585: (function_prologue): INIT_CUMULATIVE_ARGS now takes 3 args.
2586: (function_epilogue): If current_function_epilogue_delay_list is
2587: non-null, use that to fill the final delay slot. Also, make sure
2588: the various asm .set's are reset properly. Write interesting
2589: statistics out to stderr if -mstats.
2590: (mips_epilogue_delay_slots): New function to return # of delay slots
2591: the epilogue needs.
2592: (null_epilogue): Return true if the function has a null epilogue,
2593: which allows the optimizer to omit jumps to the final j $31 if no
2594: stack was created.
2595:
2596: * mips.md (type attribute): Redo how the type attributes work, and
2597: change some names.
2598: (mode attribute): New attribute to describe the insn's result mode.
2599: (length attribute): New attribute to give insn length in words.
2600: (dslot attribute): New attribute to return whether an insn needs a
2601: delay slot.
2602: (define_delay): Use dslot and length attributes to determine if a
2603: delay slot is needed.
2604: (define_function_unit): Define all of the function units now.
2605: (all patterns): Provide new attribute definitions.
2606: (all memory reference patterns): modify alternatives to use 'Q' for
2607: 1 word instructions, 'R' for multiword instructions.
2608: (unnamed patterns): Provide names for all patterns, so that -dp will
2609: pinpoint exactly which pattern is used.
2610: (*divsi3, *divmodsi4, *modsi3): If optimizing and not -mdebugc, use
2611: the *divmodsi4 patterns, so that the opimizer will only use 1 divide
2612: if doing a = b / c; d = b % c; This replaces the peepholes, which
2613: previously were used for this. If not optimizing, use the normal
2614: div/mod patterns.
2615: (zero_extendqihi2, extendqihi2): Allow zero/sign extending from
2616: memory.
2617: (fixuns_trunc{df,sf}si2): Use generator patterns to generate
2618: appropriate branches.
2619: (movsi_ulw, movsi_usw): New patterns to generate the appropriate
2620: unaligned load/store for use in the block move expansion.
2621: (mov*): Provide all possible combinations of moves.
2622: (movstrsi): New pattern to generate block moves.
2623: (negsi2): Change to a define_expand, which uses minus.
2624: (one_cmpsli2): Change to a define_expand, which use the nor pattern.
2625: (cmp*, b*): Redo comparison/branch completely to save things in
2626: global variables, call the common C code to expand the branch, and
2627: provide match_operators to do the actual branch.
2628: (s*): Provide for the ability to set a register with an integer
2629: comparison, without using a branch.
2630:
2631: * make-decrose (AUX_OUTPUT2): Delete macro, since aux-output.c is
2632: always compiled separately now.
2633: (LANGUAGES): Suppress G++, Objc temporarily.
2634: (cse.o): Rebuild cse if the config files change, to get new cost
2635: functions, no longer rebuild calls/function since the FUNCTION_ARG
2636: macros just call functions in out-mips.c.
2637: (SRCS): Change $(AUX_OUTPUT2_SRC) to aux-output.c.
2638:
2639: * make-mips (AUX_OUTPUT2): Delete macro, since aux-output.c is
2640: always compiler separately now.
2641: (CONFIG2_H): Add rules to rebuild selected modules when the
2642: tm-mips.h file changes.
2643: (mips-tfile): Rules to build mips-tfile.
2644: (mips-tdump): Rules to build mips-tdump.
2645: (LANGUAGES): Suppress G++, Objc temporarily, build mips-tfile.
2646:
2647: * mips-tfile.c (whole file): New file to put the MIPS specific debug
2648: information into the object file, after the assembler has been run.
2649: This is needed because the MIPS assembler provides no method of
2650: setting up the debug information for local variables. This is
2651: enabled by the make-mips Makefile modifier.
2652:
2653: * mips-tdump.c (whole file): New file to dump the contents of the
2654: MIPS ECOFF symbol table in a symbolic format. This is not currently
2655: built by default, but make-mips contains rules to build it.
2656:
2657: * tm-decrose.h (MD_EXEC_PREFIX): Change to use the test prefix
2658: /usr/ccs/gcc-2.00/gcc- instead of the release prefix /usr/ccs/gcc.
2659: (WCHAR_TYPE_SIZE): Define as 16.
2660: (WCHAR_UNSIGNED): Define as 1.
2661: (DBX_DEBUGGING_INFO): Define moved to tm-mips.h.
2662:
2663:
2664: Tue May 28 06:26:44 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2665:
2666: * expmed.c (store_bit_field, extract_bit_field): If -fforce-mem
2667: specified, copy OP0 into register (and back again, for store).
2668:
2669: * sched.c (memrefs_conflict_p, {true,anti,output}_dependence): Add
2670: missing parens.
2671:
2672: * reload.c (find_reloads): Turn usage of reg_preferred_class back on
2673: now that the code has been refined.
2674:
2675: Mon May 27 12:41:14 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2676:
2677: * c-typeck.c (build_binary_op_nodefault): Set converted for shifts,
2678: so op1 is not converted to the result type.
2679: Clean up some warning messages.
2680:
2681: * expr.c (expand_expr): Use temp stack slot for BLKmode SAVE_EXPR.
2682:
2683: * Makefile.in (alloca.o): Use new vars ALLOCA_FLAGS and ALLOCA_FINISH.
2684:
2685: Mon May 27 05:42:20 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2686:
2687: * sched.c ({read,true,anti,output}_dependence): Remove unused arg INSN.
2688: All callers changed.
2689:
2690: * combine.c (subst, case PLUS): Fix typo in (plus (plus X C) Y) case.
2691: (subst, case MULT): Distribute MULT over PLUS to try to simplify it.
2692:
2693: Mon May 27 05:15:16 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
2694:
2695: * tm-sparc.h (GO_IF_LEGITIMATE_ADDRESS): Don't accept a SYMBOL_REF
2696: sum if FLAG_PIC is not 1. This forces the -fPIC to take effect,
2697: even when the optimizer knows how to stitch together HIGH and LO_SUM
2698: combinations.
2699: (PRINT_OPERAND): Move body to out-sparc.c.
2700: * out-sparc.c (print_operand): New function, implementing actions of
2701: old PRINT_OPERAND macro. Comments written for all cases.
2702: (reg_unused_after): Don't do anything special with JUMP_INSNs. Only
2703: do something special with CALL_INSN if REGNO is a call-used reg.
2704:
2705: * cplus-type2.c (store_init_value): Back out 23 Feb change, which
2706: was completely backward.
2707:
2708: * dbxout.c, cplus-dbxout.c (dbxout_parms): Also test that TREE_TYPE
2709: (PARMS) is not ERROR_MARK_NODE.
2710:
2711: * cplus-init.c (build_up_reference): Check FLAGS parameter to see if
2712: we can accept building a reference to a constructor-generated
2713: temporary.
2714: (various places): Change calls to `build_up_reference' that used to
2715: use an explicit `1' to use LOOKUP_PROTECT instead.
2716: (build_offset_ref): Use IDENTIFIER_TYPE_VALUE macro to the the type
2717: associated with CNAME.
2718:
2719: * cplus-class.c (build_vbase_path): Fix 11 May change by only
2720: changing TREE_TYPE (EXPR) if NULL_EXPR. We might build different
2721: vbase paths for the same expr in multiple inheritance
2722: initialization.
2723:
2724: * Makefile.in: Change sed script so it matches '^# ' instead of just
2725: '^#'. This allows processing of md files with #if/#endif controls
2726: in their C function bodies.
2727:
2728: * cplus-tree.c (build_cplus_new): Set TREE_SIDE_EFFECTS on RVAL.
2729:
2730: * stmt.c (warn_if_unused_value): Don't warn about EXIT_EXPRs.
2731: (expand_decl_cleanup): Add missing type declarations for parameters.
2732:
2733: * cplus-call.c, cplus-class.c, cplus-dbxout.c, cplus-edsel.c: Include
2734: stdio.h after cplus-tree.h since the latter references printf.
2735: * cplus-search.c, cplus-xref.c: Likewise.
2736: * cplus-class.c (prev_class_type): Not static; defined in cplus-tree.h.
2737: * cplus-decl.c (builtin_function, auto_function): Don't put & in
2738: front of function name.
2739: * cplus-typeck.c (comptypes,comp_target_types): Likewise.
2740: * cplus-search.c (report_ambiguous_mi_virtuals): Likewise, for arrays.
2741:
2742: Sun May 26 22:47:35 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
2743:
2744: * cplus-decl.c (make_temporary_for_reference): New function. Split
2745: out code from `grok_reference_init' so we could call it in two
2746: places: where it was called before, and when initializing a
2747: reference through a constructor for a temporary.
2748: (grokdeclarator): Give error message instead of aborting if user
2749: gave method qualifiers for function decl.
2750: (start_function): Switch to temporary obstack before computing
2751: destructor and constructor labels, and before building the
2752: function's RESULT_DECL.
2753:
2754: * cplus-decl.c (store_parm_decls): Make a cleanup that controls the
2755: action of the garbage collector. This ensures that the call to
2756: __gc_pop doesn't get skipped in the function issues a return stmt.
2757: * cplus-gc.c (expand_gc_prologue_and_epilogue): Work with new
2758: cleanup model.
2759:
2760: * cplus-gc.c (build_i_desc): Figure out whether the i_desc should
2761: constitute a defn of its type or not.
2762:
2763: * cplus-typeck.c (c_expand_return): Look through TARGET_EXPR as well
2764: as NEW_EXPR for returning addresses of local variables.
2765:
2766: * reload.c (find_reloads): Intialized `goal_alternative_swapped'
2767: where `swapped' is initialized to zero.
2768:
2769: Sun May 26 21:29:26 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2770:
2771: * recog.c (const_double_operand): Fix typo.
2772: * reload1.c (choose_reload_regs): Fix typo--swap #endif with }.
2773:
2774: * loop.c (init_loop): Multiply copy_cost by 2.
2775: (general_induction_var): Use rtx_cost directly.
2776: (expr_benefit): Function deleted.
2777:
2778: * m68k.md (andsi3): Generate bclr if appropriate.
2779:
2780: * cccp.c (do_undef): Just a warning, if deleting something unusual.
2781:
2782: Sun May 26 18:51:33 1991 Jim Wilson (wilson at sphagnum.cygnus.com)
2783:
2784: * expr.c (force_operand): When calling recursively, use
2785: a temporary to force evaluation of calls. The C language
2786: allows `f (g (x), g (y))' to be evaluated in different orders
2787: on different hosts, which could lead to different code
2788: generation for different hosts.
2789:
2790: * recog.c (const_double_operand): New function for recognizing
2791: CONST_DOUBLE rtx's.
2792:
2793: * expmed.c (expand_mult_add): Add new parameter TARGET which is a
2794: suggestion of where to store the result; pass it to expand_expr.
2795: * loop.c (emit_iv_add_mult): Pass REG to expand_mult_add call as
2796: target for the result.
2797:
2798: * gmicro.md, old-sparc.md, pyr.md: Delete obsolete UMULT patterns.
2799:
2800: * expmed.c (expand_mult): Convert DImode constants to a CONST_INT
2801: if possible, so that multiplies by these can be optimized by the
2802: existing code.
2803:
2804: Sun May 26 00:59:42 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2805:
2806: * gcc.c (process_command): -save-temps is always valid.
2807:
2808: * varasm.c (output_constructor): Don't crash if val == 0.
2809:
2810: * cse.c (refers_to_mem_p): Handle constant addresses.
2811:
2812: * cccp.c (main): Don't store thru last_include if null.
2813:
2814: Sat May 25 06:33:19 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2815:
2816: * reload.c (find_reloads): Don't assume we have at least two operands
2817: when we check for a simple copy.
2818:
2819: * sched.c (update_reg_known_value): Deleted.
2820: (init_alias_analysis): If have REG_EQUIV note, can always use NOTE's
2821: value irrespective of number of sets.
2822: Take known value from note, not SET_SRC.
2823: (memrefs_conflict_p): Remove gotos.
2824: ASHIFT can't occur in an address.
2825: (true_dependence, anti_dependence, output_dependence): Take into
2826: account the fact that a MEM_IN_STRUCT_P reference cannot conflict
2827: with a non-MEM_IN_STRUCT_P reference at a fixed address.
2828:
2829: Fri May 24 11:34:39 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2830:
2831: * Makefile.in (cplus-tab.c): Put back -d option.
2832:
2833: Fri May 24 06:46:07 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2834:
2835: * rtl.c (rtx_alloc): Ensure we keep the obstack aligned.
2836:
2837: Fri May 24 00:17:13 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2838:
2839: * reload1.c (choose_reload_regs): Try with inheritance, then without.
2840: #if 0 the code to avoid inheritance in certain cases.
2841:
2842: Fri May 24 00:13:40 1991 James Van Artsdalen (james at bigtex.cactus.org)
2843:
2844: * out-i386.c (split_di): Check for CONST_DOUBLE before CONSTANT_P.
2845:
2846: * tm-i386.h (LIMIT_RELOAD_CLASS): new macro.
2847: (PREFERRED_RELOAD_CLASS): a CONST_DOUBLE can appear in narrower
2848: classes than GENERAL_REGS.
2849:
2850: * reload.c (push_reload): Limit reload class even if the SUBREG has
2851: already been stripped.
2852:
2853: Thu May 23 11:08:21 1991 Jim Wilson (wilson at sphagnum.cygnus.com)
2854:
2855: * sched.c (schedule_insns): Don't schedule a block if the only insn is
2856: a CODE_LABEL.
2857:
2858: Thu May 23 07:54:57 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2859:
2860: * reload1.c (choose_reload_regs): Process reload in first pass if
2861: a subsequent reload requires fewer registers.
2862: Change criteria for processing from being a strict superset to
2863: having an intersecting, non-equal class.
2864: Ignore optional and turned-off reloads in loop to see what is forced
2865: to be allocated in first pass.
2866:
2867: * toplev.c (compile_file): Fix typo in length of string to allocate
2868: for sched2 dump's name.
2869:
2870: * jump.c (find_cross_jump): Don't crash if single_set returns 0.
2871:
2872: * recog.c (general_operand): A SUBREG of a constant is never valid.
2873:
2874: * local-alloc.c (qty_compare, qty_compare_1): Make priority function
2875: the same as in global-alloc: quantities with shorter lives are
2876: allocated first. This can speed up some code by a factor of three.
2877:
2878: Wed May 22 17:40:49 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2879:
2880: * reload1.c (emit_reload_insns): Fix some minor bugs in making
2881: REG_DEAD notes and recording insn that does store; code sometimes
2882: assumed that each call to gen_move_insn produced at most one insn.
2883:
2884: Wed May 22 16:51:53 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2885:
2886: * reload.c (push_reload): Support LIMIT_RELOAD_CLASS.
2887:
2888: Wed May 22 14:14:51 1991 Micheal Tiemann (tiemann at wookumz.gnu.ai.mit.edu)
2889:
2890: * jump.c (jump_optimize): Update the three simplifications that
2891: start with the "if (...) x = 1;" case. Add comments explaining how
2892: to make them more machine independent, and comments explaining how
2893: they might fail in the future. Ifdef out the second case, and add
2894: code explaining why it does not work.
2895:
2896: * rtl.h: Put definition of FUNCTION_FLAGS_USES_CONST_POOL here.
2897: * integrate.c: Remove definition of it here.
2898:
2899: * integrate.h: New fields in struct inline_remap, min_insnno and
2900: max_insnno, which indicate the range of insns covered by insn_map.
2901: * integrate.c (expand_inline_function): Set min_insnno and max_insnno.
2902:
2903: Wed May 22 12:31:53 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2904:
2905: * tm-vaxv.h (ASM_OUTPUT_LOCAL): Use data_section.
2906:
2907: * protoize.c (fancy_abort): Define it.
2908: * objc-parse.y (yyprint, set_yydebug): New functions.
2909:
2910: * tree.h (gettags, get_permanent_types, get_temporary_types):
2911: Declare them.
2912:
2913: * Makefile.in (protoize.o, unprotoize.o):
2914: Use the standard flags and include dirs. Don't use -Wall.
2915: * protoize.c (abort): Declaration deleted.
2916:
2917: * cccp.c (main): Ensure `next' field in directory list is initialized.
2918:
2919: Wed May 22 09:27:49 1991 James Van Artsdalen (james at bigtex.cactus.org)
2920:
2921: * expmed.c (synth_mult): Return cost of -1 if shift is too
2922: expensive.
2923:
2924: Wed May 22 07:53:52 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
2925:
2926: * out-sparc.c (output_move_double): More SImode->Pmode fixes.
2927:
2928: Wed May 22 02:43:02 1991 Micheal Tiemann (tiemann at wookumz.gnu.ai.mit.edu)
2929:
2930: * Makefile.in, emit-rtl.c, explow.c, final.c, global-alloc.c,
2931: gnulib2.c, hard-reg-set.h, regclass.c, reload1.c, cccp.c: Fix typos
2932: and indentation.
2933:
2934: Wed May 22 00:14:37 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2935:
2936: * combine.c (try_combine): Add to last change; handle subreg
2937: in src as well as in dest of i3.
2938:
2939: Tue May 21 22:32:08 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2940:
2941: * m68k.md (dbra): Rewrite pattern so it reflects simplifications that
2942: combine will make.
2943:
2944: Tue May 21 10:44:05 1991 Jim Wilson (wilson at sphagnum.cygnus.com)
2945:
2946: * loop.c (strength_reduce): When a loop-vtop note is encountered,
2947: reset `not_every_iteration'.
2948:
2949: Tue May 21 00:17:31 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2950:
2951: * c-decl.c (init_decl_processing): Always use long type for size_t.
2952:
2953: * varasm.c (assemble_variable): Use ASM_DECLARE_OBJECT_NAME.
2954:
2955: * protoize.c: Include config.h.
2956: (chmod, kill): Declarations deleted.
2957: They aren't needed, and can conflict with system headers.
2958: (wait): BSD declaration deleted.
2959: (save_def_or_dec): Add missing fprintf arg.
2960:
2961: * tm-next.h (EXTRA_FORMAT_FUNCTIONS): Fix typo.
2962:
2963: * protoize.c: Use USG and VMS as most files do.
2964: Don't expect BSD to be necessary defined outside this file.
2965: Define getwd using getcwd, not vice-versa, to be like dbxout.c.
2966: * cccp.c, SYSCALLS.c: Use USG and VMS as most files do.
2967: Don't expect BSD to be necessary defined outside this file.
2968:
2969: Mon May 20 16:54:17 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
2970:
2971: * tm-i386.h, tm-att386.h, tm-bsd386.h, tm-sun386.h (ASM_BYTE_OP):
2972: Renamed from ASM_BYTE.
2973: * varasm.c (ASM_BYTE_OP): Likewise.
2974:
2975: * c-decl.c, cplus-class.c (finish_struct): Typo:
2976: Had PCC_BIT_FIELD_MATTERS which is now PCC_BITFIELD_TYPE_MATTERS.
2977:
2978: * gcc.c (handle_braces): Don't deref input_suffix if null.
2979:
2980: Mon May 20 15:19:27 1991 Michael I Bushnell (mib at geech.gnu.ai.mit.edu)
2981:
2982: * cccp.c (pcfinclude): STRINGDEF struct is now longword aligned.
2983:
2984: Mon May 20 14:26:18 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
2985:
2986: * sparc.md: Remove all arithmetic, logical, and shift patterns for
2987: sub-SImode operands. Also fix some DImode patterns.
2988:
2989: * out-sparc.c (emit_move_sequence): Simplified considerably.
2990:
2991: * rtl.c (rtx_alloc): Inline-code an optimized obstack_alloc.
2992:
2993: * cplus-lex.c (make_{pointer,reference}_declaration): Call
2994: `build_parse_node' instead of `build1' so memory can be freed.
2995:
2996: * cplus-parse.y: Remove unneeded epsilon rules to produce an average
2997: 15% reduction in the number of reductions performed.
2998:
2999: * cplus-parse.y (RETURN_INIT): Use new interface to speed up
3000: grammar.
3001: * cplus-decl.c (store_return_init): Use new interface.
3002:
3003: Mon May 20 11:16:34 1991 Jim Wilson (wilson at sphagnum.cygnus.com)
3004:
3005: * sched.c (schedule_block): A register which dies in a CALL_INSN
3006: does not cross calls. A single insn block must be scheduled, to
3007: ensure that register lifetime info is corrected updated.
3008:
3009: Mon May 20 06:50:37 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3010:
3011: * combine.c (try_combine): Don't combine when I1 and I2 both feed
3012: into I3 and I1 uses the register set in I2.
3013:
3014: * reload.c (find_reloads): Prefer pseudos over other things we may
3015: reload.
3016:
3017: Mon May 20 02:02:15 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3018:
3019: * combine.c (try_combine): Test MODES_TIEABLE_P when i3 src is subreg.
3020:
3021: * m68k.md (trunc*): Don't set cc if use wider insn.
3022:
3023: Sun May 19 14:45:46 1991 Ron Guilmette (rfg at ncd.com)
3024:
3025: * Makefile.in (clean): Delete stage1...stage4.
3026: (realclean): Delete cexp.output.
3027:
3028: * fixincludes: Handle BSD43__IO* and BSD43_CTRL like IO* and CTRL.
3029:
3030: Sun May 19 15:00:05 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3031:
3032: * reload1.c (count_possible_groups): New function.
3033: (reload): Call it twice. This checks for possible groups
3034: after maybe spilling some single regs.
3035:
3036: * configure (magnum, m3230): Aliases for mips/mips.
3037:
3038: * fixincludes (machine/cpu.h):
3039: Create in proper dir. Fix mips/cpu.h too.
3040:
3041: * reload.c (find_reloads): Turn off usage of reg_preferred_class.
3042:
3043: Sun May 19 09:51:24 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3044:
3045: * flow.c (mark_used_regs): Continue putting REG_DEAD notes on
3046: fixed registers.
3047:
3048: * regclass.c (reg_class_record): Don't count classes in which objects
3049: won't fit.
3050:
3051: * reload.c (find_reloads): Pre-compute preferred classes for each
3052: operand; if operand 1 is copied to operand 0, merge the classes.
3053: REJECT is now only 1/3 as costly as LOSERS; ? adds 3 to REJECT so
3054: that it's semantics don't change.
3055:
3056: * expr.c (compare_from_rtx): Do EQ and NE comparisons unsigned since
3057: they are usually cheaper and will cse with comparisons against zero
3058: which are already unsigned.
3059:
3060: * reload1.c (choose_reload_regs): Don't try to access reload_out
3061: for disabled reload (reload_strict_low may not have been cleared).
3062:
3063: * reload1.c (choose_reload_regs): Don't let optional reloads inherit
3064: spill regs until all non-optional reloads have been allocated spill
3065: regs.
3066: We can use find_equiv_reg even if must_reuse, we just can't get a
3067: spill reg that way.
3068:
3069: * expr.c (do_tablejump): When using LABEL_REF in arithmetic, make it
3070: in Pmode instead of VOIDmode.
3071:
3072: * function.c (fixup_var_refs_1): Don't try to make paradoxical
3073: memory SUBREGs; instead keep SUBREG_REG a pseudo and copy between
3074: memory and the pseudo.
3075: (fixup_memory_subreg): Abort if we try making paradoxical SUBREGs.
3076:
3077: * reorg.c (redundant_insn_p): Insns we pass may reference resources
3078: set by INSN; it is sufficient that they not set resources in INSN.
3079:
3080: Sun May 19 08:06:17 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
3081:
3082: * tm-sparc.h (STRUCT_VALUE): Change SImode to Pmode here, and in
3083: other places.
3084: (FIRST_PARM_OFFSET): Change 4 to UNITS_PER_WORD here, and in other
3085: places.
3086: (ROUND_ADVANCE): New macro to compute how far to advance the arg
3087: pointer for a give parameter.
3088: (FUNCTION_ARG): Use PARM_BOUNDARY instead of 32.
3089: (EXTRA_CONSTRAINT): Don't depend on `reload_completed'.
3090: * sparc.md (various places): Change many DImode predicates from
3091: `general_operand' to `register_operand'.
3092:
3093: * jump.c (find_cross_jump): Fixed 18 May change to use
3094: `validate_change' to make sure we get valid, initialized values
3095: regardless of which path we choose.
3096:
3097: Sat May 18 15:07:29 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3098:
3099: * cccp.c: Rename FATAL_EXIT_CODE to FAILURE_EXIT_CODE.
3100:
3101: * gnulib1.c: Rename SFVALUE to FLOAT_VALUE_TYPE.
3102: (union flt_or_value): New type.
3103: (*): Use that instead of flt_or_int in most places.
3104: Delete some variables `intify' that aren't needed.
3105: * tm-i386.h: Rename SFVALUE to FLOAT_VALUE_TYPE.
3106:
3107: * stor-layout.c (layout_record): BITFIELD_NBYTES_LIMITED now 1 or 0.
3108:
3109: * rtl.h (struct rtx_def): Drop SHORT_ENUM_BUG; keep ONLY_INT_FIELDS.
3110:
3111: * loop.c (add_cost, copy_cost):
3112: Variables replace old macros *_BENEFIT and COPY_PENALTY.
3113: (init_loop): New function to set the variables.
3114: (expr_benefit): Use rtx_cost.
3115: * toplev.c (compile_file): Call init_loop.
3116: * cse.c (rtx_cost): Treat mult by 2**n as a shift by default.
3117:
3118: * toplev.c (output_file_directive):
3119: Typo in ASM_OUTPUT_MAIN_SOURCE_FILENAME.
3120:
3121: * gnulib2.c [L_trampoline]: Rename function to __trampoline.
3122: Always compile it even if empty. Make it global.
3123:
3124: Sat May 18 14:11:37 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3125:
3126: * reload.c (find_reloads): Remove unnecessary test when increasing
3127: cost of alternative due to non-preferred register class.
3128:
3129: * reload1.c (choose_reload_regs): Fix typo.
3130:
3131: * tm-rs6000.h: Add hard registers for the 8 CR fields; add classes
3132: CR0_REGS and CR_REGS.
3133: Don't use CC0; add CCUNSmode and CCFPmode.
3134: (FIXED_REGISTERS): r31 (fp) is no longer fixed.
3135: (REG_CLASS_FROM_LETTER): Remove 'd' for GENERAL_REGS; 'r' already
3136: means this.
3137: (CONST_DOUBLE_OK_FOR_LETTER): If we can move a constant in two insns
3138: for DF or one insn for SF, let it match 'G'.
3139: (SECONDARY_RELOAD_CLASS): Define this new macro.
3140: (FUNCTION_ARG): Fix typo in testing nargs_prototype.
3141: (LEGITIMATE_CONSTANT_P): Always return 1.
3142: (FIXUNS_TRUNC_LIKE_FIX_TRUNC): Do not define.
3143: * rs6000.md: Don't use CC0; instead use a pseudo which will be assigned
3144: to CR_REGS or CR0_REGS. Make variants of arithmetic insns that
3145: set only the condition code and that set both the condition code
3146: and a normal result.
3147: Delete "cc" attribute and add "type" attribute.
3148: Define delays for cc-setting insns and for loads.
3149: Replace `d' constraint with `r'.
3150: Delete patterns for HImode and QImode arithmetic operations.
3151: Handle putting "easy" DFmode or SFmode constant into a register.
3152: Rework compare and branches; add scc insns.
3153: Fix up decrement-and-branch insns, but they still won't be used yet.
3154: (call insns): Use pseudo for "lr" in indirect calls.
3155: (movdf, movsf): Explictly handle need to use memory to copy between
3156: general and FP registers.
3157: * out-rs6000.c (next_insn_tests_no_unsigned, unsigned_comparisons_p):
3158: Deleted.
3159: (update_cc): Likewise.
3160: (gen_reg_operand): Tighen up a bit.
3161: (cc_reg_operand, reg_or_u_short_operand, easy_fp_constant): New fns.
3162: (fp_reg_or_mem_operand, mem_or_easy_const_operand): Likewise.
3163: (call_operand): Accept pseudo register.
3164: (branch_comparison_operator, scc_comparison_operator): New functions.
3165: (secondary_reload_class, ccr_bit, must_save_cr): Likewise.
3166: (print_operand, case 'w', 'u'): Support CONST_DOUBLE.
3167: (print_operand, cases 'W', 'f', 'F', 'R', 't', 'T', 'C', 'D'):
3168: New cases.
3169: (print_operand, cases 'j' and 'J'): Now use for bit number in CCR.
3170: (output_{pro,epi}logue): If we call function to save/restore fpr's,
3171: we need to save/restore LR.
3172: Save CR if we modify the call-saved fields.
3173:
3174: * romp.md: Delete HImode and QImode arithmetic operations.
3175: (swapxi): Delete; obsolete and never used.
3176:
3177: * tm-a29k.h (TARGET_SWITCHES): Change -mnodw to -mndw.
3178: Add -m{no-,}reuse-arg-regs.
3179: (SECONDARY_RELOAD_CLASS): Provide a definition for this new macro.
3180: * a29k.md: Delete all HImode and QImode arithmetic operations.
3181: * out-a29k.c (secondary_reload_class): New function.
3182: (incoming_reg): Look at TARGET_NO_REUSE_ARGS.
3183:
3184: * reload1.c (eliminate_regs): Don't remove a PLUS unless inside an
3185: address since it would need to change INSN_CODE and can't do it here.
3186:
3187: * reorg.c (uid_to_ruid, max_uid): New vars.
3188: (mostly_true_jump): Refine prediction slightly.
3189: Use uid_to_ruid map to accurately see if branches are backward.
3190: (relax_delay_slots): Pass condition to mostly_true_jump.
3191: (dbr_schedule): Allocate and build uid_to_ruid map.
3192:
3193: Sat May 18 12:54:45 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3194:
3195: * cse.c (insert): "Unchanging" pseudos count as constant.
3196:
3197: * tree.c (make_node): Rewrite end as a switch.
3198:
3199: Sat May 18 03:51:06 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
3200:
3201: * cse.c (FIXED_BASE_PLUS_P): Since this is used when called from
3202: `expand_inline_function', also catch the case where the base
3203: register is VIRTUAL_STACK_VARS_RTX.
3204: (simplify_binary_operation): In EQ and NE case, convert a COMPARE
3205: operand to something we can optimize.
3206: (refers_to_mem_p): Handle the case when `base' is a LO_SUM.
3207: * integrate.c (FIXED_BASE_PLUS_P): Define this to recognize offsets
3208: from the various virtual registers.
3209: (expand_inline_function): Expand exprs using EXPAND_SUM so as to get
3210: stack frame addresses instead of pseudos. This yields much better
3211: cse (at little cost) for GNU C++. Also, test FIXED_BASE_PLUS_P as
3212: an alternative to CONSTANT_P to record a known register value.
3213: * jump.c (find_cross_jump): If we are processing a cross jump and
3214: the insns fail to match, try looking for a REG_EQUAL note that makes
3215: them equivalent insns. If found, keep going. This is important for
3216: merging cleanup codes when one cleanup path gets frame address in a
3217: register when the other path gets the frame address explicitly.
3218:
3219: * cplus-init.c (build_delete): Fixed residual use of 1-based
3220: indexing to use 0-based indexing instead.
3221:
3222: * cplus-decl2.c (grokclassfn): Fix raeburn's May 12 change so that
3223: destructors still have the same name.
3224:
3225: * cplus-decl.c (decls_match): Remove dependence on MERGED.
3226:
3227: * cplus-class.c (build_vbase_path): Fixed bug in computing offsets
3228: for exprs which are FIXED_TYPE_P.
3229: (build_vfn_ref): Change initializer for REF from 0 to NULL_TREE.
3230:
3231: * cplus-decl.c (maybe_build_cleanup): Add LOOKUP_NONVIRTUAL to flags
3232: argument in call to `build_delete' if DECL does not use virtual
3233: baseclasses. If it does, we go through a function call to save
3234: space, unless FLAG_EXPENSIVEO_OPTIMIZATIONS is nonzero. ??Better
3235: approach is to know, in expand_cleanups, to clear `flag_no_inline'
3236: during the cleanup's expansion.
3237:
3238: * cplus-*.c (various places): Add LOOKUP_DESTRUCTOR to all places
3239: where we know we are calling a destructor for a non-null object.
3240:
3241: * stmt.c (fixup_gotos): Run destructors on cleanups that come
3242: from the block being exited, in addition to any inner blocks
3243: for which LABEL is now defined.
3244: (expand_return): Take care of destructors that occur in the
3245: current binding level.
3246: (fixup_cleanups): If we emitted no insns, don't change *BEFORE_JUMP.
3247:
3248: * rtlanal.c: Define `target_flags' here...
3249: * toplev.c: ...not here. This enables us to link gen* programs
3250: which might, through rtlanal.o, pull in references to `target_flags'
3251: that are never used.
3252:
3253: * function.c: Add declaration for `current_function_uses_const_pool'.
3254: * expr.h: Add extern declaration for that variable.
3255: * function.h (struct function): Add a slot named
3256: `uses_const_pool' for `current_function_uses_const_pool'.
3257: * function.c ({push,pop}_function_context): save and restore the
3258: value of `current_function_uses_const_pool'.
3259: * rtl.h (FUNCTION_FLAGS_USES_CONST_POOL): Defined to be 0200.
3260: * integrate.c (initialize_for_inline):
3261: FUNCTION_FLAGS_USES_CONST_POOL now contributes to the value of
3262: `function_flags'.
3263: (output_inline_function): Restore `current_function_uses_const_pool'
3264: from `function_flags'.
3265: (save_for_inline_copying): Only call `save_constants' if
3266: `current_function_uses_const_pool' is nonzero.
3267: (save_for_inline_nocopy): Ditto.
3268: (save_constants): Tweaked to perform its treewalk faster. Notably,
3269: it no longer accepts ptrs to NULL rtl. All callers changed.
3270: * varasm.c (force_const_mem): Set `current_function_uses_const_pool'
3271: if we create a constant pool reference.
3272:
3273: * cplus-parse.y, c-parse.y: Add new function `set_yydebug'. If
3274: YYDEBUG is defined, sets `yydebug' to VALUE. Otherwise, prints
3275: warning that operation is invalid.
3276: * toplev.c (main): Call `set_yydebug' instead of setting `yydebug'
3277: directly. This allows user to turn YYDEBUG off for faster parsing.
3278:
3279: * cse.c (simplify_binary_operation): Eliminate abort when passed
3280: DImode operands.
3281:
3282: Fri May 17 21:56:41 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3283:
3284: * hard-reg-set.h (reg_class_superunion): New var.
3285: * regclass.c (init_reg_sets): Compute reg_class_superunion.
3286: (reg_classes_intersect_p): New function.
3287:
3288: * reload.c (find_reloads): Alternative is discouraged if it puts
3289: a pseudo in a register class it doesn't prefer.
3290:
3291: * reload1.c (basic_block_needs): Now an array, per register class.
3292: (reload): Compute separate basic_block_needs for each class.
3293: (spill_hard_reg): If pseudo is only in one block, see if that block
3294: needs a spill register of a class containing the hard reg; leave the
3295: pseudo alone if not.
3296:
3297: * reload1.c (reload_mode, reload_nregs): New vars.
3298: (reload_reg_class_lower): Use them.
3299: (allocate_reload_reg): New function.
3300: (choose_reload_regs): Track size and class of any groups. We
3301: can inherit reloads if we are the size of the largest group or
3302: if our class is disjoint from those needed for groups.
3303: Try all inherits first before all spill register allocations
3304: unless there is a later reload with a smaller class; call
3305: allocate_reload_reg to do the actual allocation.
3306: Use new vars above.
3307: (emit_reload_insns): Delete output reload even if we weren't
3308: storing to memory.
3309:
3310: * reload.h (reload_secondary_reload, reload_secondary_p): New vars.
3311: * reload.c (push_reload): If secondary reload register is needed,
3312: make a secondary reload.
3313: * reload1.c (reload): Reload with reload_secondary_p nonzero is in use.
3314: (choose_reload_regs): Likewise.
3315: (emit_reload_insns): Handle secondary reloads, when needed.
3316:
3317: * reload1.c (reload): Add pass to remove death notes for things that
3318: are no longer registers or don't die if we must preserve death notes.
3319: (emit_reload_insns): Refine REG_DEAD notes to be more accurate; make
3320: notes for secondary reloads.
3321:
3322: * reload1.c (emit_reload_insns): Abort for output reloads for jumps;
3323: we have to implement this at some point.
3324:
3325: Fri May 17 20:08:22 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3326:
3327: * protoize.c: Handle ultrix like BSD.
3328:
3329: Fri May 17 15:56:41 1991 Richard Stallman (rms at geech.gnu.ai.mit.edu)
3330:
3331: * Pass library function name to INIT_CUMULATIVE_ARGS.
3332: * calls.c (expand_call): Pass extra arg to INIT_CUMULATIVE_ARGS.
3333: * expr.c (emit_library_call): Likewise.
3334: * function.c (assign_parms): Likewise.
3335: * tm-*.h (INIT_CUMULATIVE_ARGS): Accept the extra arg.
3336: (INIT_CUMULATIVE_INCOMING_ARGS): Likewise, just for symmetry.
3337:
3338: Fri May 17 15:41:22 1991 James Van Artsdalen (james at bigtex.cactus.org)
3339:
3340: * tm-i386v4.h (ASM_OUTPUT_COMMON): Don't attempt alignment on a
3341: three byte boundary.
3342:
3343: Fri May 17 15:25:16 1991 Tom Wood (wood at dg-rtp.dg.com)
3344:
3345: * function.c (assign_stack_local, assign_outer_stack_local): Make
3346: the alignment in bytes.
3347:
3348: Fri May 17 14:31:00 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
3349:
3350: * cplus-class.c (build_vbase_path): Only build a COND_EXPR if
3351: NONNULL is zero.
3352: (resolves_to_fixed_type_p): Check TREE_HAS_CONSTRUCTOR for
3353: CALL_EXPRs and INDIRECT_REFs.
3354:
3355: * cplus-call.c (build_method_call): Add call to `constructor_name'
3356: if BASETYPE changes.
3357: * cplus-init.c (build_new): Add LOOKUP_NONVIRTUAL to FLAGS argument
3358: to `build_method_call'. Constructors are never virtual. Also, set
3359: TREE_HAS_CONSTRUCTOR bit for return value from `build_method_call'.
3360:
3361: Thu May 16 21:36:10 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3362:
3363: * rtl.h (CONSTANT_P): Now true for a CONST_DOUBLE.
3364: * combine.c, cse.c, emit-rtl.c, expr.c, integrate.c, loop.c:
3365: Update for new meaning of CONSTANT_P to include CONST_DOUBLE.
3366: * optabs.c, recog.c, reload.c, reload1.c, rtl.h, rtlanal.c:
3367: Likewise.
3368: * romp.md, rs6000.md, out-alliant.c, out-convex.c: Likewise.
3369: * out-gmicro.c, out-i386.c, out-i860.c, out-m68k.c: Likewise.
3370: * out-sparc.c, out-spur.c, out-tahoe.c: Likewise.
3371:
3372: * combine.c (SUBST, SUBST_INT): If INTO equals NEWVAL, don't
3373: record the substitution.
3374: (try_combine, subst, make_compound_operation, simplify_and_const_int):
3375: No longer need check for changes before using SUBST macro.
3376: (simplify_shift_count): Likewise.
3377:
3378: * integrate.c (copy_rtx_and_substitute, case CONST): If what
3379: was originally a constant becomes something that is not a constant
3380: when passed through a recursive call, return it without the CONST.
3381:
3382: * rtl.c (copy_most_rtx): New function.
3383: * rtl.h (copy_most_rtx): Declare it.
3384: * function.c (fixup_var_refs_1, case MEM): If a MEM contains VAR,
3385: ensure the MEM isn't shared by copying it.
3386:
3387: * expmed.c (expand_divmod): If doing MOD, produce divide result
3388: into unique pseudo so that we might CSE the division.
3389:
3390: Thu May 16 12:01:42 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3391:
3392: * reload.c (push_reload): Try find_dummy_reload before dead regs.
3393:
3394: * function.c (assign_stack_local*): Use GET_MODE_ALIGNMENT.
3395: Use CEIL_ROUND consistently.
3396: Don't force word alignment even if STRICT_ALIGNMENT (experiment).
3397:
3398: Thu May 16 10:31:04 1991 Jim Wilson (wilson at sphagnum.cygnus.com)
3399:
3400: * unroll.c (unroll_loop): Don't abort if start label does not
3401: immediately follow LOOP_BEG note. This can happen as a result of
3402: jump threading.
3403: * reorg.c (mostly_true_jump): Eliminate repeated test in second loop.
3404:
3405: * sched.c (priority): Abort if find a NOTE in a groups of insns that
3406: must be scheduled together.
3407: (free_pending_lists): New function. Moves every *_LIST rtx on the
3408: pending lists to the free list.
3409: (add_insn_mem_dependence): Get a *_LIST from the free list instead
3410: of creating one if possible.
3411: (sched_analyze_1): Don't move an insn across a call if it uses a
3412: register that is not already live across calls.
3413: (sched_analyze_insn): Likewise.
3414: (sched_analyze_1): When flusing the pending lists, put the *_LIST
3415: rtx on the free list.
3416: (sched_analyze): Likewise.
3417: (schedule_block): Likewise.
3418: (sched_analyze_2): For a cc0 setter/user pair, put a copy of all
3419: dependencies on the first insn onto the second insn.
3420: (sched_analyze_insn): Likewise for call sequences.
3421: (sched_analyze_insn): Handle REG_INC notes just like SETs.
3422: (sched_note_set): Handle hard registers same as psuedo regs.
3423: (attach_deaths): Likewise. Don't add REG_DEAD notes to the frame
3424: pointer, arg pointer or stack pointer.
3425: (schedule_block): Likewise.
3426: (rank_for_schedule): Do not check whether each insn of a sequence
3427: that must be scheduled together is ready. They will only reach here
3428: if they are all already ready.
3429: (schedule_block): After reload, don't need to give special treatment
3430: to insns at function start which set up the function parameters.
3431: Don't treat tail specially if it is part of a group that must be
3432: scheduled together.
3433: When a group of instructions is scheduled together, run the lifetime
3434: analysis code on every instruction in the group from last to first.
3435: A call_insn kills all call_used and global regs except those
3436: explicitly used by the call_insn.
3437: (schedule_insn): Initialize new variables. If USE_C_ALLOCA, free
3438: alloced memory immediately after each schedule_block call, not once
3439: at the end.
3440:
3441: * rtl.c (add_dependence): When adding a dependence that points to an
3442: insn that is part of a sequence that must be scheduled together,
3443: make the dependence point to the last insn of the sequence instead.
3444:
3445: Wed May 15 13:08:32 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3446:
3447: * combine.c (simplify_and_const_int): If we have
3448: (and (OP (lshiftrt X Y) Z) C), for OP of IOR, XOR, and NOT, commute
3449: OP and LSHIFTRT to put AND and LSHIFTRT adjacent to try to form
3450: ZERO_EXTRACT.
3451:
3452: * combine.c (subst, gen_lowpart_for_combine, get_last_value_validate):
3453: Use object's mode instead of VOIDmode when we make
3454: (clobber (const_int 0)) in case someone uses the mode for significant
3455: bits.
3456: * rtlanal.c (side_effects_p): Reject non-VOIDmode CLOBBERs.
3457:
3458: * rtlanal.c (reg_set_p_1): Remove test for `reg_set_reg' being MEM.
3459: (reg_set_p): Abort if passed a MEM.
3460:
3461: * toplev.c (strip_off_ending): Strip trailing ".f".
3462:
3463: Wed May 15 12:54:18 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
3464:
3465: * cplus-typeck.c (build_modify_expr_1): If the TREE_TYPE of the
3466: recursive result is an ARRAY_TYPE, change it to void_type_node so
3467: build_compound_expr doesn't lose when calling default_conversion.
3468:
3469: * cplus-tree.h (lang_type): Remove AS_LIST field from lang_type.
3470: Use TYPE_MAX_VALUE field of type instead.
3471: (TREE_REFERENCE_EXPR): New macro.
3472:
3473: * cplus-parse.y (LC): If we are not in temporary allocation, call
3474: permanent_allocation. This frees up any PARM_DECL nodes that were
3475: allocated since we processed an inline function. NOTE: we still
3476: have to clean up these parms from inline functions that did not go
3477: inline.
3478:
3479: * cplus-decl.c (store_parm_decls): Since we no longer push an extra
3480: binding level if ! PARMS_HAVE_CLEANUPS, test CLEANUP_LABEL to figure
3481: out how far up the binding countours we must look.
3482: (init_decl_processing): If FLAG_NO_INLINE is nonzero, set
3483: FLAG_DEFAULT_INLINE to zero.
3484:
3485: * cplus-class.c (finish_struct_bits): Copy TYPE_MIN_VALUE and
3486: TYPE_MAX_VALUE. These actually hold C++-related data that's moved
3487: up from the lang_type data structure.
3488:
3489: * cplus-*.c: Change REFERENCE_EXPR to CONVERT_EXPR. Set
3490: TREE_REFERENCE_EXPR bit to indicate a CONVERT_EXPR that's really the
3491: address of a C++ reference expression.
3492:
3493: Wed May 15 12:30:26 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3494:
3495: * tm-sparc.h (FIXED_REGISTERS): Register 0 is not fixed; it is used
3496: for the condition code, not to represent the fixed %g0.
3497:
3498: Tue May 14 18:59:06 1991 Jim Wilson (wilson at sphagnum.cygnus.com)
3499:
3500: * explow.c (find_next_ref): Start search at first insn after INSN.
3501:
3502: * jump.c (jump_optimize): Update the three simplications that start
3503: with the "if (...) x = 1; else {...} if (x) ..." case, so that when
3504: HAVE_cc0 is not defined, they do not accept TST insns (which could
3505: just be a register to register move). They should only accept insns
3506: with the COMPARE operator.
3507:
3508: Tue May 14 14:51:33 1991 Tom Wood (wood at dg-rtp.dg.com)
3509:
3510: * cse.c (simplify_binary_operation): Don't abort when comparing
3511: two CONST_DOUBLE values.
3512:
3513: Tue May 14 11:35:47 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3514:
3515: * c-common.c (decl_attributes): Fix typo in name of attribute.
3516: It should be `aligned'. Also don't crash on unknown attribute.
3517:
3518: * expmed.c (init_expmed): Make a separate object to free back to.
3519:
3520: * hard-reg-set.h (HOST_BITS_PER_LONG_LONG): Provide default definition.
3521:
3522: * toplev.c (main): Implement -gdwarf.
3523:
3524: Tue May 14 06:32:48 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3525:
3526: * flow.c (mark_used_regs): Don't make REG_DEAD notes for fixed regs.
3527:
3528: * combine.c (subst): Convert (not (ashift C X)) to (or (rotate ..))
3529: and similarly for (not (lshiftrt C X)).
3530: (make_field_assignment): Make corresponding change in how we recognize
3531: bitfield assignment of single bit to zero.
3532:
3533: * combine.c (merge_outer_ops): New function.
3534: (simplify_shift_const): Use merge_outer_ops to generalize and
3535: simplify handling of outer_ops.
3536: Try using distributive law followed by invert distributive law
3537: to simplify combinations of logical operations and shifts.
3538:
3539: * emit-rtl.c (gen_highpart): Correct conditional that says when we
3540: can get the bits of a DFmode object; copy from gen_lowpart.
3541:
3542: * cse.c (simplify_binary_operation, case MULT): Simplify zero case.
3543: (simplify_binary_operation, case DIV): In 0/x, return zero in proper
3544: mode.
3545:
3546: * combine.c (simplify_comparison): Can only extend comparison
3547: to wider mode if equality comparison or test of sign bit.
3548:
3549: Tue May 14 03:26:36 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
3550:
3551: * cplus-tree.h (lang_type): Change to use TREE_VEC to hold basetype
3552: info.
3553: (CLASSTYPE_N_BASECLASSES, CLASSTYPE_BASECLASS): Changed accordingly.
3554: Baseclasses are now counted [0..n) instead of [1..n].
3555: (CLASSTYPE_BASETYPECLASSES): Deleted.
3556: * cplus-*.c (various places): Change code to work with new
3557: representation for basetypes.
3558:
3559: * toplev.c (main): Handle `-gdwarf' as a debug option.
3560:
3561: * cse.c (insert): Treat pseudos marked RTX_UNCHANGING_P as being
3562: const.
3563:
3564: Mon May 13 22:44:18 1991 Jim Wilson (wilson at ok.cygnus.com)
3565:
3566: * mips.md: In the div/mod peepholes, don't apply the peephole if the
3567: first operation overwrites one of its two operands.
3568:
3569: Mon May 13 12:14:51 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3570:
3571: * expmed.c (store_bit_field, extract_bit_field):
3572: Set volatile_p while checking predicates.
3573: * recog.h (volatile_p): Declare it.
3574: * explow.c (force_not_mem): Do nothing with BLKmode.
3575:
3576: * SYSCALLS.c (u_int): Don't define on DGUX--already defined.
3577:
3578: * m68k.md (zero_extend*): Don't make the subreg in the template.
3579: Make it explicitly, and handle subregs as operand 0.
3580:
3581: * tm-convex.h (MODES_TIEABLE_P): Fix typos.
3582:
3583: * loop.c (check_dbra_loop): To check for a loop with a `break', use
3584: loop_number_exit_label, not the uid_luid of each label, since loop
3585: unrolling may have created new labels with no uid_luid.
3586:
3587: * expr.c (push_block): Fixed typo in last change.
3588:
3589: Mon May 13 12:07:25 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3590:
3591: * combine.c (subst): If we can't change comparison code, see if
3592: we can instead surround our operation with an XOR.
3593:
3594: * combine.c (make_compound_operation, simplify_and_const_int):
3595: Ensure shift counts are non-negative and in range before using them
3596: to perform shifts.
3597: (simplify_comparison): Likewise.
3598:
3599: * combine.c (try_combine): See if we have previously merged a
3600: compare and arithmetic operation. If so try to take it apart to
3601: allow further combines (such as making a branch-and-decrement).
3602:
3603: * combine.c (try_combine): Don't make VOIDmode register if our split
3604: point is a constant.
3605:
3606: * combine.c (subst): Use COMBINE_RTX_EQUAL_P to see if SET_DEST
3607: is our register; two hard regs might have different rtx.
3608:
3609: * combine.c (subst): Generalize associative law handling to
3610: cases not involving constants.
3611:
3612: * combine.c (expand_compound_operation): If we would return a
3613: (clobber (const_int 0)), return what we were given.
3614:
3615: * combine.c (simplify_shift_const): Clean up by removing fallthrough.
3616:
3617: Mon May 13 10:26:00 1991 James Van Artsdalen (james at bigtex.cactus.org)
3618:
3619: * i386.md (all calls to output_move_double): call return
3620: value to avoid spurious compiler warnings.
3621: Allow REG in all alternatives of operand 0 where possible.
3622: Remove patterns to recognize increment/decrement.
3623: (addsi3, addhi3, addqi3): Do this in here instead.
3624: (floatdidf2): New pattern.
3625: (adddi3, subdi3, negdi2): New patterns.
3626: (umulsi3, umulhi3): Remove obsolete UMULT patterns.
3627: (divM3, udivM3, divmodM4, udivmodM4): Use "r" constraint instead
3628: of "x" or "abc".
3629: (sqrtsf2, sqrtdf2): New patterns.
3630: (ashldi3, ashrdi3, lshldi3, lshrdi3): New patterns
3631: (All shift and rotate patterns): Don't use reg name explicitly in
3632: output string: use %N operand reference.
3633: (ashlM3, lshlM3): Use `add' instead of `shl'/`sal' if possible.
3634: (insv): Fix output constraint. Clarify source. Disable for now -
3635: makes worse code.
3636: (SImode bit test, all Scond patterns): Allow MEM operands too.
3637: (seq, sne): Handle CC_Z_IN_NOT_C.
3638: (jump, indirect_jump, tablejump): Align code on word boundary
3639: after unconditional jumps.
3640: (`loop' patterns): Delete - will never be useful on i386.
3641: (call_pop, call_value_pop): New patterns.
3642: (return): New pattern: Do `return' if simple epilogue. But only if
3643: the real function epilogue isn't next.
3644: (movstrsi): Do word moves, not just bytes, if count is unknown.
3645: (ffsM2): New patterns.
3646:
3647: * out-i386.c (FP_TOP, AT_SP, RET, RETCOM, POP_ONE_FP,
3648: FP_CALL1, FP_CALL): Move to tm-i386.h for use by i386.md.
3649: (output_movf, fp_call_internal, output_fix_trunc, split_di):
3650: No longer static - called from i386.md.
3651: (via_memory): Finish return value change.
3652: (output_move_const_double): Delete unused function.
3653: (simple_386_epilogue): New predicate.
3654: (function_prologue): Allocate frame regardless of whether or not
3655: there is a frame pointer.
3656: Use output_asm_insn instead of fprintf to push registers.
3657: (function_epilogue): Likewise.
3658: If there is a frame pointer, don't necessarily fix %esp just to
3659: pop a reg - use offset from frame pointer.
3660: Fix -fomit-frame-pointer support.
3661: Fix RETURN_POPS_ARGS case where args > 32K bytes.
3662: (print_operand): A LABEL_REF gets an OFFSET_PREFIX too.
3663: (print_operand_address): %esp can only be base reg, never index.
3664: (split_di): New function.
3665:
3666: * tm-i386.h: Remove references to obsolete tm-compaq.h file.
3667: (TARGET_486): New flag.
3668: (TARGET_SWITCHES): New options -m486, -mno486, -m386.
3669: (SMALL_REGISTER_CLASSES): New macro.
3670: (ASM_OUTPUT_LOOP_ALIGN): New macro.
3671: (all reg macros, ARG_POINTER_REGNUM): Create argument pointer,
3672: to be eliminated in favor of %esp or %ebp.
3673: (HARD_REGNO_NREGS, REGNO_REG_CLASS): Use FP_REGNO_P.
3674: (REGISTER_MOVE_COSTS): It is expensive to move between integer and
3675: float registers.
3676: (FP_REGNO_P): Detect only the FP regs.
3677: (all class macros): Delete obsolete classes ABC_REGS & ABCI_REGS.
3678: (REG_CLASS_FROM_LETTER): Add `S' for SIREG, remove `x' for ABCI_REGS.
3679: (CONST_OK_FOR_LETTER_P): Add `J' for DImode shifts.
3680: (FIRST_PARM_OFFSET): Offset now zero.
3681: (ELIMINABLE_REGS, CAN_ELIMINATE, INITIAL_ELIMINATION_OFFSET):
3682: Use generalized scheme to eliminate frame and arg pointers.
3683: (INITIAL_FRAME_POINTER_OFFSET): Delete.
3684: (REG_OK_FOR_BASE_P): allow virtual arg pointer.
3685: (FP_TOP, AT_SP, RET, RETCOM, POP_ONE_FP, FP_CALL1, FP_CALL):
3686: Moved here from out-i386.c for use by i386.md.
3687:
3688: * tm-compaq.h: Delete obsolete file.
3689:
3690: Sun May 12 18:38:41 1991 Ken Raeburn (raeburn at watch.com)
3691:
3692: * cplus-decl.c (print_binding_level, print_binding_stack,
3693: print_other_binding_stack): New debugging routines; dump one or
3694: more binding levels to stderr.
3695:
3696: * cplus-decl.c (push_to_top_level): New routine; saves copies of
3697: all class and local bindings, and some other state, and clears the
3698: real values, to effectively move to global scope.
3699: (pop_from_top_level): Restore the saved state.
3700:
3701: * cplus-decl.c (adjust_type_value): No longer static. Abort if
3702: current_binding_level is class binding level; need to investigate
3703: that situation further.
3704:
3705: * cplus-decl.c (finish_function): Check that the binding level being
3706: popped really is a function-parameter binding level.
3707:
3708: * cplus-tree.h (DESTRUCTOR_DECL_PREFIX): Replaces
3709: DESTRUCTOR_DECL_FORMAT; used as a prefix before the class name.
3710: * cplus-decl2.c (grokclassfn): Use it, and call build_overload_name
3711: rather than just copying the class name.
3712:
3713: * cplus-method.c (fndecl_as_string): Use TREE_TYPE rather than
3714: indirecting through type name and the identifier's associated type,
3715: since the latter may have changed.
3716: (build_nested_name): New argument, text_end; callers changed. Call
3717: build_overload_identifier rather than copying class name.
3718: (build_overload_value): Strip non-lvalue nodes for all arguments.
3719: Fixed up the handling of negative DImode values.
3720: (build_overload_identifier): New function. Copy class name (with
3721: length) if non-template, or build a name from template parameters.
3722: (build_overload_name): Call build_overload_identifier for class
3723: names.
3724:
3725: * cplus-parse.y: Added comment about use of $$ for $1.
3726: (template_type_name): Removed useless precedence specificiation.
3727: (template_arg_list): Wrap TREE_LIST nodes around all arguments in
3728: the list.
3729: (template_arg): Call groktypename on type names. For expressions,
3730: specify "UNARY" precedence.
3731: (PRE_PARSED_CLASS_DECL handling): Put a copy of the new class decl
3732: into global scope, to avoid recursive expansion, since we start in a
3733: non-global scope set up for the parameters.
3734:
3735: * cplus-pt.c (coerce_template_parms): New function. Converts
3736: template arguments to appropriate types, returns a vector containing
3737: results.
3738: (mangle_class_name_for_template): Removed nparms argument.
3739: Changed to deal with arglist as vector. No longer call
3740: groktypename. Some initial code added for PARM_DECL (non-type)
3741: parameters; work not completed.
3742: (lookup_template_class): Call coerce_template_parms. Removed some
3743: unused code.
3744: (push_template_decls, pop_template_decls): Fixed to deal with
3745: arglist as vector. More code for non-type parameters.
3746: (instantiate_template): Push to top binding level before pushing any
3747: declarations.
3748: (end_template_instantiation): Pop from top level, then push the new
3749: decl at top level.
3750:
3751: * cplus-tree.h (struct lang_identifier): Renamed field "template" to
3752: "class_template_info"; accessor macros changed.
3753:
3754: * cplus-pt.c (struct template_info): Renamed from "template".
3755: Removed unused fields.
3756:
3757: Sun May 12 17:38:46 1991 Jim Wilson (wilson at cygnus.com)
3758:
3759: * unroll.c (copy_loop_body): Fix typo: had `==' for `='.
3760:
3761: Sun May 12 17:05:07 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3762:
3763: * genattrtab.c (gen_attr): Clear has_asm_insn field in new object.
3764:
3765: Sun May 12 04:21:52 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
3766:
3767: * hard-reg-set.h (HARD_CONST): New macro. Converts integer
3768: constants to appropriate type for use with HARD_REG_SET.
3769: ({SET,CLEAR,TEST}_HARD_REG_BIT): Use this macro where appropriate.
3770: (GO_IF_HARD_REG_SUBSET): Ditto.
3771: (HARD_REG_SET): Add new case if FIRST_PSEUDO_REGISTER <=
3772: HOST_BITS_PER_LONGLONG.
3773: * global-alloc.c: Pass HARD_CONST (0) instead of 0 to functions
3774: which are looking for a HARD_REG_SET argument.
3775: * reorg.c (resource_conflicts_p): Change comparison of HARD_REG_SET
3776: value to compare against HARD_CONST.
3777:
3778: * all xm-*.h files: Added HOST_BITS_PER_LONGLONG where
3779: HOST_BITS_PER_LONG was defined.
3780: * tm-sparc.h (REG_CLASS_CONTENTS): Fixed in case we're using long
3781: long HARD_REG_SETs.
3782:
3783: * toplev.c (main): support -gdwarf switch.
3784:
3785: * longlong.h (umulsidi3): SPARC .umul routine returns the value in
3786: WORD_LITTLE_ENDIAN form, so swap. Other word-endian changes for
3787: inline mul routines.
3788:
3789: * gnulib2.c (__divdi3): If C is nonzero, negate whole division
3790: instead of returning negation of quotient.
3791:
3792: Sat May 11 20:06:08 1991 Torbjorn Granlund (tege at krishna.sics.se)
3793:
3794: * expmed.c (outside of functions): New vars: lea_cost, lea_max_mul.
3795: (init_expmed): Initialize lea_cost and lea_max_mul.
3796: (synth_mult): Use them.
3797:
3798: Sat May 11 20:11:41 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
3799:
3800: * cplus-class.c (build_vbase_path): Rewritten and simplified.
3801: * cplus-cvt.c (build_up_reference): Try to get away without building
3802: a NOP_EXPR around the return value of `build_component_addr'.
3803: Ditto for return value from `convert_pointer_to'.
3804:
3805: * cplus-decl.c (void_zero_node): New node. Used in conditional
3806: expressions where one arm must do nothing.
3807: * various places: replace calls that built this node dynamically to
3808: just use the global copy.
3809: * cplus-tree.h (void_zero_node): Declare it globally.
3810:
3811: (maybe_build_cleanup): Don't call `convert_force' on the return
3812: value of `build_unary_op'. We should have license to modify its
3813: type without harm.
3814: * cplus-gc.c (protect_value_from_gc): Same idea for VAR_DECL and
3815: PARM_DECL nodes.
3816:
3817: * toplev.c (f_options): Add choice for -fPIC.
3818:
3819: * varasm.c (assemble_function): If it's a function name that's the
3820: first global name, strip of a leading '*' if there is one.
3821:
3822: * reload.c (find_reloads): Fix comment.
3823:
3824: * stmt.c (expand_return): Call `any_pending_cleanups' with argument.
3825:
3826: * expr.c (expand_expr): In TARGET_EXPR case, If TARGET is null and
3827: DECL already has rtl, use that as the target.
3828: (expand_expr): In BIND_EXPR try using expand_{start,end}_bindings to
3829: catch cleanups...otherwise fixup_cleanups must be modified to deal
3830: with cleanups not in any contours.
3831:
3832: Sat May 11 15:09:42 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3833:
3834: * out-i386.c (via_memory): Return a memref to the stack.
3835: (fp_call_internal): Change call to via_memory.
3836:
3837: * expr.c (push_block): New arg BELOW specifies padding direction.
3838: All callers changed.
3839: (emit_push_insn): Pass an interesting value for BELOW.
3840:
3841: * c-parse.y (typespec): Pass the TYPE_DECL for a typedef name.
3842: * c-decl.c (grokdeclarator): Handle TYPE_DECL in declspecs.
3843:
3844: Thu May 9 15:17:44 1991 Tom Wood (wood at dg-rtp.dg.com)
3845:
3846: * m88k.md (zero_extend pattern): Compute correct constant.
3847:
3848: Thu May 9 07:44:20 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3849:
3850: * combine.c (subst): Remove WAS_REPLACED; always check the rtl
3851: for specific cases of interest and don't use TO and FROM when
3852: looking into the rtl.
3853:
3854: * combine.c (subst, case MEM): Call make_compound_operation here
3855: so any ASHIFTs will be MULTs for mode_dependant_address_p calls later.
3856: (subst, case PLUS): Remove cases already done elsewhere.
3857:
3858: * expmed.c (emit_store_flag): Don't let the delete_insns_since call
3859: we do kill insns to do an auto-inc.
3860:
3861: * flow.c (propagate_block): Don't treat global regs as clobbered
3862: over a CALL_INSN even if call-clobbered.
3863:
3864: * stmt.c (expand_end_stmt_expr): Correctly handle the case where an
3865: expression statement is just an auto-inc of a var.
3866:
3867: * sparc.md (fix_trunc[sd]fsi2): Finish change to use MATCH_SCRATCH
3868: by eliminating DEFINE_EXPAND and making DEFINE_INSN a named pattern.
3869:
3870: Wed May 8 13:31:23 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3871:
3872: * cccp.c (rescan): Handle symbols before // as before /*.
3873:
3874: * Makefile.in (objc-parse.o): Specify the command.
3875:
3876: * c-parse.y (typespec): Fix previous change.
3877:
3878: * reload1.c (choose_reload_regs): Use spillregs in round robin.
3879:
3880: Wed May 8 11:00:29 1991 Michael Tiemann (tiemann at cygnus.com)
3881:
3882: * cplus-lex.c (tree_node_kinds): Renamed to `tree_node_counts'.
3883:
3884: Wed May 8 05:50:29 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3885:
3886: * integrate.c (copy_rtx_and_substitute): Don't round frame size.
3887:
3888: * loop.c: Must include insn-flags.h to get
3889: HAVE_decrement_and_branch_until_zero.
3890: * Makefile.in (loop.o): Likewise.
3891:
3892: * expmed.c (expand_divmod): Use LOG instead of INTVAL (OP1)
3893: once we start generating rtl.
3894:
3895: Wed May 8 05:38:06 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
3896:
3897: * cplus-decl.c (duplicate_decls): Don't crash on duplicate
3898: TEMPLATE_DECLs.
3899: (globalize_nested_type): Handle globalizing types when
3900: CLASS_BINDING_LEVEL goes out of effect.
3901: (init_decl_processing): Comment out decls for ABS, FABS and LABS.
3902: They conflict with libg++ inlines.
3903:
3904: * cplus-decl2.c (build_push_scope): Fix bug in last change.
3905: (finish_file): Make the dummy decl that we tack on to the global
3906: scope a TYPE_DECL instead of a VAR_DECL. Fake global VAR_DECLs are
3907: problematic on some machines (i.e. MIPS).
3908:
3909: * cplus-init.c (init_vfields): Use TREE_TYPE (VFIELDS) to find the
3910: type for which the VFIELD was last distinguished. This picks up
3911: cases where single inheritance overrides base class vtables and the
3912: base class does not get a new vtable for the override.
3913:
3914: * cplus-parse.y (named_class_head_sans_basetype): Handle a
3915: `template_type_name' by itself. This happens with e.g.
3916: friend class Stack<T>.
3917:
3918: * cplus-pt.c (mangle_class_name_for_template): Put ',' between
3919: parameters.
3920: (push_template_decls): Don't crash if ARGLIST is ERROR_MARK_NODE.
3921:
3922: * cplus-class.c (finish_base_struct): Compute MAX_HAS_VIRTUAL by
3923: looking at all the base classes relevant to VFIELDS.
3924: (build_vbase_path): Initialize NONNULL to zero.
3925:
3926: Tue May 7 23:47:42 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3927:
3928: * stmt.c (any_pending_cleanups): Don't fail if block_stack is empty.
3929:
3930: Tue May 7 22:46:16 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3931:
3932: * cse.c (simplify_binary_operation; case EQ, NE): Don't assume
3933: the address of a symbol is non-zero.
3934:
3935: * sched.c (schedule_insns): Ensure we free memory used by
3936: schedule_block when using the C alloca.
3937:
3938: Tue May 7 14:13:57 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3939:
3940: * reload1.c (mark_reload_reg_in_use): New arg MODE. Mark all the regs.
3941: (choose_reload_regs): Pass that arg; don't loop here.
3942:
3943: * c-parse.y (typespec): Convert a TYPENAME to its meaning.
3944:
3945: * fold-const.c (fold): Don't assume symbolic constant is nonzero.
3946:
3947: * c-typeck.c (c_expand_asm_operands): Convert arrays, fcns to pointers.
3948:
3949: Mon May 6 23:29:21 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3950:
3951: * cse.c (cse_insn): Only make a REG_WAS_0 note if the previous
3952: set was to the same register, not just the same quantity;
3953: if previous REG_WAS_0 note, update back pointer.
3954: If setting a register to a constant, update QTY_CONST and
3955: QTY_CONST_INSN so it points to the last set.
3956: In special case for (set REG0 REG1), ensure any REG_WAS_0 notes are
3957: updated correctly.
3958:
3959: * genrecog.c (make_insn_sequence): Don't clobber `i' when it is
3960: still needed.
3961:
3962: * out-vax.c (print_operand_address): Fix bug in last change in handling
3963: (plus (reg) (reg)).
3964:
3965: Mon May 6 16:41:50 1991 Torbjorn Granlund (tege at zevs.sics.se)
3966:
3967: * expmed.c (synth_mult): Make it handle t == 0. Improve comments.
3968: Use (max_cost <= add_cost) instead of (max_cost < add_cost) to
3969: determine if we should fail early (to better prune the search).
3970: Remove loop with n from factor synthesis. Remove -2 bias from m
3971: loop (for clearity). Add code to use load-effective-address
3972: instructions. Use bit-fiddling instead of loop to determine q in
3973: the last synthesis case.
3974:
3975: Mon May 6 11:21:45 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3976:
3977: * c-typeck.c (convert_for_assignment): Reword an error message.
3978:
3979: * c-typeck.c (build_conditional_expr): Typo in last change.
3980:
3981: * Makefile.in (enquire, enquire.o): Depend on gnulib.
3982:
3983: Sun May 5 17:28:22 1991 (Eric Youngdale at [email protected])
3984:
3985: * make-cc1.com: Update for GCC 2.0; build insn-attr.h, insn-attrtab.c.
3986: Compile and add obj to linker list: c-aux-info.c, c-common.c, c-lang.c,
3987: aux-output.c, calls.c, dwarfout.c, function.c, reorg.c, sched.c,
3988: sdbout.c, unroll.c, insn-attrtab.c. Remove references to symout.c.
3989:
3990: Sun May 5 15:32:01 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
3991:
3992: * Makefile.in (rest.encap): Make gnulib before float.h.
3993:
3994: * c-typeck.c (build_conditional_expr):
3995: Don't assume symbolic constant is nonzero.
3996:
3997: * reload1.c (choose_reload_regs): Ignore avoid_return_reg.
3998: (reload_as_needed, reload): Don't bother setting avoid_return_reg.
3999:
4000: Sun May 5 14:30:14 1991 Michael Tiemann (tiemann at cygint.cygnus.com)
4001:
4002: * cplus-class.c (prev_class_type): Declare this to be static.
4003: (build_vbase_path): Test NONNULL to decide whether a COND_EXPR is
4004: actually needed.
4005: (finish_struct): Another sort of hard virtual function to deal with
4006: is one which comes from the non-leftmost baseclass, and who's index
4007: is different between that class and the main derived class. Use new
4008: variable DOING_HARD_VIRTUALS to control when we punt and when we
4009: plow through.
4010: (modify_vtable_entry): If we find at this point that we have a hard
4011: virtual function, just put it on the list PENDING_HARD_VIRTUALS if
4012: DOING_HARD_VIRTUALS is nonzero.
4013: (fixed_type_p): Handle SAVE_EXPR, RTL_EXPR, PLUS_EXPR, MINUS_EXPR,
4014: NOP_EXPR and CONVERT_EXPR.
4015: (pushclass): Fixed comment. Also change test for whether this is
4016: the top-level class scope from an obscure one to an obvious one, and
4017: add comment.
4018: (pushclass,popclass): Now always allocate a binding level. Later
4019: we'll have to rewrite this to actually use it.
4020:
4021: * cplus-gc.c (type_needs_gc_entry): Don't need a GC entry for
4022: ERROR_MARK_NODE.
4023:
4024: * cplus-init.c (build_new): Set TREE_CALLS_NEW on RTL_EXPR. This
4025: gives us a case that `fixed_type_p' can grok.
4026:
4027: * cplus-lex.c (identifier_type): Make this __inline if compiling
4028: with GNU C.
4029: (tree_node_kinds): Renamed to `tree_node_counts'.
4030:
4031: * cplus-parse.y (various places): Take advantage of default rule
4032: `$$ = $1', and where possible, use $$ instead of $1.
4033: Also, back out change for setting `looking_for_typename' to 1 at top
4034: level.
4035:
4036: * cplus-decl2.c (build_push_scope): If the user gives X::foo in X's
4037: scope, don't return a SCOPE_REF. Just return `foo' instead.
4038:
4039: * cplus-decl.c (init_decl_processing): Don't define `alloca' as a
4040: built-in function until libg++ header files agree with its built-in
4041: type.
4042: (finish_decl): Don't crash if TYPE is error_mark_node.
4043:
4044: * fold-const.c (split_tree): When splitting the tree, don't call
4045: convert if the TYPE_MODEs are the smae. This screws up C++ where
4046: conversion of one pointer type to another can cause the pointer's
4047: value to change.
4048:
4049: * tree.c (get_identifier): Speed up `get_identifier' by about a
4050: factor of 2. This becomes noticable with the long names used for
4051: C++ overloading.
4052: (tree_cons): Make this most frequent user of `make_node' perform its
4053: actions inline.
4054:
4055: * calls.c (expand_call): Eliminate many (most) calls to strcmp by
4056: being smarter about when to call it. Also, don't call `push_block'
4057: in the trivial case when it's not needed.
4058:
4059: Sun May 5 08:51:14 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4060:
4061: * expr.c (convert_to_mode): Fix (for the second time) test for when
4062: gen_lowpart should be called.
4063:
4064: * cse.c (find_best_addr): Try to fold address.
4065: (fold_rtx): Do associativity and (not (not ...)) checks here.
4066: (cse_insn): Not here.
4067:
4068: * combine.c (recog_for_combine): New parameter, PNOTES.
4069: When we add a CLOBBER, put a REG_UNUSED note for it in *PNOTES.
4070: (try_combine): Call recog_for_combine with new parameter.
4071: Delete any now-invalid REG_UNUSED notes in OTHER_INSN and add any
4072: required new ones.
4073: Add REG_NOTES to I3 and I2 due to added CLOBBERs.
4074: (remove_death): Call new function, remove_note.
4075: (move_deaths): Don't get confused by a CLOBBER.
4076: (distribute_notes): Don't make duplicate REG_UNUSED notes.
4077: Don't put a REG_DEAD note on an insn when the register is
4078: partially modified, but remains valid.
4079:
4080: * rtlanal.c (remove_note): New function.
4081:
4082: * combine.c (try_combine): When making a PARALLEL that does a compare
4083: and arithmetic, don't simplify the COMPARE.
4084:
4085: * combine.c (try_combine): Validate that I1DEST isn't being
4086: modified invalidly.
4087:
4088: * combine.c (simplify_comparison): In ZERO_EXTRACT case, add missing
4089: test for equality comparison against zero; also invert comparison
4090: condition.
4091: If we can't do a comparison in a narrower mode, but we know that
4092: some wider bits are zero, see if we can do it in a wider more.
4093:
4094: * cse.c (simplify_binary_operation): Remove obsolete code to convert
4095: negative shift counts to the opposite shift.
4096: Don't fold invalid shifts since they may trap (e.g., on Vax).
4097:
4098: * reload1.c (emit_reload_insns): Use rtx_equal_p to see if a result
4099: is already in the desired register.
4100:
4101: * combine.c (find_split_point): Add two more ways to split an insn.
4102:
4103: * combine.c (gen_binary): Put a complex operand first in addition to
4104: putting constants second, just like subst would do.
4105:
4106: * combine.c (significant_bits): Correct computation of significant bits
4107: for division operations.
4108:
4109: * combine.c (apply_distributive_law): Reject complex SUBREGs.
4110: SUBREG distributes over logical and addition operations.
4111:
4112: * combine.c (subst; case AND, IOR, XOR): Add some boolean
4113: arithmetic simplifications.
4114:
4115: * expr.c (do_jump): ADDRESS_EXPR is not always zero, unfortunately.
4116:
4117: * expr.c (do_store_flag): In case where we are testing a single bit,
4118: don't convert to output mode until after we do the shift.
4119:
4120: * optabs.c (expand_binop, expand_unop, expand_fix): Compare
4121: enum insn_code objects against CODE_FOR_nothing instead of 0.
4122:
4123: * romp.md (bit_insv): Use CC0 in standard way; i.e., in NE.
4124:
4125: Sat May 4 20:41:12 1991 (Eric Youngdale at [email protected])
4126:
4127: * c-aux-info.c (gen_aux_info_record): Use getcwd on VMS a la USG.
4128: * dbxout.c: Same here.
4129: * xm-vms.h: Define unlink as remove
4130: (GCC_INCLUDE_DIR): Provide a dummy definition.
4131:
4132: Sat May 4 16:46:48 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4133:
4134: * combine.c (can_combine_p, try_combine): Use SMALL_REGISTER_CLASSES
4135: to indicate when it is valid to do combines involving hard registers.
4136: * cse.c (canon_hash): #ifdef SMALL_REGISTER_CLASSES, don't record
4137: hard registers unless they are fp, ap, sp or are fixed.
4138: * loop.c (valid_initial_value_p): #ifdef SMALL_REGISTER_CLASSES,
4139: hard register aren't valid initial values.
4140: * reload1.c (reload): Initialize FORBIDDEN_REGS depending on
4141: whether we have small register classes or not.
4142:
4143: * ns32k.md: Replace const_int with const_int_operand.
4144: Remove HImode extractions.
4145: Remove patterns assigning an AND to CC0.
4146: (andcbxx3): Remove name and eliminate case with NOT as second operand.
4147: (sbitx, cbitx): Remove patterns involving IOR and ASHIFT; add patterns
4148: with ZERO_EXTRACT as destination.
4149: (ibitx): Put ASHIFT as first operand in XOR.
4150: (bitfield compare): Remove comparison of 1 bit field with 1; combine
4151: converts this to comparison with zero.
4152: (and-compare-branch): Fold PLUS or MINUS into constant, like combine
4153: will do.
4154: Remove patterns for reversed cases.
4155: * out-ns32k.c (const_int): Deleted.
4156:
4157: * rtlanal.c (reg_used_between_p, reg_set_between_p): Use GET_RTX_CLASS.
4158: (reg_set_p_1): If we are setting a MEM, don't think we are setting
4159: registers used in its address.
4160:
4161: * m68k.md (cmpsf, cmpdf, tstsf, tstdf for FPA): Use MATCH_SCRATCH.
4162: * sparc.md (memory store patterns): Likewise.
4163:
4164: * function.c (assign_parms): Function is varargs function if the
4165: last parameter is `__builtin_va_alist_' instead of checking the first
4166: parameter. Normally, this is the same, but some functions in MACH
4167: have named parameters before va_alist.
4168:
4169: * combine.c (simplify_comparison): Remove abort on paradoxical SUBREGs
4170: now that we know they can occur.
4171:
4172: * reload.c (decompose): Handle SCRATCH; it can't conflict with
4173: anything.
4174: (find_reloads): All operands can set earlyclobber, not just REG & MEM.
4175: Add support for "X" constraint.
4176: SCRATCH does not match "g" constraint.
4177:
4178: Sat May 4 14:03:16 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
4179:
4180: * enquire.c (EPROP): Avoid a <= out if bad is set.
4181:
4182: * SYSCALLS.c: Test bsd4_2 along with BSD.
4183:
4184: Fri May 3 14:26:51 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
4185:
4186: * c-decl.c (pushdecl): Stop looping on type if find error mark.
4187:
4188: * loop.c (invariant_p): An address with a PLUS is not the same as
4189: MEM_IN_STRUCT_P being set.
4190:
4191: * tree.h (TREE_NO_UNUSED_WARNING): New macro.
4192: * stmt.c (warn_if_unused_value): That flag suppresses warnings.
4193: * c-typeck.c (build_unary_op): Set flag when converting postinc.
4194:
4195: Fri May 3 08:09:47 1991 Tom Wood (wood at dg-rtp.dg.com)
4196:
4197: * tm-m88k.h (GO_IF_LEGITIMATE_ADDRESS): Remove workarounds for
4198: register elimination problems.
4199:
4200: Fri May 3 07:14:22 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4201:
4202: * a29k.md: Fix typo in dmac pattern.
4203: Make many define_splits that convert DFmode and DImode to one word
4204: at a time to operate only after reload completes to improve reg alloc.
4205: (movdf): Correct typo in mfacc.
4206: (rotlsi3): Count is QImode, not SImode.
4207:
4208: * tm-a29kunix.h (BIGGEST_ALIGNMENT): Change to 64.
4209:
4210: * tm-romp.h (OPTIMIZATION_OPTIONS): Enable insn scheduling.
4211: (register definitions): No longer need dummy register and class;
4212: register numbers for FP register change.
4213: * romp.md: Use MATCH_SCRATCH instead of allocating pseudos
4214: to the dummy register class or base register depending on alternative.
4215: (FP insns): Add missing "=" to constraints in CLOBBERs.
4216: (extendqisi2, extendqihi2): Now DEFINE_EXPAND.
4217: (mc03 peephole): Can do if right shift >= 24 bits.
4218: * out-romp.c (reg_15_operand): Remove special case for FP delay slot.
4219: (romp_sa_size, output_fpop, output_loadsave_fpops, output_fpops):
4220: Change floating-point register numbers.
4221:
4222: * combine.c (simplify_shift_const, case for shifts): Verify that
4223: the host word size is wide enough.
4224: Properly handle (ashift (subreg (ashiftrt ...) ...) ...).
4225:
4226: * out-vax.c (print_operand_address, case PLUS): Handle all addresses
4227: accepted by GO_IF_LEGITIMATE_ADDRESS.
4228:
4229: * explow.c (plus_constant): force_const_mem does not necessarily
4230: return a valid address.
4231: * integrate.c (copy_rtx_and_substitute): Likewise.
4232:
4233: * Makefile.in (local-alloc.o): Includes output.h.
4234: * rtl.def (SCRATCH, MATCH_SCRATCH): New RTL codes.
4235: * regs.h (max_scratch): Add definition.
4236: * genconfig.c (walk_insn_part): Handle MATCH_SCRATCH.
4237: * genextract.c (walk_rtx): Likewise.
4238: * genemit.c (max_operand_1): Likewise.
4239: (gen_exp): Emit a SCRATCH for for MATCH_SCRATCH.
4240: (gen_insn): We can create (clobber (scratch)).
4241: * genoutput.c (scan_operands): Handle MATCH_SCRATCH;
4242: use switch instead of if's.
4243: * genrecog.c (make_insn_sequence): We can created (clobber (scratch)).
4244: (add_to_sequence): Handle MATCH_SCRATCH.
4245: * flow.c (life_analysis): Initialize max_scratch.
4246: (propagate_block): Update max_scratch with count from this block.
4247: (mark_set_1): Make REG_UNUSED note for SCRATCH and count it.
4248: * local-alloc.c: Include output.h.
4249: (qty_scratch_rtx): New variable.
4250: (alloc_qty): Rename INSN_NUMBER to BIRTH since that's what it is.
4251: (alloc_qty_for_scratch): New function.
4252: (local_alloc): Account for quantities needed for SCRATCH.
4253: Allocate and initialize qty_scratch_rtx.
4254: (block_alloc): Allocate quantities for SCRATCH operands.
4255: (requires_inout_p): Add "X" constraint.
4256: * recog.c (scratch_operand): New function.
4257: (constrain_operands): SCRATCH matches a register constraint unless
4258: strict.
4259: Add "X" constraint.
4260: * regclass.c (reg_class_record): Add "X" constraint.
4261: * reload1.c (emit_reload_insns): Add SCRATCH to test for operand that
4262: dies right away; update REG_UNUSED note for SCRATCH.
4263: Never need reload insn for SCRATCH, even if no REG_UNUSED note.
4264: * rtlanal.c (reg_mentioned_p, reg_overlap_mentioned_p, rtx_equal_p):
4265: Support SCRATCH.
4266: (volatile_refs_p, side_effects_p, may_trap_p): Likewise.
4267: (inequality_comparisons_p, replace_regs): Likewise.
4268:
4269: * flow.c (mark_set_1): Don't do anything special with partial
4270: assignments; this is already handled by mark_used_regs and we now
4271: want to make LOG_LINKS for these.
4272:
4273: * combine.c: Includes expr.h.
4274: (expand_field_assignment, make_extraction): New functions.
4275: (get_pos_from_mask, make_field_assignment): Likewise.
4276: (can_combine_p): Remove special case for SUBREG in SET_DEST; call
4277: expand_field_assignment instead.
4278: (try_combine): Remove code to handle STRICT_LOW_PART here.
4279: Call expand_field_assignment on SETs in I3.
4280: (find_split_point): Split up simple cases of bitfield assignments.
4281: (subst, case ZERO_EXTRACT): Remove processing of ZERO_EXTRACT in a
4282: SET_DEST from here.
4283: (subst, case SET): Try to convert this into a field assignment by
4284: calling make_field_assignment.
4285: No need to call make_compound_operation for COMPAREs;
4286: make_compound_operation now returns an rtx and is no longer passed
4287: a pointer.
4288: Remove tests for ZERO_EXTRACT in SET_DEST.
4289: (make_compound_operation): Now returns rtx and is passed rtx, instead
4290: of rtx *.
4291: Call make_extraction.
4292: (simplify_comparison): Call make_compound_operation here and remove any
4293: outermost SUBREGs that aren't doing anything.
4294:
4295: * Makefile.in (combine.o): Includes expr.h.
4296:
4297: * expr.c (convert_to_mode): Correct which cases can use gen_lowpart.
4298:
4299: * final.c (final_scan_insn): Don't set INSN_DELETED_P after writing
4300: insn.
4301:
4302: * genoutput.c (main): Don't include aux-output.c in insn-output.c.
4303: Include stdio.h before output.h.
4304: (output_epilogue): Write definitions for all the predicates
4305: placed in `insn_operand_predicate'.
4306: * output.h: No longer need to define operand-predicate functions.
4307: * configure: (m88k/dg): Only difference between xm-m88k{,dgux}.h was
4308: definition of SEPARATE_AUX_OUTPUT, so we don't need xm-m88kdgux.h.
4309: * xm-m88kdgux.h: Deleted.
4310: Fix typo setting `target' in Makefile.
4311: * Makefile.in (AUX_OUTPUT2): Deleted.
4312: (OBJS): Remove AUX_OUTPUT2 and add aux-output.o.
4313: (aux-output2.o): Now aux-output.o.
4314: (insn-output.o): No longer depends on aux-output.c.
4315: * make-m88kdgux (AUX_OUTPUT2): No longer define.
4316: * tm-m68k.h, tm-romp.h, tm-sparc.h: Define functions in out-*.c and
4317: used by insn-output.c.
4318: * tm-m88k.h: Remove conditionalization for SEPARATE_AUX_OUTPUT; now
4319: always done.
4320: No longer define predicate functions; done by genoutput.c.
4321: * tm-mips.h: No longer define SEPARATE_AUX_OUTPUT.
4322: * out-*.c: Add includes previously present in insn-output.c.
4323: * out-sparc.c (output_fp_move_double): No longer static.
4324: (output_sized_memop): No longer need to define asm_out_file here.
4325: (output_function_epilogue): Correct type; function is void, not char *.
4326:
4327: Fri May 3 01:05:44 1991 Micheal Tiemann (tiemann at pogo.gnu.ai.mit.edu)
4328:
4329: * sdbout.c (sdbout_one_type): TYPE_FIELDs may contain other kinds of
4330: _DECL nodes than just FIELD_DECL nodes (in GNU C++, at least).
4331: Don't look through such nodes until further mods are made to handle
4332: them better.
4333:
4334: Thu May 2 14:43:48 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
4335:
4336: * c-decl.c (finish_enum): Don't store enum type as type of value.
4337:
4338: * c-parse.y (YYPRINT, yyprint): New macro and new function.
4339:
4340: * expmed.c (expand_and): Handle both args constant.
4341:
4342: * expr.c (store_field): Avoid refetching from bitfield if possible.
4343:
4344: * math-68881.h (pow): Negate x if negative when taking log.
4345:
4346: * expr.c (emit_move_insn): Fixed typo in `y1 = change_address' call.
4347: Reenable the code to move objects word at a time.
4348:
4349: Thu May 2 12:29:16 1991 Eric Youngdale (youngdale at v6550c.nrl.navy.mil)
4350:
4351: * cccp.c (hack_vms_include_specification): Modified conversion of
4352: unix filenames to VMS filenames, if no VMS device or directory is
4353: present, and a unix style directory name is present, then use the
4354: first unix directory name as the VMS device spec. This is only
4355: used in '#include <...>' type includes, when the include file has
4356: not been found in the standard locations.
4357:
4358: Thu May 2 10:06:47 1991 Micheal Tiemann (tiemann at pogo.gnu.ai.mit.edu)
4359:
4360: * cplus-decl.c (init_decl_processing): Call init_gc_processing if
4361: -fgc is requested.
4362: * cplus-init.c (build_new): Argument to build_compound_expr must be
4363: a TREE_LIST all the way. The last elt of the chain cannot be an
4364: _EXPR.
4365:
4366: Thu May 2 07:33:50 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4367:
4368: * expr.c (expand_expr, case CONVERT_EXPR): Pass bitsize to store_field
4369: instead of size in bytes.
4370:
4371: Wed May 1 13:33:58 1991 Micheal Tiemann (tiemann at pogo.gnu.ai.mit.edu)
4372:
4373: * version.c: Bumped version number to 1.93.
4374:
4375: Wed May 1 12:26:36 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
4376:
4377: * gcc.c (link_command_spec): Pass plain -m to ld.
4378:
4379: * c-decl.c (finish_enum): Clean up re-laying out of type.
4380:
4381: Wed May 1 08:04:44 1991 Michael Tiemann (tiemann at cygnus.com)
4382:
4383: * Makefile.in: Handle new cplus-*.c files.
4384:
4385: * cplus-typeck.c (common_base_type): Make this function recursive.
4386: (build_component_ref): Test whether or not a FIELD_DECL, not whether
4387: or not a VAR_DECL||CONST_DECL||TYPE_DECL.
4388:
4389: * cplus-parse.y: Fixed grammar so that template type decls could be
4390: used. Previously, support existed for template decls following
4391: types, but not as types.
4392: * cplus-pt.c ({push,pop}_template_decls): New functions.
4393: (instantiate_template): Call `push_template_decls'.
4394: (end_template_instantiation): Let `poplevel' restore old bindings.
4395: No need to clear out extra stuff.
4396: (pushclass, popclass): Call `{push,pop}_template_decls' if the class
4397: we are pushing or popping has template arguments. These arguments
4398: go at class level.
4399:
4400: * cplus-method.c (build_opfncall): Test TRY_SECOND before testing
4401: possibly uninitialized XARG2.
4402:
4403: * cplus-lex.c (init_lex): Initialize NODE_TABLE, OPNAME_TAB and
4404: ASSIGNOP_TAB to hold zero. Since these come from malloc'd memory,
4405: we cannot trust them to be initialized on startup.
4406:
4407: * cplus-init.c (expand_aggr_init_1): When initializing through a
4408: TARGET_EXPR for objects of the same type (e.g., X a = X (10);)
4409: use EXP's DECL_RTL as the DECL_RTL of the TARGET_EXPR.
4410:
4411: * cplus-decl2.c (finish_file): Handle new flag `-fgnu-binutils'.
4412: When zero, don't use GNU extensions to a.out format. ???Should be
4413: merged into varasm.c.
4414:
4415: * cplus-class.c: Added support for `dossiers'. This support is
4416: implemented by extending the virtual function table and by giving
4417: all C++ objects a virtual function table to hold it's dossier.
4418: * cplus-decl.c (record_builtin_type): New function to construct
4419: dossier information for built-in types.
4420: (output_builtin_tdesc_entries): To keep repeated information under
4421: control, we only output this information for the file that contains
4422: `main'.
4423: (init_decl_processing): Many dossier-related changes.
4424: (init_lex): Recognize new reserved words `headof' and `classof' if
4425: -fgc.
4426: * cplus-parse.y: Grammar now recognizes `headof' and `classof'
4427: expressions.
4428: * cplus-method.c: Added dossier constructors here.
4429: * cplus-tree.h (CLASSTYPE_DOSSIER): New macro: `dossier' is a new
4430: field in lang_type.
4431: * cplus-typeck.c (convert_for_assignment): Handle
4432: `class_star_type_node'.
4433:
4434: * cplus-class.c: New variable current_class_depth. Used to tell
4435: what class nesting level the compiler is at.
4436: * cplus-decl.c (grokdeclarator): Now supports references to decls
4437: that come from nested types. For example, int foo::bar (foo_tag);
4438: where `foo_tag' is a tag that comes from foo. Previously this was
4439: supported only as int foo::bar (foo::foo_tag);
4440: * cplus-decl2.c (build_push_scope): build a SCOPE_REF node while
4441: pushing into the context for the scope. When `grokdeclarator' sees
4442: one of these nodes (distinuished by its TREE_COMPLEXITY being set to
4443: the current_class_depth), it processes the decl and pops the scope.
4444:
4445: * cplus-class.c (build_vbase_path): Trust objects that are
4446: `fixed_type_p'. Also, don't assume an object is non-null unless
4447: flag says this is explicitly so. InterViews creates and may
4448: manipulate (via delete) lots of null objects.
4449: (build_vfn_reference): Use IS_AGGR_TYPE test on type, not in
4450: INSTANCE.
4451: (resolves_to_fixed_type_p): New argument NONNULL is used in case we
4452: know and object to be non-zero. All callers changed.
4453:
4454: * cplus-call.c: New file, from file cplus-class.c. Contains code to
4455: generate method calls.
4456: * cplus-class.h: New file, contains common declarations for
4457: cplus-class.c and cplus-call.c.
4458:
4459: * cplus-class.c (finish_struct_bits): Don't leave last_conversions
4460: uninitialized.
4461:
4462: Tue Apr 30 17:14:00 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
4463:
4464: * expr.c (expand_expr):
4465: Preserve volatility when changing ARRAY_REF to use a pointer.
4466:
4467: * vax.md (indirect_jump): Use parens around register, not @.
4468:
4469: * fixincludes (machine/cpu.h): Delete superfluous `static'.
4470:
4471: * tm-decstatn.h (CPP_PREDEFINES): Define __mips and __LANGUAGE_C.
4472:
4473: * explow.c (allocate_dynamic_stack_space): Compensate if
4474: STACK_POINTER_OFFSET throws off the alignment.
4475:
4476: * loop.c (strength_reduce): Typos setting not_every_iteration.
4477:
4478: Tue Apr 30 16:10:32 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4479:
4480: * vax.md (bicb): Fix typo that caused operand not to be negated.
4481: (jlbs/jlbc): Operand[0] cannot be a constant.
4482:
4483: * rtl.h: Put NOTE_INSN_... codes in order.
4484: (find_regno_note): Add missing definition.
4485:
4486: * reload.c (find_reloads_address): Handle an indexed stack slot that
4487: is made out of range by frame pointer elimination.
4488:
4489: Tue Apr 30 14:09:28 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
4490:
4491: * toplev.c (compile_file): Output gcc2_compiled, not gcc_compiled.
4492: * tm-tower-as.h (ASM_IDENTIFY_GCC): Likewise.
4493:
4494: Tue Apr 30 13:56:40 1991 Tom Wood (wood at dg-rtp.dg.com)
4495:
4496: * varasm.c (output_addressed_constants): Return and indication of
4497: whether the variable requires link-time relocations.
4498: (assemble_variable, get_or_assign_label): Use this value when
4499: choosing the section. Use the data section for variables and
4500: constants that are otherwise read-only when -fpic is given and
4501: when link-time relocations are required.
4502: * tm-*.h (SELECT_SECTION): Accept a new second parameter RELOC.
4503:
4504: Tue Apr 30 10:24:36 1991 Tom Wood (wood at dg-rtp.dg.com)
4505:
4506: * rtl.h (NOTE_INSN_LOOP_VTOP), rtl.c (note_insn_name): Add a new
4507: note indicating the virtual top of a loop.
4508: * jump.c (duplicate_loop_exit_test): Mark the duplicated exit code
4509: in the loop as the virtual top of the converted loop.
4510: (squeeze_notes): Move loop-vtop notes as well.
4511: * loop.c (scan_loop): When a loop-vtop note is encountered, reset
4512: `maybe_never' and `call_passed'.
4513: (strength_reduce): Similarly, reset `not_every_iteration'.
4514:
4515: Tue Apr 30 08:15:50 1991 Michael Meissner (meissner at osf.org)
4516:
4517: * expr.c (do_store_flag): Move the join label after setting the
4518: target value to 0, rather than before, which generates code that
4519: always stores 0 into the target if the machine does not have a
4520: builtin scc operation.
4521:
4522: Tue Apr 30 06:26:36 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4523:
4524: * reload1.c (reload): When making reg_equiv_mem and reg_equiv_address
4525: from reg_equiv_memory_loc, clear the one we aren't setting; it might
4526: have been previously set.
4527:
4528: * final.c (final_scan_insn): Correctly handle when the first insn in a
4529: SEQUENCE is a JUMP_INSN that forces restoration of a comparison
4530: previously thought unnecessary.
4531:
4532: * fold-const.c (fold, case PLUS_EXPR): If we have 2 * real_cst,
4533: fold into a new constant instead of making real_cst + real_cst.
4534:
4535: Mon Apr 29 23:09:17 1991 Ken Raeburn (raeburn at watch.com)
4536:
4537: * cplus-decl.c (output_builtin_tdesc_entries): Corrected
4538: declaration of permanent_obstack.
4539: (init_decl_processing): Record declaration of int with name "int"
4540: rather than null.
4541: (finish_decl): Fix typo in comment.
4542:
4543: * cplus-class.c (finish_struct): Made error message for union
4544: member requiring constructor/destructor a little tidier.
4545: (resolve_scope_to_name): Look at fields of current type as well as
4546: tags, in case of local typedefs.
4547: (build_method_call): Permit explicit call of destructor in class
4548: that doesn't have one. (That's what the ARM says....)
4549:
4550: * cplus-decl.c (set_nested_typename): New function, extracted from
4551: within pushtag. Extended to deal with null classname.
4552: (pushtag): Call it.
4553: (pushdecl): For a TYPE_DECL, ensure that the nested typename gets
4554: set.
4555: (pushdecl_class_level): Ditto.
4556: (constructor_name): Test various assertions.
4557: (hack_incomplete_structures): If type is a class template, punt.
4558:
4559: * cplus-input.c (getch): Renamed from get_character. Callers
4560: changed.
4561: cplus-lex.c (old getch): Deleted.
4562:
4563: * cplus-lex.c (save_pending_input, restore_pending_input): New
4564: functions for saving and restoring lexer state.
4565: (process_next_inline): Restore lexer state after each function.
4566: cplus-pt.c (end_template_instantiation): Ditto.
4567: cplus-input.c (struct input_source, getch, feed_input): Preserve
4568: putback_char and lexer state.
4569:
4570: * cplus-input.c (getch): Return magic cookie on end of saved input
4571: for lexer to recognize.
4572: cplus-lex.c (yylex): Turn it into END_OF_SAVED_INPUT.
4573: (process_next_inline): Require it after inline function body.
4574:
4575: * cplus-lex.c (do_pending_inlines): Don't save away current
4576: file/line-no info; character input processing should do that.
4577: (yyungetc): Turn conditional abort into assertion test.
4578: (note_list_got_semicolon): Since variable "type" is available, use
4579: it rather than recompute.
4580: (identifier_type): Now static.
4581: (yylex): Warn about conflicts with class template expansion names.
4582:
4583: * cplus-parse.y (temporary_scope): New variable.
4584: (object and scoped_id actions): Set it to current type.
4585: (many other actions): Clear it.
4586: (scoped_typename): Now derivable also from scoped_id and TYPENAME.
4587: cplus-lex.c (yylex): If temporary_scope is set, use it to
4588: determine type of current token being examined, instead of looking
4589: always in the global scope. (Can't properly do nested template
4590: classes otherwise.)
4591:
4592: * cplus-ptree.c (print_lang_decl): Print out template-info,
4593: original-name, decl-main-variant, and pending-inline-info nodes if
4594: not null.
4595:
4596: * cplus-pt.c (mangle_class_name_for_template): For negative
4597: numbers, use "m" prefix rather than printf's "-".
4598: (overload_template_name): Test more assertions. Use
4599: SET_IDENTIFIER_TYPE_VALUE macro.
4600: (lookup_template_class): Assert template decl node is non-null.
4601: Push to permanent obstacks for new allocations.
4602: (instantiate_template): Return new class type in a list.
4603:
4604: * cplus-pt.c (undo_template_name_overload): Clear type local
4605: definition of template name.
4606: (end_template_instantiation): Call it.
4607: cplus-parse.y (structsp actions): Ditto.
4608: (named_class_head_sans_basetype): Don't call
4609: overload_template_name here.
4610: (named_class_head): Call xref_tag, to define a tag, before calling
4611: it here.
4612:
4613: * cplus-parse.y (tmpl.1, tmpl.2): Delete type declarations, since
4614: they have no values.
4615: (yyprint, YYPRINT): New function and macro to work with debugging
4616: code added to bison.
4617: (datadef -> template_header... actions): Assign yychar, rather
4618: than calling yyungetc and yylex. Require trailing semicolon.
4619: (fn.def1 -> PRE_PARSED_FUNCTION_DECL action): Preserve all of
4620: terminal value, instead of just TREE_PURPOSE.
4621: (tmpl.1 action): Do instantiation only if '{' or ':' not found.
4622: (template_instantiation): Call overload_template_name right away.
4623: (primary -> .scope new '(' typename ')' '[' ...): Detect and warn
4624: about this construct, which appears to be recognizeable, though
4625: disallowed by the ARM.
4626: (primary -> delete[]): Return error_mark_node.
4627: (primary -> obj TYPESPEC::~TYPESPEC()): Catch, parse as valid.
4628: Returned value not determined yet.
4629: (typespec): No longer derived from PTYPENAME.
4630: (LC): Added missing semicolon at end of rule.
4631: (stmt): A PTYPENAME can also be used as a label name.
4632:
4633: Mon Apr 29 22:18:47 1991 James Van Artsdalen (james at bigtex.cactus.org)
4634:
4635: * tm-att386.h (ASM_OUTPUT_LOCAL): Align static local variables.
4636:
4637: Mon Apr 29 15:20:35 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
4638:
4639: * fold-const.c (fold): Don't assume an address is nonzero.
4640: * cse.c (fold_rtx): Likewise.
4641:
4642: * stmt.c (warn_if_unused_value): No warning for cast of cast of modify.
4643:
4644: * Makefile.in (USER_H): Remove float.h.
4645:
4646: Mon Apr 29 13:46:48 1991 Jim Wilson (wilson at cygnus.com)
4647:
4648: * loop.c (scan_loop): When see a REG_EQUAL note, check for both
4649: the move_insn and the REG_RETVAL case, since they can occur together.
4650: (move_movables): For the move_insn case, handle library calls just
4651: like the older normal case code below, that is, skip to the end of a
4652: library call when when see a REG_LIBCALL note, and delete an entire
4653: library call if when see a REG_RETVAL note.
4654:
4655: Mon Apr 29 12:58:19 1991 Jim Wilson (wilson at cygnus.com)
4656:
4657: * sched.c: (schedule_block): Rewrite code that computes which
4658: registers are live at the end of the block. Compute this from
4659: basic_block_live_at_start info of current block, instead of from
4660: all reachable blocks. Previous code failed if one of the
4661: reachable blocks consisted of dead code.
4662: (sched_note_set): Set bb_live_regs when DEATH is false.
4663:
4664: * sched.c: Update copyright. Correct various problems with
4665: indentation and white space.
4666: (canon_rtx): Delete obsolete code handling INSN_LIST rtx. Add
4667: code to recurse on the operands of a PLUS rtx.
4668: (find_symbolic_term): New function. Recursively search an rtx for
4669: a SYMBOL_REF or a LABEL_REF and return pointer to one if found.
4670: (memrefs_conflict_p): No longer needs to call canon_rtx on
4671: operands of a plus. Now handles case of two addresses with
4672: different base addresses.
4673: (schedule_block): Don't set INSN_DELETED_P bit of ignored notes.
4674: Verify that REG_DEAD notes have a register value.
4675: (sched_analyze_1): Ifdef out obsolete code which calculates cc0
4676: dependencies.
4677: (sched_analyze): Likewise.
4678: (schedule_block): Likewise.
4679: (launch_links): Delete obsolete code for handling SPARC 'orcc' insns.
4680:
4681: Mon Apr 29 12:09:32 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
4682:
4683: * configure: Allow spaces between options and their args.
4684:
4685: Mon Apr 29 06:35:09 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4686:
4687: * jump.c (jump_optimize): Don't emit jump to next insn; this would
4688: cause jump_optimize to loop.
4689: (jump_optimize, duplicate_loop_end_test, do_cross_jump): Never put
4690: insn in jump_chain if its INSN_UID is too large.
4691: (redirect_tablejump): Likewise.
4692:
4693: Sun Apr 28 08:00:01 1991 Michael Tiemann (tiemann at cygnus.com)
4694:
4695: * cplus-decl.c (init_decl_processing): Merge changes in builtin
4696: function handling to match the way that c-decl.c now works.
4697: Also add global variables to support that change.
4698: (define_function): Ditto.
4699:
4700: * cplus-decl2.c: Add flags for gc and xref.
4701: * cplus-tree.h (DECL_GC_OFFEST): New macro for gc.
4702: * cplus-tree.h: Rearrange CLASSTYPE_ASSOC and CLASSTYPE_BASETYPES so
4703: that the former now uses TYPE_LANG_SPECIFIC storage, and the latter
4704: uses TYPE_BASETYPES.
4705: * cplus-tree.h: Change overload names of new and delete to `nw' and
4706: `dl'. Formerly, `new' was being seen as `ne', the encoding for `not
4707: equal'.
4708:
4709: * cplus-xref.c: New file. Adds support for generating
4710: cross-reference information such as a class browser or program
4711: analyzer would use.
4712:
4713: * cplus-gc.c: New file. Add support for garbage collection.
4714: * cplus-decl.c (finish_decl): Tie decls to their places in the
4715: garbage collector.
4716: * cplus-init.c (build_new): Added hooks for gc.
4717: * cplus-typeck.c (convert_arguments): protect arguments from the
4718: garbage collector if -fgc.
4719: (build_modify_expr): More gc-related changes.
4720:
4721: Fri Apr 26 07:31:26 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4722:
4723: * integrate.c (expand_inline_function): Add missing increment of I.
4724:
4725: Thu Apr 25 11:07:11 1991 Tom Wood (wood at dg-rtp.dg.com)
4726:
4727: * m88k.md (various patterns): Use nonimmediate_operand in place of
4728: reg_or_nonsymb_mem_operand and constraint `m' in place of `Q'.
4729: * tm-m88k.h (EXTRA_CONSTRAINT): Only needed for a call address.
4730: * out-m88k.c: reg_or_nonsymb_mem_operand and symbolic_memory_p are
4731: now unused.
4732:
4733: * m88k.md (symbolic store patterns): These patterns are all
4734: unnecessary and are deleted.
4735: * out-m88k.c (emit_move_sequence): Eliminate the case that
4736: generated a CLOBBER. This was intended to use the symbolic store
4737: patterns, but isn't needed.
4738: (symbolic_memory_operand): Delete, no longer used.
4739: (output_prologue): Don't check for suspicious register elimination
4740: changes.
4741: * tm-m88k.h (GO_IF_LEGITIMATE_ADDRESS): Treat the frame pointer
4742: like the argument pointer as both may change to REG+SMALLINT.
4743:
4744: Tue Apr 23 15:08:03 1991 Jim Wilson (wilson at cygnus.com)
4745:
4746: * out-sparc.c (output_scc_insn): Clean up and expand comments.
4747: Don't assume that JUMP_LABEL fields are always valid, they aren't
4748: when compiling without optimization.
4749:
4750: Mon Apr 22 13:56:43 1991 Michael Tiemann (tiemann at cygnus.com)
4751:
4752: * cplus-class.c (prepare_fresh_vtable): Thoroughly update virtual
4753: function tables that come from baseclasses to contain the latest
4754: overrides from derived classes. This was done (in a different way)
4755: for virtual baseclasses, but left undone for non-virtual
4756: baseclasses.
4757: (finish_struct_bits): Use assoc lists instead of class basetype list
4758: to walk through the classes base classes. This gives us more
4759: relavant classes to check against.
4760: * cplus-init.c (init_vfields): New function to recursively walk
4761: objects and make sure their vfields are initialized.
4762: * cplus-init.c (emit_base_init): Call `init_vfields' from top level.
4763:
4764: * cplus-tree.h (TYPE_IDENTIFIER): New macro, gives the
4765: IDENTIFIER_NODE for a given aggr TYPE.
4766: * cplus-class.c (add_method): Use TYPE_IDENTIFIER.
4767: * cplus-cvt.c (various places): Ditto.
4768:
4769: * cplus-class.c (finish_struct): Add TYPE_DECLs to the list of a
4770: class's members that come from the types implicitly declared tags.
4771:
4772: * cplus-decl.c (grokdeclarator): If a function is declared `static
4773: inline', don't give it global visibility, regardless of what #pragma
4774: interface/implementation suggests.
4775:
4776: * cplus-decl.c (finish_function): ??? Questionable change for PIC:
4777: don't let constructors and destructors that manipulate vtables go
4778: inline, since this somehow reduces page sharing. Really???
4779:
4780: * cplus-except.c (init_exception_processing): Use `pushdecl' to
4781: install global info that this function sets up. That way later
4782: decls can override this info (such as with an inline function).
4783:
4784: * cplus-init.c (build_vec_delete): Set TREE_SIDE_EFFECTS of
4785: controller. Otherwise the loop won't execute.
4786:
4787: * cplus-method.c (prepare_inline): Rewritten and simplified.
4788: (do_inline_method_hair): Ditto.
4789:
4790: * cplus-tree.c (lang_output_debug_info): Only output nested type if
4791: we would also output enclosing type.
4792:
4793: * cplus-typekc.c (c_expand_return): Use pseudo for intermediate
4794: return value if necessary. GCC can't read the function return
4795: registers in an inline functino when the return value is being
4796: ignored.
4797:
4798: Mon Apr 22 14:36:01 1991 Jim Wilson (wilson at cygnus.com)
4799:
4800: * sched.c (init_alias_analysis): Handle REG_EQUIV notes just like
4801: REG_EQUAL notes.
4802:
4803: * sched.c (sched_analyze_2): Don't recurse on constant rtx's.
4804: This is necessary so that the cc0_rtx in CONST_DOUBLEs won't be seen.
4805: (sched_analyze): Call sched_analyze_insn for JUMP_INSNS also, so
4806: that cc0 users will get an automatic dependence on their previous
4807: insn.
4808: (launch_links): Ifdef out special treatment of insns which set the
4809: condition codes. This is obsolete, and was SPARC specific anyways.
4810: (new_sometimes_live): Clarify code that aborts if regno is greater
4811: than max_regno.
4812: (schedule_block): If the last insn sets cc0, then it must always
4813: be left in place.
4814: (new_insn_dead_notes): New function. Determines whether a SET or
4815: CLOBBER in an insn created by splitting needs a REG_DEAD or
4816: REG_UNUSED note added.
4817: (update_links): Ignore REG_EQUIV and REG_EQUAL notes on insns that
4818: have more than one set. Generalize flow analysis of the sets in
4819: the new insns so that it can handle new insns which have multiple
4820: sets or new clobbers.
4821:
4822: Mon Apr 22 08:15:50 1991 Michael Meissner (meissner at osf.org)
4823:
4824: * gcc.c (input_suffix): New global var; holds current file's suffix.
4825: (handle_braces): Substitute X in %{.S:X} if the current file has
4826: suffix .S. Similarly, substitute X in %{!.S:X} if the current file
4827: does not have suffix .S.
4828: (validate_switches): Ignore .S part in %{.S:X} construct.
4829:
4830: Sat Apr 20 14:41:17 1991 Micheal Tiemann (tiemann at pogo.gnu.ai.mit.edu)
4831:
4832: * final.c (leaf_function_p): Define this in any event.
4833:
4834: Sat Apr 20 10:45:43 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4835:
4836: * loop.c (check_dbra_loop): Use GET_RTX_CLASS when appropriate.
4837: Check for setting biv with single_set rather than only allowing a SET.
4838: If a loop has a `break', we can't reverse it.
4839:
4840: * cse.c (cse_insn): Fold inside operands of a CALL (mostly to find the
4841: best address form to use).
4842:
4843: * cse.c (simplify_unary_operation): Convert (neg (neg ..)) to NEG.
4844: Similarly for NOT.
4845: (simplify_binary_operation): Simplify things like (-a) + b.
4846: Convert UDIV with divisor a constant power of two into LSHIFTRT.
4847: Similarly for UMOD.
4848: Only fold shifts of a zero by a value into zero if the value has
4849: no side effects.
4850: Remove code to handle negative shift counts.
4851:
4852: * tm-a29k.h (OPTIMIZATION_OPTIONS): Allow insn scheduling to be
4853: enabled, now that it works for the 29k.
4854:
4855: * tm-rs6000.h (LINK_SPEC): Add "-bhalt:4" to LINK_SPEC (don't ask!).
4856:
4857: Fri Apr 19 13:18:52 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4858:
4859: * explow.c (memory_address): Test `cse_not_expected' instead of
4860: `optimize' so that we don't make new pseudos after flow is run.
4861:
4862: * genflags.c (gen_insn): If extra condition is more than one line,
4863: use \'s to make proper multi-line macro definition.
4864:
4865: Thu Apr 18 13:40:01 1991 Jim Wilson (wilson at cygnus.com)
4866:
4867: * loop.c (check_dbra_loop): Reenable no_use_except_for_counting code
4868: which was mistakenly ifdefed out as buggy. The actual bug was in
4869: strength_reduce, and has already been fixed.
4870:
4871: Thu Apr 18 09:47:25 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4872:
4873: * loop.c (record_giv): Allow for the case where regno_last_uid
4874: of DEST_REG has been moved or deleted.
4875:
4876: * rtlanal.c (replace_regs): Add missing argument in recursive call.
4877:
4878: * recog.c (nonmemory_operand): Only call general_operand for
4879: a SUBREG if it is a MEM, just like register_operand.
4880:
4881: * local-alloc.c (block_alloc): Handle case where the last insn of
4882: a REG_NO_CONFLICT block requires some CLOBBERs, but is a single SET.
4883:
4884: * out-romp.c, out-rs6000.c (next_insn_tests_no_unsigned): If a
4885: REG_UNUSED note for (cc0) is present on INSN, return 1.
4886:
4887: * jump.c (delete_jump): If the previous insn sets cc0 but we can't
4888: delete it for some reason, add a REG_UNUSED note for cc0 in that insn.
4889:
4890: * out-a29k.c: Rename input_operand to in_operand and output_operand
4891: to out_operand to avoid conflict with output_operand in final.c.
4892: * a29k.md: Likewise.
4893: (call patterns): Don't put SYMBOL_REF in MEM for recursive call;
4894: it might not be recursive if inlined; let cse do it later.
4895: * tm-a29k.h (RTX_COST, ADDRESS_COST): All addresses have the same
4896: cost, but MEM is expensive.
4897:
4898: Tue Apr 16 16:01:47 1991 Michael Meissner (meissner at osf.org)
4899:
4900: * configure: Add osfrose, osf, and mips/dec-osfrose.
4901:
4902: * out-mips.c (toplevel): Include necessary include files so
4903: out-mips.c can be compiled separately.
4904: (g_switch_value): New variable to hold -G xx value.
4905: (g_switch_set): New variable to indicate if -G xx used.
4906: (current_function_file): New variable to hold last .file.
4907: (file_in_function_warning): New variable to hold if we've warned the
4908: user that ECOFF can't switch files within a function.
4909: (mips_rtx_classify): New array to classify an insn.
4910: (mips_reg_names): New array to hold the register names.
4911: REGISTER_NAMES initializes all elements to point into here, and
4912: override_options resets the names if -mrnames is used.
4913: (mips_sw_reg_names): New array to hold the alternate register names.
4914: (mips_regno_to_class): New array to map hard register number to
4915: register class.
4916: (uns_arith_operand): Rewrite so call to register_operand is done
4917: last, not first.
4918: (arith_operand): ditto.
4919: (arith32_operand): ditto.
4920: (large_int): New function to return true if int constant will take 2
4921: instructions to load into a register.
4922: (reg_or_0_operand): New function to return true if a register or
4923: constant 0 is the operand for use in store patterns.
4924: (md_register_operand): New function to return true if either the hi
4925: or lo register is used.
4926: (mips_const_double_ok): New function to return true if a
4927: CONST_DOUBLE can be used as a constant in a RTL expression. At
4928: present, only DImode constants and 0.0 is allowed.
4929: (simple_memory_operand): New function to return true if a memory
4930: reference is a simple register + small offset.
4931: (gp_memory_operand): New function to return true if a memory
4932: reference uses the global pointer.
4933: (mips_move_instructions): New function to handle all data movement
4934: of one word or less.
4935: (mips_move_2words_instructions): New function to handle all data
4936: movement of two words.
4937: (init_cumulative_args): Remove print_tree debug call.
4938: (function_arg_partial_nregs): Fix bug in passing structures where
4939: the wrong field was used.
4940: (print_options): Enable this function, body was in #if 0.
4941: (override_options): Spell function name with two r's. Change how
4942: the -G xx and -mGx options are handled. If neither passed use the
4943: appropriate default. If -mgas make sure debug format is DBX, and if
4944: not -mgas, use SDB debug format. If -mrnames and -mgas, give an
4945: error message, otherwise set up mips_reg_names. Set up the
4946: mips_rtx_classify array.
4947: (print_options): New function instead of a long macro. Add %C to
4948: print part of the opcode for a branch condition, %N to print the
4949: inverted branch condition, %( to do .set noreorder, %) to do .set
4950: reorder, %[ to do .set noat, %] to do .set at, %& to do .set
4951: noreorder if filling delay slots, and %# to print nop if delay slot
4952: not filled.
4953: (print_operand_address): New function instead of a long macro.
4954: (compute_frame_size): New function to abstract all the frame related
4955: information like frame size, saved registers, etc.
4956: (save_restore): Common function between the prologue and epilogue to
4957: save/restore the registers in the proper order. Make $31 saved at
4958: function pc +4.
4959: (function_prologue): Call compute_frame_size and save_restore. Make
4960: sure the appropriate .file is done before any statement in the
4961: prologue since the MIPS ECOFF requires this.
4962: (function_epilogue): Call compute_frame_size and save_restore.
4963:
4964: * tm-decstatn.h (CPP_PREDEFINES): Define the appropriate macros.
4965: (*_SPEC): Move the DECstation related specs here from tm-mips.h.
4966:
4967: * tm-decrose.h (new file): File to support OSF/1 with OSF/rose
4968: object format.
4969:
4970: * tm-mips-sysv.h (CPP_PREDEFINES): Define the appropriate macros.
4971: (*_SPEC): Move the DECstation related specs here from tm-mips.h.
4972:
4973: * tm-mips-bsd.h (CPP_PREDEFINES): Define the appropriate macros.
4974: (*_SPEC): Move the DECstation related specs here from tm-mips.h.
4975:
4976: * tm-mips-news.h (CPP_PREDEFINES): Define the appropriate macros.
4977: (*_SPEC): Move the DECstation related specs here from tm-mips.h.
4978:
4979: * tm-iris.h (CPP_PREDEFINES): Define the appropriate macros.
4980: (*_SPEC): Move the DECstation related specs here from tm-mips.h.
4981: (SET_FILE_NUMBER): Define, so that .file number is always 1.
4982: (LABEL_AFTER_LOC): Define, so that a label appears after .loc.
4983: (STACK_ARGS_ADJUST): Iris frames require 32 bytes at the top of the
4984: call frame instead of the normal MIPS 16.
4985:
4986: * mips.md (all): Add first cut at attributes to identify insn type.
4987: (all): Where appropriate, use @ form for alternates, instead of
4988: using C code.
4989: (define_delay): Put arithmetic and one word stores in call, jump,
4990: branch delay slots.
4991: (define_function_unit): Add functional unit definitions for memory
4992: and integer multiply/divide.
4993: (anonymous add/subtract insn): Remove support for reg + large offset
4994: that omitting the frame pointer caused in 1.xx to see if it is
4995: needed anymore.
4996: (mulsi3): Add clobbers for the hi/lo registers. Add a define_split
4997: and an anonymous define_insn to separate the mult instruction from
4998: the mflo.
4999: (divmodsi4): Add clobbers for the hi/lo registers.
5000: (udivmodsi4): Add clobbers for the hi/lo registers.
5001: (divsi3): Add clobbers for the hi/lo registers. Restrict divides
5002: and modulus to register / register.
5003: (modsi3): ditto.
5004: (udivsi3): ditto.
5005: (ymodsi3): ditto.
5006: (divide peepholes): Add two peepholes to catch divide followed by
5007: modulus of the same values.
5008: (anddi3): Remove pattern, use default behavior.
5009: (iordi3): Remove pattern, use default behavior.
5010: (xordi3): Remove pattern, use default behavior.
5011: (truncsiqi2): Remove pattern, use default behavior.
5012: (truncsihi2): Remove pattern, use default behavior.
5013: (trunchiqi2): Remove pattern, use default behavior.
5014: (truncdfsf2): Remove asm comment.
5015: (extendhisi2): Add a define_split for shift case.
5016: (extendqisi2): Add a define_split for shift case.
5017: (extendqihi2): Add a define_split for shift case.
5018: (movdi): Turn into a define_expand to guarantee that memory <->
5019: memory moves go through a register.
5020: (movsi): ditto.
5021: (movhi): ditto.
5022: (movqi): ditto.
5023: (movsf): ditto.
5024: (movdf): ditto.
5025: (movdi_internal): new define_insn. Add fp registers to the
5026: alternatives. Call mips_move_2words_instructions to do the actual
5027: movement. Require memory addresses to be offsetable.
5028: (movdf_internal): ditto.
5029: (movsi_internal): new define_insn. Add storing 0 to memory
5030: directly using $0. Add transfer to/from multiply/divide registers,
5031: and to the fp status register. Call mips_move_instructions to do
5032: the actual work.
5033: (movhi_internal): ditto.
5034: (movqi_internal): ditto.
5035: (movsf_internal): ditto.
5036: (jump): Add %& to turn on .set noreorder if filling delay slot.
5037: (tablejump): Ditto.
5038: (call): Ditto.
5039: (call_value): Ditto.
5040: (indirect_jump): New required pattern, add %& for delay slot.
5041: (nop): Use %( %) to turn on/off .set noreorder.
5042: (probe): Use %[ %] to turn on/off .set noat.
5043:
5044: * tm-mips.h (abort): Define abort to be fancy_abort for now.
5045: (toplevel): Move all extern's to the start of the file, rather than
5046: scattered throughout.
5047: (OPTIMIZATION_OPTIONS): New macro, -O sets -fomit-frame-pointer, and
5048: -fdelayed-branch. -O2 sets -fstrength-reduce, -fcse-follow-jumps,
5049: -fexpensive-optimizations, -fthread-jumps, -frerun-cse-after-loop.
5050: -O3 sets -finline-functions.
5051: (*_SPEC): Move most of the target specific spec's to the appropriate
5052: file, rather than defining them in tm-mips.h. Defaults are for MIPS
5053: RISC-OS with default system.
5054: (CPP_SPEC): If preprocessing .S files, define LANGUAGE_ASSEMBLY
5055: instead of LANGUAGE_C.
5056: (MIPS_VERSION): Add meissner version number.
5057: (MIPS_DEBUGGING_INFO): Define this for the future.
5058: (TARGET_*): reorder which bit means what. Add bits so we can tell
5059: whether any of the -mG[012] options were used. Redefine some debug
5060: switches.
5061: (BYTES_BIG_ENDIAN): Always define to 0/1 now.
5062: (WORDS_BIG_ENDIAN): Always define to 0/1 now.
5063: (MAX_PARM_BOUNDARY): Delete, since it's no longer used.
5064: (BIGGEST_FIELD_ALIGNMENT): Define to be 64.
5065: (CONSTANT_ALIGNMENT): New macro, make sure strings are aligned.
5066: (DATA_ALIGNMENT): New macro, make sure byte arrays are aligned.
5067: (FIRST_PSEUDO_REGISTER): Bump to 67, add hi, lo, fcr31.
5068: (FIXED_REGISTERS): Add initializations for hi, lo, and fcr31.
5069: (CALL_USED_REGISTERS): Add initializations for hi, lo, and fcr31.
5070: (MD_REG_P): New macro to return if hi/lo register.
5071: (ST_REG_P): New macro to return if fp control register.
5072: (HARD_REGNO_NREGS): Return 4 for single precision complex.
5073: (MODES_TIEABLE_P): Add complex float type support.
5074: (FRAME_POINTER_REQUIRED): Make this always 0.
5075: (NO_RECURSIVE_FUNCTION_CSE): New macro, define as 1.
5076: (enum reg_class): Add class for the hi register, lo register, either
5077: hi or lo registers, status registers.
5078: (REG_CLASS_NAMES): Support new register classes.
5079: (REG_CLASS_CONTENTS): ditto.
5080: (REG_CLASS_FROM_LETTER): ditto.
5081: (REGNO_REG_CLASS): Use an array to map register # -> class.
5082: (CONST_OK_FOR_LETTER_P): Add `L' for constants which have bottom 16
5083: bits all zero, and `M' which require two instructions to load.
5084: (CONST_DOUBLE_OK_FOR_LETTER_P): Use `CONST_DOUBLE_HIGH' and
5085: `CONST_DOUBLE_LOW'.
5086: (EXTRA_CONSTRAINT): New macro, `Q' for gp memory references, and `R'
5087: for reg + small offset references.
5088: (struct mips_frame_info): New structure to hold all frame related
5089: information, calculated by compute_frame_size.
5090: (INITIAL_FRAME_POINTER_OFFSET): New macro, use compute_frame_size to
5091: calculate where the frame should go.
5092: (ACCUMULATE_OUTGOING_ARGS): New macro, define so stack pushes are
5093: folded into the frame.
5094: (REG_PARM_STACK_SPACE): Redefine to take an argument and return 16.
5095: (OUTGOING_REG_PARM_STACK_SPACE): New macro, define to say we must
5096: allocate stack space for arguments passed in registers.
5097: (TARGET_FLOAT_FORMAT): New macro, define as IEEE_FLOAT_FORMAT.
5098: (FUNCTION_ARG_BOUNDARY): New macro to determine argument padding
5099: requirements.
5100: (MIPS_STACK_ALIGN): New name for AL_ADJUST_ALIGN macro.
5101: (FIX_FRAME_POINTER_ADDRESS): Delete, no longer used.
5102: (FUNCTION_PROFILER): No longer have to switch between different
5103: register names, override_options now sets up reg_names correctly.
5104: (TRAMPOLINE_TEMPLATE): New macro, define as a dummy.
5105: (TRAMPOLINE_SIZE): ditto.
5106: (INITIALIZE_TRAMPOLINE): ditto.
5107: (INDIRECTABLE_ADDRESS): Delete, fold into GO_IF_LEGITIMATE_ADDRESS.
5108: (GO_IF_LEGITIMATE_ADDRESS): If -mdebuga, don't allow <label>(<reg>)
5109: type addresses, which the machine really doesn't support, but you
5110: currently get better code in some instances by pretending it does
5111: support it.
5112: (LEGITIMATE_CONSTANT_P): Call mips_const_double_ok if CONST_DOUBLE.
5113: (ENCODE_SEGMENT_INFO): New macro, set SYMBOL_REF_FLAG (ie, volatil)
5114: if refering to an item via the gp pointer.
5115: (SLOW_BYTE_ACCESS): Define to 1, it is supposed to generate better
5116: code on RISC machines.
5117: (classify_op): New macro to classify an insn.
5118: (additive_op): Use classify_op to figure out if PLUS or MINUS.
5119: (divmod_op): New macro to identify DIV, MOD, UDIV, UMOD insns.
5120: (unsigned_op): New macro to identify UDIV, UMOD insns.
5121: (REGISTER_NAMES): All names are now pointers into mips_reg_names, so
5122: that we don't have to continually test whether -mrnames is used or
5123: not. The override_options function sets this up appropriately.
5124: (REGISTER_NUMCHAR): Deleted.
5125: (REG_NAME): Deleted.
5126: (ADDITIONAL_REGISTER_NAMES): Define both names for the gp registers,
5127: so people can use either $r4 or a0 in asm statements.
5128: (PRINT_OPERAND): Call print_operand function instead of expanding a
5129: huge macro. Add %C, %N, %(, %), %[, %], %&, %#.
5130: (PRINT_OPERAND_PUNCT_VALID_P): Add `(', `)', `[', `]', `&', and `#'.
5131: (PRINT_OPERAND_ADDRESS): Call print_operand_address function instead
5132: of expanding a huge macro.
5133: (DBX_OUTPUT_SEQEND): New macro, emit .set reorder after filling
5134: delay slot(s).
5135: (ASM_OUTPUT_SOURCE_FILENAME): Add check for doing .file of same file
5136: -- this is needed for the prologue to do a .file before all prologue
5137: instructions, rather than after the instructions which set up the
5138: stack. Also, warn about #line requests that cannot be honored in
5139: MIPS ECOFF binaries.
5140: (ASM_OUTPUT_CASE_END): Delete, since it was only used to go back to
5141: the text section, and GCC does this now automatically.
5142: (READONLY_DATA_SECTION): New macro, define to be rdata_section.
5143: (SELECT_SECTION): Don't force volatile readonly items into .data.
5144: (ASM_COMMENT_START): New macro, define to be '\t\t# ' for -dp.
5145: (SEPARATE_AUX_OUTPUT): New macro, define this to separately compile
5146: out-mips.c.
5147:
5148: Tue Apr 16 15:00:51 1991 Jim Wilson (wilson at cygnus.com)
5149:
5150: * unroll.c (final_giv_value): Use expand_binop instead of
5151: gen_sub2_insn when emitting subtract insns, since expand_binop
5152: will work for any operands.
5153:
5154: * sched.c (schedule_insns): Don't split no-op moves; doing so
5155: breaks the code that handles REG_NO_CONFLICT blocks.
5156: (update_links): Delete the code that prints a warning for
5157: REG_EQUAL notes where the original dest can't be found. This no
5158: longer occurs because of the above change.
5159:
5160: * sched.c: Generalize memory aliasing code so that it will work on
5161: non-RISC machines. Instead of saving just the insn on the pending
5162: lists, now saves both the insn and the mem rtx. Old variables
5163: pending_read and pending_write replaced with pending_read_insns,
5164: pending_read_mems, pending_write_insns, and pending_write_mems.
5165: (read_dependence, true_dependence, anti_dependence,
5166: output_dependence): Now passed a MEM rtx instead of a PATtern.
5167: (add_insn_mem_dependence): New function. Adds an insn and a mem
5168: to a pending list pair.
5169: (sched_analyze_1, sched_analyze_2, sched_analyze): Modified to use
5170: new pending list scheme.
5171: (schedule_block): Likewise.
5172: (schedule_insns): Likewise.
5173:
5174: Tue Apr 16 12:31:07 1991 Jeffrey A. Law (law at mole.gnu.ai.mit.edu)
5175:
5176: * Makefile.in (install-man): Look for protoize.1 and unprotoize.1
5177: in the current directory, not $(srcdir)
5178: (install-headers): Use basename to strip off $(srcdir) from
5179: include files when installing and changing mode.
5180:
5181: Tue Apr 16 08:10:38 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5182:
5183: * rs6000.md (extendqixi2): Add CLOBBER to the first SET as well as
5184: the second.
5185: (load_multiple): Fix typo in operand number and add newline.
5186:
5187: * reload.c (find_reloads_address_1): Pass actual location of a
5188: MEM used in an address; also handle the case when the MEM was
5189: copied. Ensure we reload the copy, not the original address.
5190:
5191: * reload1.c (eliminate_regs, case {INSN,EXPR}_LIST): Correctly handle
5192: the cases when one or more operations is (nil).
5193:
5194: * local-alloc.c (block_alloc): Check for REG_EQUAL on list insn
5195: of REG_NO_CLOBBER sequence, not first.
5196: (no_conflict_p): Set LAST and use INSN instead of P for loop start.
5197:
5198: Mon Apr 15 12:55:12 1991 Jim Wilson (wilson at cygnus.com)
5199:
5200: * loop.c (strength_reduce): Don't emit an insn after loop_end to
5201: set the final value of a reversed biv. There is already an insn
5202: there setting the biv's proper final value.
5203:
5204: Sun Apr 14 18:32:05 1991 Michael Tiemann (tiemann at cygnus.com)
5205:
5206: * gnulib1.c (various functions): Added declaration of INTIFY to
5207: every function which has a FLOAT_ARG_TYPE argument or return value.
5208:
5209: Sun Apr 14 18:31:59 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5210:
5211: * c-decl.c (store_parm_decls): Traditional float parm becomes double.
5212:
5213: Sat Apr 13 17:35:07 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5214:
5215: * m68k.md (storing 32-bit field with movl): Allow any immediate arg 3.
5216:
5217: * expmed.c (store_bit_field): For fields bigger than a word:
5218: Avoid special use of SImode, and don't crash if VALUE is CONST_INT.
5219:
5220: Fri Apr 12 02:04:46 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5221:
5222: * reload.c (find_reloads): Like prev change here, for optional reloads.
5223:
5224: * tm-sparc.h (FUNCTION_BLOCK_PROFILER): Must set %o0 to the address
5225: LPBX0 by adding in the low part of the address before calling
5226: ___bb_init_func.
5227:
5228: * tm-next.h (ASM_OUTPUT_CONSTRUCTOR, ASM_OUTPUT_DESTRUCTOR):
5229: New macros. Place reference to constructor or destructor into
5230: constructor or destructor section.
5231:
5232: * tm-next.h (EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS): Add
5233: new constructor and destructor sections.
5234:
5235: * jump.c (squeeze_block_notes,squeeze_notes): Chage the name of
5236: squeeze_block_notes to squeeze_notes. Also handle LOOP_BEG, LOOP_CONT
5237: and LOOP_END notes, since these must remain in their original order.
5238:
5239: * cccp.c (skip_to_end_of_comment): Handle warn_comment.
5240:
5241: * m68k.md (dbra patterns): Use `=' in constraint of op 0.
5242:
5243: * gcc.c (process_command): Handle -save-temps.
5244: (do_spec_1): Handle %g like %b if -save-temps.
5245: (verbose_flag): Renamed from `vflag'.
5246:
5247: * tm-sparc.h (FIXUNS_TRUNC_LIKE_FIX_TRUNC): Don't define this.
5248:
5249: Fri Apr 12 00:57:48 1991 Jim Wilson (wilson at cygnus.com)
5250:
5251: * sched.c: Update all comments to reflect source changes.
5252: Make old_live_regs a static global, instead of local to schedule_block.
5253: Schedule_block is now void, since its return value was always 1.
5254: Rename last_function_call_not_const to last_pending_memory flush.
5255: This can not be a CALL_INSN or a INSN that writes memory.
5256: New variable pending_lists_length so that the lists can be flushed
5257: when they get too long.
5258: Use GET_RTX_CLASS instead of multiple GET_CODE calls whenever it
5259: makes sense.
5260: (read_dependence): New Function. Returns one if two reads are
5261: dependent. This can happen if both are volatile reads.
5262: (true_dependence, anti_dependence, output_dependence): Two volatile
5263: memory access are always dependent.
5264: (order_calls): Function deleted. It was very short, it was only called
5265: once, and it no longer did what its name implied. Its one call was
5266: replaced with the body of the function.
5267: (sched_analyze_1): Correctly handle stripping of SUBREGs, etc from
5268: the set dest.
5269: If the pending lists are longer than 32 when processing a memory
5270: write, then make this write depend on all previous and all future
5271: memory accesses so we can flush the pending list. This is necessary
5272: because the algorithms used are O(N*N).
5273: (sched_analyze_2): For memory reads, check whether it is read
5274: dependent on any previous memory read (this can happen if both reads
5275: are volatile).
5276: (sched_analyze_insn): Replace call to order_calls with the body of
5277: that function.
5278: (sched_analyze): Don't clear last_memory_pending_flush for a non-const
5279: call, since any future call must still depend on all previous memory
5280: accesses.
5281: (sched_note_set): Correct handling of SUBREGs, etc. For partial sets
5282: of a register, must treat this exactly the same way as flow.c, i.e.
5283: a partial set of a register does not kill the register. Delete
5284: ifdefed out code which is obsolete.
5285: (attach_deaths): New argument SET_P, which indicates whether this is
5286: a set (if true) or a use (if false) of the rtx X. Correct handling
5287: of REG_DEAD notes, to account for the new REG_UNUSED note.
5288: (attach_deaths_insn): Pass new additional parameter to attach_deaths.
5289: Always call attach_deaths for sets within a parallel. Call
5290: attach_deaths for clobbers.
5291: (new_sometimes_live): Ifdef out code which should never be executed,
5292: and replaced with call to abort.
5293: (schedule_block): Now void.
5294: When processing block to find dead_regs, don't unlink REG_UNUSED notes,
5295: but must mark the indicated register as dead.
5296: (update_links): Completely rewritten to make more general. Now handles
5297: all REG_NOTEs except REG_INC and REG_LABEL. No longer makes simple
5298: assumptions about the form of instructions. New argument orig_insn,
5299: which is the original unsplit insn.
5300: (schedule_insns): Delete unused volatilep code. Pass new parameter
5301: to update_links.
5302:
5303: Thu Apr 11 15:34:44 1991 Tom Wood (wood at dg-rtp.dg.com)
5304:
5305: * out-m88k.c (pic_addressing_base_rtx): Use pic_offset_table_rtx
5306: instead. Otherwise, PIC fails miserably for inline functions.
5307: (legitimize_address): Support -mbig-pic.
5308: (print_operand): Add `g' for printing #got_rel (for -mbig-pic).
5309: * tm-m88k.h (CONDITIONAL_REGISTER_USAGE): PIC_OFFSET_TABLE_REGNUM
5310: is used and is fixed for PIC.
5311: (GO_IF_LEGITIMATE_ADDRESS): Distinguish the -mbig-pic case.
5312: * m88k.md (SImode hi16/lo16): Use %g for -mbig-pic.
5313:
5314: Wed Apr 10 21:53:32 1991 Jim Wilson (wilson at cygnus.com)
5315:
5316: * unroll.c: Change global variable declarations to static.
5317: Four new global variables loop_iteration_var, loop_initial_value,
5318: loop_increment, and loop_final_value, used for communication between
5319: loop_iterations and precondition_loop_p.
5320: (unroll_loop): Before deleteing the insns in the original loop body,
5321: emit a label after the last insn to be deleted, to ensure that no
5322: delete_insn call will delete past that point.
5323: (precondition_loop_p): Use global loop_* variables setup by
5324: loop_iterations, instead of trying to calculate their values again.
5325: (copy_loop_body): Don't emit copies of the start_label.
5326: (approx_final_value): COMPARISON argument now passed as the pair
5327: COMPARISON_CODE and COMPARISON_VALUE.
5328: (find_splittable_regs): When completely unrolling a loop, and the
5329: initial value of a biv is a hard register or itself, then must
5330: create a new register to hold its initial value for splitting.
5331: (loop_iterations): Set the new global variables loop_*.
5332: If the comparison value is an invariant register, then search the insns
5333: before the loop to try to find a constant value for the register.
5334:
5335: Wed Apr 10 16:02:16 1991 Tom Wood (wood at dg-rtp.dg.com)
5336:
5337: * out-m88k.c (pic_addressing_base_rtx): A pseudo register coined
5338: for each function as needed in legitimize_address.
5339: (emit_move_sequence): Use legitimize_address instead of generating
5340: HIGH/LO_SUM.
5341: (legitimize_address): Rework, based on the sparc version, to
5342: implement PIC.
5343: (output_call): Use the #plt form when doing PIC.
5344: (m88k_layout_frame): The addressing base register is no longer
5345: fixed and r1 need not be saved for PIC.
5346: (output_prologue): Output instructions to setup the addressing
5347: base register if one is needed.
5348: (print_operand_address): Support the PIC case.
5349: * m88k.md (most patterns using hi16/lo16): Disable these for PIC.
5350: * tm-m88k.h (CONDITIONAL_REGISTER_USAGE): No longer needed.
5351: (ADDRESSING_BASE_REGNUM): Derived from pic_addressing_base_rtx.
5352: (GO_IF_LEGITIMATE_ADDRESS): Accept the PIC case.
5353: (LEGITIMIZE_ADDRESS): Use legitimize_address instead of HIGH/LO_SUM.
5354:
5355: * make-m88k, make-m88kdgux: Use SysV INSTALL = cp and for DG/UX,
5356: use the bison -l option to allow debugging in c-parse.tab.c.
5357:
5358: * From [email protected].
5359: * out-m88k.c: Include insn-config.h before conditions.h, which
5360: requires it.
5361: * xm-m88kdgux.h: Define SEPARATE_AUX_OUTPUT before including config.h.
5362: * tm-m88k.h: Declare MD functions only if SEPARATE_AUX_OUTPUT.
5363:
5364: * tm-m88k.h, tm-m88kdgux.h, tm-m88ksvr4.h: Rework TARGET_VERSION.
5365:
5366: Wed Apr 10 08:19:02 1991 Richard Stallman (rms at apple-gunkies)
5367:
5368: * caller-save.c (emit_mult_restore): Typo testing offset[regno] sign.
5369:
5370: * fold-const.c (target_isinf): Test real value for infinitude.
5371: * real.h (REAL_VALUE_ISINF): Use target_isinf.
5372:
5373: * configure: Change / to -- in value of `target' in Makefile.
5374:
5375: Tue Apr 9 20:09:49 1991 James Van Artsdalen (james at bigtex.cactus.org)
5376:
5377: * configure: Modify assignment to `target' in Makefile.
5378: (AIX target): Use correct config files.
5379:
5380: * make-aix386: New file.
5381:
5382: Tue Apr 9 19:28:16 1991 Torbjorn Granlund (tege at zevs.sics.se)
5383:
5384: * longlong.h (header):
5385: Modify definition of count_leading_zeros for input = 0.
5386: * (68020): Test for __NeXT__ too.
5387: * (68020 __umulsidi3, umul_ppmm, udiv_qrnnd):
5388: Use constraints "dmi", not "g" (avoid address registers).
5389: * (88000 add_ssaaa, sub_ddmmss): Use r modifier for output
5390: templates, use J, not I, as constraint for the carry-in insns
5391: * (at the end of the file): If UDIV_NEEDS_NORMALIZATION is not
5392: defined, define it as 0.
5393:
5394: Tue Apr 9 19:14:34 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5395:
5396: * function.c (optimize_bit_field): Fix typo.
5397:
5398: * cccp.c (do_define): Don't crash when a builtin macro is
5399: redefined.
5400:
5401: Tue Apr 9 15:11:42 1991 Richard Stallman (rms at apple-gunkies)
5402:
5403: * expr.c (move_by_pieces): Don't fail to compile if no movqi.
5404:
5405: * emit-rtl.c (get_last_insn_anywhere): Use first nonempty seq.
5406:
5407: * varasm.c (assemble_constructor): Fix typo.
5408:
5409: Fri Apr 5 22:15:57 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5410:
5411: * rs6000.md (extendqixi): Add CLOBBER to ASHIFTRT insn.
5412:
5413: * combine.c (simplify_shift_const): Shift operand of PLUS using
5414: correct mode.
5415: Correctly simplify outer_const when done.
5416:
5417: * reload.c (push_reload): Don't de-reference INLOC if it is 0.
5418:
5419: * expr.c (convert_to_mode): Call protect_from_queue.
5420:
5421: Fri Apr 5 13:29:55 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5422:
5423: * varasm.c (ASM_OUTPUT_CONSTRUCTOR, ASM_OUTPUT_DESTRUCTOR):
5424: Accept two arguments.
5425:
5426: Fri Apr 5 08:45:18 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5427:
5428: * expmed.c (expand_divmod): Convert OP1 to COMPUTE_MODE when we
5429: convert OP0.
5430:
5431: * combine.c (subst): Use gen_binary.
5432: (simplify_comparison): If we have a ZERO_EXTRACT from a constant
5433: with only one bit set, convert into comparison of position with
5434: location of bit in constant; this simplifies ((1 << x) & 1) == 0.
5435:
5436: * combine.c (gen_lowpart_for_combine): Copy code for CONST_DOUBLE
5437: from gen_lowpart instead of calling it; it will abort for certain
5438: floating-point cases, while we will just surround the object with
5439: a SUBREG.
5440:
5441: Thu Apr 4 22:31:36 1991 Jim Wilson (wilson at cygnus.com)
5442:
5443: * unroll.c (new file): Implements loop unrolling. Completely
5444: unrolls small constant bounded loops. Unrolls other constant
5445: bounded loops by an amount modulo the number of iterations so that
5446: only one exit test is needed. Preconditions loops whose iteration
5447: count can be calculated at run time, so that only one exit test
5448: is needed. Can also unroll any other loop by having multiple
5449: copies of the exit tests. Tries to simplify addresses while
5450: unrolling.
5451:
5452: * tree.def: BLOCK trees have 4 fields, not 5.
5453:
5454: * toplev.c: Add new flag -dt to dump RTL after the second cse pass.
5455: Define two new flags, flag_unroll_loops and flag_unroll_all_loops,
5456: and add code to support their use for loop unrolling. Print the
5457: exec time for the shorten-branch pass in the proper place, i.e.
5458: after delayed branch reorganization.
5459:
5460: * stmt.c (find_loop_tree_blocks): New function. Creates a mapping
5461: between BLOCK trees and loops. This info is needed when doing both
5462: loop unrolling and outputting debugger info.
5463: (unroll_block_trees): New function. Makes COPIES copies of the block
5464: trees corresponding the loop indicated by LOOP_NUMBER, so that the
5465: BLOCK notes inside the loop will still match the BLOCK trees for
5466: the loop.
5467:
5468: * rtl.h: Document the new named pattern
5469: "decrement_and_branch_until_zero". Add macros to access new
5470: field of inline_header rtx, which holds a pointer to the function's
5471: original DECL_INITIAL tree.
5472:
5473: * rtl.def: New entry for inline_header to hold a pointer to the
5474: function's original DECL_INITIAL tree.
5475:
5476: * loop.h (new file): Move many declarations from loop.c to the new
5477: file loop.h, and change some from static to extern, so that they
5478: can be shared with unroll.c. Also globalize names for variables
5479: changed from static to extern.
5480:
5481: * loop.c: Move many declarations from loop.c to the new file loop.h,
5482: and change some from static to extern, so that they can be shared
5483: with unroll.c. Add misc comments to better explain the code.
5484: Change name of global arrays loop_start and loop_end to
5485: loop_number_loop_starts and loop_number_loop_ends so that they won't
5486: be confused with local loop_start and loop_end variables.
5487: New variables loop_number_exit_labels, loop_number_first_block,
5488: loop_number_last_block, loop_number_block_level, loop_n_iterations.
5489: Old_max_reg renamed to max_reg_before_loop. Max_uid renamed to
5490: max_uid_for_loop. Induct_var renamed to reg_iv_type.
5491: Induct_struct renamed to reg_iv_info. Class_struct renamed to
5492: reg_biv_class. Iv_list renamed to loop_iv_list.
5493: Rename (struct induction) field always to always_computable.
5494: Rename (struct induction) field family to next_iv.
5495: New (struct induction) field not_replaceable.
5496: (loop_opt): Add code to allocate some new arrays for unrolling
5497: support. Add call to find_loop_tree_blocks to create the BLOCK tree
5498: to loop map needed when unrolling and outputting debugger info.
5499: (scan_loop): Fix setting of maybe_never of label/jump. The old code
5500: always failed.
5501: (prescan_loop): Delete obsolete code.
5502: (find_and_verify_loops): Add code to initialize
5503: loop_number_exit_labels.
5504: (mark_loop_jump): Add code for keep chain of loop_number_exit_labels
5505: for each loop.
5506: (invariant_p): LABEL_REFs are not invariant when doing loop unrolling.
5507: Remove static from definition, so that it can be called from unroll.c.
5508: (strength_reduce): Change name of variable maybe_never to
5509: not_every_iteration, to help emphasize that it is not the same
5510: as the variable maybe_never in the code motion code. Modify code
5511: that computes its value so that it will be false more often, resulting
5512: in better code.
5513: (strength_reduce): Added code to call the new loop unrolling
5514: functions, e.g. unroll_loop, loop_iterations, etc.
5515: (strength_reduce): New code to handle biv's and giv's which must
5516: be set to their final_value after the loop exits.
5517: (strength_reduce): Reversed giv's and biv's must have their values
5518: calculated differently. Add new field reversed to struct induction,
5519: and code to check and use its value.
5520: (strength_reduce): Only check value of bl->nonneg for architectures
5521: that have a decrement_and_branch_until_zero instruction.
5522: (find_mem_givs): New argument loop_start.
5523: (record_giv): New argument loop_start.
5524: The always_computable field for DEST_ADDR givs is always set true.
5525: New code to check for case of spaghetti code, in which case the
5526: giv can never be considered replaceable.
5527: (check_final_value): New function. For givs which are not otherwise
5528: replaceable, try to calculate their final value, and then try
5529: to use this to make them replaceable.
5530: (update_giv_derive): Skip inner loop if giv is known to be underivable
5531: at the beginning. Must set cant_derive if we pass an insn that
5532: modifies the giv's biv, and we can't calculate an adjustment.
5533: (emit_iv_add_mult): Remove static definition so that it is callable
5534: from unroll.c.
5535: (check_dbra_loop): Reversed biv's must be marked as such, so that
5536: they can be treated specially in the rest of loop.c.
5537: (final_biv_value): Moved to unroll.c, alongside the new function
5538: final_giv_value. Extensively rewritten to work for most common
5539: cases.
5540: (update_reg_last_use): Verify that insns have a valid luid before
5541: trying to use it. Don't perform any action if no value luid.
5542: (get_condition): Correct initial comment.
5543: (get_condition_for_loop): Remove static definition so it is callable
5544: from unroll.c.
5545:
5546: * integrate.h: Replace `tree' use in definition with
5547: `union tree_node *' so that tree.h does not have to be included when
5548: this file is included.
5549:
5550: * integrate.c (initialize_for_inline): Pass additional argument,
5551: the DECL_INITIAL (fndecl) tree, to gen_inline_header_rtx. Update
5552: and correct comment.
5553: (save_for_inline_copying): Copy the decl tree, so that virtual reg
5554: instantiation, and loop unrolling, won't affect the saved tree.
5555: (copy_decl_tree): New argument, functionbody, which distinguished
5556: between calls from save_for_inline_copying and calls from
5557: expand_inline_function.
5558: (copy_rtx_and_substitute): Return orig instead of aborting when
5559: inline_target is zero so that loop unrolling can use this code.
5560:
5561: * gcc.texinfo: Document the new optimization flags -funroll-loops
5562: and -funroll-all-loops, the new dump option -dt, and the new named
5563: pattern "decrement_and_branch_until_zero".
5564:
5565: * flags.h: Define two new flags, flag_unroll_loops and
5566: flag_unroll_all_loops.
5567:
5568: * emit-rtl.c (gen_inline_header_rtx): New argument
5569: original_decl_initial. Pass to gen_rtx call.
5570:
5571: * alliant.md, m68k.md: Name the pattern that uses the REG_NONNEG
5572: note to "decrement_and_branch_until_zero".
5573:
5574: * Makefile.in: Add source file unroll.c and header file loop.h to
5575: the cc1 dependencies. Add *.cse2 to the list of files deleted by
5576: `make clean'.
5577:
5578: Thu Apr 4 16:13:37 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5579:
5580: * varasm.c (assemble_constructor, assemble_destructor): New functions.
5581: They use ASM_OUTPUT_CONSTRUCTOR and ASM_OUTPUT_DESTRUCTOR.
5582: * cplus-decl2.c (finish_file): Use them.
5583:
5584: * reload.c (find_reloads): Pass location as outloc for output reload.
5585:
5586: * objc-actions.c (objc_class_id, synth_module_prologue):
5587: Initialize new variable to hold identifier for "objc_class".
5588:
5589: * objc-actions.c (objc_comptypes): Allow assigning between types
5590: id and Class without warning.
5591:
5592: * c-typeck.c (warn_for_assignment): When there is a type mismatch
5593: in the hidden arguments of a message expression, don't print the
5594: argument number as 0 or -1. Instead print the warning as would
5595: be done for an explicit call to objc_msgSend (this should never
5596: happen, but just in case).
5597:
5598: * emit-rtl.c (gen_lowpart): Reverse #if for CONST_DOUBLE case.
5599:
5600: Thu Apr 4 13:27:02 1991 Michael Meissner (meissner at osf.org)
5601:
5602: * hard-reg-set.h (SET_HARD_REG_BIT, CLEAR_HARD_REG_BIT,
5603: TEST_HARD_REG_BIT): Use unsigned arithmetic to isolate the word and
5604: bit number, which produces better optimized code.
5605:
5606: Thu Apr 4 07:34:17 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5607:
5608: * reorg.c (relax_delay_slots): Avoid adjusting LABEL_NUSES if the
5609: insn is a conditional return.
5610:
5611: * reload1.c (reload): If we find that a replacement cannot be
5612: done and that replacement now enables a secondary replacement,
5613: this may disable a third replacement in some cases.
5614: (eliminate_regs, case SET): Don't stop after we find the first
5615: match when looking for modified registers.
5616:
5617: * combine.c (previous_num_undos): New var.
5618: (try_combine): Set it after each call to subst.
5619: When substituting I1 into I2, somtimes make a copy of PATTERN (i2).
5620: (gen_rtx_combine): Start at PREVIOUS_NUM_UNDOS.
5621:
5622: * combine.c (can_combine_p): Start check for volatile references
5623: after INSN, not at INSN.
5624:
5625: * combine.c (try_combine): When we find a split point, ensure
5626: that I2 is a register. If it is of the wrong mode, change the
5627: mode if we can, just like we do with CCmode registers.
5628: (find_split_point): Don't split an extraction if it crosses the
5629: boundary given by the field (i.e., a byte boundary if QImode).
5630: Correct typo: Should generate LSHIFTRT, not LSHIFT.
5631: (subst): Correctly test to see if we can change the mode of
5632: a register for a MODE_CC comparison.
5633: (distribute_notes): If a NOTE references a pseudo-register,
5634: ensure it references the latest copy of that register.
5635: When scanning for last use, don't stop at CALL_INSNs.
5636:
5637: * combine.c (expand_compound_operation): Don't get confused about
5638: (zero_extend (asm_operands ..)) because of the VOIDmode ASM_OPERANDS.
5639: (simplify_and_const_int): Ensure we do computations in proper mode.
5640: Simplify ZERO_EXTRACT and ZERO_EXTEND when we have a PLUS.
5641: (significant_bits): Don't call get_last_value on a SUBREG, just REG.
5642: Correct significant bits for comparison operations.
5643: (simplify_shift_const): When VAROP is logical, use proper mode when
5644: computing shifted constant.
5645:
5646: * combine.c (gen_lowpart_for_combine): Call gen_lowpart if we have
5647: a CONST_DOUBLE.
5648:
5649: * genconfig.c (walk_insn_part, main): Write a definition
5650: for HAVE_lo_sum if a LO_SUM is present in the machine description.
5651:
5652: * combine.c (try_combine): If we have a PARALLEL of a SIGN_EXTEND
5653: and a load of memory, split it into a load and SUBREG assignment.
5654: (find_split_point): If we have LO_SUM for this machine,
5655: split (mem (symbol_ref ..)) using HIGH and LO_SUM.
5656: If we have operation with second operand constant, maybe we couldn't
5657: fit the constant in the insn, so try to split there.
5658: Move NOT to first operand so we'll try to split the other operand
5659: first.
5660: (subst): No reason to avoid making paradoxical SUBREGs and we miss
5661: some optimizations if we don't.
5662: Convert (lo_sum (high FOO) FOO) to FOO.
5663: Convert (C1 + (x + C2) to (C1 - C2) - x.
5664: Use distributive law in more places with logical operations.
5665: (apply_distributive_law): Properly distribute IOR over XOR.
5666: (simplify_shift_const): Simplify (ashift (plus ..) ...).
5667: (simplify_comparison): Add code to remove extraneous AND
5668: operations when comparing result of two comparisons on some machines.
5669: Ignore bits not applicable in our mode.
5670: Treat some SUBREGs as ZERO_EXTENDs.
5671: Convert equality comparison of AND with sign bit into LT or GE
5672: comparison.
5673:
5674: * combine.c (gen_binary, gen_unary): New functions.
5675: (apply_distributive_law, simplify_shift_const): Use gen_binary.
5676:
5677: Wed Apr 3 16:15:17 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5678:
5679: * Makefile.in (gnulib): Insert only .o files in combined archive.
5680: (gnulib1.portable): Use $(HPXT).
5681: * make-hp9k320g: Define HPXT.
5682:
5683: * From [email protected].
5684: * sched.c (schedule_block): Delete previously unused variable last_q.
5685: Correct handling of registers with multiple lifetimes within a single
5686: block, always save lifetime info, and clear the appropriate bit in
5687: old_live_regs. Delete now unused variable sched_reg_n_sets.
5688:
5689: Wed Apr 3 07:43:35 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5690:
5691: * tm-romp.h (CONST_COSTS): All CONST_INTs are cost 0. Symbolic
5692: values cost two insns.
5693:
5694: * function.c (fixup_var_refs_1): Correctly perform position
5695: computation for bit extracts; disallow mode-dependent addresses.
5696: (optimize_bit_field): Likewise.
5697: Remove explicit mention of HImode and QImode by calling mode_for_size.
5698: No need to check for offsettable_address_p; we call change_address
5699: and are not called after reload; don't call adj_offsettable_operand.
5700: * recog.c (validate_replace_rtx_1): Correct endian computation
5701: and don't change mode of a MEM with a mode-dependent address.
5702:
5703: * expmed.c (expand_divmod): Try to figure out what mode will be used
5704: and convert to that once at the beginning, rather than repeatedly,
5705: since we may be writing jumps.
5706:
5707: * vax.md ({zero,sign}_extract patterns): Field width is QImode, not
5708: SImode.
5709:
5710: Tue Apr 2 08:42:23 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5711:
5712: * cse.c (simplify_ternary_operation): Add argument for previous
5713: mode of operand 0.
5714: Don't do anything for extractions if bits don't fit in OP0_MODE.
5715: Use OP0_mode instead of mode of OP0 for endian correction.
5716: (fold_rtx): Pass new operand to simpllify_ternary operation.
5717: * integrate.c (subst_constants): Add extra arg to call to
5718: simplify_ternary_operation and call for rtx class 'b'.
5719: * combine.c (find_split_point): Don't split an extract when the
5720: bits are outside the mode of operand 0.
5721: (subst): Pass new parameter to simplify_ternary operation and call
5722: for rtx class 'b'.
5723: (subst, case ZERO_EXTRACT): Don't change the mode of a MEM
5724: if it is a mode-dependent address.
5725: Correctly do endian adjustments so they are correct for fields that
5726: go outside a byte boundary.
5727: (subst, case {ZERO,SIGN}_EXTRACT): Don't adjust MEM here for non-dest
5728: objects; already done in make_compound_operation.
5729: (make_compound_operation): Rework code that makes extracts and
5730: extends to correcty compute positions, taking into account the fact
5731: that field can cross byte boundaries. Remove redundant adjustments.
5732: Use mode_dependent_address_p to validate changing modes of MEM.
5733: (simplify_shift_const): Check for mode-dependent address when
5734: changing mode of a MEM.
5735: (gen_lowpart_for_combine): Likewise.
5736:
5737: * expmed.c (expand_shift): Code to use extzv for logical right shift
5738: had numerous assumptions about specific modes and did not validate
5739: operands properly.
5740:
5741: * expr.c (expand_expr, case NOP_EXPR): If no target was specified,
5742: use convert_to_mode instead of convert_move; this may return a SUBREG.
5743:
5744: * expr.c (do_jump): Conversion isn't NOP if it narrows the object.
5745: If testing A & CONST and the result fits in a smaller mode, try
5746: the compare there.
5747:
5748: * cse.c (simplify_binary_operation): If eliminating reference to
5749: operand, verify that it has no side effects.
5750: Add cases for "a | (~a)" and "a & (~a)".
5751:
5752: * recog.c (register_operand): Only call general_operand for
5753: (subreg (mem ...) X), not all SUBREGs.
5754:
5755: * jump.c (jump_optimize): Remove needless incrementing of LABEL_NUSES
5756: which can cause a dead label not to go away.
5757:
5758: Mon Apr 1 19:08:40 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5759:
5760: * cse.c (cse_insn): Add missing call to insert_regs.
5761:
5762: Mon Apr 1 18:21:33 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5763:
5764: * optabs.c (init_optabs): Change #if to #ifdef.
5765:
5766: * loop.c (check_dbra_loop): Take out Feb 24 change.
5767:
5768: Sun Mar 31 22:43:39 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5769:
5770: * final.c (insn_counter): New variable.
5771: (final_scan_insn): Increment it.
5772: (output_asm_insn): Use it for %=.
5773:
5774: Sun Mar 31 22:16:31 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5775:
5776: * out-a29k.c (output_prolog): Correctly write stack size in tag word.
5777:
5778: * out-a29k.c (srcb_operand): If QImode, any constant is OK since
5779: we only care about 8 bits.
5780: (print_operand): Add %Q for QImode srcb values.
5781: * a29k.md (QImode patterns): srcb's that accept constants should have
5782: 'n' constraint, not 'I'; use %Q to output.
5783:
5784: * reload1.c (gen_input_reload): Properly generate reload when we are
5785: adding a pseudo and a hard register.
5786:
5787: * cse.c (simplify_unary_operation): Don't use ffs.
5788:
5789: Sun Mar 31 20:59:52 1991 Micheal Tiemann (tiemann at pogo.gnu.ai.mit.edu)
5790:
5791: * gnulib1.c (perform_ash{l,r}si3): Fix typo that had these
5792: performaces swapped.
5793:
5794: Sun Mar 31 13:35:50 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5795:
5796: * rtl.h (FIND_REG_INC_NOTE): New macro.
5797: * rtl.h (AUTO_INC_DEC): Define here.
5798: * flow.c (AUTO_INC_DEC): Not here.
5799: * combine.c (can_combine_p, try_combine): Use FIND_REG_INC_NOTE.
5800: Make other scans for REG_INC notes conditional on AUTO_INC_DEC.
5801: * final.c (final_scan_insn): Use FIND_REG_INC_NOTE.
5802: * jump.c (delete_jump): Likewise.
5803: * loop.c (get_condition): Likewise.
5804: * reload.c (find_reloads_address_1, find_equiv_reg): Likewise.
5805: * reload1.c (reload_as_needed): Likewise.
5806: * reorg.c (delete_scheduled_jump, mark_set_resources): Likewise.
5807: * global-alloc.c (global_conflicts): Likewise.
5808:
5809: * dbxout.c (dbxout_type): For integers, reals, and arrays,
5810: use actual type number of int or char, in case those are not 1 and 2.
5811:
5812: * toplev.c (compile_file): Take out last change (regarding lang_init).
5813:
5814: * emit-rtl.c (sequence_element_free_list): Change data type.
5815: (get_last_insn_anywhyere, add_insn_after): Finish last change.
5816:
5817: * expr.c (expand_builtin): Finish last change.
5818:
5819: Sat Mar 30 15:16:16 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5820:
5821: * function.h (struct sequence_stack): New data type.
5822: (sequence_stack): Declare variable. Use new data type.
5823: * emit-rtl.c (get_last_insn_anywhere, add_insn_after): Adapt to that.
5824: (start_sequence, end_sequence, in_sequence): Likewise.
5825: (start_sequence): Allocate stack links as permanent.
5826: (init_emit_once): Init sequence_stack here.
5827: (init_emit): Not here.
5828: * function.c (push_temp_slots, pop_temp_slots):
5829: (expand_function_end): Use in_sequence.
5830: (fixup_var_refs): Use new data type.
5831: (put_var_into_stack): Don't declare sequence_stack.
5832:
5833: * function.c (expand_function_start):
5834: Trace static chain properly past first link.
5835:
5836: * ns32k.md (andcbhi3, andcbqi3): Constraint shouldn't say commutative.
5837:
5838: Sat Mar 30 02:06:20 1991 North-Keys (erlkonig at apple-gunkies.gnu.ai.mit.edu)
5839:
5840: * c-decl.c (init_decl_processing): Fix typo `integer_tpe_node'.
5841: * dbxout.c (dbxout-symbol): Added char * declaration for `name'.
5842: * objc-actions.c (encode_array): Avoid returning a value.
5843:
5844: Fri Mar 29 15:59:22 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5845:
5846: * c-decl.c (init_decl_processing): Define __builtin_constant_p.
5847: * expr.c (expand_builtin): Implement it.
5848: * tree.h (enum built_in_function): New alternative.
5849:
5850: * toplev.c (compile_file): Move lang_init call after debugger init.
5851:
5852: * gcc.c (default_compilers): Define __cplusplus for C++ code.
5853:
5854: * c-decl.c (start_function): Use 0 for name of result decl.
5855: (value_identifier): Variable deleted.
5856:
5857: * dbxout.c (dbxout_type): Handle LANG_TYPE.
5858: (dbxout_symbol): Handle RESULT_DECL.
5859: Handle variables with constant values that are not output.
5860: Use the mangled name when appropriate.
5861: (dbxout_tags): Output equivalent typedef when appropriate.
5862: (dbxout_function): Output the DECL_RESULT if it has a name.
5863:
5864: * varasm.c (assemble_variable): Delete calls to set_current_gdbfile.
5865:
5866: Thu Mar 28 16:14:13 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5867:
5868: * gcc.c (main): Calculate basename_length to exclude last period.
5869:
5870: * optabs.c (expand_binop, expand_unop):
5871: When widening, don't keep CONST_INT beyond a single word.
5872:
5873: * tm-vax.h (CHECK_FLOAT_VALUE): Change float max to ...444e+38.
5874:
5875: * Makefile.in (gnulib1, gnulib2.portable):
5876: Make test of $$? normally succeed, not normally fail.
5877: (gnulib1): Don't use -e in second loop. Test explicitly instead.
5878:
5879: * dbxout.c (lastfile): New static variable.
5880: (dbxout_init): Initialize lastfile.
5881: * final.c (lastfile): Deleted.
5882: (init_final): Don't set lastfile.
5883:
5884: * final.c (set_current_gdbfile): Function deleted.
5885: (output_source_line): Handling of GDB debugging info deleted.
5886: (final_start_function, final_end_function): Likewise.
5887:
5888: Thu Mar 28 09:58:18 1991 Micheal Tiemann (tiemann at pogo.gnu.ai.mit.edu)
5889:
5890: * cplus-decl.h (decl_context): Add missing declaration for BITFIELD.
5891:
5892: * tm-sparc.h (CC1_SPEC): Change to handle new interpretation of -O2.
5893: (OPTIMIZATION_OPTIONS): Use this macro to control default expensive
5894: optimizations.
5895: (MODES_TIABLE_P): Use GET_MODE_CLASS to simplify this macro.
5896: (FUNCTION_ARG,FUNCTION_ARG_PARTIAL_NREGS): Make sure TYPE is nonzero
5897: before we use it.
5898: (FUNCTION_BLOCK_PROFILER): Fix a bug in the asm code.
5899: (EXTRA_CONSTRAINT): For 'S' constraint, if OP is a register, make
5900: sure it's not a pseudo. Also, change call to `memory_address_p' to
5901: `strict _memory_address_p'. Both of these are for the strict cases.
5902: (SLOW_BYTE_ACCESS): Try going with this set 1.
5903: * sparc.md: Take advantage of new combiner to handle signed bitfield
5904: comparisons and signed sub-word comparisons.
5905: Added peepholes for doing subword memory tests and operations.
5906:
5907: Thu Mar 28 09:43:30 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5908:
5909: * emit-rtl.c (start_sequence, gen_sequence): Ensure we allocate rtl
5910: on saveable_obstack since we will be saving it and we may be called
5911: from an optimizer that will reuse allocated memory in current_obstack.
5912:
5913: Wed Mar 27 18:46:27 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
5914:
5915: * toplev.c (main): Print version with -version, regardless of
5916: -quiet.
5917:
5918: * Makefile.in (gnulib, gnulib2.ready): Put `-' before `if'.
5919:
5920: * make-hp9k320, make-hp9k320g (CC, OLDCC): Delete -lsetjmp.
5921: Add -Wc,-Nw2000.
5922:
5923: * dbxout.c (dbxout_source_file): New name for fn moved from final.c.
5924: * final.c (output_source_file): Moved to dbxout.c. Callers changed.
5925: (output_source_line): Call dbxout_source_file.
5926:
5927: Wed Mar 27 11:09:13 1991 Micheal Tiemann (tiemann at pogo.gnu.ai.mit.edu)
5928:
5929: * version.c: Bumped to version 1.92.
5930:
5931: * final.c (output_source_{file,line}): Fix bug in new handling of
5932: "Ltext".
5933:
5934: * cplus-cvt.c (build_up_reference): Handle BIND_EXPR.
5935:
5936: * Makefile.in (cplus-lex.o): depend on cplus-input.c.
5937: * cplus-input.c: New file.
5938:
5939: * cplus-method.c (do_inline_function_hair): Call a different
5940: `prepare_inline', and don't deal with pending_inlines here.
5941: * cplus-lex.c (do_pending_inlines): Deal with pending_inlines
5942: here...
5943: (reinit_parse_for_method): ...and here.
5944:
5945: * cplus-decl.c (grok_ctor_properties): Use TYPE_NAME_STRING where
5946: appropriate. Also, don't assume that CURRENT_CLASS_TYPE is what we
5947: use for error message; use CTYPE instead.
5948:
5949: * cplus-type2.c (digest_init): Strip NON_LVALUE_EXPRs.
5950:
5951: * cplus-tree.c (__eprintf): Added this function from gnulib2 until
5952: gnulib configuration is worked out.
5953:
5954: * cplus-parse.y (member_init): Call do_member_init. Previous code
5955: was wrong (using a goto to factor common code) because the parse
5956: stack was different in the two contexts.
5957: * cplus-init.c (do_member_init): New function.
5958:
5959: * cplus-typeck.c (build_compound_expr): Convert arrays to pointers.
5960: (build_c_cast): Warn about possible alignment problems.
5961:
5962: Wed Mar 27 05:55:32 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5963:
5964: * reload.c (find_reloads): Disallow a PLUS as an operand even if
5965: "g" is in the constraint; this is only valid for "p".
5966:
5967: Tue Mar 26 06:46:48 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5968:
5969: * local-alloc.c (block_alloc): Have insn numbers start at 1, not 2.
5970:
5971: * rtlanal.c (replace_regs): Move to here; add new parameter.
5972: * loop.c (replace_regs): Delete from here.
5973: (move_movables, strength_reduce): Pass new parameter to replace_regs.
5974: * jump.c (duplicate_loop_exit_test): Make new pseudos for pseudos
5975: used only in loop exit test; this prevents unnecessay sharing
5976: between code inside and outside of loop.
5977: * toplev.c (rest_of_compilation): Call reg_scan before jump.
5978:
5979: * combine.c (distribute_notes): If we are searching back for the last
5980: use of a register I3 and I2 no longer use and the last use is a SET
5981: of that register, place a REG_UNUSED note instead of a REG_DEAD note.
5982: No longer need handle REG_DEAD note for output of I3; it will now be
5983: a REG_UNUSED note.
5984:
5985: * combine.c (try_combine): If I3SRC is a register and I2 is a
5986: multi-output insn, see if we can replace one of the outputs with
5987: I3DEST. If so, move LOG_LINKS pointing at the other outputs to
5988: now point to I3 instead of I2.
5989:
5990: * rtlanal.c (single_set): Return 0 if not an insn.
5991: Only ignore SET with unused output if it has no side effects.
5992: (side_effects_p): New function.
5993: * combine.c (can_combine_p): Only ignore SET with unused output if
5994: it has no side effect.
5995: Don't extend the life of a hard register.
5996: (try_combine): Always give up if I1 or I2 used reg inc'd in I3.
5997: (significant_bits): Return mode mask if mode wider than host int.
5998: Don't get confused by (zero_extend (const_int ..)) and similar where
5999: the inner mode is VOIDmode.
6000: Arithmetic operations now always have same modes on operands as
6001: on the result.
6002:
6003: * jump.c (jump_optimize): Set this_is_{simple,cond}jump at the start
6004: of loop, not in middle, and use consistently.
6005: Use can_reverse_comparison_p in case where we make scc insn.
6006: Don't use can_reverse_comparison_p when we call invert_jump.
6007: Use indirect_jump instead of indirect_exp.
6008: Check invert_jump's result before making any other changes; handle
6009: failure.
6010: Simplify code that looks for and deletes USE insns.
6011: (jump_back_p): Call can_reverse_comparison_p only if we have to
6012: reverse the comparison.
6013: (can_reverse_comparison_p): Accept comparison expression and insn
6014: it comes from.
6015: Rework to be more general now that we have MODE_CC and tighten
6016: up a bit.
6017: (invert_jump): Allow invert_exp and redirect_jump to fail.
6018: (invert_exp): Only invert jump, don't change target.
6019: If can reverse comparison code, try it using validate_change.
6020: If that doesn't work, swap the arms of the IF_THEN_ELSE. If that
6021: doesn't work, return 0.
6022: (redirect_exp): Now static.
6023: * expr.c (do_jump_for_compare): Call invert_jump to invert jump
6024: to false label after emitting jump; if this fails, convert to
6025: jump around unconditional jump to false label.
6026: (do_store_flag): Set to 1 first, then branch, then set to 0. This
6027: avoids inverting branches.
6028: * reorg.c (optimize_skip, relax_delay_slots): Always allow invert_jump
6029: to fail.
6030: * rtlanal.c (single_set): Return 0 if not INSN, CALL_INSN,
6031: or JUMP_INSN.
6032:
6033: * reload1.c (eliminate_regs): If any eliminable regs occur in a USE,
6034: eliminate them.
6035:
6036: Tue Mar 26 00:09:18 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
6037:
6038: * c-decl.c (implicitly_declare): Always make implicit decl permanent.
6039:
6040: Mon Mar 25 16:38:14 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
6041:
6042: * genextract.c (walk_rtx): Record operand numbers that are seen.
6043: (gen_insn): If there are gaps in operand numbers, make code to store
6044: something for the operands not used in this pattern.
6045: (main): Initialize data structures.
6046:
6047: * c-typeck.c (initializer_constant_valid_p):
6048: Always allow length-preserving conversions between integer types.
6049:
6050: * regclass.c (reg_class_record): Return right away if operand is 0.
6051:
6052: * c-decl.c (duplicate_decls): Warn if declare fcn inline after calls.
6053:
6054: * reload.c (combine_reloads):
6055: Test reg_overlap_mentioned_p in both directions.
6056:
6057: Mon Mar 25 15:05:29 1991 Tom Wood (wood at dg-rtp.dg.com)
6058:
6059: * genoutput.c (output_epilogue): Choose a name for an unnamed
6060: pattern as an offset from the closest named pattern. Define
6061: `insn_name_ptr' as a pointer to `insn_name' for use by print_rtx.
6062: * final.c (output_asm_insn): Use the pattern name chosen by
6063: genoutput and output the INSN_UID as well.
6064: * rtl.c (insn_name_ptr): Provide an alternate definition to avoid
6065: link errors when rtl.o is not linked with insn-output.o.
6066: (print_rtx): When printing the INSN_CODE field of an insn, print
6067: the name if it is available.
6068:
6069: Mon Mar 25 09:39:43 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6070:
6071: * regs.h (reg_first_use): Deleted.
6072: * rtl.h (REG_UNSET): Deleted.
6073: (REG_UNUSED): New note.
6074: * combine.c (combine_instructions): Delete loop fixing up
6075: reg_first_use.
6076: (can_combine_p): Ignore a branch of a PARALLEL if its output is
6077: never used.
6078: (move_deaths): Don't update reg_first_use.
6079: (distribute_notes): Don't handle REG_UNSET; add code for REG_UNUSED.
6080: * flow.c (reg_first_use): Deleted.
6081: (life_analysis): Restore code that marks vars live at start of function
6082: as globals. These are registers that were never set.
6083: (allocate_for_life_analysis): Don't allocate reg_first_use.
6084: (propagate_block): Search for cc0-setting insn with prev_nonnote_insn.
6085: (mark_set_1): Don't set reg_first_use.
6086: If register is never used, make REG_UNUSED note, not REG_DEAD.
6087: (mark_used_regs): Don't set reg_first_use.
6088: * global-alloc.c (global-conflicts): Dead outputs are now denoted by
6089: REG_UNUSED notes, not REG_DEAD.
6090: * reload.c (find_dummy_reload): Delete test of REG_UNSET; add test
6091: of REG_UNUSED.
6092: (find_equiv_reg): Don't re-use an output marked as REG_UNUSED;
6093: we want these notes to be accurate; this would rarely win anyway.
6094: * reload1.c (emit_reload_insns): Test REG_UNUSED to see if an
6095: output won't be used any more.
6096: * reorg.c (mark_target_live_regs): Use REG_UNUSED notes to kill
6097: registers dead after an insn.
6098: * rtl.c (reg_note_name): Delete REG_UNSET, add REG_UNUSED.
6099: * rtlanal.c (single_set): Ignore a SET whose output has a REG_UNUSED
6100: note.
6101: * sched.c (update_first_use): Deleted.
6102: (update_links): No need to call update_first_use.
6103:
6104: * local-alloc.c: Major changes to use REG_UNUSED notes, make
6105: handling of only-set registers more consistent, and allow
6106: two consecutive CLOBBERs to share a register. Also, avoid loops
6107: over all register each basic block; eliminating these make local-alloc
6108: three times faster!
6109: Quantity numbers now start at zero.
6110: (qty_first_reg, reg_next_in_qty): New variables.
6111: (qty_clobber): No longer needed.
6112: (reg_qty): -1 if register cannot be allocated by local-alloc.
6113: Now undefined for hard registers.
6114: (reg_offset): Now char *.
6115: (call_seen): Deleted, never used.
6116: (regs_live_at): Now two entries per insn.
6117: (alloc_qty): Initialize chain of register in quantity.
6118: (local_alloc): Remove all per-block loops over registers.
6119: Only allocate qty_... vars for max_reg - FIRST_PSEUDO_REGISTER.
6120: Initialize reg_qty once per function.
6121: Don't initialize qty_... vars that are always set before use.
6122: (block_alloc): Delete insn_map, max_uid, and call_used.
6123: Insn numbers start at 1 and we have two entries in regs_live_at
6124: for each insn.
6125: Search for REG_NO_CONFLICT block when we see a CLOBBER insn; this
6126: avoids having already seen sets to the output register.
6127: Call wipe_dead_reg for anything in a REG_UNUSED note.
6128: Delete references to reg_first_use.
6129: Don't check for invalid birth and death here.
6130: Don't call qsort if we have 0 or 1 quantities.
6131: Find all registers for a quantity using reg_next_in_qty chain instead
6132: of looping over all pseudos.
6133: (combine_regs): Refine tests to agree with new conventions.
6134: Never tie pseudos if SREG already has a quantity assigned.
6135: When updating size, use reg_next_in_qty instead of looping over
6136: all registers.
6137: (reg_is_set): Just call reg_is_born. Where it is born depends on
6138: whether we have a CLOBBER or not. Birth location is now twice
6139: the insn number.
6140: (reg_is_born): Handle case when a hard reg is born before the
6141: current insn.
6142: Show we don't know the death location.
6143: (wipe_dead_reg): Parameters are now just register and an in/out flag.
6144: Death locations are now twice the insn number.
6145: Support hard regs that die immediately after current insn.
6146: Don't make REG_UNSET notes.
6147: (find_free_reg): Validate BIRTH and DEATH here.
6148: We no longer have qty_clobber.
6149: (post_mark_life): Eliminate CLOBBER parameter.
6150: (no_conflict_p): Now passed CLOBBER at start of block. Return 0 if
6151: can't find death note or if R1 is a hard register.
6152:
6153: * m68k.md (divsi3, udivsi3): Remove patterns. Using divmodsi4 and
6154: udivmodsi4 produces better code.
6155: (divmodsi4, udivmodsi4): If remainder isn't needed, use divsl/divul
6156: instead of divsll/divull.
6157:
6158: * integrate.c (expand_inline_function): Remove change of March 20th.
6159: Instead, expand args in two passes. First, expand all that go
6160: into registers. Then do those in memory with store_expr.
6161:
6162: * integrate.c (initialize_for_inline): Put the original copy of the
6163: address into ARG_VECTOR; the new one will be modified.
6164:
6165: * reload.c (push_reload): Handle paradoxical SUBREGs on an output
6166: as well as an input.
6167:
6168: * flow.c (mark_label_ref): Don't blow up when X is 0.
6169:
6170: * combine.c (make_compound_operation): Fix typos; result of
6171: exact_log2 is interesting if >=0.
6172:
6173: * a29k.md (store_multiple): Allow gen_store_multiple{_no,}_bug to fail;
6174: we fail if they do.
6175:
6176: * reorg.c (emit_delay_sequence): Record that we deleted a BARRIER
6177: and restore it precisely on those occaisions.
6178:
6179: Sun Mar 24 21:19:55 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
6180:
6181: * gcc.c (xmalloc, xrealloc): Change error message.
6182: * toplev.c (various): Change error messages.
6183:
6184: * final.c (final_scan_insn): Handle ASM_OUTPUT_LOOP_ALIGN.
6185:
6186: * calls.c (emit_call_1): Pass number of bytes to pop to call_pop.
6187: * vax.md (call_pop, call_value_pop): Use that arg.
6188:
6189: Sat Mar 23 23:28:59 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
6190:
6191: * Makefile.in (version): Run awk, not gcc, to get this value.
6192:
6193: Sat Mar 23 18:04:23 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6194:
6195: * cse.c (simplify_unary_operation): Add missing cases for ABS and FFS.
6196:
6197: * alliant.md: Eliminate unneeded patterns: HImode zero_extract,
6198: (set (cc0 (subreg ...))), (set (cc0) (and ...)),
6199: (and (zero_extend ...) ...), shift right of 24 and 16.
6200: Use alternatives to select assembler template when possible.
6201: Use const_int_operand instead of immediate_operand when
6202: possible to avoid explicit test for CONST_INT.
6203: Write add-and-branch patterns with PLUS removed, the way combine
6204: produces them.
6205:
6206: * rtlanal.c (refers_to_regno_p): If X is a SUBREG of a hard
6207: register, treat it as if it were the appropriate register.
6208: CLOBBER doesn't refer to anything.
6209:
6210: * final.c (final_scan_insn): Use prev_nonnote_insn, not PREV_INSN,
6211: to find cc0-setting insn from cc0-using insn.
6212:
6213: * global-alloc.c (find_reg): Don't look for other registers to
6214: renumber unless we know that we are sharing registers.
6215:
6216: * emit-rtl.c (end_sequence): Fix typo that prevented speedup of
6217: Dec 26th from doing anything.
6218:
6219: * toplev.c (do_abort): New function, just calls abort.
6220: (main): Set lang_expand_expr to address of do_abort; abort might be
6221: a macro that is more than just a function name.
6222:
6223: * cse.c: (qty_... variables): Refined to be undefined for indices
6224: less than MAX_REG. Thus, we need not intialize them at the start
6225: of a basic block and can instead inialize a quantity as we create it.
6226: (reg_{next,prev}_eqv): These variables will now be defined only when
6227: reg_qty[N] != N and hence need not be initialized every block either.
6228: (new_basic_block): Need not initialize reg_rtx for new block; the
6229: only time we can inherit values from previous blocks is for hard
6230: regs and it doesn't matter in that case.
6231:
6232: * c-parse.y (yylex): Avoid use of size_t; it may not be defined.
6233: Cast alloca to (char *).
6234:
6235: * out-romp.c (update_cc): cc_status.value[12] can also be a COMPARE,
6236: so use reg_overlap_mentioned_p to see if an insn that modifies a
6237: register invalidates cc0.
6238:
6239: * reorg.c (link_cc0_insns): If next insn is a SEQUENCE, the insn
6240: using cc0 is the first insn in the sequence.
6241: (mark_target_live_regs): Don't assume that a REG_DEAD note always
6242: refers to a register.
6243:
6244: Sat Mar 23 15:35:59 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
6245:
6246: * reload1.c (reload_reg_free_before_p):
6247: An input reload is use before an output or output address reload.
6248:
6249: * genoutput.c (validate_insn_alternatives): New function.
6250: Loop over insn's alternatives to find out how many
6251: alternatives the insn pattern is to support. Verify that if
6252: any alternatives are specified for a given operand that the
6253: number of alternatives match the numer of alternatives for
6254: this insn.
6255: (gen_{insn,peephole,expand,split}): Call
6256: `validate_insn_alternatives' after scanning the insn. This
6257: sets up the value N_ALTERNATIVES for the insn so that
6258: `process_template' can check that the number of alternitves
6259: given matches the number of asm choices for `@' constructs.
6260:
6261: Sat Mar 23 08:09:57 1991 Michael Meissner (meissner at osf.org)
6262:
6263: * dbxout.c (toplevel, dbxout_init): Instead of always using `Ltext'
6264: as the label at the beginning of the text region, properly localize
6265: it, so that machines which do not put leading underscores in front
6266: of external names do not have a problem if the user uses `Ltext'.
6267: (dbxout_init): Call text_section before putting out localized
6268: `Ltext', in case ASM_FILE_START put us into a different section.
6269:
6270: Fri Mar 22 19:26:23 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6271:
6272: * a29k.md (jumpfdec): Simplify pattern to match what combine will
6273: produce; remove reversed pattern.
6274: * out-a29k.c (gen_reg_operand): Speed up by not calling
6275: register_operand; check register number ourself.
6276:
6277: * out-romp.c (update_cc, case CC_COMPARE): Call CC_STATUS_INIT.
6278: * romp.md: In pattern that sets cc0 and copies a register to another
6279: register, allow the output to be in memory so that we don't get an
6280: output reload, which will cause problems.
6281:
6282: * varasm.c (assemble_variable): Ensure DECL_INITIAL is non-zero
6283: before we reference it; it might be zero if -fno-common.
6284:
6285: Fri Mar 22 16:11:35 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
6286:
6287: * toplev.c (abort): Don't declare if defined as macro.
6288:
6289: Fri Mar 22 11:49:43 1991 Tom Wood (wood at dg-rtp.dg.com)
6290:
6291: * m88k.md (bxxu): Don't attempt to use bcnd.
6292: (umulsi3, ashift/and): Remove these patterns.
6293: (dummy): This must be a define_expand.
6294: * out-m88k.c (m88k_handle_pragma_token): Handle #pragma weak.
6295: * tm-m88k.h, tm-m88kdgux.h, tm-m88ksvr4.h, tm-v88r32.h: Various
6296: changes to support SVR4, including support for #pragma weak.
6297: (SLOW_BYTE_ACCESS): Better code if this is true.
6298:
6299: Thu Mar 21 09:15:47 1991 Tom Wood (wood at gen-rtx)
6300:
6301: * c-parse.y (MULTIBYTE_CHARS): New macro.
6302: (init_lex): Change to the native locale.
6303: (yylex): Process wide character literals and wide character string
6304: literals using mbtowc and mbstowcs based on MULTIBYTE_CHARS.
6305:
6306: Thu Mar 21 15:46:45 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6307:
6308: * rtlanal.c (dead_or_set_p): A register is dead if it is assigned
6309: via a SUBREG that references the all the words in the register.
6310:
6311: * tm-vax.h (CONST_OK_FOR_LETTER_P): Define `I' to be constant zero.
6312: (CONST_DOUBLE_OK_FOR_LETTER_P): Define `G' to be floating zero.
6313: (CONST_COSTS): +/- 1 should be very cheap due to decl/inc/aob/sob.
6314: (PRINT_OPERAND): Add `P', `N', `H', and `B'.
6315: * vax.md: Rework many patterns to avoid C code for output template;
6316: use "@" construct whenever possible.
6317: Use INSN_DELETED_P.
6318: Remove extendsidi2; the supplied pattern does exactly what convert_move
6319: will do when the pattern is not present.
6320: Use constm1_rtx to check for constant of -1.
6321: Add mulsidi3 and related add-multiply pattern for emul insn.
6322: Use const_int_operand as predicate instead of checking for CONST_INT.
6323: Remove unneeded (set (pc) (if_then_else (ne (and ...) ...) ...))
6324: patterns.
6325: Merge jlbs and jbs and similarly for jlbc and jbc.
6326: Remove unneeded reverse branch patterns for above insns.
6327: Rewrite patterns for add-and-branch insns to take into account
6328: simplifications done by combine and remove reversed cases.
6329: Convert peepholes for optimizing extzv followed or preceeded by andl
6330: into patterns for a single insn.
6331:
6332: Thu Mar 21 15:46:21 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
6333:
6334: * toplev.c (abort): Declare it.
6335:
6336: Thu Mar 21 08:16:12 1991 Michael Meissner (meissner at osf.org)
6337:
6338: * va-mips.h (whole file): Replace with the 1.39 version of this
6339: file, which was a total rewrite of the 1.37.1 version. Add
6340: primitive support for 2.00.
6341:
6342: Wed Mar 20 18:31:42 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6343:
6344: * jump.c (duplicate_loop_exit_test): Make copy of contents of
6345: register note; if it was a REG_EQUAL note, it might have been an
6346: arbitrary expression and sharing it can cause problems in cse.
6347:
6348: * rtl.def (UMULT): Remove unsigned multiply code.
6349: * combine.c (subst, significant_bits): Remove code UMULT and
6350: support for indicating widening multiply with different modes
6351: on the MULT operation vs. its operands.
6352: * cse.c (simplify_binary_operation): Remove support for widening
6353: multiply.
6354: (rtx_code, exp_equiv_p, simplify_binary_operation, cse_insn): Remove
6355: code UMULT.
6356: * function.c (instantiate_virtual_regs_1): Likewise.
6357: * reload1.c (eliminate_regs): Likewise.
6358: * local-alloc.c (block_alloc): Likewise; replace with GET_RTX_CLASS.
6359: * loop.c (simplify_giv_expr, expr_benefit): Remove code UMULT
6360: and support for widening multiply.
6361: * optabs.c (init_optabs): Set code of widening multiply tables
6362: to UNKNOWN.
6363:
6364: * a29k.md (mulsidi2, umulsidi2): Rewrite using SIGN_EXTEND and
6365: ZERO_EXTEND. Also fix typo in SUBREG_WORD when splitting.
6366: * tm-alliant.h, tm-m68k.h (NOTICE_UPDATE_CC): Remove code UMULT.
6367: * alliant.md, m68.md (mulhisi3, umulhisi3): Rewrite using
6368: SIGN_EXTEND and ZERO_EXTEND.
6369: (divhisi3, udivhisi3, modhisi3, umodhisi3): Rewrite using TRUNCATE.
6370: * alliant.md, ns32k.md (umulsi3, umulhi3, umulqi3): Remove unneeded
6371: patterns that use UMULT.
6372: * ns32k.md (umulsidi3): Rewrite using ZERO_EXTEND.
6373:
6374: * tm-alliant.h (NOTICE_UPDATE_CC): MOD and (trunc (mod ...))
6375: clobber CC.
6376: * alliant.md (mod*, umod*): No longer need CC_STATUS_INIT.
6377:
6378: * recog.c: Include insn-attr.h.
6379: (general_operand): If we have insn scheduling, don't allow paradoxical
6380: SUBREGs since they can prevent scheduling memory references; they
6381: aren't helpful on RISCs anyway and can cause poor register allocation.
6382: * Makefile.in (recog.o): Includes insn-attr.h.
6383:
6384: * cse.c (COST): A register only in NO_REGS isn't a specially-cheap reg.
6385: (simplify_unary_operation, case {ZERO,SIGN}_EXTEND): If OP_MODE was
6386: given as VOIDmode, use MODE; allow mode size of HOST_BITS_PER_INT.
6387: (cse_insn): Don't make SET_SRC equal SET_DEST if doing so will cause
6388: two registers to be live containing the same value.
6389: (cse_end_of_basic_block): Count SETs in CALL_INSNs and JUMP_INSNs.
6390:
6391: Wed Mar 20 15:40:48 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
6392:
6393: * gcc.c (MD_EXEC_PREFIX, MD_STARTFILE_PREFIX): New macros.
6394: (md_exec_prefix, md_startfile_prefix): New variables.
6395: (process_command): Put those prefixes on the paths.
6396:
6397: * toplev.c (main): Use abort, not fancy_abort.
6398:
6399: * integrate.c (expand_inline_function): Use emit_block_move
6400: to copy BLKmode parm value. Save size and alignment for this.
6401:
6402: * gnulib2.c (__builtin_saveregs)[MIPS]: Go to text section.
6403:
6404: * final.c (final_scan_insn): Don't go to text after jump-tab label.
6405:
6406: Tue Mar 19 21:27:09 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6407:
6408: * tm-a29k.h (SETUP_INCOMING_VARARGS): Always write registers to
6409: 0(ap), no matter how many named args are present.
6410:
6411: * combine.c (subst): In IF_THEN_ELSE, canonicalize to put the (pc)
6412: in the second operand if we can reverse the comparison.
6413: (significant_bits): Support TRUNCATE and SIGN_EXTEND.
6414:
6415: * tm-romp.h (CC_UNSIGNED): New flag for cc_status.
6416: * out-romp.c (update_cc, case CC_COMPARE): Record the operands of the
6417: compare and mark whether the test will be signed or unsigned.
6418: (restore_compare_p): New function.
6419: * romp.md (conditional branch and return patterns): Use new
6420: restore_compare_p to see if we need to tell final to reinclude
6421: deleted compare insn.
6422:
6423: * output.h (const_int_operand): Define.
6424: * recog.c (const_int_operand): New function.
6425: * out-a29k.c, out-romp.c, out-rs6000.c (const_int_operand): Remove from
6426: these.
6427:
6428: * tree.c (rtl_in_saveable_obstack): New function.
6429: * varasm.c (immed_double_const, immed_real_const_1): Ensure that things
6430: that get placed on the chain are always put into saveable_obstack.
6431:
6432: Tue Mar 19 17:21:30 1991 Richard Stallman (rms at mole.gnu.ai.mit.edu)
6433:
6434: * stddef.h (wchar_t): New typedef.
6435:
6436: * out-sparc.c (output_block_move): Handle NO_UNDERSCORES syntax.
6437:
6438: * tm-pbd.h, xm-pbd.h: New files.
6439:
6440: * toplev.c (report_error_function): Don't crash if between functions.
6441:
6442: Tue Mar 19 12:58:13 1991 Michael Tiemann (tiemann at cygnus.com)
6443:
6444: * sched.c (memrefs_conflict_p): C was being used as offset for X,
6445: not for Y. Flipping + and - in offset uses cleared up this problem.
6446: ({true,anti,output}_dependence): Add declaration for INSN.
6447: (order_calls): Interface changed; now returns void. All callers
6448: changed.
6449: (sched_analyze_{1,2}): Make dependence between calls and
6450: call-clobbered registers explicit.
6451: (sched_analyze): Track last_function_call_not_const.
6452: (sched_note_set): New parameter DEATH says whether X is marked for
6453: death. Also, look through SUBREGs and extractions.
6454: (rank_for_schedule): Stabilize for qsort.
6455: (attach_deaths): We should not end up with more REG_DEAD notes than
6456: we started with, so abort if we run out early.
6457: (attach_deaths_insn): Handle more complicated cases of registers
6458: dying in insns.
6459: (unlink_notes): Work from back-to-front instead of front-to-back.
6460: (new_sometimes_live): Fix code that looks for an element already in
6461: the table.
6462: (schedule_block): New variable TAIL_PRIORITY used to help determine
6463: max IPC of scheduled code. Also, for now we analyze (schedule) all
6464: blocks, even ones which won't benfit from scheduling. This is
6465: necessary to keep register live info correct, but has the
6466: disadvantage of screwing *all* debug info, not just for the blocks
6467: that were scheduled.
6468: (update_links): Fix complicated code that was to be a simple
6469: head-cons to be a simple head-cons.
6470: (schedule_insns): Update REG_LIVE_LENGTH and REG_N_CALLS_CROSSED
6471: after scheduling.
6472:
6473: * sparc.md (cmpdf): Define an expand pattern for this. (Dropped by
6474: mistake when converted from old-style to new-style condition codes).
6475:
6476: * out-sparc.c (singlemove_string): Catch case where `sethi' can be
6477: used instead of `mov'.
6478:
6479: * gcc.texinfo (Optimize Options): Add documentation about the
6480: `-finline' option (actually, the `-fno-inline' option).
6481:
6482: * out-sparc.c (output_block_move): Use `rtx_alloc' instead of
6483: `gen_rtx' to cons a CONST_INT whose INTVAL we can change.
6484:
6485: * toplev.c (main): Recognize all -O strings (i.e. -O3, -O69), not
6486: just -O and -O2.
6487:
6488: Mon Mar 18 22:30:21 1991 Richard Stallman ([email protected])
6489:
6490: * expr.c (expand_expr): For TRUTH_ANDIF_EXPR, don't use hard target
6491: if not optimizing.
6492:
6493: * combine.c: Fix some comments; reorder the variable declarations.
6494:
6495: Mon Mar 18 12:07:03 1991 Matthew Self ([email protected])
6496:
6497: * tm-next.h (WORD_SWITCH_TAKES_ARG): Return number of args taken.
6498:
6499: * tm-next.h (CPLUSPLUS): Deleted (obsolete).
6500:
6501: * out-next.c (flag_no_mach_text_sections, handle_pragma):
6502: Handle #pragma CC_NO_MACH_TEXT_SECTIONS.
6503:
6504: Mon Mar 18 12:12:13 1991 Richard Stallman (rms at goldman)
6505:
6506: * cplus-pt.c: Renamed from cplus-template.c.
6507: * Makefile.in (cplus-pt.o): New target.
6508:
6509: * c-typeck.c (initializer_constant_valid_p):
6510: Allow casts that change width only for explicit values.
6511: * tree.c (really_constant_p): New function.
6512: * expr.c (expand_expr): Handle MINUS_EXPR with EXPAND_SUM.
6513:
6514: * tm-m68k.h (FUNCTION_EXTRA_EPILOGUE): Don't normally define this.
6515: * out-m68k.c (use_return_insn): Don't look at FUNCTION_EXTRA_EPILOGUE.
6516:
6517: * out-sparc.c (normal_comp_operator): Replace comparison_code_p.
6518:
6519: Sun Mar 17 22:53:25 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6520:
6521: * m68k.md: Delete patterns now converted by combine to simpler
6522: patterns or otherwise obsolete. Specifically: ZERO_EXTRACT from
6523: an HImode object, setting cc0 to SUBREG or AND, umulhi3, umulsi3,
6524: AND of a ZERO_EXTRACT, shifts of 24 and 16 from MEM, and patterns with
6525: constants as first operand of comparison operator.
6526: Remove COMPARE except as a SET_SRC.
6527:
6528: * alliant.md, tahoe.md, rs6000.md: Remove COMPARE except as a SET_SRC.
6529:
6530: * flags.h (flag_combine_regs): Deleted.
6531: * toplev.c: Likewise.
6532: * tm-a29k.h, tm-romp.h, tm-rs6000.h (OVERRIDE_OPTIONS): No longer
6533: turn on flag_combine_regs.
6534:
6535: * tm-romp.h, tm-rs6000.h (SLOW_BYTE_ACCESS): Set to 1.
6536:
6537: * Makefile.in (combine.o): Include insn-codes.h and insn-attr.h.
6538:
6539: * combine.c: Major rework to support many more simplifications in
6540: a more regular manner and support combining three insns into two.
6541: The most significant changes are the following:
6542: (subst): Remove simplifications involving ZERO_EXTRACT, SIGN_EXTRACT,
6543: ZERO_EXTEND, SIGN_EXTEND, AND, and shifts.
6544: Call new routines below; in the case of comparisons, handle call
6545: find_next_use if we need to change the comparison code or the
6546: particular MODE_CC mode required.
6547: No need to ever change ASHIFT to MULT here.
6548: (expand_compound_operation): New function to convert
6549: {ZERO,SIGN}_{EXTRACT,EXTEND} into the appropriate pair of shifts.
6550: (make_compound_operation): New function to make
6551: {ZERO,SIGN}_{EXTRACT,EXTEND} operations from shifts and ANDs.
6552: If we are on a machine (like a Vax) that has only arithmetic shifts,
6553: convert logical to arithmetic shifts when it doesn't matter
6554: which shift is used (simplify_shift_const canonicalizes to
6555: logical shifts).
6556: If inside an address, convert ASHIFT to MULT.
6557: (significant_bits): New function to determine which bits of
6558: a value are known to be zero.
6559: (simplify_and_const_int): Use significant_bits.
6560: Call expand_compound_operation when required.
6561: Handle AND of an ASHIFTRT with a constant.
6562: Don't make ZERO_{EXTEND,EXTRACT} here.
6563: (simplify_shift_const): New function to simplify a shift of an
6564: an object by a constant integer.
6565: (gen_lowpart_for_combine): When applied to a comparison operator,
6566: return comparison operator in requested mode.
6567: (simplify_set_cc0_and): Deleted.
6568: (try_combine): No longer call simplify_set_cc0_and.
6569: (reversible_comparison_p): New function.
6570: (simplify_comparison): New function.
6571:
6572: (combine_instructions): Allocate and initialize new vars
6573: reg_last_set_{table_tick,label,invalid}.
6574: (update_table_tick, record_value_for_reg): New functions.
6575: (get_last_value_validate, get_last_value): New functions.
6576: (record_dead_and_set_regs): Call record_value_for_reg.
6577:
6578: (find_split_point): New function to locate a place where a complex
6579: pattern can be split into two insns.
6580: (try_combine): If we are combining three insns and can't recognize the
6581: new pattern, try to split it.
6582: Call new functions below to update insn status.
6583: Return insn at which to continue scan.
6584: (adjacent_insns_p, add_links, remove_links): Deleted.
6585: (add_incs, add_no_conflicts, remove_death, move_deaths_2): Deleted.
6586: (move_deaths): Generalize to include movements in both directions.
6587: Update reg_first_use when we make an earlier use.
6588: (distribute_notes, distribute_links): New functions.
6589: (combine_instructions): No longer need check for LOG_LINKS
6590: pointing at a NOTE.
6591: Rescan from location indicated by try_combine, if any, when
6592: combining three insns.
6593: Update reg_first_use if we moved a use to a later insn.
6594:
6595: (try_distrib): Deleted.
6596: (apply_distributive_law): New function, contains code from old
6597: try_distrib.
6598: (subst): Call apply_distributive_law for applicable operations.
6599: Try to apply associative law.
6600: (combine_instructions): No longer call try_distrib.
6601: (dump_combine_stats, dump_combine_total_stats, combine_instructions):
6602: No longer count distributer statistics.
6603:
6604: (can_combine_p): New function to see if I2 or I1 is combinable.
6605: Be more precise about when we can combine insns involving cc0.
6606: Eliminate -fcombine-regs; always do it.
6607: (try_combine):
6608: Call can_combine_p to validate I2 and I1.
6609: If -fexpensive-optimizations, try to simplify I1 or I2.
6610: Handle (set (foo) (const_int 0)) followed by a STRICT_LOW_PART
6611: assignment to FOO as a ZERO_EXTEND.
6612: (subst): Quit very early if X is a root node (like PC0).
6613: Remove most canonicalizations done in first switch statement; now
6614: done elsewhere.
6615: Call simplify_{unary,binary,ternary}_operation.
6616: Add cases involving logical and arithmetic operations applied
6617: to comparison operators or values with only one significant bit.
6618: Add more cases involving ABS since comparisons returning values
6619: can be done with ABS.
6620: Avoid generating (const (const ...) ...).
6621: Convert (xmult (x_extend ...) ...) to a widening multiply.
6622:
6623: (gen_rtx_combine): New function to search for an operation in
6624: undobuf. Many callers to gen_rtx changed to call this function.
6625: (copy_substitutions): Only copy a substitution if it was placed into
6626: more than one location.
6627:
6628: Sun Mar 17 17:26:09 1991 Richard Stallman ([email protected])
6629:
6630: * c-common.c (shorten_compare): Warn for (unsigned char) == -1.
6631:
6632: * final.c (final_scan_insn): Set debug_insn before first output.
6633: (output_asm_insn): Clear it here.
6634:
6635: * expr.c (do_jump): Don't try to split non-integers.
6636:
6637: * fixincludes (dnetdb.h): Fix missing semi in nodeent.
6638: (rusers.h): Code to fix this file was duplicated.
6639:
6640: * toplev.c (decl_printable_name): Now given an extra arg.
6641: (decl_name): Accept that arg.
6642: (announce_function, report_error_function): Pass that arg.
6643: (error_with_decl, warning_with_decl): Likewise.
6644:
6645: * dbxout.c (getwd) [USG]: Define as macro.
6646:
6647: * c-decl.c (init_decl_processing): Indicate byte alignment for void.
6648:
6649: * expr.c (do_jump_by_parts_*): Compute nwords from compare arg.
6650: Pass 0 as size and alignment to compare_from_rtx.
6651: (do_jump_by_parts_greater): Compare high word first.
6652: Handle unsigned compares properly.
6653: Fix logic for dropping through versus failing.
6654:
6655: * expr.c (expand_builtin): Change cmpstrsi4 to cmpstrsi as in optabs.c.
6656:
6657: * c-common.c (truthvalue_conversion): Handle ptr vs int in MINUS_EXPR.
6658:
6659: Sun Mar 17 15:43:48 1991 Matthew Self ([email protected])
6660:
6661: Allow multiple return points in some framless functions (2/2/91):
6662:
6663: * m68k.md (return): New insn pattern for rts (and rtd).
6664:
6665: * tm-m68k.h (FUNCTION_PROLOGUE, FUNCTION_EPILOGUE,
6666: USE_RETURN_INSN): Call new functions to avoid giant macros
6667: which are hard to edit.
6668:
6669: * out-m68k.c (output_function_prologue,
6670: output_function_epilogue): New functions.
6671:
6672: * out-m68k.c (use_return_insn): New function. Determines
6673: whether the epilogue will consist of a single insn. Some
6674: code was duplicated from output_function_epilogue. There
6675: should be probably a new layout routine to do this common
6676: work. Also #include "flags.h".
6677:
6678: *out-m68k.c (output_function_epilogue): Don't output
6679: anything if the epilogue was output as RTL. We detect this
6680: by the barrier insn which is always placed after a return
6681: insn. This machine-independent test should probably be moved
6682: back into final.c and removed from out-sparc.c and out-m88k.c.
6683:
6684: * out-next.c: Don't #include "flags.h".
6685:
6686: Sun Mar 17 00:07:20 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6687:
6688: * genemit.c (gen_exp): Support constm1_rtx.
6689: * genrecog.c (add_to_sequence): Likewise.
6690:
6691: Sat Mar 16 17:26:58 1991 Richard Stallman ([email protected])
6692:
6693: * c-lang.c (maybe_building_objc_message_expr): New dummy function.
6694: * c-typeck.c (warn_for_assignment): Use it.
6695:
6696: * toplev.c (compile_file): Write out all static consts that are used.
6697:
6698: Sat Mar 16 14:08:12 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6699:
6700: * integrate.c (subst_constants): Don't replace registers in USE or
6701: CLOBBER expressions.
6702:
6703: * genattrtab.c (main): Properly set up a default DEFINE_ASM_ATTRIBUTES.
6704:
6705: * cse.c (cse_insn): Correctly check for a hash table element equal to
6706: the destination of a SET.
6707:
6708: Fri Mar 15 16:55:32 1991 Ron Guilmette (rfg at pepper.ncd.com)
6709:
6710: * Makefile.in (OBJS): Added dwarfout.o to list of things to be
6711: built.
6712:
6713: * Makefile.in (dwarfout.o): Added this rule.
6714:
6715: * dwarfout.c (FT_*_long_long): Added default definitions for all of
6716: these extended fundamental type codes to cater to plain vanilla
6717: <dwarf.h> file which do not define codes for these fundamental types.
6718:
6719: * dwarfout.c (TREE_UID): Added a local definition of this macro
6720: because gcc v2 no longer provides a definition for it and because
6721: dwarfout.c needs some way of getting a unique numeric code for each
6722: type.
6723:
6724: * dwarfout.c (CLASSTYPE_*): Added some local default definitions
6725: for these macros in order to get around the fact that they are
6726: currently defined only in cplus-tree.h (and rms wants dwarfout.c
6727: to be language independent).
6728:
6729: * dwarfout.c (BITFIELD_OFFSET_*): Added some local macros to help
6730: compute various quantities relating to bitfield offsets.
6731:
6732: * dwarfout.c (location_attribute): Changed code which outputs location
6733: attributes for bitfield so that it uses gcc2 macros.
6734:
6735: * dwarfout.c (byte_size_attribute): Changed code which outputs the
6736: byte_size attribute so that it no longer uses the obsolete
6737: DECL_SIZE_UNIT macro (from gcc1).
6738:
6739: * dwarfout.c: Replaced all uses of the obsolete macro TREE_PACKED
6740: to uses of the new gcc2 macro DECL_BIT_FIELD.
6741:
6742: * dwarfout.c (deriv_list_attribute): Fixed typo "decl" => "type".
6743:
6744: * dwarfout.c (output_dies_for_type): Replaced bogus reference to the
6745: non-existant routine "output_member_function_type_die" with a proper
6746: reference to the routine "output_subroutine_type_die".
6747:
6748: * dwarfout.c (output_symbols_for_block): Fixed calling error which
6749: was introduced by rms.
6750:
6751: * dwarfout.c: Replaced all uses of the obsolete macro STMT_SUBBLOCKS
6752: with uses of the new gcc2 macro BLOCK_SUBBLOCKS.
6753:
6754: * dwarfout.c (output_symbol): Removed reference to TAG_DECL. The
6755: use of TAG_DECLs was an early idea which didn't work out.
6756:
6757: * dwarfout.c: (dwarfout_init): Changed name from dwarfout_initialize
6758: because rms failed to do so when he changed the name in the call.
6759:
6760: Fri Mar 15 17:22:14 1991 Richard Stallman ([email protected])
6761:
6762: * c-decl.c (pushdecl): Add `%s' to some error messages.
6763:
6764: * sparc.md: Add extra assembler alternative in last change.
6765:
6766: * cse.c (simplify_unary_operation, simplify_binary_operation):
6767: Remove error checks that rejected SFmode.
6768:
6769: * expr.c (get_pointer_alignment): Don't lose on casts from integer
6770: to pointer.
6771:
6772: Fri Mar 15 07:57:19 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6773:
6774: * c-decl.c (pushdecl): Fix typo in previous change.
6775:
6776: * cse.c (simplify_{unary,binary}_operation): Fix usage of
6777: REAL_VALUE_FROM_CONST_DOUBLE in recent change.
6778:
6779: Thu Mar 14 18:56:53 1991 Richard Stallman ([email protected])
6780:
6781: * c-decl.c (pushdecl): Warn if mismatch with implicit decl.
6782:
6783: * final.c (final_start_function): Handle NON_SAVING_SETJMP.
6784: Include hard-reg-set.h.
6785: * function.c (setjmp_protect, setjmp_protect_args): Likewise.
6786: (expand_function_end): Call those if NON_SAVING_SETJMP.
6787:
6788: Thu Mar 14 14:40:45 1991 James Wilson (wilson at cygnus.com)
6789:
6790: * reload1.c (order_regs_for_reload): When REG_ALLOC_ORDER is defined,
6791: use that definition only to order regs, do not try to put call
6792: used regs first. This eliminates the benefits of defining the macro
6793: in the first place.
6794:
6795: * real.h: New macros for real arithmetic, REAL_VALUE_FIX_TRUNCATE,
6796: REAL_VALUE_UNSIGNED_FIX_TRUNCATE, REAL_VALUE_FIX,
6797: REAL_VALUE_UNSIGNED_FIX.
6798:
6799: * cse.c (simplify_unary_operation): Added code to simplify floating
6800: point rtx. Now simplifies UNSIGNED_FLOAT, ABS, FLOAT_TRUNCATE,
6801: FLOAT_EXTEND, FIX, and UNSIGNED_FIX. Add aborts to default case
6802: of switches.
6803: (simplify_binary_operation): Added code to simplify floating point
6804: rtx. Now simplifies PLUS, MINUS, MULT, and DIV. Add aborts to
6805: default case of switches.
6806: (*): Always use REAL_VALUE_TYPE and REAL_VALUE_FROM_CONST_DOUBLE
6807: when extracting a floating point number from a CONST_DOUBLE.
6808:
6809: Thu Mar 14 14:40:45 1991 Richard Stallman (rms at mole.ai.mit.edu)
6810:
6811: * expr.c (get_pointer_alignment): Update ALIGN for NOP_EXPR.
6812:
6813: * c-decl.c (builtin_function): New arg LIBRARY_NAME.
6814: (initialize_decl_processing): Pass that argument.
6815:
6816: * c-decl.c (grokdeclarator): Handle C_TYPE_FIELDS_VOLATILE.
6817: (finish_struct): Likewise.
6818: * c-tree.h (C_TYPE_FIELDS_VOLATILE): Define it.
6819:
6820: * Makefile.in (gnulib1, gnulib2.portable): Test $$? after compilation.
6821:
6822: * c-typeck.c (check_format): Discard multiple NOP_EXPR levels.
6823:
6824: * objc-actions.c (build_message_expr, build_selector_expr,
6825: build_encode_expr, get_class_ivars, start_class): Finding
6826: Objective-C code in c source files is now a fatal error.
6827: (They should recompile with -lang-objc.)
6828:
6829: * objc-actions.c (gen_method_decl): Don't crash for syntax
6830: error in method declaration: -bar: x, y
6831: (encode_array): Treat an undimensioned array the same as a pointer.
6832:
6833: Thu Mar 14 07:39:30 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6834:
6835: * reorg.c (try_merge_delay_insns): Previous fix had effect of
6836: disabling this function. Rework to take into account things
6837: needed, instead of set. This is still somewhat of a kludge.
6838:
6839: * recog.c (apply_change_group): An insn consisting of just a USE
6840: or CLOBBER is always valid, but recog_memoized returns a -1 for it.
6841:
6842: * genattrtab.c: Count all definitions as well as counting insns; use
6843: definition # in error message.
6844: Most functions that accepted insn_code now accept insn_index as well
6845: and similarly for structures containing insn_code.
6846:
6847: * reorg.c (try_merge_delay_insns): If not an annulling branch, take
6848: into account things set in the delay slot. This prevents merging
6849: two increments into one.
6850:
6851: * reorg.c (dbr_schedule): Fix typo in printing statistics.
6852:
6853: Thu Mar 14 02:11:56 1991 Richard Stallman (rms at mole.ai.mit.edu)
6854:
6855: * genemit.c, genoutput.c, genrecog.c: Count all definitions
6856: as well as counting insns; use # of definition in error messages.
6857:
6858: * toplev.c (pipe_closed, float_signal): Give it an explicit arg.
6859: * cplus-decl.c (sigsegv): Likewise.
6860: * cccp.c (pipe_closed): Likewise.
6861:
6862: * cccp.c: Delete trigraph from comment.
6863:
6864: * Makefile.in (realclean): Delete objc parser files.
6865:
6866: * assert.h (__assert for __GNUC__): Don't return value of abort.
6867:
6868: Wed Mar 13 16:12:54 1991 Richard Stallman (rms at churchy.ai.mit.edu)
6869:
6870: * expr.c (do_jump_by_parts_greater): Don't lose if labels are 0.
6871:
6872: * cplus-edsel.c: New name for cplus-cadillac.c.
6873: * Makefile.in (cplus-edsel.o): Fix the compilation rule.
6874:
6875: Wed Mar 13 06:47:53 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6876:
6877: * reorg.c (mark_set_resources): Any registers mentioned in REG_INC
6878: notes are set by an INSN.
6879:
6880: * flags.h (flag_expensive_optimizations): Add new flag.
6881: * toplev.c: Support -fexpensive-optimizations and turn on for -O2.
6882: * stmt.c (preserve_subexpressions_p): Use flag_expensive_optimizations
6883: instead of testing for -O2 explicitly.
6884:
6885: * expr.h (operand_subword): Add missing declaration.
6886:
6887: * reload1.c (eliminate_regs): Handle INSN_LIST (found in REG_NOTES).
6888:
6889: * tm-i386.h (RETURN_POPS_ARGS): Don't call aggregate_type_p with
6890: IDENTIFIER_NODE.
6891:
6892: Wed Mar 13 00:00:29 1991 Richard Stallman (rms at mole.ai.mit.edu)
6893:
6894: * optabs.c (expand_binop, expand_unop): If wordwise, make target non0.
6895:
6896: Tue Mar 12 15:24:09 1991 Richard Stallman (rms at mole.ai.mit.edu)
6897:
6898: * fixincludes: Quote the # in an echo.
6899: * fixincludes: Fix typos handling size_t and ptrdiff_t.
6900: * fixincludes (sys/file.h): Fix incorrect conditional in Ultrix.
6901:
6902: * c-typeck.c (initializer_constant_valid_p): Allow NON_LVALUE_EXPR.
6903: Return a tree that indicates the relocation.
6904: All callers changed.
6905:
6906: * jump.c (jump_optimize): Rerecognize jump insn after inverting it.
6907:
6908: * expr.c (do_jump):
6909: Use can_compare_p on the operand mode, not the comparison's mode.
6910:
6911: * reload.c (subst_reloads): Fix dumb error in last change.
6912:
6913: * expr.c (do_jump_by_parts_equality*): Fix logic errors.
6914:
6915: Mon Mar 11 14:27:40 1991 Richard Stallman (rms at mole.ai.mit.edu)
6916:
6917: * reload.c (subst_reloads): Don't make subregs, just new regs.
6918:
6919: * expr.c (do_jump_by_parts_equality, do_jump_by_parts_greater):
6920: (do_jump_for_compare, do_jump_by_parts_equality_rtx): New functions.
6921: (do_jump): Use them to handle wide values.
6922: * optabs.c (can_compare_p): New function.
6923:
6924: * reload1.c (emit_reload_insns): Don't make subreg around RELOADREG;
6925: just make a new REG.
6926:
6927: * cse.c, varasm.c: Fix typos.
6928:
6929: * sparc.md (move SI to reg_or_nonsymb_mem_operand):
6930: Separate third alternative into two alternatives.
6931: * tm-sparc.h (PREFERRED_RELOAD_CLASS): Return CLASS as given.
6932:
6933: * optabs.c (operand_subword): Fix typo.
6934:
6935: * longlong.h (__umulsidi3): Return .ll field.
6936:
6937: Mon Mar 11 11:43:21 1991 Jeffrey A. Law (law at mole.ai.mit.edu)
6938:
6939: * make-hp9k2bsd: New file.
6940: * configure (hp9k200-bsd): Use it.
6941:
6942: Mon Mar 11 07:08:12 1991 Michael Tiemann (tiemann at cygnus.com)
6943:
6944: * cplus-lex.c (check_newline): Clear TREE_INT_CST_HIGH once instead
6945: of clearing TREE_INT_CST_LOW twice.
6946:
6947: Mon Mar 11 06:51:52 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6948:
6949: * flow.c (mark_used_regs): If we are going to use a later
6950: register to auto-increment, make sure it really is a REG.
6951: In the case above, count any calls crossed by the new register.
6952:
6953: * global-alloc.c (global_conflicts): Mark registers modified by
6954: virtue of a REG_INC note as modified in the insn to make conflicts.
6955: (mark_reg_store): Accept SETTER value of 0.
6956:
6957: Sun Mar 10 16:56:25 1991 Richard Stallman (rms at mole.ai.mit.edu)
6958:
6959: * optabs.c (operand_subword): New function to get one word of operand.
6960: (expand_binop, expand_unop): Use it for word at a time case.
6961:
6962: * configure (a29-bsd*): Renamed from a29-sysv*.
6963:
6964: * expr.c (emit_library_call): Handle GNULIB_NEEDS_DOUBLE.
6965: * tm-i860.h (GNULIB_NEEDS_DOUBLE): Define it.
6966:
6967: * tm-harris.h (ASM_FILE_START): Output a .file.
6968:
6969: * reload1.c (constraint_accepts_reg_p): Understand reg classes.
6970:
6971: Sun Mar 10 06:58:20 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6972:
6973: * expr.c (move_by_pieces, move_by_pieces_ninsns, emit_push_insn):
6974: If SLOW_UNALIGNED_ACCESS is defined, respect alignment even if
6975: STRICT_ALIGNMENT is not defined.
6976: * tm-a29k.h (SLOW_UNALIGNED_ACCESS): Define this.
6977:
6978: Sun Mar 10 02:57:40 1991 Richard Stallman (rms at mole.ai.mit.edu)
6979:
6980: * cccp.c (handle_directive): If pass_thru and -C, print the
6981: input before removing comments from it.
6982:
6983: Sat Mar 9 21:18:48 1991 Torbjorn Granlund (tege at musta.nada.kth.se)
6984:
6985: * gnulib2.c (div_qrnnd, __umulsidi3, lowpart, highpart, B): Move
6986: to longlong.h.
6987: (udiv_qrnnd): New name of div_qrnnd. Rewrite to work correctly.
6988: (file header): Remove obsolete comment about internal format.
6989: (bits): Remove this function. count_leading_zeros in longlong.h
6990: is similar.
6991: (__udivdi3): Use count_leading_zeros instead of bits.
6992: (__udivdi3): Use umul_ppmm instead of __umulsidi3, as this makes
6993: better code.
6994:
6995: Sat Mar 9 18:02:47 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6996:
6997: * jump.c (jump_optimize): Avoid looking at PATTERN of NOTE
6998: or CODE_LABEL.
6999:
7000: * reload1.c (reg_is_output_reload, count_for_*groups): Use
7001: HARD_REG_SET instead of array to avoid bzero calls.
7002: (reload_reg_used*): Likewise.
7003:
7004: * emit-rtl.c (gen_rtx, init_emit_once): Pre-compute CONST_INTs
7005: from -64 to 64 to save space.
7006:
7007: Sat Mar 9 14:28:37 1991 Richard Stallman (rms at mole.ai.mit.edu)
7008:
7009: * reload1.c (choose_reload_regs): Fix typo in last change.
7010:
7011: Sat Mar 9 01:03:01 1991 Michael Tiemann (tiemann at cygnus.com)
7012:
7013: * cplus-decl.c (pushtag): Don't call `pushdecl' for nested type if
7014: the type is already defined.
7015:
7016: Fri Mar 8 17:24:20 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7017:
7018: * ns32k.md, vax.md (right shift patterns): When generating a right
7019: shift, use xSHIFTRT but use (neg x) as the shift count to
7020: more accurately represent what is supported by the machine.
7021:
7022: * expmed.c (emit_store_flag): Can't narrow result of scc insn before
7023: normalizing.
7024:
7025: Fri Mar 8 12:56:41 1991 Michael Tiemann (tiemann at cygnus.com)
7026:
7027: * cplus-class.c (pushclass): Set CURRENT_FUNCTION_DECL to
7028: appropriate value so that pushtag does the right thing for tags
7029: pushed into scope.
7030:
7031: Fri Mar 8 02:47:53 1991 Richard Stallman (rms at mole.ai.mit.edu)
7032:
7033: * gcc.c (delete_temp_files): Delete only ordinary files.
7034:
7035: * tree.c, cplus-tree.c (TYPE_HASH): 777777 was supposed to be octal.
7036:
7037: * reload1.c (choose_reload_regs): Properly ensure EQUIV
7038: is free and of the desired class.
7039: When a reload may be a group, mark all its regs in use.
7040:
7041: * reload.c (push_reload): Don't call reg_overlap_mentioned_p
7042: unless IN is a REG or MEM.
7043:
7044: * c-common.c, cplus-search.c, cplus-class.c (NULL):
7045: Undef before defining.
7046:
7047: * sdbout.c (sdbout_one_type): Don't temporarily clear KNOWN_TYPE_TAG.
7048:
7049: Thu Mar 7 10:53:32 1991 Tom Wood (wood at dg-rtp.dg.com
7050:
7051: * toplev.c (main): Add -dp: annotate the assembly with a comment
7052: describing the pattern and alternative used. Also, make -dm work
7053: for USG systems.
7054: * genoutput.c (output_epilogue): Output the array `insn_name'.
7055: * final.c (debug_insn, final_scan_insn): Record the value of the
7056: last insn processed by final_scan_insn.
7057: (output_asm_insn): Annotate the assembly output.
7058: (ASM_COMMENT_START): Provide a default value.
7059: * tm-att386.h, tm-bsd386.h, tm-sun386.h (ASM_COMMENT_START):
7060: Specify "/".
7061:
7062: Thu Mar 7 06:15:04 1991 Michael Tiemann (tiemann at cygnus.com)
7063:
7064: * cplus-class.c (propagate_basetype_offsets): Check ASSOC_TYPE in
7065: addition to return value from assoc value before aborting. ???
7066: should figure out why assocs are not shared.
7067:
7068: Wed Mar 6 16:29:37 1991 Richard Stallman (rms at mole.ai.mit.edu)
7069:
7070: * c-decl.c (NULL): Undef before defining.
7071:
7072: * cccp.c (do_include): Allocate file name permanently.
7073:
7074: Wed Mar 6 09:06:39 1991 Tom Wood (wood at dg-rtp.dg.com)
7075:
7076: * m88k.md (and/ashift): Added for the new combine.c (ashift/and
7077: works with the previous version).
7078: (bcnd insns): Use bcnd to test for sign and zero.
7079: (muldf3, divdf3): Use new method to deal with a power of two.
7080: (andsi3, iorsi3, xorsi3): Split into two insns for some constants.
7081: (call, call_value): Deal properly with a CONST_INT address.
7082: * out-m88k.c (call_address_operand): Don't allow CONST_INT.
7083: (uses_arg_area_p): New function for -moptimize-arg-area.
7084: * tm-m88k.h (TARGET_SWITCHES): Delete -mpic in favor of -fpic.
7085: Add -moptimize-arg-area and -mno-optimize-arg-area.
7086:
7087: Wed Mar 6 00:07:09 1991 Richard Stallman (rms at mole.ai.mit.edu)
7088:
7089: * real.h (REAL_VALUE_FROM_CONST_DOUBLE): Takes input and output args.
7090: * integrate.c (copy_for_inline, copy_rtx_and_substitute):
7091: (restore_constants): Calls changed.
7092:
7093: Tue Mar 5 23:06:36 1991 Richard Stallman (rms at mole.ai.mit.edu)
7094:
7095: * stmt.c (fixup_gotos): Handle jumping to end of rtl.
7096:
7097: * c-decl.c (store_parm_decls): If -traditional,
7098: allow unsigned int in prototype in place of int.
7099:
7100: * cplus-cadillac.c: Delete all but the stubs.
7101:
7102: Tue Mar 5 16:59:18 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7103:
7104: * jump.c (jump_optimize): Handle case of only NOTE insns after
7105: NOTE_INSN_LOOP_BEG.
7106: (duplicate_loop_exit_test): Return 0 when we hit a block
7107: start or end, rather than quitting loop and getting confused.
7108:
7109: * integrate.c (subst_constants): Correctly move constants to
7110: second operand of commutative operations.
7111:
7112: * jump.c (comparison_code_p): Deleted.
7113: * combine.c (subst): Use GET_RTX_CLASS instead of comparison_code_p.
7114: * cse.c (find_comparison_args): Likewise.
7115: * recog.c (comparison_operator): Likewise.
7116: * loop.c (get_condition): Likewise.
7117:
7118: Tue Mar 5 14:21:57 1991 Richard Stallman (rms at mole.ai.mit.edu)
7119:
7120: * cse.c (fold_rtx): When checking for constant pool addresses,
7121: handle addresses constructed from LO_SUM.
7122:
7123: * recog.c (constrain_operands): If before reload, `m' and `o'
7124: accept all that could be reloaded to fit those constraints.
7125:
7126: * reload1.c (gen_input_reload): Return the first insn emitted by
7127: this function, instead of the last insn emitted.
7128:
7129: * stmt.c (expand_end_loop): When move exit test to loop bottom,
7130: also move a preceeding NOTE_INSN_LOOP_CONT note if it exists.
7131:
7132: * gcc.c (process_command): Check for running out of args after option.
7133:
7134: * out-mips.c, out-romp.c: Test BYTES_BIG_ENDIAN with #if.
7135: * tm-i860.h (*_BIG_ENDIAN): Define as 0.
7136: * tm-mips-news.h (BYTES_BIG_ENDIAN, WORDS_BIG_ENDIAN): Deleted.
7137: (DECSTATION): Deleted.
7138:
7139: * tm-mips.h: Test WORDS_BIG_ENDIAN with #if.
7140:
7141: * tm-mips.h, tm-sparc.h, tm-spur.h (CONST_DOUBLE_OK_FOR_LETTER_P):
7142: Use CONST_DOUBLE_LOW and CONST_DOUBLE_HIGH.
7143:
7144: * real.h: dconst0, dconst1, dconstm1 are declared twice.
7145: Eliminate the second redundant declaration.
7146:
7147: * cse.c (FIXED_REGNO_P): Exclude OVERLAPPING_REGNO_P registers.
7148:
7149: * cccp.c (path_include): Handle empty names in path.
7150:
7151: * final.c: Use gvarargs.h, not varargs.h
7152:
7153: * configure (i860, i860-bsd): Handle +gas.
7154: * tm-i860g.h, tm-i860bsdg.h: New files.
7155:
7156: Mon Mar 4 22:41:36 1991 Richard Stallman (rms at mole.ai.mit.edu)
7157:
7158: * cse.c (simplify_unary_operation): When making a real const, use MODE.
7159:
7160: Mon Mar 4 21:35:47 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7161:
7162: * cse.c (cse_end_of_basic_block): Correctly handle case where
7163: we find a "new" branch to follow.
7164: (cse_end_of_basic_block, cse_main, cse_basic_block): PATH_SIZE
7165: is now actual size, not size - 1.
7166:
7167: Mon Mar 4 06:44:27 1991 Michael Tiemann (tiemann at cygnus.com)
7168:
7169: * cplus-decl.c (poplevel): Change test for whether to clobber the
7170: DECL_CONTEXT of local variables. Now we won't clobber context for
7171: any nested types.
7172:
7173: Mon Mar 4 00:39:11 1991 Richard Stallman (rms at mole.ai.mit.edu)
7174:
7175: * jump.c (jump_optimize): When deleting x=y after y=x,
7176: don't delete more than one death note, and don't delete any
7177: unless we really do delete x=y.
7178:
7179: * cccp.c (main): Support -lang-objc++.
7180: Eliminate compilation parameter CPLUSPLUS.
7181:
7182: * cccp.c (main): Handle leading or trailing space in `predefs'.
7183:
7184: * fixincludes: Fix typos handling size_t and ptrdiff_t.
7185:
7186: Sun Mar 3 16:41:24 1991 Richard Stallman (rms at mole.ai.mit.edu)
7187:
7188: * cccp.c (main): Handle multiple spaces, and tabs, in `predefs'.
7189: * gcc.c (do_spec_1): Allow extra whitespace in CPP_PREDEFINES.
7190: Also transform -Dfoo=bar into -D__foo__=bar correctly.
7191:
7192: * varasm.c (assemble_zeros): Use ASM_BYTE if defined.
7193:
7194: * reload1.c (reload): Only special-case a spill reg alone in a class
7195: if there is non-group need for that class. Be careful not to count
7196: a reg in the usual place if it was counted in the special case.
7197:
7198: * reload1.c (order_regs_for_reload): Make fixed regs and
7199: eliminable regs twice as bad as explicitly mentioned regs.
7200:
7201: * reload1.c (choose_reload_regs): Fix typos in last change.
7202:
7203: * c-decl.c (init_decl_processing):
7204: Return type of memcpy varies if -traditional.
7205: (ptr_ftype_ptr_cptr_sizet): Global var deleted.
7206:
7207: * reload1.c (emit_reload_insns): When updating reg_reloaded_contents,
7208: first always clear, then maybe store nonzero value.
7209:
7210: Sun Mar 3 16:12:17 1991 Ken Raeburn (raeburn at watch.com)
7211:
7212: * cplus-template.c (mangle_class_name_for_template): Add two
7213: leading underscores, to avoid conflicts with programmer's names.
7214:
7215: * cplus-tree.h (struct lang_identifier): New field `template'
7216: points to template info from which this identifier was
7217: constructed.
7218:
7219: * cplus-template.c (current_template_expansion,
7220: current_template_name): Variables deleted.
7221:
7222: * cplus-template.c (lookup_template_class): Top half of old
7223: instantiate_template; returns the id_node.
7224: (instantiate_template): Takes the id_node as argument now.
7225: * cplus-parse.y (template rules): Use separate rule for checking
7226: whether expansion is required. For base classes, always try it;
7227: else do it only if `{' is not next token.
7228: (template_type_name): New nonterminal for template class name
7229: without expansion.
7230: (template_type): Includes expansion, if needed.
7231:
7232: * cplus-input.c (input_from_saved_text): Deleted.
7233: * cplus-template.c (instantiate_template): Call feed_input directly.
7234:
7235: * cplus-parse.y (base_class_visibility_list): Now type <itype>,
7236: cast to tree in base_class action.
7237:
7238: Sun Mar 3 07:46:55 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7239:
7240: * expr.c (do_store_flag): Consider A & single-bit as cheap.
7241:
7242: * fold-const.c (operand_equal_p): If ARG0 and ARG1 are the same
7243: SAVE_EXPR, they are equal.
7244:
7245: * function.c (fixup_var_refs_1): Move mispositioned code in
7246: (set (zero_extract ...) ...) case; fix incorrect indentation.
7247:
7248: Sun Mar 3 01:11:46 1991 Richard Stallman (rms at mole.ai.mit.edu)
7249:
7250: * cccp.c (include_defaults, cplusplus_include_defaults):
7251: Use STANDARD_INCLUDE_DIR.
7252: (STANDARD_INCLUDE_DIR): Define by default as /use/include.
7253: * tm-mips.h (STANDARD_INCLUDE_DIR): Define, if MIPS_BSD43.
7254: (CPP_SPEC): Don't do -I to handle -ZSYSV, -ZBSD43.
7255:
7256: Sat Mar 2 17:20:57 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7257:
7258: * expr.c (expand_expr, case COND_EXPR): Remove unneeded calls to
7259: safe_from_p in A ? A : FOO cases.
7260:
7261: Sat Mar 2 16:14:24 1991 Richard Stallman (rms at mole.ai.mit.edu)
7262:
7263: * reload1.c (choose_reload_regs): Support subreg as reload_override_in.
7264: Likewise reload_reg_rtx. Just don't use REGNO on them.
7265: (emit_reload_insns): Handle subreg as OLDEQUIV.
7266:
7267: * reload1.c (delete_output_reload): Pass the output reload insn,
7268: not a spill reg index. Call in emit_reload_insns changed.
7269: (emit_reload_insns): Don't actually update spill_reg_store
7270: till after all reload insns have been made.
7271:
7272: * reload.c (push_reload): If existing reload has a reload reg,
7273: make sure it fits the class of this reload.
7274:
7275: * stmt.c (fixup_gotos): Fix typo in last change.
7276:
7277: * reload1.c (choose_reload_regs): Don't use equiv reg
7278: that is clobbered in this insn.
7279:
7280: Sat Mar 2 12:19:19 1991 Michael Tiemann (tiemann at cygnus.com)
7281:
7282: * cplus-dem.c (optable): Add op for `operator,'.
7283:
7284: * toplev.c (main): Clear WARN_INLINE if FLAG_NO_INLINE is nonzero.
7285:
7286: * cplus-typeck.c (c_expand_return): Perform conversion to reference
7287: in time that we can warn about the return of more non-lvalues.
7288: Also, fix what appeared to be bugs in the code dealing with
7289: WHATS_RETURNED.
7290:
7291: Sat Mar 2 00:11:18 1991 Ken Raeburn (raeburn at watch.com)
7292:
7293: * cplus-parse.y (base_class): Base class may be a template class.
7294: Split off non-visibility portion into base_class.1.
7295:
7296: * cplus-parse.y: Replaced PUBLIC, PRIVATE, PROTECTED with a single
7297: terminal VISSPEC, with <itype> value, to simplify parser slightly.
7298: * cplus-parse.h (enum rid): Added values for VISSPEC terminal.
7299: * cplus-lex.c (is_reserved_word): Changed token types to VISSPEC,
7300: rid values as appropriate.
7301: (yylex): For VISSPEC, set itype value rather than ttype.
7302:
7303: Fri Mar 1 21:50:23 1991 Ken Raeburn (raeburn at watch.com)
7304:
7305: * cplus-parse.y (.set_base_init): Discarded `preserve' code, which
7306: was doing nothing.
7307:
7308: Fri Mar 1 19:01:25 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7309:
7310: * reorg.c (redundant_insn_p): Rename second arg to TARGET.
7311: Handle the case where TARGET is a SEQUENCE.
7312: (mark_target_live_regs): Don't get confused by registers conditionally
7313: set in a JUMP_INSN when looking for regs set before used.
7314:
7315: Thu Feb 28 17:25:59 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7316:
7317: * loop.c (check_dbra_loop): Replace code that thinks it knows
7318: exactly what the RTL looks like (and gets it wrong) with call
7319: to get_condition_for_loop.
7320:
7321: Thu Feb 28 16:35:21 1991 Richard Stallman (rms at mole.ai.mit.edu)
7322:
7323: * c-typeck.c (build_compound_expr): Convert array to pointer.
7324:
7325: Wed Feb 27 15:46:54 1991 Richard Stallman (rms at mole.ai.mit.edu)
7326:
7327: * gnulib1.c (FLOAT_ARG_TYPE, FLOATIFY): New macros.
7328: (__*sf*): Use them for `float' args.
7329:
7330: * stmt.c (expand_end_case):
7331: Test value of HAVE_casesi and HAVE_tablejump at runtime.
7332:
7333: * stmt.c (fixup_gotos): Check that jump into bindings
7334: really comes from before the start of the bindings.
7335: Use TREE_REGDECL to indicate error message printed.
7336:
7337: Wed Feb 27 15:01:51 1991 Ken Raeburn (raeburn at watch.com)
7338:
7339: * cplus-template.c (end_template_decl): Store correct name in new
7340: decl. Use pushdecl, not pushtag.
7341: (instantiate_template): Use identifier's global value, not its
7342: type. Pass back both template and new class in token value.
7343: * cplus-lex.c (identifier_type): Templates now have type
7344: TEMPLATE_DECL, not TYPE_DECL wrapped around a TEMPLATE_DECL.
7345:
7346: Wed Feb 27 06:27:45 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7347:
7348: * loop.c (replace_regs): Don't make nested SUBREGs.
7349:
7350: * reload.c (push_reload): SUBREG_LOC applies only to INLOC, not OUTLOC.
7351:
7352: * cse.c (simplify_binary_operation): Simplify A&A, A|A, and A^A.
7353:
7354: * reload.c (find_reloads_address_1): Correctly handle (post_inc (mem)).
7355:
7356: Tue Feb 26 21:49:15 1991 Richard Stallman (rms at mole.ai.mit.edu)
7357:
7358: * expmed.c (store_bit_field, extract_bit_field): Calls to
7359: get_best_mode were passing alignment in bytes rather than
7360: alignment in bits.
7361:
7362: * flags.h (flag_pedantic_errors): Declare it.
7363:
7364: * c-tree.h (C_TYPEDEF_EXPLICITLY_SIGNED): New flag.
7365: * c-decl.c (grokdeclarator): Record that flag in new typedefs.
7366: Check it when determining signedness of bitfields.
7367:
7368: * expr.c (expand_expr): In A ? A : B, make output safe from A and B.
7369:
7370: * reload.c (find_reloads_address, find_reloads_address_1):
7371: Reload any reg that appears in a clobber in the same insn.
7372: (regno_clobbered_p): New function.
7373:
7374: Tue Feb 26 21:41:43 1991 Michael Tiemann (tiemann at cygnus.com)
7375:
7376: * expr.c (expand_expr): Add missing arg to exapnd_exit_loop in
7377: EXIT_EXPR case.
7378:
7379: Tue Feb 26 14:35:47 1991 Richard Stallman (rms at mole.ai.mit.edu)
7380:
7381: * c-decl.c (grokdeclarator): Check pedantic error last.
7382:
7383: * tm-i386.h (STRUCT_VALUE, STRUCT_VALUE_INCOMING): Value is 0.
7384: (RETURN_POPS_ARGS): Pop the structure return pointer here.
7385: * out-i386.c (function_epilogue):
7386: current_function_pops_args says how many args to pop.
7387:
7388: * tm-i386.h (CC_Z_IN_NOT_C): New cc flag.
7389: * i386.md (je and jne patterns): Handle this flag.
7390: (pattern using bt insns): Set the flag.
7391: Output test insn instead if bit number is constant.
7392: (insv): Changed constraint.
7393:
7394: * tm-i386.h (enum reg_class): Define ABCI_REGS.
7395: (REG_CLASS_NAMES, REG_CLASS_CONTENTS): Support ABCI_REGS.
7396: Fix the contents for ABC_REGS.
7397: (REG_CLASS_FROM_LETTER): Define `x' for ABCI_REGS.
7398: * i386.md (divsi3, udivsi3): Use `xm' for operand 2 constraint.
7399: (divhi3, udivhi3, divmod*, udivmod*): Likewise.
7400:
7401: * cccp.c (pedwarn): Declare as void.
7402:
7403: Tue Feb 26 06:41:34 1991 Michael Tiemann (tiemann at cygnus.com)
7404:
7405: * tree.h (IDENTIFIER_VIRTUAL_P): New macro for IDENTIFIER_NODE.
7406: Nonzero means that this identifier is used by a function declared
7407: virtual.
7408: * cplus-decl.c (grokfndecl): Set IDENTIFIER_VIRTUAL_P instead of
7409: DECL_VIRTUAL_P.
7410: * cplus-search.c (get_first_matching_virtual): Test
7411: IDENTIFIER_VIRTUAL_P instead of DECL_VIRTUAL_P.
7412:
7413: * cplus-decl.c (pushtag): Handle classes which are nested in
7414: function scope (as opposed to class scope).
7415: (lookup_nested_type): Ditto.
7416: * cplus-method.c (build_overload_nested_name): Ditto.
7417:
7418: * cplus-decl.c (grokdeclarator): Only globalize non-nested classes
7419: declared in class scope (i.e., don't globalize in function scope).
7420:
7421: Tue Feb 26 06:11:37 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7422:
7423: * a29k.md (storem): Fix typo in operand number.
7424:
7425: * expr.c (do_store_flag): Add missing cast required for some compilers.
7426:
7427: * tm-a29k.h (REG_CLASS_*, REGNO_REG_CLASS): Add new class Q_REGS
7428: and constraint letter `q' for the Q register. Requested by tege.
7429:
7430: * tm-a29k.h (PRINT_OPERAND_ADDRESS): Allow short constant as address.
7431:
7432: Mon Feb 25 20:46:43 1991 Richard Stallman (rms at mole.ai.mit.edu)
7433:
7434: * expr.c (expand_expr): In handling A : A ? FOO, use safe_from_p
7435: against FOO. Fix many incorrect operand refs in A : FOO ? A.
7436:
7437: * sdbout.c (plain_type_1): Record type name only if using forward refs.
7438:
7439: * reload.c (find_reloads): Mark those RELOAD_OTHER reloads
7440: that are used for output addresses, for choose_reload_regs.
7441:
7442: * integrate.c (copy_rtx_and_substitute):
7443: Copy REG_USERVAR_P from original regs to new regs.
7444:
7445: * c-typeck.c (digest_init): Handle STRING_CST before same-type case.
7446:
7447: Mon Feb 25 13:31:51 1991 Michael Tiemann (tiemann at cygnus.com)
7448:
7449: * cplus-decl.c (grokdeclarator): Handle the identification of
7450: constructors declared in nested scope.
7451:
7452: Mon Feb 25 06:27:28 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7453:
7454: * reorg.c (next_insn_no_annul): New function.
7455: (mark_set_resources, mark_target_live_regs): Don't count insns from
7456: the target of a branch if the branch is annulling.
7457:
7458: * expmed.c (emit_store_flag): Get new register for target if
7459: preserve_subexpressions_p returns nonzero.
7460: Convert to desired mode, then normalize, instead of doing it
7461: the other way around; this allows better combining.
7462:
7463: Sun Feb 24 20:07:02 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7464:
7465: * cse.c (find_comparison_args): Fix indentation and misplaced paren.
7466:
7467: * Makefile.in (install-headers): Remove extraneous parens from
7468: uses of shelllibsubdir.
7469:
7470: Sun Feb 24 15:49:42 1991 Richard Stallman (rms at mole.ai.mit.edu)
7471:
7472: * loop.c (check_dbra_loop): Win if loop biv is used only for counting.
7473:
7474: * cccp.c (struct definition): Record file and line.
7475: (create_definition): Store that information.
7476: (do_define): Identify location of previous definition.
7477: (pedwarn_with_file_and_line): New function.
7478:
7479: Sat Feb 23 13:36:13 1991 Richard Stallman (rms at mole.ai.mit.edu)
7480:
7481: * c-decl.c (grokdeclarator): Error for `signed void', etc.
7482: Warning for `signed my_int', and only if pedantic.
7483:
7484: * toplev.c (warn_cast_align): New flag, with -W option.
7485: * c-typeck.c (build_c_cast): Warn if target alignment increases.
7486:
7487: Sat Feb 23 10:22:03 1991 Michael Tiemann (tiemann at cygnus.com)
7488:
7489: * cplus-type2.c (store_init_value): Global variables must be
7490: specially initialized in PIC under SunOS.
7491:
7492: * cplus-dbxout.c (dbxout_tags): Test that the tag's value has not
7493: been cleared before trying to use it as a type. This happens when a
7494: class starts out looking like a nested class, but turns out to be a
7495: reference to an implicitly defined global class.
7496:
7497: Sat Feb 23 06:16:44 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7498:
7499: * jump.c (true_regnum): If given a pseudo not assigned a hard reg,
7500: return the pseudo register number.
7501:
7502: * out-rs6000.c (update_cc): Remove CC_REVERSE and CC_NONNEG.
7503: * rs6000.md (define_attr "cc"): Remove reverse.
7504: (cmpsi): Only allow second arg to be a constant.
7505: Remove some unneeded comparison patterns.
7506:
7507: * rs6000.md (misc logical patterns): Only add CLOBBER for MQ
7508: when we really clobber it; we used to do so in more cases to
7509: work around a since-fixed restriction in combine.c
7510:
7511: * rs6000.md (extend*): Use DEFINE_EXPAND instead of a pattern
7512: that generates two insns. Remove (sign_extend (ashift ..) ...)
7513: and similar patterns; no longer neeed.
7514:
7515: * rs6000.md (fma instruction): Add missing single-precision case.
7516:
7517: * out-rs6000.c (print_operand, case 's' and 'S'): Truncate to low-order
7518: 5 bits.
7519:
7520: * out-rs6000.c (output_prolog, output_epilog): Correct code to handle
7521: large stack frames; used 65535 instead of 32767 and had a typo.
7522:
7523: * tm-romp.h (CC_IN_NOT_TB): Deleted.
7524: * out-romp.c (update_cc): No longer need CC_REVERSE, CC_NONNEG, or
7525: CC_NOTTBIT.
7526: (print_operand): Remove use of CC_IN_NOT_TB.
7527: * romp.md (define_attr "cc"): Remove reverse,nonneg, and nottbit.
7528: (mttbi): Remove redundant pattern.
7529: (cmpsi): First arg can only be register_operand.
7530: Remove some unneeded COMPARE patterns.
7531:
7532: * romp.md (movhi): Use zero-extend, not sign-extend load.
7533:
7534: * out-romp.c: (float_conversion): Allow CONST_INT as operand.
7535:
7536: * out-romp.c (first_reg_to_save): Ensure we save r14 if we use it.
7537:
7538: * a29k.md (divsf3): Fix typo in name; was divds3.
7539:
7540: * tm-a29k.h: Add new -mno-storem-bug and TARGET_NO_STOREM_BUG.
7541: (TARGET_SWITCHES): -m29050 turns on -mno-storem-bug.
7542: * a29k.md: (store_multiple_bug): New pattern to work around chip bug.
7543: (store_multiple_no_bug): New name for original pattern.
7544: (store_multiple): Choose depending on TARGET_NO_STOREM_BUG.
7545: (storem patterns): Two cases, with and without bug.
7546:
7547: * a29k.md (extend*): Don't define single insn for sign_extend.
7548: Instead, use DEFINE_EXPAND. Delete DEFINE_SPLITs for the old patterns.
7549:
7550: * a29k.md (jumpfdec pattern): Fix typo.
7551:
7552: * tm-a29k.h, tm-romp.h, tm-rs6000.h (CC1_SPEC): Remove optimization
7553: selections.
7554: (OPTIMIZATION_OPTIONS): Turn off insn scheduling by default until
7555: it is fixed.
7556:
7557: * tm-a29k.h, tm-romp.h, tm-rs6000.h (SETUP_INCOMING_VARARGS):
7558: Correctly handle the case of the special argument being other than
7559: the first arg.
7560:
7561: * tm-a29k.h (GO_IF_LEGITIMATE_ADDRESS): A tiny constant (< 255)
7562: is also a valid address.
7563:
7564: * tm-a29k.h, tm-romp.h, tm-rs6000.h (BYTE_LOADS_ZERO_EXTEND): Add to
7565: support combine.c in development.
7566:
7567: * jump.c (jump_optimize, can_reverse_comparison_p, delete_jump):
7568: Consistently allow NOTEs between the set and use of CC0.
7569: * reorg.c (delete_scheduled_jump): Likewise.
7570:
7571: * expmed.c (emit_store_flag): Pass in UNSIGNEDP; can't derive it from
7572: comparison code.
7573: * expr.c (do_store_flag): Add UNSIGNEDP arg to emit_store_flag call.
7574: * jump.c (jump_optimize): Likewise.
7575: * optabs.c (expand_binop): Likewise.
7576:
7577: * local-alloc.c (requires_inout_p): New function.
7578: (block_alloc): Use high-priority preferences if we have a hard
7579: register used in an insn that requires the same register for
7580: input as for the output.
7581: (combine_regs): Rename argument COPY to MAY_SAVE_COPY.
7582:
7583: * cse.c (simplify_binary_operation, case MULT): Convert multiply
7584: by power of two to shift.
7585: (cse_insn): Don't share rtx obtained from the hash table; copy it.
7586:
7587: Sat Feb 23 00:27:26 1991 Richard Stallman (rms at mole.ai.mit.edu)
7588:
7589: * rtlanal.c (dead_or_set_p): Don't check for REG_INC.
7590:
7591: * reload.c (push_reload): (subreg:m1 (reg:m2 ...) ...) with M1 wider
7592: than M2 is also a paradoxical SUBREG.
7593:
7594: Fri Feb 22 14:43:44 1991 Richard Stallman (rms at mole.ai.mit.edu)
7595:
7596: * reload1.c (possible_group_p): Add missing forward declaration.
7597:
7598: * reload1.c (eliminate_regs, case PLUS): Ensure we handle the
7599: case of (plus reg1 reg2) where REG1 is eliminable and REG2 is
7600: psuedo that didn't get a hard reg and has reg_equiv_constant nonzero.
7601: (choose_reload_regs): If reload_needed_for_multiple,
7602: the reload can't be input-only or output-only.
7603: (emit_reload_regs): Avoid regno_dead_p.
7604: * combine.c (regno_dead_p): Function deleted.
7605:
7606: * Makefile.in (maketest): Finish renaming config to configure.
7607:
7608: * gcc.c (lookup_compiler): Create a new entry to represent
7609: the result of searching for an alias entry.
7610:
7611: * reload.c (combine_reloads): Swap args to reg_overlap_mentioned_p.
7612:
7613: Fri Feb 22 09:40:50 1991 Michael Tiemann (tiemann at cygnus.com)
7614:
7615: * cplus-parse.y (base_class_list): Re-fix precedence so we can use MI.
7616:
7617: * cplus-except.c (init_exception_processing): Push exception ctors
7618: and dtors into scope so they can be inlined.
7619:
7620: Fri Feb 22 08:03:47 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7621:
7622: * genemit.c (output_init_mov_optab): New function.
7623: (main): Have insn-emit.c include insn-codes.h.
7624: Call output_init_mov_optab.
7625: * optabs.c (gen_move_insn): Handle moving MODE_CC modes; we may have
7626: to find a different mode to do this in.
7627: (init_optabs): Try to initialize CCmode in mov_optab; if we have
7628: EXTRA_CC_MODES, call init_mov_optab.
7629: * Makefile.in (insn-emit.o): Now depends on insn-codes.h.
7630:
7631: * rtl.h (get_last_insn_anywhere): Add missing declaration.
7632:
7633: * stmt.c: Now includes hard-reg-set.h (for n_non_fixed_regs).
7634: (preserve_subexpressions_p): Renamed from inside_loop.
7635: Always return true if optimize >= 2; always return false if
7636: optimize == 0. If optimize == 1, only return true if we aren't
7637: very far into a loop instead of whenever we are in any loop.
7638: * Makefile.in (stmt.o): Now includes hard-reg-set.h.
7639: * expr.c (expand_expr): Use preserve_subexpressions_p instead of
7640: inside_loop.
7641: Only set TARGET to SUBTARGET if TARGET isn't a pseudo register.
7642: (expand_expr, case REAL_CST): Don't call force_reg; now done in
7643: expand_binop, if required.
7644: * optabs.c (expand_binop, expand_twoval_binop, emit_cmp_insn):
7645: If arg is expensive constant and preserve_subexpressions_p is true,
7646: force it into a register.
7647: * out-sparc.c (emit_move_sequence): Call preserve_subexpressions_p
7648: instead of inside_loop.
7649:
7650: * reload1.c (eliminate_regs, case SUBREG): Correct test for paradoxical
7651: SUBREG.
7652:
7653: * varasm.c (output_constant_pool): If entry refers to a deleted label,
7654: write a zero instead of the undefined label.
7655:
7656: Fri Feb 22 02:49:24 1991 Ken Raeburn (raeburn at watch.com)
7657:
7658: * Reversed all changes dated 20 February.
7659: * cplus-template.c (pending_template_expansion): New function;
7660: given template name, returns class name of expansion in progress.
7661: * cplus-parse.y (PTYPENAME -> typespec): Call it.
7662: ('~' PTYPENAME -> notype_declarator): Ditto.
7663:
7664: Thu Feb 21 15:17:13 1991 Craig Burley (burley at geech.ai.mit.edu)
7665:
7666: * c-common.c (check_case_value): If value is NULL_TREE, return it
7667: without any further checking.
7668:
7669: * stmt.c (pushcase_range): If value1 is NULL_TREE, substitute
7670: minimum value for the type, if value2 is NULL_TREE, substitute
7671: maximum value for the type, from then on assume both are not NULL_TREE.
7672: These changes appear to provide minimal support for case ranges.
7673:
7674: * c-typeck.c (digest_init): For explicit array element initializer
7675: case, change check against max value of domain so index may equal it.
7676: For array element initialization, give next initializer a chance to
7677: override the choice of next index before falling out of loop because
7678: next index is out of range. For structure initialization, give next
7679: initializer a similar chance before falling out of loop because no
7680: more fields exist.
7681:
7682: * reload1.c (possible_group_p): Needed a forward decl (static).
7683:
7684: Thu Feb 21 14:37:01 1991 Richard Stallman (rms at mole.ai.mit.edu)
7685:
7686: * c-decl.c (grokdeclarator):
7687: Don't make bitfield type unsigned if comes from typedef.
7688:
7689: * reload1.c (reload): Don't require INITIAL_FRAME_POINTER_OFFSET
7690: if cannot eliminate the frame pointer.
7691:
7692: * i860.md (cbranch, inverse_cbranch): Use eq to test cc0.
7693: (negated branch patterns): New patterns.
7694:
7695: * tm-i860.h (INITIALIZE_TRAMPOLINE): Use size_int, not build_int.
7696:
7697: * reload1.c (reload): Save and restore notes around find_reloads.
7698:
7699: * tm-sun2os4.h (LINK_SPEC): New macro.
7700: * tm-sun386i.h (LINK_SPEC): Undef before redefining.
7701:
7702: * cccp.c (do_include): Check for -2, not -1, as value of lookup_import.
7703:
7704: * c-parse.y (initlist): Fix typo.
7705:
7706: Mon Feb 18 02:50:38 1991 Michael Tiemann (tiemann at cygnus.com)
7707:
7708: * cplus-decl.c (grokdeclarator): Try to come up with better magic
7709: for implicitly globalizing classes implicitly declared in class
7710: scope.
7711:
7712: Sun Feb 17 09:27:38 1991 Michael Tiemann (tiemann at cygnus.com)
7713:
7714: * cplus-tree.c (virtual_offset): New function. Returns the offset
7715: of a baseclass that is virtual or comes from a virtual baseclass, or
7716: NULL if there is no such baseclass.
7717: * cplus-class.c (modify_vtable_entries): Call this function instead
7718: of `virtual_member'. `virtual_member' can return the wrong thing if
7719: we try to use it for an offset computation of a baseclass which is
7720: not strictly a virtual baseclass.
7721:
7722: Sat Feb 16 06:21:03 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7723:
7724: * recog.c (validate_replace_rtx_1): Use correct rtx_code for the
7725: new operation when commuting operands.
7726: Generalize to commute operands on comparison operation.
7727:
7728: Fri Feb 15 23:01:24 1991 Richard Stallman (rms at geech.ai.mit.edu)
7729:
7730: * c-parse.y (initlist): Finish changing `case N:' to `[N]'.
7731:
7732: * combine.c (try_combine): Update reg_first_use. Flush useless links.
7733:
7734: Thu Feb 14 17:06:44 1991 Ken Raeburn (raeburn at watch.com)
7735:
7736: * cplus-parse.y (template_parm): New derivation from `class ID',
7737: for consistent return of `identifier_node' nodes with `class A :
7738: B' case.
7739: * cplus-template (end_template_parm_list): Nothing to strip off of
7740: identifier_nodes now.
7741: (process_template_parm): Strip off one level of tree_list,
7742: discarding (for now) the required base class. Don't need to run
7743: through grok* any more.
7744:
7745: Sun Feb 10 19:23:21 1991 Richard Stallman (rms at mole.ai.mit.edu)
7746:
7747: * gcc.c (main, process_command, default_compilers): Fix typos.
7748:
7749: Sat Feb 9 15:06:43 1991 Richard Stallman (rms at mole.ai.mit.edu)
7750:
7751: * gcc.c (process_command): Handle separate args for -B, -b, -V.
7752:
7753: * gcc.c (lookup_compiler): New function. Handles alias entries.
7754: (main): Call that.
7755: (default_compilers): Make all real suffixes into alias entries.
7756: (infiles): Now a vector of structures, containing specified language.
7757: (process_command): Handle -x to specify language.
7758: (main): Use specified language if any.
7759:
7760: Fri Feb 8 18:31:00 1991 Richard Stallman (rms at mole.ai.mit.edu)
7761:
7762: * fold-const.c (fold): Set TREE_USED when create COMPOUND_EXPR.
7763: * stmt.c (warn_if_unused_value): Don't warn if TREE_USED.
7764: * c-typeck.c (build_unary_op): Handle multiple casts inside ++.
7765:
7766: Fri Feb 8 07:37:24 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7767:
7768: * real.h (dconst2): New variable.
7769: * emit-rtl.c (init_emit_once): Initialize dconst2.
7770: * tree.c (real_twop): New function.
7771: * cse.c (simplify_unary_operation): Fold FLOAT, FLOAT_EXTEND, and
7772: FLOAT_TRUNCATE.
7773: (simplify_binary_operation): Convert x*2 to x+x.
7774: (cse_insn): Handle case where constant equivalent is in table.
7775: Fix minor bug with merging src_related_elt.
7776: * fold-const.c (fold): If commutative operation, move a constant
7777: first operand to the second operand.
7778: Remove tests of constants as first operand for commutative operations.
7779: Convert x*2 to x+x.
7780:
7781: Fri Feb 8 03:07:34 1991 Ken Raeburn (raeburn at watch.com)
7782:
7783: * cplus-ptree.c (print_lang_decl): Corrected argument list. Print
7784: address of template info for TEMPLATE_DECL nodes.
7785:
7786: * cplus-decl.c (set_current_level_tags_transparency): New
7787: function, for altering tag-transparency of a context.
7788:
7789: * cplus-parse.y (PRE_PARSED_METHOD_DEF): Was unused; now gone.
7790: (template_instantiation): Handle $-references correctly. Generate
7791: a class_head-like value for LC actions to operate on.
7792: (maybe_base_class_list): New non-terminal: colon and base class
7793: list, or empty.
7794: (named_class_head): Use it.
7795: (unnamed_class_head): Use '{', not LC.
7796: (class_head): If template_instantiation found, use its value.
7797: (template_arg): Apply groktypename to typename args.
7798:
7799: * cplus-template.c (template_text_obstack): Deleted, just use
7800: permanent_obstack instead.
7801: (init_template): Deleted; callers changed.
7802: (current_template_info): New variable: pointer to last-saved
7803: template info record.
7804: (end_template_decl): Use DECL_NAME, DECL_ARGUMENTS,
7805: DECL_LANG_SPECIFIC, rather than TREE_OPERANDs. Save most of
7806: template info here.
7807: (reinit_parse_for_template): Only save text here, in
7808: already-allocated template info record.
7809: (mangle_class_name_for_template): New function.
7810: (instantiate_template): Finally written.
7811:
7812: Thu Feb 7 22:06:56 1991 Richard Stallman (rms at mole.ai.mit.edu)
7813:
7814: * tm-i386v4.h (ASM_OUTPUT_COMMON): Specify rounding in the output.
7815: (ASM_OUTPUT_LOCAL): Use .local and .comm.
7816:
7817: * tm-news.h (FUNCTION_PROLOGUE): Correct syntax of link insn.
7818: (PRINT_OPERAND_ADDRESS): Use period, not colon, before index reg width.
7819:
7820: * stmt.c (pushcase, pushcase_range):
7821: Don't warn for code before first `case' if there is a label on it.
7822:
7823: Thu Feb 7 06:23:10 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7824:
7825: * integrate.c (initialize_for_inline): Accept COPY argument.
7826: Only copy parameter DECL_RTL if COPY non-zero; in that case,
7827: also replace DECL_RTL with copy. All callers changed.
7828: (copy_decl_rtls): New function.
7829: (save_for_inline_copying): Use copy_decl_rtls to copy MEM DECL_RTLs
7830: in the function.
7831: Copy address of pseudos if they are a MEM.
7832:
7833: Wed Feb 6 19:19:25 1991 Richard Stallman (rms at mole.ai.mit.edu)
7834:
7835: * c-typeck.c (build_binary_op_nodefault): No warn for RSHIFT by 0.
7836:
7837: Wed Feb 6 17:37:23 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7838:
7839: * function.c (fixup_var_refs_1): Accept a location in rtx instead
7840: of an rtx.
7841: Unless -fforce-mem, if an insn is valid with MEM, leave it alone.
7842: Rework ZERO_ and SIGN_EXTRACT cases to properly do adjustments
7843: and generalize to support other than QImode MEMs.
7844: (fixup_var_refs_insns): Change call to fixup_var_refs_1.
7845:
7846: Wed Feb 6 08:14:21 1991 Tom Wood (wood at dg-rtp.dg.com)
7847:
7848: * m88k.md (cmp): Use reg_or_0_operand to avoid swapped compares.
7849: (call patterns): Put use of r1 in a parallel construct.
7850: (multiply and divide by a power of two): Now just multiply. The
7851: new combiner will change divide by a power of two into multiply.
7852: (movhi, movqi): Use zero-extend load.
7853: * tm-m88k.h (BYTE_LOADS_ZERO_EXTEND): Use it.
7854: (H constraint): Changed to mean one or two.
7855: * out-m88k.c: Use the proper includes for non-USG systems.
7856: * xm-m88k.h: Include tm.h at the end.
7857:
7858: Wed Feb 6 02:24:38 1991 Michael Tiemann (tiemann at cygnus.com)
7859:
7860: * cplus-decl.c (pushtag): Don't try to nest classes from non-C++
7861: language scopes.
7862:
7863: Wed Feb 6 01:33:16 1991 Richard Stallman (rms at mole.ai.mit.edu)
7864:
7865: * cse.c (simplify_binary_operation): Don't change div into mult.
7866:
7867: Tue Feb 5 10:59:53 1991 Ken Raeburn (raeburn at watch.com)
7868:
7869: * cplus-parse.y (template_instantiation): Supply base class list
7870: and use guts of class declaration. Untested; will have to be
7871: fixed up to deal with template context manipulations.
7872:
7873: Tue Feb 5 00:52:57 1991 Richard Stallman (rms at mole.ai.mit.edu)
7874:
7875: * c-common.c (combine_strings): Finish fixing wide strings.
7876:
7877: * reload1.c (possible_group_p): New subroutine.
7878: (reload): Don't kill last group when looking for a non-group.
7879:
7880: * expmed.c (expand_divmod): If emit cmp insn, force op0 into reg.
7881:
7882: * objc-parse.y (init_lex, yylex): max_wide now measured in chars.
7883: (yylex): Treat \r as whitespace if traditional.
7884:
7885: * toplev.c (compile_file): Add missing arg for dbxout_finish.
7886:
7887: * objc-actions.c (lang_finish): New dummy function.
7888:
7889: * calls.c (expand_call): Recognize other names for setjmp-like fns.
7890:
7891: * gcc.c (main): Use obstack_init, not gcc_obstack_init.
7892:
7893: * varasm.c (assemble_zeros): New function.
7894: All calls to ASM_OUTPUT_SKIP elsewhere now use this function.
7895: Handle ASM_NO_SKIP_IN_TEXT.
7896: * toplev.c (compile_file): Use assemble_zeros.
7897: * final.c (end_final): Likewise.
7898: * tm-3b1.h, tm-att386.h, tm-mot3300.h (ASM_NO_SKIP_IN_TEXT):
7899: Define as 1.
7900: * tm-3b1.h (ASM_OUTPUT_SKIP): Don't deal with outputting zeros.
7901:
7902: Mon Feb 4 20:37:33 1991 Richard Stallman (rms at mole.ai.mit.edu)
7903:
7904: * m68k.md: Use %$ and %& where appropriate.
7905: (special float_truncate pattern): New, for 68040.
7906: (68881 DF multiply recognizers): Avoid fscale if 68040.
7907: (68881 SF multiply recognizers): Avoid fsglmul if 68040.
7908:
7909: * tm-next.h (SECTION_FUNCTION): Simplify; remove last arg.
7910: (EXTRA_SECTION_FUNCTIONS): Rewrite to go with that change.
7911:
7912: Mon Feb 4 18:22:54 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7913:
7914: * reorg.c (link_cc0_isns): New function.
7915: (fill_simple_delay_slots, fill_slots_from_thread): Call it.
7916: (fill_slots_from_thread): Don't make REG_CC_STATUS notes.
7917: (delete_scheduled_jump): Use REG_CC_SETTER instead of REG_CC_STATUS.
7918: Correctly locate compare insn in CC0 case.
7919: (steal_delay_list_from_target): Don't steal an insn that sets cc0;
7920: we can't safely copy it.
7921: (fill_slots_from_thread): Can't put insn that sets CC0 in delay slot
7922: if we don't own its thread; this would otherwise require copying it.
7923: (relax_delay_slots): Don't collapse jump to next insn if it has a
7924: cc0-setting insn in a delay slot.
7925:
7926: * reorg.c (update_block): Accept location to place USE marker; use if
7927: INSN is in a delay slot.
7928: (mark_target_live_regs): Handle the case where we deleted the start
7929: of the basic block that was previously used for a target.
7930: Ignore insns with INSN_FROM_TARGET_P.
7931: (optimize_skip, try_merge_delay_insns, fill_simple_delay_slots):
7932: Pass new argument to update_block.
7933: (try_merge_delay_insns, redundant_insn_p): Clear INSN_FROM_TARGET_P
7934: to show that this insn will be used in both paths of the branch.
7935: (try_merge_delay_insns): Add calls to update_block for insns deleted
7936: from delay slots.
7937:
7938: * reorg.c (mostly_true_jump): If no jumps between target and end of
7939: function, predict as false.
7940: If comparison == 0, predict false; != 0, predict true.
7941:
7942: * reorg.c (steal_delay_list_from_{target,fallthrough}):
7943: Ignore redundant insn even if it can't be placed in our delay slot.
7944: (fill_slots_from_thread): Likewise.
7945: Ensure we don't call redundant_insn_p on any insns that conflict
7946: with what we need and set.
7947:
7948: * reorg.c (fill_eager_delay_slots): Pick up new value of JUMP_LABEL;
7949: it may have been changed by first call to fill_slots_from_thread.
7950:
7951: * rtl.h (REG_TAIL_CALL): Deleted; never documented or used.
7952: (REG_CC_SETTER, REG_CC_USER): Replacements for REG_CC_STATUS.
7953: * rtl.c (reg_note_name): New names.
7954: * final.c (final_scan_insn): Replace REG_CC_STATUS with REG_CC_SETTER;
7955: now only one insn.
7956: * emit-rtl.c (next_cc0_user, prev_cc0_setter): Use REG_CC_SETTER and
7957: REG_CC_USER.
7958:
7959: * cplus-cadillac.c, cplus-class.c, cplus-decl.c, cplus-lex.c:
7960: Replace obstack_init with gcc_obstack_init.
7961: * cplus-search.c, flow.c, gcc.c, loop.c, reload1.c: Likewise.
7962: * reorg.c, stmt.c: Likewise.
7963:
7964: * reload1.c (eliminate_regs, case ASM_OPERANDS): Fix typo when making
7965: new ASM_OPERANDS.
7966:
7967: * recog.c: Now includes insn-flags.h and insn-codes.h.
7968: (validate_replace_rtx_1): If replacing the source of a ZERO_ or
7969: SIGN_EXTRACT with a MEM, try to put the MEM in the mode to be used for
7970: the MEM.
7971: * Makefile.in (recog.o): Depends on insn-flags.h and insn-codes.h.
7972:
7973: Mon Feb 4 17:39:36 1991 Richard Stallman (rms at mole.ai.mit.edu)
7974:
7975: * c-typeck.c (digest_init): Error if init array with another array.
7976:
7977: Mon Feb 4 04:58:20 1991 Ken Raeburn (raeburn at watch.com)
7978:
7979: * cplus-tree.def (TEMPLATE_DECL): New node type.
7980: (TEMPLATE_PARM_IDX): New node type; like integer, with an extra
7981: field.
7982:
7983: * cplus-method.c (check_text_len): Fix up error message to be more
7984: correct. Moved function before new_text_len so that the latter
7985: can call it and inlining can work.
7986: (new_text_len): Call check_text_len.
7987:
7988: * cplus-method.c (build_overload_name): No longer static.
7989:
7990: * cplus-class.c (unuse_fields): Now static.
7991: (popclass): Use a temporary when building C_C_D.
7992:
7993: * cplus-decl.c (lookup_tag): Don't complain about type mismatch if
7994: the tag found is for a template.
7995:
7996: * cplus-lex.c: New lookup tables, for new "template" keyword.
7997: (reinit_lang_specific): Call init_template.
7998: (init_lex): Ditto.
7999: (file_from_saved_text): Renamed from input_from_saved_text.
8000:
8001: * cplus-lex.c (identifier_type): New function; returns primary
8002: type (IDENTIFIER, TYPENAME, PTYPENAME) indicated by token name. A
8003: PTYPENAME is returned for (TYPE_DECL (TEMPLATE_DECL ...)) nodes.
8004: (see_typename): Call it.
8005:
8006: * cplus-lex.c (yylex): In handling identifiers, use subset of
8007: TYPENAME code for PTYPENAME tokens.
8008:
8009: * cplus-template.c: New file.
8010: (begin_template_parm_list): Push new scope and switch to permanent
8011: obstack.
8012: (end_template_parm_list): Return parameter list as a tree vector.
8013: (end_template_decl): Save away new TEMPLATE_DECL node.
8014: (process_template_parm): Build up tree list of template
8015: parameters.
8016: (instantiate_template): For now, just complain.
8017: (init_template): Set up template obstack.
8018: (reinit_parse_for_template): Gobble up class definition text and
8019: save it away.
8020:
8021: * cplus-parse.y (template_header, template_parm_list): Call above
8022: routines.
8023: (datadef): Put template declarations here, instead of in
8024: class_head.
8025: (named_class_head_sans_basetype, named_class_head,
8026: unnamed_class_head): Break up old class_head derivations.
8027: (class_head): Now any of the above, plus template types with or
8028: without instantiation.
8029: (template_type): Call instantiate_template.
8030: (template_arg_list): Build up list of args.
8031:
8032: * cplus-tree.h (lang_type): Add TEMPLATE field. Also add macro
8033: TYPE_TEMPLATE.
8034:
8035: Sun Feb 3 21:16:36 1991 Richard Stallman (rms at mole.ai.mit.edu)
8036:
8037: * tm-m68k.h (PRINT_OPERAND): Handle `&' and `$'.
8038: (PRINT_OPERAND_PUNCT_VALID): They are valid.
8039:
8040: * out-next.c (handle_pragma): Unread the newline.
8041:
8042: * toplev.c (main): Warn if meaningless optimizations are requested.
8043: Don't enable options by default that would get warnings.
8044:
8045: * m68k.md (extend QI to HI): Typo in clr insn.
8046:
8047: * c-common.c (combine_strings): Decrement LEN properly when copying.
8048: * c-parse.y (init_lex, yylex): max_wide now measured in chars.
8049:
8050: * tree.c (gcc_obstack_init): Fix typo in forward decl.
8051:
8052: Sat Feb 2 09:24:56 1991 Michael Tiemann (tiemann at cygnus.com)
8053:
8054: * cplus-decl.c (poplevel): Change DECL_CONTEXT of decls only of
8055: their context is CURRENT_FUNCTION_DECL.
8056:
8057: Fri Feb 1 13:46:07 1991 Richard Stallman (rms at mole.ai.mit.edu)
8058:
8059: * print-tree.c (print_node): Don't print chain for `c' and `x' nodes.
8060:
8061: * loop.c (record_excess_regs): Moved here.
8062:
8063: See file ChangeLog.2.
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