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1.1 root 1: Thu Jan 31 00:33:33 1991 Richard Stallman (rms at mole.ai.mit.edu)
2:
3: * loop.c (scan_loop): Check each libcall for regs it uses
4: but does not mention in the equivalent value.
5: To move the libcall, we must have at most one such reg
6: and it must be moved as well.
7: (libcall_other_reg): New subroutine.
8: * rtlanal.c (record_excess_regs): New function.
9:
10: * tree.c (gcc_obstack_init): New function.
11: (init_obstacks, save_tree_context): Use that.
12: (OBSTACK_CHUNK_SIZE): New parameter.
13: * xm-next.h: New file.
14: * configure (m68k/next): Use that file.
15:
16: * flags.h (flag_no_common): Declare new flag to treat external defs
17: as ANSI specifies (i.e. not as common).
18: * toplev.c (flag_no_common, f_options): Support -fno-common.
19: * varasm.c (assemble_variable): Don't output a common if
20: flag_no_common is set. Treat as if initialized to 0.
21:
22: * gcc.c (default_compilers): Define __ASSEMBLER__ for .S file.
23:
24: * tm-aix386.h (ASM_OUTPUT_LOCAL): Ok to use bss, since no shared libs.
25: (LINK_SPEC): Pass through all -K and -T options.
26: * xm-aix386.h (TRUE, FALSE): Undef if already def, to avoid warning.
27:
28: * tm-m68k.h (TARGET_68040, TARGET_68040_ONLY): New machine flags.
29: (TARGET_SWITCHES): Alternatives to set them.
30: * tm-next.h (TARGET_DEFAULT): Changed to 0407 for 68040.
31:
32: * out-m68k.h (standard_68881_constant_p): Always return 0
33: for TARGET_68040 since fmovecr is no longer implemented in hardware.
34:
35: * m68k.md (ftruncdf2, ftruncsf2): Don't emit fintrz for
36: TARGET_68040, since it is no longer implemented in hardware.
37: (muldf3): Don't use fscale on 68040, since not implemented in hardware.
38:
39: * toplev.c (optimize): Now stores specified optimization level.
40: (main): Keep the largest optimization level specified.
41: Handle any integer.
42:
43: * c-decl.c (pushdecl): Don't make an extern global for -traditional
44: if it uses any local types.
45:
46: * tm-sun386i.h (PCC_BITFFIELD_TYPE_MATTERS): Use 1 as value.
47:
48: Wed Jan 30 12:41:15 1991 Richard Stallman (rms at mole.ai.mit.edu)
49:
50: * fixincludes (sys/systypes.h): Edit this to handle _SIZE_T, etc.
51:
52: * function.c (put_var_into_stack): Allocate var ref chain link
53: while in the proper function's obstack.
54:
55: * fold-const.c (const_binop): Don't crash for real/0 if have infinity.
56:
57: * flow.c (mark_set_1): Don't make log link for hard reg in asm insn.
58:
59: Wed Jan 30 07:45:33 1991 Tom Wood (wood at dg-rtp.dg.com)
60:
61: * sched.c (schedule_block): Indicate what insns constitute each
62: basic block.
63:
64: Tue Jan 29 12:35:42 1991 Richard Stallman (rms at mole.ai.mit.edu)
65:
66: * Makefile.in (gnulib1.*, gnulib2.*): Declare them phony targets.
67:
68: * print-tree.c (print_node): Print message if TREE_PERMANENT is wrong.
69: * tree.c (object_permanent_p): New function.
70:
71: * print-tree.c (print_node): Remove DECL_LANG_FLAG_10.
72:
73: Tue Jan 29 10:07:48 1991 Tom Wood (wood at dg-rtp.dg.com)
74:
75: * m88k.md (minus/xor/and, neg/ne/compare/and): Delete these. This
76: should be done by combine.
77: (compare operator): Eliminate except when a SET_SRC.
78: * tm-m88k.h (OPTIMIZATION_OPTIONS): -fomit-frame-pointer is a
79: default optimization.
80:
81: Mon Jan 28 12:52:11 1991 Richard Stallman (rms at mole.ai.mit.edu)
82:
83: * tree.h (DECL_VIRTUAL_P): Renamed from TREE_VIRTUAL.
84: (struct tree_common): Eliminate virtual_flag.
85: (struct tree_decl): Add virtual_flag.
86:
87: * Makefile.in (enquire.o): Pass -DNO_STDDEF.
88:
89: * m68k.md (tablejump): Now have a define_expand that does
90: different things depending on CASE_VECTOR_PC_RELATIVE,
91: and a separate define_insn for each case.
92:
93: * function.h (outer_function_chain): Declare the variable.
94:
95: * tree.c (debug_obstack): Fix typos.
96: * tree.h (struct tree_common): Fix typo.
97:
98: * Makefile.in (GNULIB1_TARGET, GNULIB2_TARGET): Variables deleted.
99: (gnulib): Depend on gnulib1.target and gnulib2.target explicitly.
100:
101: * dbxout.c (dbxout_type): Use DECL_VIRTUAL_P, not TREE_VIRTUAL.
102:
103: * cplus-tree.h (TREE_PRIVATE, TREE_PROTECTED): #if 0.
104:
105: * cexp.y (keywords): Cast names for parens to U_CHAR *.
106:
107: * gcc.c (process_command): Fix typo setting switches[n_switches].arg.
108:
109: * loop.c (loop_reg_used_before_p): Check insns before INSN, not after.
110:
111: * objc-actions.c (objc_finish): Renamed from lang_finish.
112: * objc-parse.y (program): Call objc_finish at the end.
113:
114: * Changes from Matthew Self ([email protected]):
115:
116: * objc-parse.y: Since objc-parse.y was so out of date with
117: respect to c-parse.y, I started over with c-parse.y and
118: reintegrated the Objective-C modifications. Now that
119: Objective-C is working I hope that objc-parse.y will be kept
120: more up to date.... I did not re-integrate the lexer since I
121: don't have gperf working. I simply cut and pasted what
122: Stallman had in objc-parse.y. Someone with access to gperf
123: should re-generate this stuff.
124:
125: * objc-actions.c (comp_method_with_proto,
126: comp_proto_with_proto): Stallman's change to use the
127: functions end_temporary_allocation and
128: resume_temporary_allocation is incorrect, since it always
129: leaves allocation temporary, whether it was before or not.
130:
131: Perhaps the push and pop functions would do the trick....
132:
133: * objc-actions.c (get_arg_type_list): Use new function
134: groktypename_in_parm_context.
135:
136: * objc-actions.c (_OBJC_SELECTOR_REFERENCES_decl,
137: _OBJC_SELECTOR_REFERENCES_id): Removed.
138:
139: * objc-actions.c (synth_module_prologue): Eliminated code to
140: forward declare the selector references array.
141:
142: * objc-actions.c (init_objc_symtab): Eliminated code to
143: initialize "refs" field in objc_symtab structure (which is
144: now vestigial).
145:
146: * objc-actions.c (build_selector_translation_table): Rewrote.
147:
148: * objc-actions.c (build_selector_reference): New routine.
149:
150: * objc-actions.c (build_message_expr, build_selector_expr):
151: Use new routine.
152:
153: * config/tm-next.h (GO_IF_INDEXABLE_BASE): Don't use pc
154: relative addressing for LABEL_REF's. Since branch tables are
155: in the const section, we treat LABEL_REF's like SYMBOL_REF's
156: here. Otherwise invalid addresses were being generated.
157:
158: * config/tm-next.h (CASE_VECTOR_PC_RELATIVE, CASE_VECTOR_MODE):
159: Use absolute branch tables rather than relative ones.
160:
161: * config/tm-next.h (ASM_OUTPUT_MAIN_SOURCE_FILE_END): Output
162: an N_SO symbol with no name to mark the end of the module.
163: This is needed to support scattered loading on the NeXT.
164:
165: * config/out-next.c (handle_pragma): Call to xrealloc had wrong args.
166:
167: * configure: Entry for NeXT must set out_file to out-next.c.
168:
169: * config/out-next.c: Typo: "flags" -> "flags.h"
170:
171: * config/tm-next.h (LIB_SPEC): Brought up-to-date. There
172: are probably more changes needed here.
173:
174: * c-decl.c (pushdecl_top_level): New function. This was
175: copied from an older version of g++.
176:
177: * c-decl.c (init_decl_processing): Make alloca first arg sizetype.
178:
179: * c-decl.c (groktypename_in_parm_context): New function.
180:
181: Mon Jan 28 07:07:01 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
182:
183: * loop.c (loop_reg_used_before_p): Don't use INSN_LUID since INSN
184: might have been made by loop.c for an outer loop.
185:
186: * loop.c (move_movables, strength_reduce): Replace register references
187: in REG_NOTES as well as PATTERN.
188:
189: * loop.c (strength_reduce): Call maybe_eliminate_biv twice, not
190: three times.
191: (maybe_eliminate_biv): Don't abort if elimination fails even though
192: we thought it wouldn't. This can happen if certain insn patterns
193: aren't valid.
194: (maybe_eliminate_biv_1): Ensure that we do not change the insn at
195: all if all the required changes can't be done.
196:
197: Sun Jan 27 21:26:29 1991 Richard Stallman (rms at mole.ai.mit.edu)
198:
199: * Makefile.in: Rename config-dir back to config.
200:
201: Sat Jan 26 17:48:22 1991 Richard Stallman (rms at mole.ai.mit.edu)
202:
203: * objc-parse.y (program): Call objc_finish.
204: * objc-actions.c (objc_finish): Renamed from lang_finish.
205:
206: * objc-actions.c, objc-parse.y: New version from NeXT.
207:
208: Sat Jan 26 17:37:48 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
209:
210: * expr.c (expand_expr, case COND_EXPR): Disable special-case of
211: A ? B : C when B and C are simple. This is now done better by jump.
212:
213: Sat Jan 26 13:16:58 1991 Richard Stallman (rms at mole.ai.mit.edu)
214:
215: * tree.h (TREE_PRIVATE, TREE_PROTECTED, TREE_VIRTUAL): New macros.
216: (struct tree_common): New flag fields.
217: * dbxout.c (dbxout_type): Get rid of conditional; can always use these.
218:
219: * cccp.c (lookup_import): Do return -2 if file found.
220: (main): Handle `.m' suffix like `.S'.
221:
222: * configure (m68k/next): Use out-next.c.
223:
224: * WORD_SWITCH_TAKES_ARG and SWITCH_TAKES_ARG now give # of args.
225: * gcc.c (struct switchstr): New field `args' replaces `part2'.
226: (process_command): Record all the args a switch has.
227: (give_switch): Pass all the strings in `args'.
228:
229: * tree.h (struct tree_common): Normally make `code' an enum tree_code.
230:
231: * m68k.md (tablejump): New pattern.
232: (casesi, etc.): Deleted.
233:
234: * tree.c (debug_obstack): New function.
235:
236: * toplev.c (compile_file): Call dbxout_finish near the end.
237: * dbxout.c (dbxout_finish): New function.
238:
239: * print-tree.c (print_node): Always print ERROR_MARK node briefly.
240:
241: * objc-actions.h (METHOD_ENCODING, CLASS_CATEGORY_LIST): New macros.
242:
243: * gcc.c (execute): Make fatal signal message clearer.
244: (default_compilers): For .m file, define __OBJC__,
245: and pass -lang-objc and -gen-decls to cc1.
246:
247: * dwarfout.c: Include output.h.
248: (current_function_decl, asm_out_file): Explicit extern decls deleted.
249: (abort, fatal): Explicit extern decls deleted.
250: (NO_RETURN): Definition deleted.
251: (named_labels): Don't declare it.
252: (output_symbol): Don't use it.
253: (MAXPATHLEN): Don't define this. Don't include sys/param.h.
254: (output_source_file_die): Avoid limit on file name size.
255: (output_symbols_for_stmt): Deleted.
256: (output_symbols_for_block): Adapt to using BLOCK, not LET_STMT.
257:
258: * configure: Renamed from `config'.
259: * config: Directory renamed back from config-dir.
260:
261: Sat Jan 26 1990 Ron Guilmette (rfg at ncd.com)
262:
263: * README.DWARF: updated to reflect changes to dwarfout.c, the
264: inclusion of dwarf.h (and its changes) and the fact that the
265: DWARF support is no longer directly tied to the DG versions of
266: GCC.
267:
268: * dwarfout.c: included a patch (provided by Ray Essick) to allow
269: dwarfout.c to properly get a value for MAXPATHLEN even on (old)
270: System V.3 systems.
271:
272: * dwarfout.c: added support for long long types (as suggested by
273: Ray Essick).
274:
275: * dwarfout.c: added support for the AT_comp_dir attribute. Also,
276: as part of this change, the name of the compilation directory is
277: no longer placed into in the .sources section.
278:
279: * dwarfout.c: added support for the AT_addr_ranges attribute.
280:
281: * dwarfout.c: added support for the AT_prototyped attribute.
282:
283: * dwarfout.c: added support for the AT_src_info attribute. Also,
284: as part of this change, there is no longer a "special" entry
285: at the start of the .srcinfo section for each compilation unit,
286: and the contents of the "special" final entry in the .srcinfo
287: section have changed (to { -1, -1 }).
288:
289: * dwarfout.c: modified to allow additional GNU DWARF extensions
290: to be generated whenever the corresponding extended attribute
291: codes are defined (presumably within a modified dwarf.h file).
292:
293: * dwarfout.c: use the section names .srcinfo and .sources rather
294: than .finfo and .files. The additional specificity is warranted
295: because the DWARF information may someday include information
296: about object files as well as source files.
297:
298: * dwarfout.c: fixed a bug where a type attribute was being generated
299: for functions and function types even when the return type was
300: void. "Standard" dwarf says that if the return type for a function
301: or function type is void then no type attribute should be generated
302: for the corresponding DIE.
303:
304: Sat Jan 26 04:22:08 1991 Michael Tiemann (tiemann at cygnus.com)
305:
306: * cplus-lex.c (interface_strcmp): Handle String.String.Map.cc and
307: friends.
308:
309: * cplus-typeck.c (build_unary_op): Merge change to generate better
310: code from simple cast expression.
311:
312: Fri Jan 25 10:06:28 1991 Michael Tiemann (tiemann at cygnus.com)
313:
314: * cplus-decl.c (pushtag): Don't call `pushdecl' if the type's name
315: is anonymous, lest we recurse ad infinitum.
316:
317: Thu Jan 24 23:56:55 1991 Richard Stallman (rms at mole.ai.mit.edu)
318:
319: * optabs.c (expand_binop, expand_unop): Word at a time only for ints.
320:
321: Thu Jan 24 09:40:37 1991 Tom Wood (wood at dg-rtp.dg.com)
322:
323: * sdbout.c (sdbout_symbol): Apply changes in dbxout.c to deal with
324: SUBREG. Don't emit a symbolic definition for variables that can't
325: be represented.
326:
327: Thu Jan 24 21:18:15 1991 Richard Stallman (rms at mole.ai.mit.edu)
328:
329: * config: Conditional for setting $os was backward.
330: Also mention name of make-var file if one exists.
331:
332: * out-i386.c: Delete a large piece of accidental insertion.
333:
334: * dwarfout.c: Don't include c-tree.h or cplus-tree.h.
335: (INT_TYPE_SIZE, etc.): Define them if not overridden.
336: (fundamental_type_code): Distinguish types by TYPE_PRECISION.
337: But also check for the built-in C type names.
338:
339: Thu Jan 24 15:23:17 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
340:
341: * gcc.c (default_compilers): Pass all args starting with "O" to
342: cc1 so that -O2 is passed along.
343:
344: Thu Jan 24 13:10:27 1991 Richard Stallman (rms at mole.ai.mit.edu)
345:
346: * stmt.c (expand_expr_stmt): Don't warn for any casts to void.
347:
348: * config: Fix typos setting shell vars.
349: Rename config to config-dir.
350: Insert missing \ in case for delta.
351:
352: Wed Jan 23 16:31:27 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
353:
354: * emit-rtl.c (emit_jump_insn_{before,after}): Allow PATTERN to be
355: a SEQUENCE.
356:
357: * loop.c (check_dbra_loop): Use emit_jump_insn_before when writing
358: out compare and jump sequence, not emit_insn_before, to ensure that
359: if we only write one insn that it is a JUMP_INSN.
360:
361: * toplev.c (flag_rerun_cse_after_loop): New: -frerun-cse-after-loop.
362: (rest_of_compilation): Rerun cse after loop if desired.
363: (main): Add support for -O2.
364: Prescan args for -O and -O2 to set default values for many -f options.
365: Add call to new macro OPTIMIZATION_OPTIONS.
366: Save status of -version until all args have been processed; then
367: write out the info.
368: (print_single_switch): New function.
369: (print_switch_values): Renamed from print_target_switch_defaults.
370: Now prints out currently enabled -f, -m, and -W switches. Calls
371: print_single_switch to write out switch and handle long lines.
372:
373: * rtl.def (SUBREG): Change rtx class from 'o' to 'x'.
374:
375: * cse.c (find_comparison_args): Ignore hash table entry if not valid.
376:
377: Wed Jan 23 00:12:24 1991 Richard Stallman (rms at mole.ai.mit.edu)
378:
379: * config: File renamed from config.gcc.
380: Allow abbreviations for +-options.
381: Allow config HOST TARGET.
382: Support +gas and +nfp as separate options.
383: Rename all the machine alternatives to general scheme:
384: cpu/company-system. Allow abbreviations for cpu/company pairs.
385: * config-dir: Dir renamed from config.
386:
387: * Makefile.in (install-dir): Create bindir here.
388:
389: * cccp.c (main): Delete duplicat p++ left in last change.
390:
391: * Makefile.in (GNULIB1, GNULIB1_TARGET): Renamed from GNULIB*.
392: (gnulib1.portable, gnulib1.target): Renamed from gnulib.*.
393: They now make a file named gnulib1, from gnulib1.c.
394: (LIB1FUNCS, LIB1FUNCS_EXTRA): Renamed from LIBFUNCS*.
395: (for-bootstrap, rest.encap): Depend on gnulib, not GNULIB2_TARGET.
396: (stamp-gnulib2): This file is no longer used.
397: (gnulib2.portable): Old stamp-gnulib2 rule renamed to this.
398: Now create a file named gnulib2, from gnulib2.c alone.
399: (gnulib): New target, combines gnulib1 and gnulib2 into gnulib.
400: (mostlyclean): Delete additional temporary files.
401: No need to avoid deleting stamp-gnulib2.
402: (clean): Delete gnulib1 and gnulib2, but not stamp-gnulib2.
403: (realclean): No need to delete gnulib here.
404: (install-gnulib): Changed dependencies.
405: * gnulib1.c: File gnulib.c renamed.
406:
407: * Makefile.in (install-dir): Create bindir here.
408:
409: * cccp.c (main): Delete duplicat p++ left in last change.
410:
411: Sun Jan 20 14:00:16 1991 Michael Tiemann (tiemann at cygnus.com)
412:
413: * cplus-class.c (finish_struct): Conditionalize EMPTY_FIELD_BOUNDARY
414: on whether or not it is defined. Similarly for PCC_BIT_FIELD_MATTERS.
415:
416: Wed Jan 16 18:56:30 1991 Richard Stallman (rms at mole.ai.mit.edu)
417:
418: * cse.c (fold_rtx): When folding dispatch table, stay inside bounds.
419:
420: Wed Jan 16 08:11:48 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
421:
422: * reload.c (find_reloads_toplev): Fix typo in recent change.
423:
424: * reload1.c (eliminate_regs): If we have a non-paradoxical
425: (subreg (pseudo)) and the pseudo has an equivalent memory
426: location, replace the SUBREG because find_reloads may do it.
427:
428: Tue Jan 15 01:41:28 1991 Richard Stallman (rms at mole.ai.mit.edu)
429:
430: * loop.c (scan_loop): Condition for movability was wrong.
431: A reg that isn't necessarily set may be unsafe
432: even if used only inside the loop.
433: However, a reg used only in the same basic block after the set is safe.
434: So is a reg that isn't a user-level variable.
435:
436: * loop.c (loop_optimize): Reverse order of scanning loops.
437:
438: * loop.c (scan_loop): After skipping the insns of a libcall sequence,
439: ignore notes when searching back to find the last insn of the seq.
440:
441: * cccp.c (main): Use envvar GCC_EXEC_PATH to specify translation
442: of prefixe in default include dirs.
443:
444: * cccp.c (main): Do path_includes after explicit options.
445:
446: * combine.c (try_distrib): Don't push + thru negative count shifts.
447:
448: Mon Jan 14 09:40:28 1991 Ken Raeburn (raeburn at watch.com)
449:
450: * cplus-lex.c (yylex): Even in `extern "C"', the keywords are the
451: same.
452:
453: * cplus-lex.c (input_from_saved_text): New function. Set string
454: source for FILE pointer.
455: (yylex, do_pending_inlines): Call it.
456:
457: * cplus-parse.y (stmts, stmt): Type is now `tree'. Some actions
458: fixed to return it.
459:
460: * cplus-lex.c (reinit_parse_for_block): New function, with most of
461: the guts of reinit_parse_for_method. Magic argument IS_TEMPLATE
462: chooses a set of error messages.
463: (reinit_parse_for_method): Call it.
464: cplus-template.c (reinit_parse_for_template): New function, also
465: calls reinit_parse_for_block.
466:
467: Mon Jan 14 07:20:36 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
468:
469: * loop.c (skip_consec_insns, move_movables, strength_reduce): Don't
470: call find_reg_note on a NOTE.
471:
472: Sun Jan 13 15:45:23 1991 Richard Stallman (rms at mole.ai.mit.edu)
473:
474: * cccp.c: Separate namespace for assertions. Don't expand macros
475: inside assertions in #if. Allow arbitrary token sequences.
476: (rescan): Special handling after `#' if assertions_flag.
477: (expand_to_temp_buffer): New arg sets assertions_flag. Callers changed.
478: (eval_if_expression): Pass 1 for that arg.
479: (skip_paren_group): New function.
480: (assertion_hashtab, ASSERTION_HASHSIZE, ASSERTION_HASHNODE): New.
481: (assertion_install, assertion_lookup, delete_assertion): New functions.
482: (T_ASSERTION): Deleted.
483: (tokenlist_list): Renamed from arglist_list.
484: (read_token_list): Renamed from read_keyword_list. Much changed.
485: Copy the strings into the heap.
486: (free_token_list): Renamed from free_keyword_list. Free the strings.
487: (do_assert, do_unassert): Considerably changed.
488: (check_assertion): Somewhat changed.
489: (check_macro_name): Extra arg contributes to error message.
490: * cexp.y (yylex): Parse everything as a name if keyword_parsing.
491: (rule for assertions): Set, then clear, keyword_parsing.
492: (keywords): Allow empty sequence. Allow nested parens.
493:
494: Sat Jan 12 12:18:00 1991 Richard Stallman (rms at mole.ai.mit.edu)
495:
496: * c-typeck.c (build_unary_op): Make better code for simple casts.
497:
498: * reload.c (find_reloads): Computing reload_when_needed, don't neglect
499: operands that don't have output reloads.
500:
501: * cse.c (refers_to_mem_p): At check_addr, handle PLUS inside CONST.
502:
503: Sat Jan 12 06:30:56 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
504:
505: * reorg.c (steal_delay_list_from_*): Add missing argument to calls to
506: insn_sets_resource_p.
507: (fill_eager_delay_slots, relax_delay_slots): Add missing argument
508: to calls to mostly_true_jump.
509: (relax_delay_slots): Correctly handle case where we can't invert jump.
510:
511: * reload.c (find_reloads_toplev): If we have a SUBREG of a
512: pseudo that resides in memory and the address is not offsettable,
513: substitute for the pseudo now so we can generate a reload for the
514: address.
515:
516: Fri Jan 11 14:39:09 1991 Richard Stallman (rms at mole.ai.mit.edu)
517:
518: * tm-next.h (LIB_SPEC, STARTFILE_SPEC): Don't support -p.
519:
520: Thu Jan 10 12:26:49 1991 Richard Stallman (rms at mole.ai.mit.edu)
521:
522: * tm-sun2.h (CC1_SPEC): Define to ignore -sun2 and -target.
523: (WORD_SWITCH_TAKES_ARG): Define to recognize -target.
524: (LIB_SPEC): Define; handle -a.
525: * tm-sun2os4.h: New file.
526: * tm-m68k.h (TARGET_SWITCHES): Handle -msky and -mnosky.
527: (TARGET_SKY): New macro.
528:
529: * tm-next.h (LIB_SPEC): Use -lsys_s, not -lc.
530:
531: * c-parse.y (yylex): Fix typo.
532:
533: * genoutput.c (output_prologue): Make insn-output.c use insn-codes.h.
534: * Makefile.in (insn-output.o): Depend on insn-codes.h.
535:
536: * Makefile.in (install-headers): Save $(libsubdir) before cd.
537:
538: * Makefile.in (gnulib): Depend on config.status.
539:
540: * gnulib2.c (__umulsidi3): Use #else around inline function.
541: Use __-style names for all machines.
542:
543: Wed Jan 9 17:06:18 1991 Michael Tiemann (tiemann at cygnus.com)
544:
545: * out-sparc.c (various places): Change \; to \n\t in printf
546: strings.
547:
548: * sparc.md: Change PIC initialization pattern to recognize pattern
549: that doesn't involve a clobber.
550: * out-sparc.c: Rest of change is here, where PIC initialization is
551: emitted.
552:
553: * cse.c (simplify_unary_operation, simplify_binary_operation):
554: Correctly adjust VAL for bits outside MODE.
555:
556: Wed Jan 9 15:45:26 1991 Richard Stallman (rms at mole.ai.mit.edu)
557:
558: * flow.c (libcall_dead_p): Handle a CALL in a PARALLEL.
559:
560: Tue Jan 8 13:35:50 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
561:
562: * expmed.c (emit_store_flag): Correct UNSIGNEDP value passed to
563: convert_to_mode and expand_unop.
564:
565: Mon Jan 7 11:56:31 1991 Michael Tiemann (tiemann at cygnus.com)
566:
567: * gplus.gperf: New keywords for templates and other extensions.
568:
569: * cplus-lex.c: Incorprate new gperf code.
570:
571: * cplus-class.c (resolve_scope_to_name): New function.
572: (build_scoped_method_call): Call `resolve_scope_to_name' instead of
573: handling by itself.
574: * cplus-decl.c (pushdecl_class_level): Give forward declaration.
575: (lookup_nested_type): New function.
576: (pushtag,lookup_tag,xref_tag): Handle nested classes.
577: (finish_function): Add comment about obscure argument passing
578: convention for static method calls (at the call site). Also, don't
579: call operator delete with NULL pointer. Call it with
580: `current_class_decl' instead.
581: (globalize_nested_type): New function. Used when we learn that a
582: type which initially appeared to be nested should be defined in the
583: global scope instead.
584: (grokdeclarator): Call `globalize_nested_type' when grokking an
585: as-yet undefined class type.
586: * cplus-dem.c: Updated to handle qualified (i.e. nested) types.
587: This means handling the new letter `Q' in mangled names.
588: * cplus-init.c (build_member_call): Handle nested classes using
589: `resolve_scope_to_name' instead of handling itself.
590: * cplus-lex.c (typename_scope_in_progress): New static variable to
591: allow the lexer to figure out what are nested class typenames,
592: scoped member references, etc., without getting the parser too
593: involved.
594: (yylex): Recognize SCOPED_TYPENAME and TYPENAME_SCOPE tokens.
595: Also, recognize '<' and '>' separately from ARITHCOMPARE so we can
596: implement templates.
597: No longer recognizes (X::*) or (X::&) as single tokens.
598: * cplus-method.c (build_overload_nested_name): New function to build
599: internal names for nested typenames.
600: * cplus-parse.y: Handle parameterized type syntax (more or less).
601: (dummy_decl): Gone!
602: Nested types are now handled.
603: * cplus-tree.h (DECL_UNDEFINED_FRIENDS): Moved out of DECL_CONTEXT
604: slot of TYPE_DECLs. DECL_CONTEXT of typename is now the enclosing
605: type for nested types.
606: (DECL_NESTED_TYPENAME): An identifier pointer that makes the name of
607: the type unique for the compilation.
608: (IDENTIFIER_*): When initializing, call `perm_calloc', not
609: permalloc, since non-zero values actually mean something,
610: and we don't guarantee to initialize everything in one go.
611: * tree.c (perm_calloc): New function.
612: * cplus-typeck.c (default_conversion): Don't defaultly convert a
613: naked METHOD_REF such that it becomes a virtual function table
614: index. Only let this happen if user requests it with `&'.
615:
616: * Makefile.in: Handle new source file cplus-template.c.
617:
618: Mon Jan 7 15:03:53 1991 Richard Stallman (rms at mole.ai.mit.edu)
619:
620: * c-typeck.c (process_init_constructor): Error if values
621: provided for an array of empty elements.
622:
623: * out-i386.c (fp_top_dead_p1): Follow jump only if optimizing.
624: (fp_call_internal): Discard result if unused. Use fp_top_dead_p1.
625:
626: * cse.c (cse_insn): In special case for (set REG0 REG1),
627: change any REG_EQUIV notes to REG_EQUAL.
628:
629: * tm-sun386i.h (PCC_BITFIELD_TYPE_MATTERS): Define it.
630:
631: * tm-att386.h (ASM_OUTPUT_LOCAL): Change back to data section.
632:
633: * genrecog.c (write_tree_1): Typo in printf string.
634:
635: * flow.c (libcall_dead_p): New arguments NOTE and INSN.
636: Now test that the hard return reg in the call is dead.
637: Callers changed.
638:
639: Mon Jan 7 12:27:07 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
640:
641: * recog.c (cancel_changes): Cancel changes in opposite order we made
642: them.
643:
644: * integrate.c (subst_constants): Only commute operands if op0 is const.
645:
646: * rtl.def (INLINE_HEADER): Add new integer field.
647: * rtl.h (POPS_ARGS): New macro for place to save
648: current_function_pops_args.
649: (FUNCTION_FLAG_POPS_ARGS): Deleted; no longer a single bit.
650: * emit-rtl.c (gen_inline_header_rtx): Add new arg for "pops args".
651: * integrate.c (initialize_for_inline, output_inline_function):
652: Correctly save and restore current_function_pops_args.
653:
654: Sun Jan 6 14:10:44 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
655:
656: * rtl.h (ASM_OPERANDS_INPUT_LENGTH): New macro.
657: * reload1.c (eliminate_regs): Use ASM_OPERANDS_... macros.
658: * recog.c (asm_noperands, decode_asm_operands): Likewise.
659:
660: * rtl.def (IF_THEN_ELSE): Set class to '3'.
661:
662: * cse.c (simplify_{unary,binary,ternary}_operation): New functions,
663: from fold_rtx.
664: (fold_rtx): Call these function to do the bulk of the work.
665: Use GET_RTX_CLASS to find commutative and comparison operations.
666: Swap folded_arg[01] when commuting operands.
667: * rtl.h: Define new functions.
668: * integrate.c (try_constants): Replace constant folding code with
669: calls to new functions above.
670: In commutative operations, put constants last.
671:
672: * genemit.c (struct clobber_pat): New data structure.
673: (gen_insn): If pattern ends with a group of CLOBBERs of hard
674: registers, store this information in a struct clobber_pat.
675: (output_add_clobbers): New function.
676: (main): Call it to write code to add CLOBBERs.
677: * genrecog.c (struct decision): Add new field num_clobbers_to_add.
678: (make_insn_sequence): If pattern ends with a group of CLOBBERs,
679: set up to recognize it without the CLOBBERs but to indicate the
680: number of CLOBBERs omitted.
681: (add_to_sequence): Initialize num_clobbers_to_add.
682: Remove unnecessary conditionalization on STORE_FLAG_VALUE.
683: (break_out_subroutines, write_subroutine, write_tree): Remove
684: RETURN_PREFIX parameter; TYPE is sufficient.
685: (write_subroutine): Add extra parameter for recog_* functions.
686: (write_tree_1): Pass TYPE instead of string for return.
687: Write out code to return number of CLOBBERs needed.
688: (write_tree): Add new parameter to recog_*.
689: (main): Add new parameter to recog.
690: Don't pass return string to break_out_subroutines and write_tree.
691: * recog.c (recog_memoized): Pass extra (0) parameter to recog.
692: * combine.c (recog_for_combine): New function.
693: (try_combine, simplify_and_cc0, try_distrib): Use it instead of recog.
694: (reg_dead_at_p, reg_dead_at_p_1): New functions.
695:
696: * flow.c (mark_set_1): Count in reg_n_sets when a part of a register
697: is modified.
698: Update SIGNIFICANT correctly when subreg_p and multiple hard regs.
699: Compute reg_n_sets for hard registers.
700:
701: Sun Jan 6 13:41:49 1991 Richard Stallman (rms at mole.ai.mit.edu)
702:
703: * function.c (locate_and_pad_parm): Do REG_PARM_STACK_SPACE just once.
704:
705: * Changes by [email protected].
706: * calls.c (expand_call): Test value of REG_PARM_STACK_SPACE instead
707: of assuming that it will always be greater than zero.
708: * function.c (assign_parms): Same as above. Also, correct
709: calculation of STACK_BYTES.
710:
711: * reload1.c (reload_reg_free_p): Old input reload blocks input_addr.
712:
713: Sat Jan 5 18:32:15 1991 Richard Stallman (rms at mole.ai.mit.edu)
714:
715: * Makefile.in (mostlyclean): New name for old `clean'.
716: (clean): Deletes gnulib also.
717: (cleanconfig): Need not delete gnulib here.
718:
719: * reload.c (push_reload): Don't use dying reg unless operand fits.
720:
721: * c-parse.y (yylex): Hex and octal constants now traditionally signed.
722:
723: Sat Jan 5 18:03:50 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
724:
725: * regclass.c (regclass): reg_n_sets is one per set. It does not
726: take into account loop_depth. So don't adjust by loop_depth here.
727:
728: Fri Jan 4 13:18:07 1991 Richard Stallman (rms at mole.ai.mit.edu)
729:
730: * function.c (put_var_into_stack): Don't mung virtual reg.
731: (fix_lexical_addr): Accept the virtual arg pointer.
732: * function.h (struct var_refs_queue): New structure.
733: (struct function): Use that for the pending var refs queue.
734:
735: * print-tree.c (print_node): Nicer format for rtl of decls.
736:
737: * c-decl.c (push_c_function_context, pop_c_function_context):
738: No need to deal with current_function_decl.
739:
740: * c-parse.y (nested_function): Delete spurious nonterminal.
741:
742: Fri Jan 4 12:13:14 1991 Michael Tiemann (tiemann at cygnus.com)
743:
744: * cplus-class.c (modify_vtable_entries): In case we are modifying
745: the main vtable, start with the vtable that comes from the immediate
746: baseclass, not the most base class. This is needed because later
747: fixups (for non-first and virtual baseclasses) do not fix up this
748: case.
749:
750: Fri Jan 4 06:55:00 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
751:
752: * optabs.c (expand_binop): Fix typo in testing for SImode operation.
753: Generalize to apply in more cases by calling emit_store_flag rather
754: than doing the gen_sltu explicitly.
755:
756: * expmed.c (store_bit_field, extract_bit_field): When insv/extv
757: don't allow MEM and we need to load the field into a register, don't
758: use the mode of OP0 if it is wider than the mode to be used for
759: insv/extv operating on a register.
760:
761: * expmed.c (emit_stor_flag): Try to convert some comparisons with
762: 1 and -1 to comparisons with zero.
763: Explicitly test sign bit of STORE_FLAG_VALUE rather than testing it
764: for being less than zero.
765:
766: * cse.c (find_comparison_args): Don't compute STORE_FLAG_VALUE < 0;
767: instead, test the relevant sign bit.
768: Use GET_RTX_CLASS instead of comparison_code_p.
769: * loop.c (get_condition): Likewise.
770:
771: * recog.c (validate_change): Eliminate duplicate code by always
772: saving the change. If in_group == 0, call apply_change_group.
773: (apply_change_group): If recog_memoized fails, see if we have a
774: CLOBBER at the end. Use validate_change to replace the pattern
775: with one without the CLOBBER if so; later we will verify that change.
776:
777: * tree.c (stabilize_reference_1): Now static; also, define as forward
778: reference at start of file.
779:
780: * rtl.def: Add new field in DEF_RTL_EXPR macro to give the "class"
781: of the rtx operation.
782: * rtl.h: DEF_RTL_EXPR has one additional arg.
783: (rtx_class, GET_RTX_CLASS): New var and macro.
784: * rtl.c: DEF_RTL_EXPR has one additional arg.
785: (rtx_class): Initialize table.
786:
787: * reload.c (push_reload): If an input operand contains a dead
788: register used nowhere else in the insn, try to use it as a reload reg.
789: * reload1.c (reload_as_needed): If cancelling optional reload,
790: clear reload_reg_rtx.
791: (choose_reload_regs): If we can find reload value lying around,
792: use that register unless choice made by find_reloads would also save
793: an insn (the new choice added above won't).
794:
795: * genoutput.c: Update comments on things written. Change order to
796: agree with the order written.
797: (output_epilogue): Remove extraneous tests.
798:
799: Thu Jan 3 13:32:54 1991 Richard Stallman (rms at mole.ai.mit.edu)
800:
801: * rtl.c (read_rtx): Cast NULL vector.
802:
803: * By Jim Wilson.
804: * tree.c (stabilize_reference): Modified to call stabilize_reference_1
805: instead of save_expr.
806: (stabilize_reference_1): New function. For arithmetic operator trees,
807: recurse on the subtrees. Otherwise, put a SAVE_EXPR around the
808: tree if it has side-effects.
809:
810: Thu Jan 3 12:37:56 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
811:
812: * reload1.c (choose_reload_regs): Only set reload_when_needed to
813: RELOAD_FOR_OUTPUT or RELOAD_FOR_INPUT when it used to be RELOAD_OTHER.
814:
815: Wed Jan 2 18:28:23 1991 Richard Stallman (rms at mole.ai.mit.edu)
816:
817: * emit-rtl.c (init_emit_once): Fix typo setting constm1_rtx.
818:
819: Wed Jan 2 07:53:04 1991 Michael Tiemann (tiemann at cygnus.com)
820:
821: * sparc.md (fix_truncdfsi2 recognizer): xoperands must have 3
822: elements because `output_fp_move_double' can write to operands[2].
823:
824: Wed Jan 2 17:16:20 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
825:
826: * calls.c (emit_call_1): If we have call_pop, use it if we have
827: no stack arguments.
828:
829: * out-vax.c (relational_op): Deleted, redundant.
830: * vax.md (branch): Use comparison_operator (in recog.c) instead of
831: relational_op.
832: * tm-vax.h (PRINT_OPERAND_PUNCT_VALID_P): "C" is not punctuation.
833:
834: * reload1.c (reload_as_needed, forget_old_reloads_1): Don't clear
835: reg_has_output_reload and reg_is_output_reload for each insn, just
836: ones that need reload. Instead, interpret each entry as zero if
837: n_reloads == 0.
838:
839: Wed Jan 2 15:52:13 1991 Richard Stallman (rms at mole.ai.mit.edu)
840:
841: * optabs.c (expand_binop): Fix typos.
842:
843: * toplev.c (rest_of_compilation): Clear cse_not_expected after loop.
844: * rtl.h (cse_not_expected): Declare here.
845: * expr.h: Not here.
846:
847: Tue Jan 1 21:55:11 1991 Richard Stallman (rms at mole.ai.mit.edu)
848:
849: * emit-rtl.c (constm1_rtx): New standard constant.
850: (gen_rtx): Use it when appropriate.
851: (init_emit_once): Initialize it.
852:
853: * out-vax.c (split_quadword_operands): New function.
854: (relational_op): Likewise.
855: * vax.md (extendsidi2, adddi3, subdi3): New patterns.
856: (movdi): Use clrq when appropriate.
857: (movaq recognizer): New pattern.
858:
859: * recog.h (OUT_FCN): New macro.
860: * genoutput.c: Include recog.h in output file. No
861: longer define "const", since that happens in recog.h.
862:
863: * tm-vax.h (PRINT_OPERAND): Add 'C' to print a reversed condition.
864: * out-vax.c (rev_cond_name): Return its name.
865: * vax.md (unnamed patterns): Combine several reversed branch patterns
866: into one, using match_operator with relational_op and "%C".
867:
868: * optabs.c (expand_binop): Handle multi-word addition and subtraction.
869:
870: * Makefile.in (install-gnulib): Use RANLIB_TEST. Use libg_dir.
871: (libg_dir): New customization variable.
872:
873: * assert.h (__assert): Use standard GNU format for error messages.
874:
875: Tue Jan 1 21:25:00 1991 Richard Kenner (kenner at vlsi1)
876:
877: * reload1.c (eliminate_regs, case PLUS): Always move constant to the
878: outside of a PLUS expression.
879:
880: Tue Jan 1 11:45:22 1991 Richard Stallman (rms at mole.ai.mit.edu)
881:
882: * ecoff-cmp: Specify `c' in option to tail.
883:
884: * stor-layout.c (layout_record, layout_union, layout_type):
885: Use ROUND_TYPE_ALIGN and ROUND_TYPE_SIZE to compute
886: alignment and size of records, unions and arrays.
887: * ROUND_TYPE_ALIGN: New. Args are type, spec'd align, other min align.
888: * ROUND_TYPE_SIZE: New. Args are type, size of contents, align.
889:
890: * reload1.c (emit_reload_insns) [PRESERVE_DEATH_INFO_REGNO_P]:
891: Scan output and output-address reloads together.
892: Check for matching hard reg.
893:
894: * config.gcc: Set proper shell vars in big dispatch. Not `machine'.
895: (i386-isc): New alternative.
896:
897: Tue Jan 1 08:29:49 1991 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
898:
899: * reorg.c (update_block): Turn bb_tick update back on; it is needed,
900: after all.
901:
902: Mon Dec 31 18:12:07 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
903:
904: * genattrtab.c (write_test_expr, case EQ_ATTR): Use correct expression
905: number for attribute value.
906:
907: * cse.c (cse_insn): Use single_set when looking for an insn that sets
908: cc0 followed by one that no longer does.
909:
910: * recog.c (find_single_use): If the next insn after one that sets
911: cc0 is not an INSN or JUMP_INSN, return 0; don't blow up on a NOTE.
912:
913: * emit-rtl.c (emit_insn_before, emit_insn_after, emit_insn): Return
914: something sensible if a SEQUENCE of length zero was passed.
915: We no longer make a SEQUENCE with XVEC == 0, so don't test for it.
916:
917: * reload1.c (emit_reload_insns): Handle gen_move_insn returning
918: no insns (occurs on RT for dummy registers).
919:
920: * rtl.h (reg_cc0_rtx, find_cc): No longer needed.
921: * emit-rtl.c: Likewise.
922: * conditions.h: Entire file is #ifdef HAVE_cc0.
923: * final.c (CC_STATUS_INIT): Make a null default #ifndef HAVE_cc0.
924: (cc_status): No longer exists #ifndef HAVE_cc0.
925: (final_scan_insn): Do CC processing only #ifdef HAVE_cc0.
926: (alter_cond): Only exists #ifdef HAVE_cc0.
927: * genemit.c (gen_exp): No longer have CC0_REGNUM or reg_cc0_rtx.
928: * genoutput.c (main): Include insn-config.h before conditions.h.
929: * reorg.c: Likewise.
930: * jump.c (rtx_equal_for_thread_p): Remove reference to CC0_REGNUM;
931: we'll have to do this optimization some other way later.
932: * tm-a29k.h (NOTICE_UPDATE_CC): Deleted.
933:
934: Mon Dec 31 14:44:31 1990 Richard Stallman (rms at mole.ai.mit.edu)
935:
936: * reload.h (enum_reload_when_needed):
937: New alternatives RELOAD_FOR_OUTPUT, RELOAD_FOR_INPUT.
938: * reload1.c (choose_reload_regs): Use those when appropriate.
939: (mark_reload_reg_in_use): Record this usage specially.
940: (reload_reg_free_p, reload_reg_free_before_p): Handle this usage.
941: (reload_reg_reaches_end_p): Likewise.
942: (emit_reload_insns): Treat RELOAD_FOR_INPUT like RELOAD_OTHER.
943:
944: * i386.md (push for SFmode): Operand of fst was missing.
945:
946: Mon Dec 31 08:50:17 1990 Craig Burley (burley at pogo.ai.mit.edu)
947:
948: * stor-layout.c (layout_type): For ARRAY_TYPE case, don't try
949: and compute a size if there is no TYPE_MAX_VALUE for the index.
950: * tree.c, tree.h (build_index_2_type): New function, like
951: build_index_type except it accepts the low value as an arg instead
952: of assuming 0.
953:
954: Mon Dec 31 08:09:10 1990 Michael Tiemann (tiemann at cygnus.com)
955:
956: * cplus-typeck.c (c_expand_return): Handle case when we try
957: to return a void value (such as a void function call) in a
958: function returning void, and there are cleanups to run.
959:
960: Sun Dec 30 21:08:32 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
961:
962: * tm-a29k.h (TARGET_VERSION): Can't use target_flags since we can
963: be called from gcc.c.
964:
965: * tm-rs6000.h (REG_ALLOC_ORDER): Put r12 after r13; it might be
966: holding a DImode value and so might be very expensive (we won't
967: worry about TImode).
968:
969: * rs6000.md (subtract patterns): Fix incorrect operand number in %I.
970: (movti): Disallow indexed memory operands.
971:
972: * out-rs6000.c (print_operand, case 'm'): Fix typo.
973: (includes_rshift_p): Correctly compute mask.
974:
975: * out-a29k.c (output_operand): Add missing parentheses.
976: (print_operand): Replace if/then/else structure with switch statement.
977:
978: * a29k.md (beq, bne): Try to use NE test whenever possible; it
979: will produce better code if we have bit-tests.
980:
981: Sun Dec 30 12:02:03 1990 Michael Tiemann (tiemann at cygnus.com)
982:
983: * tm-sparc.h (PRINT_OPERAND): Put 'R' case before REG so that it
984: takes when 'R' is passed in as CODE. Also, handle 'B' letter.
985:
986: * sparc.md: (pattern for converting DFmode to SImode): Second
987: argument to `output_asm_insn' should be `operands', not zero.
988: (tablejump): The jump insn is "jmp", not "jump".
989: (gen_fixtruncdfsi2): operands[2] should get the pseudo, not
990: operands[3] (which is nonexistent).
991: (call): Fix typo which had %o7 being emitted as %o.
992: (various patterns): Fixed places where match_operand had the wrong
993: operand number.
994:
995: Sat Dec 29 17:27:00 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
996:
997: * sparc.md: cc_status no longer handles condition code updates.
998: Instead, condition codes are explicitly set and used via
999: hard register 0. Special attributes specific to condition codes
1000: (such as whether conditional branches should test the integer or
1001: floating-point condition codes, or that the condition codes cannot
1002: be tested for a condition which would test the overflow bit) are
1003: handled by encoding the attribute in the mode for the condition
1004: code register.
1005: (type attributes): type "unary" insns have one input operand (1)
1006: and one output operand (0)
1007: type "binary" insns have two input operands (1,2) and one output (0)
1008: type "compare" insns have one or two input operands (0,1) and no output
1009: type "move" and type "arith" have been deleted.
1010: (prescan attribute): Deleted. Machine description now puts
1011: floating-point zero in registers when needed.
1012: (use_cc attribute): Deleted.
1013: (fpcc define_delay): No longer depend on "use_cc" attribute.
1014: Also, fpcc delay characteristics hold for "fpcc" type insns.
1015: (cc attribute): Deleted.
1016: (cmpxx patterns): Now written as `define_expand's so we can stow
1017: away operands. When the pattern that will use the results of the
1018: conditional test is emitted, it can use these operands to figure
1019: out the right way to emit the compare.
1020: (bcc patterns): Rewritten to emit comparison (based on stowed-away
1021: info) before emitting branch.
1022: (scc patterns): Handle all the cases with branch-free code.
1023: Added new pattern to recognize (x + (i == 0)).
1024: (movsi pattern recognizer): Split into two patterns so that e.g.
1025: "(set:SI (mem:SI ...) (const_int 5))" is never considered valid.
1026: Instead this has to be a two-insn sequence.
1027: (mov{hq}i pattern recognizers): Ditto.
1028: (movstrsi): Force operands[2] out of memory if it was in memory.
1029: ({zero,sign}_extendXY): Now written as `define_expand's instead of
1030: `define_insn's for more accurate machine modeling.
1031: Added new pattern to optimize bit-field compares.
1032: (floatsisf2 patterns): Delete redundant setting of "in_call_delay"
1033: attribute.
1034: (fix_trunc{sf,df}si2 pattern): Use clobberable register in which
1035: the conversion can take place. Used to use %f30,%f31.
1036: ({add,sub}di3 pattern): Put explicit clobber of (reg 0) in the
1037: pattern.
1038: (negdi2 pattern): Ditto.
1039: Added new patterns to handle merging of addition/subtraction with
1040: condition code testing (with (reg:CC_NOOV 0)).
1041: ({and,ior,xor}cbsi3 pattern): Obsolete. Deleted.
1042: Added patterns to represent setting of condition codes in addition
1043: to performing logical operations.
1044: ({neg,abs}df2 pattern): Use `R' print letter to overcome the need
1045: to use a C action instead of a simple template.
1046: (ash{l,r}{hi,qi}3): Define patterns for shifts on sub-SImode
1047: operands.
1048: (jump pattern): Use `*' print code to obviate the need for a C
1049: action when a template can do.
1050: (tablejump pattern): Ditto, with `^' code as well.
1051: Deleted `define_split's that were used to handle mem-mem moves in
1052: the case of PIC generation. Since all move insns are emitted and
1053: maintained as SPARC-valid insns, these should no longer be needed.
1054: (various patterns): (HI ...) is spelled (HI:SI ...). Also, use
1055: `gen_lowpart' instead of building subregs directly.
1056: New `define_split's were added to split scc insns into simpler
1057: components which have single-insn templates.
1058: Fixed a return peephole when returning a SFmode value (it was
1059: missing the "ret"!).
1060: Lots of complicated peepholes that brought cc testing and
1061: arithmetic operations together were deleted. This is because the
1062: combiner should now handle all these cases.
1063:
1064: * out-sparc.c (sparc_compare_op{0,1}): New global variables.
1065: Used to hold the operand(s) to compare insns in lieu of emitting a
1066: compare.
1067: (reg_or_cc0_operand): Deleted.
1068: (normal_comp_operator): New function.
1069: (cc_arithop): Now returns 0 for PLUS and MINUS.
1070: (cc_arithopn): Now returns 0 for XOR.
1071: (gen_compare_reg): New function.
1072: (sparc_address_cost): Simplified because it turns out it doesn't
1073: matter what is returned for illegitimate addresses.
1074: (hard_regno_mode_ok): Updated to use these new #defines.
1075: (C_MODES): New #define, for condition code modes.
1076: (S_MODES): Ditto, for single-word (and smaller) quantities.
1077: (D_MODES): Ditto, for double-word (and smaller) quantities.
1078: (T_MODES): Ditto, for tetra-word (and smaller) quantities.
1079: (SF_MODES): Ditto, for SFmode quantities.
1080: (DF_MODES): Ditto, for SF_MODE, DFmode, SCmode, etc.
1081: (TF_MODES): Ditto, for DF_MODE, TFmode, DCmode, etc.
1082: (output_floatsi{df,sf}2): Greatly simplified.
1083: (output_pic_sequence,output_pic_sequence_2,fp_zero_hook,
1084: output_tail_call): Turned off.
1085:
1086: * tm-sparc.h (ASM_SPEC): Pass `-k' to assembler if compiling PIC.
1087: (WORDS_BIG_ENDIAN): Define as 1, not 0.
1088: (FIXED_REGISTERS): %f30 and %f31 are now allocatable.
1089: (REG_CC0_RTX, CC0_REGNUM): Deleted.
1090: (EXTRA_CC_MODES): New modes CC_NOOVmode and CCFPmode. The former
1091: is for when the overflow bit it not to be tested; the latter is
1092: for when the condition is sitting in the floating point unit.
1093: (SELECT_CC_MODE): New macro.
1094: (FINAL_PRESCAN_INSN): Deleted.
1095: (CC_* macros): Deleted.
1096: (PRINT_OPERAND_PUNCT_VALID_P): New valid chars are '#' (for
1097: whether to print a noop or not), '*' (for whether to print a ",a"
1098: or not), and '^' (for whether to emit code for PIC branch or not).
1099: (PRINT_OPERAND{,_ADDRESS}): Replace calls to fprintf by calls to
1100: fputs where that is convenient.
1101:
1102: * expr.h, cplus-dbxout.c: #ifdef BYTES_BIG_ENDIAN should be #if.
1103:
1104: * reload.c (struct replacement): Add new field subreg_loc.
1105: (push_reload): If reloading SUBREG_REG of a paradoxical SUBREG,
1106: store the location of the SUBREG in subreg_loc in REPLACEMENTS.
1107: (push_replacement): Initialize subreg_loc.
1108: (subst_reloads): Don't produce nested SUBREGs; use subreg_loc.
1109:
1110: * regclass.c (regclass): Handle (set X (op CONST Y)) properly when
1111: the modes of operands 0 and 1 are different.
1112:
1113: Sat Dec 29 16:37:10 1990 Richard Stallman (rms at mole.ai.mit.edu)
1114:
1115: * cccp.c (macroexpand): Test traditional when computing expansion size.
1116:
1117: * toplev.c (compile_file):
1118: If profiling, leave some space after `gcc_compiled.'.
1119: * tm-m88k.h, tm-sparc.h, tm-sun386i.h (ASM_IDENTIFY_GCC): Deleted.
1120:
1121: * reload1.c (emit_reload_insns): Set reg_reloaded_contents, etc, here.
1122: (choose_reload_regs): Not here--except for reg_has_output_reload.
1123:
1124: * c-parse.y (nested_function, notype_nested_function):
1125: Use compstmt for body, not compstmt_or_error.
1126:
1127: * Makefile.in (install-headers): Use basename on
1128: * stupid.c (stupid_mark_refs): Really do mark clobbered hardreg
1129: live before the insn.
1130:
1131: Fri Dec 28 05:44:10 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1132:
1133: * emit-rtl.c (subreg_lowpart_p): Use correct modes in
1134: WORDS_BIG_ENDIAN case.
1135:
1136: * reload.c (combine_reloads): Don't try to reference
1137: insn_operand_constraint for an ASM insn.
1138: Fix typo in testing for modified operand.
1139:
1140: Thu Dec 27 19:02:54 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1141:
1142: * cse.c (cse_insn): Ensure we invalidate SET_DEST if SET_SRC is a CALL.
1143:
1144: * cse.c (fold_rtx): Save mode of original first operand in case this
1145: is becoming (sign_extend (const_int)).
1146:
1147: Thu Dec 27 16:15:56 1990 Tom Wood (wood at dg-rtp.dg.com)
1148:
1149: * m88k.md, out-m88k.c (CCmode): Use it.
1150: (emit_bcnd): Avoid loosing when bcnd is changed into sxx.
1151: (hi16/lo16): Don't use these to form 16-bit immediate values.
1152: Introduce and use %X/%x.
1153: (length attribute): Make better use of defaults.
1154:
1155: * tm-v88r32.h (LIB_SPEC): Goes here rather than in xm-v88r32.h.
1156: * xm-*88*.h: Clean these up. Most differences go away by relying
1157: on the 88open standards.
1158:
1159: Thu Dec 27 12:48:26 1990 Richard Stallman (rms at mole.ai.mit.edu)
1160:
1161: * expmed.c (store_bit_field, extract_bit_field):
1162: Change #ifdef to #if, testing BYTES_BIG_ENDIAN.
1163:
1164: Thu Dec 27 07:36:45 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1165:
1166: * reorg.c (find_end_label): Ignore USE and CLOBBERs when looking for
1167: label at end of function.
1168:
1169: Wed Dec 26 22:35:59 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1170:
1171: * emit-rtl.c (sequence_element_free_list, sequence_result): New vars.
1172: (restore_emit_status, init_emit): Initialize them.
1173: (emit_insn_before, emit_insn_after, emit_insn): Save SEQUENCE in
1174: sequence_result.
1175: Make these three routines more alike in structure.
1176: (start_sequence, end_sequence, push_to_sequence): Cache INSN_LIST pairs
1177: in sequence_element_free_list rather than making new ones.
1178: (start_sequence): No longer return unused rtx; only one caller
1179: needed to be changed (in function.c, see below).
1180: (end_sequence): No longer has argument.
1181: (gen_sequence): Try obtaining a pre-built SEQUENCE from
1182: sequence_result; no longer special-case length 0 vectors.
1183: * function.c (fixup_memory_subreg): start_sequence no longer
1184: returns an rtx and end_sequence no longer has an argument.
1185: * rtl.h (start_sequence): Now void.
1186: (push_to_sequence, end_sequence): Define.
1187:
1188: Wed Dec 26 13:19:40 1990 Richard Stallman (rms at mole.ai.mit.edu)
1189:
1190: * gnulib.c: No longer #undef perform_* if not __GNUC__.
1191: (perform_*): Define each if not already def.
1192:
1193: Tue Dec 25 17:31:17 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1194:
1195: * loop.c (get_condition): Rework scan that looks for sets of things
1196: being compared to allow intervening insns; check to ensure that
1197: they don't set something that we need. Return 0 if the best we can
1198: do is find something whose mode is in class MODE_CC.
1199:
1200: * calls.c (emit_call_1): RETURN_POPS_ARGS now gets the length of
1201: arguments on the stack and returns the number of bytes popped by the
1202: called function.
1203: * output.h (current_function_pops_args): Change description.
1204: * function.c (current_function_pops_args): Likewise.
1205: (assign_parms): Initialize current_function_pops_args here.
1206: (init_function_start): Not here.
1207: * tm-*.h (RETURN_POPS_ARGS): Reflect new meaning.
1208: (FUNCTION_EPILOGUE): Use new meaning of current_function_pops_args.
1209: * out-i386.c (function_epilogue): Likewise.
1210:
1211: Tue Dec 25 15:52:06 1990 Richard Stallman (rms at mole.ai.mit.edu)
1212:
1213: * gnulib.c (all functions): Support a hook for redefining contents.
1214: These hooks are called perform_addsi3, and so on.
1215: They are used only if compiling with GCC.
1216:
1217: * rtlanal.c (single_set): Moved from loop.c.
1218:
1219: * cse.c (fold_rtx): For a MEM, fold address when looking for constant.
1220: (cse_insn): When fetch a constant label from a dispatch,
1221: substitute into following tablejump.
1222: (find_best_addr): Clear do_not_record before hashing.
1223: * jump.c (mark_jump_label): Don't record table-labels on non-jumps.
1224:
1225: * m68k.md (casesi_2 recognizer): Use register_operand as predicate.
1226:
1227: Mon Dec 24 17:54:42 1990 Richard Stallman (rms at mole.ai.mit.edu)
1228:
1229: * cse.c (fold_rtx): Handle ADDR_DIFF_VEC like ADDR_VEC,
1230: when the index in it is constant.
1231:
1232: * c-decl.c (start_function): Handle new option -Wmissing_prototypes.
1233: (c_decode_option): Likewise.
1234:
1235: Mon Dec 24 07:21:06 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1236:
1237: * rtl.h (reload_completed, reload_in_progress): Now defined here.
1238: * output.h (reload_completed): No longer defined here.
1239: * emit-rtl.c, optabs.c, recog.c, sched.c, toplev.c, out-a29k.c:
1240: Don't define reload_in_progress or reload_completed.
1241: * a29k.md, romp.md, rs6000.md: Likewise.
1242:
1243: * machmode.def: Terminate GET_MODE_WIDER_MODE chains with VOIDmode,
1244: not zero.
1245: (CCmode): New mode.
1246: * machmode.h (enum machine_mode): Includes modes in EXTRA_CC_MODES,
1247: if defined.
1248: (enum mode_class): New class MODE_CC; delete MODE_FUNCTION.
1249: * rtl.c (mode_name): Define to be known size; add names for extra
1250: CC modes, if present.
1251: (mode_class, mode_size, mode_unit_size, mode_wider_mode): Define
1252: to be known size.
1253: (init_rtl): Initialize extra CC modes.
1254:
1255: Sat Dec 22 19:33:54 1990 Richard Stallman (rms at mole.ai.mit.edu)
1256:
1257: * tm-i386v.h (MAXPATHLEN): Define if not already defined.
1258: * tm-i386vgas.h: New file.
1259:
1260: * out-i386.c (print_operand_address): Handle scaled indexing.
1261:
1262: Sat Dec 22 11:15:03 1990 Tom Wood (wood at dg-rtp.dg.com)
1263:
1264: * m88k.md, out-m88k.c, tm-m88k.h (swapped cmpsi): Don't rely on
1265: NOTICE_UPDATE_CC doing the job. Instead, compliment the swapped
1266: compare. Also, make COMPARE SImode.
1267: (and/cmpsi/sxx/neg): Add patterns to do this in one instruction.
1268: Change sign_extend/sxx to neg/sxx for other cases.
1269: (iorsi3/xorsi3): Use alternatives and explicit patterns.
1270: (casesi): Make the constant the second operand to cmpsi.
1271: (output_and): Must compliment value to use the clr instruction.
1272: (output_reg_adjust): Simplify the interface and use TEMP_REGNUM.
1273: (TARGET_SWITCHES): Eliminate needless no-* options.
1274:
1275: Fri Dec 21 05:46:34 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1276:
1277: * recog.c (find_single_use{,_1}): New functions.
1278: * rtl.h (find_single_use): Declare it.
1279:
1280: Thu Dec 20 21:27:36 1990 Richard Stallman (rms at mole.ai.mit.edu)
1281:
1282: * optabs.c (init_optabs): Add __ to names of floating compare fcns.
1283:
1284: Thu Dec 20 18:21:38 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1285:
1286: * expr.c (expand_builtin, case BUILTIN_FFS): Get mode for arg from
1287: tree, not rtx, in case arg was CONST_INT.
1288:
1289: Thu Dec 20 17:31:46 1990 Richard Stallman (rms at mole.ai.mit.edu)
1290:
1291: * c-decl.c (init_decl_processing): Don't define `ffs'.
1292:
1293: Wed Dec 19 16:59:38 1990 Richard Stallman (rms at mole.ai.mit.edu)
1294:
1295: * gcc.c (main): Handle if SIGPIPE not defined.
1296:
1297: * cccp.c (xmalloc, xrealloc, xcalloc): Don't declare malloc or realloc.
1298:
1299: Wed Dec 19 06:50:17 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1300:
1301: * combine.c (gen_lowpart_for_combine): Avoid making a nested SUBREG
1302: when we are being passed a paradoxical SUBREG of MEM.
1303:
1304: * cse.c (new_basic_block): Compilations spend about 5% of their time
1305: in this function so replace loop initializing qty_{first,last}_reg
1306: with copy from a larger consec_ints. Only loop over extra entries.
1307: (cse_main): Allocate consec_ints to be default size of max_qty large.
1308:
1309: * reorg.c (get_branch_condition): Fix typos when reversing condition.
1310: (condition_dominates_p): Fix typo in comparison.
1311: (redundant_insn_p): This function was taking about 4% of the
1312: compilation time. Rework so it doesn't split, only looks at resource
1313: usage if it finds a matching insn (since it usually won't), and
1314: improve code that looks at resources. Now takes about 0.5% of
1315: compilation time.
1316: (fill_simple_delay_slots): Always call mark_target_live_regs with an
1317: active insn; currently being called with a CODE_LABEL.
1318:
1319: Tue Dec 18 14:08:11 1990 Richard Stallman (rms at mole.ai.mit.edu)
1320:
1321: * out-sparc.c: Fix uninitiated comment.
1322:
1323: * final.c (end_final): Call strip_off_ending to remove the file
1324: name suffix.
1325: (final_start_function): Execute SDB_DEBUGGING_INFO code only if
1326: generating SDB symbol info.
1327:
1328: * Makefile.in (cccp.o): Depend on gcc.
1329:
1330: * tm-sparc.h, xm-sparc.h: Make this machine big-endian.
1331:
1332: * expr.c (expand_builtin): Pass correct arguments to gen_cmpstrsi4.
1333:
1334: * recog.c (nonmemory_operand): Reject reg whose class is NO_REGS.
1335:
1336: * c-decl.c (finish_struct, grokdeclarator):
1337: Strip NON_LVALUE_EXPR more than once.
1338:
1339: * combine.c (combine_instructions): Check that a jump insn uses CC0
1340: before trying to combine it with an insn that sets CC0.
1341:
1342: * cplus-decl.c, cplus-search.c, gcc.c, objc-actions.c, rtl.c, stmt.c,
1343: symout.c, toplev.c: Use xmalloc instead of malloc.
1344:
1345: * cccp.c (do_include): Check for truncation of precompiled file name.
1346:
1347: Mon Dec 17 16:53:46 1990 Richard Stallman (rms at mole.ai.mit.edu)
1348:
1349: * c-typeck.c (build_binary_op_nodefault, build_conditional_expr):
1350: Fix indentation.
1351: * reload1.c (choose_reload_regs): Fix indentation.
1352: (gen_input_reload): Fix typo in comment.
1353:
1354: * reload.c (find_reloads): Call abort when the last operand is
1355: marked commutative, to make it easier to find this error.
1356:
1357: * rtlanal.c (refers_to_regno_p): Don't crash if X is 0.
1358:
1359: Mon Dec 17 15:29:34 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1360:
1361: * local-alloc.c (combine_regs): No need to see if suggested hard reg
1362: is suitable; if it isn't, it won't end up being used. Existing tests
1363: were too conservative.
1364:
1365: * jump.c (delete_jump): When searching for the SET of the condition
1366: codes for a jump insn, give up if we hit a SEQUENCE.
1367:
1368: Mon Dec 17 02:14:06 1990 Richard Stallman (rms at mole.ai.mit.edu)
1369:
1370: * c-typeck.c (c_size_in_bytes): New function.
1371: (pointer_int_sum, pointer_diff): Use that.
1372: (pointer_diff): Handle warn_pointer_arith.
1373:
1374: Sun Dec 16 22:27:11 1990 Richard Stallman (rms at mole.ai.mit.edu)
1375:
1376: * c-decl.c (start_decl): Ignore with error any init for a parm.
1377: (finish_decl): Likewise.
1378:
1379: Sun Dec 16 01:02:57 1990 Michael Tiemann (tiemann at cygnus.com)
1380:
1381: * jump.c (rtx_equal_for_thread_p): Treat the special CC register as
1382: equivalent for the two threads we are looking at.
1383:
1384: * combine.c (try_combine): Fix typo in loop over I1 with PARALLEL
1385: body. Also, don't test HARD_REGNO_MODE_OK for hard registers we are
1386: thinking about combining. This screws up using registers to
1387: represent the condition codes, and probably doesn't save anything in
1388: the general case.
1389:
1390: * expmed.c (expand_and): Comment says that result is always stored
1391: in target, so the code now does this.
1392:
1393: Sat Dec 15 18:09:46 1990 Michael Tiemann (tiemann at cygnus.com)
1394:
1395: * loop.c (get_condition): Try a little harder to find the setter of
1396: the register used in a conditional test. On the SPARC it is vital
1397: to either find the setter of the register used for the condition
1398: codes or for this function to return 0. Also, have test for
1399: non-NULL, matching `set' govern both normal and reversed cases of
1400: comparisons.
1401:
1402: * jump.c (jump_optimize): When moving USE insns from before jumps to
1403: after BARRIERs, put the label for the redirected jump after the
1404: BARRIER instead of just before the PREV_INSN of the original target.
1405: This gets around problems when there are NOTEs between the BARRIER
1406: and the original target.
1407:
1408: Sat Dec 15 10:16:29 1990 Michael Tiemann (tiemann at cygnus.com)
1409:
1410: * sparc.md (cmpdf,cmpsf): No longer a define expand. Now depends
1411: on fp zero being loaded into a register.
1412: (tstsi,tstdf,tstsf): Deleted.
1413: (seq,sne): Fail if we are not testing operands of integer mode.
1414: (movsi): Split recognizers into two parts. The first handles
1415: [reg,mem,zero] <=> [reg,mem]; the second handles [reg,const] =>
1416: [reg].
1417: (adddf,subdf,negdf): Simplify output routines using 'R' as an
1418: output letter.
1419: (tail_call): Turn this off. It is never used, and it depends on
1420: routines which are about to become broken.
1421: (various places): Add USE_CC attribute where appropriate.
1422: (various places): Change (use (reg:SI 0)) to (clobber (reg:SI 0))
1423: and delete CC_CLOBBER attribute from the pattern.
1424: * out-sparc.c (move_operand): No longer recognize certain
1425: immediates as a `move_operand'.
1426: (move_reg_or_immed_operand): New recognizer for immediates no
1427: longer recognized by `move_operand'.
1428: (output_pic_sequence*): Turned off.
1429: (sparc_address_cost): Simplified, since the value returned is not
1430: used if the address is not legitimate.
1431: (emit_move_sequence): Use `gen_lowpart' instead of building
1432: SUBREGs explicitly.
1433: (make_f30_contain_zero): Deleted.
1434: (output_tail_call): Turned off.
1435: * tm-sparc.h (PRINT_OPERAND): Recognize 'R' code letter, which
1436: means print the name of REGNO (X)+1. No longer recognizes the 'G'
1437: letter.
1438: (PRINT_OPERAND,PRINT_OPERAND_ADDRESS): Replace various calls to
1439: fprintf with calls to fputs or fputc.
1440: (FINAL_PRESCAN_INSN): No longer defined.
1441:
1442: Sat Dec 15 14:37:51 1990 Richard Stallman (rms at mole.ai.mit.edu)
1443:
1444: * recog.c (offsettable_address_p): Check validity in narrower modes.
1445:
1446: Sat Dec 15 11:21:55 1990 Tom Wood (wood at dg-rtp.dg.com)
1447:
1448: * syms.h sdbout.c (T_VOID): Ensure that T_VOID is provided a
1449: default meaning if <syms.h> is used.
1450:
1451: Fri Dec 14 14:39:10 1990 Tom Wood (wood at dg-rtp.dg.com)
1452:
1453: * m88k.md (increment and test peephole): Updated so it would apply
1454: with the new method for doing cmpsi/bxx.
1455: * m88k.md (function units): Replace decode with alu and update
1456: accordingly.
1457: * out-m88k.c (emit_test): Add a mode parameter.
1458: * tm-m88k.h (GO_IF_LEGITIMATE_ADDRESS): Constrain how the arg
1459: pointer can be used.
1460:
1461: Fri Dec 14 06:48:07 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1462:
1463: * expr.c (convert_move): Add missing argument to some recursive calls.
1464:
1465: * jump.c (invert_jump): Pass new label to recursive call.
1466:
1467: * expr.h (setcc_gen_code): Replaces setcc_gen_fctn; stores insn_code.
1468: (expand_and, emit_store_flag, label_rtx): Add definitions.
1469: (get_condition, compare_from_rtx): Likewise.
1470: * rtl.h (STORE_FLAG_VALUE): Provide a default value of 1.
1471: (reg_set_last): Add definition.
1472: (const_true_rtx): New variable.
1473: * cse.c: Remove defaulting of STORE_FLAG_VALUE from here.
1474: (const_true_rtx): Remove static version; now global.
1475: * emit-rtl.c (const_true_rtx): Define here.
1476: (gen_rtx): Return const_true_rtx for CONST_INT of STORE_FLAG_VALUE.
1477: (init_emit_once): Initialize const_true_rtx.
1478: * expmed.c (emit_store_flag): Rewritten. Is passed the operands
1479: to compare in addition to the compare operation and emits both the
1480: comparison and the store-flag insn.
1481: Handles special-case of testing for A < 0 and A >= 0.
1482: If result is constant, just return it.
1483: Accepts an argument saying how to normalize the result and does
1484: appropriate normalization.
1485: Give preference to using the sign bit rather than the low-order bit.
1486: Allow sxx insns to fail.
1487: If don't have seq or sne insns, can sometimes do with abs.
1488: * expr.c (expand_expr, case COND_EXPR): For X ? A + 1 : A, only
1489: do store_flag if it is cheap.
1490: (do_jump): True comparisons return STORE_FLAG_VALUE, not 1.
1491: (compare_constants): Correctly handle unsigned comparisons.
1492: Return STORE_FLAG_VALUE, not 1, for true comparison.
1493: (compare_from_rtx): New name for compare1.
1494: Accept size and alignment, for BLKmode.
1495: No longer statuc.
1496: (compare, compare_from_rtx): No need to pass forward and reverse codes;
1497: can trivially derive the reverse code from the forward one.
1498: All callers changed.
1499: If one operand is constant, make it the second one.
1500: (compare): Let compare1 do most of the work.
1501: (do_store_flag): Rewritten, now lets emit_store_flag do most of
1502: the work.
1503: Handles the special-case of comparing a single bit with zero.,
1504: Add additional argument ONLY_CHEAP; if non-zero, fail if it looks like
1505: this will be an expensive operation; all callers changed.
1506: If it looks like it will be possible to do a store-flag operation,
1507: call emit_store_flag; if it can't do it, emit as assignments and a
1508: jump. If it doesn't look possible to do a store-flag operation, return
1509: zero before expanding anything.
1510: * final.c: (final_scan_insn): Don't check STORE_FLAG_VALUE; if the
1511: insn doesn't exist, we won't try to change it.
1512: * genemit.c (gen_exp): Use const_true_rtx when appropriate.
1513: * genrecog.c (add_to_sequence): Likewise.
1514: (try_merge_1): Two nodes aren't identical if they are to test
1515: different modes or if they have different values of EXACT.
1516: * integrate.c: Don't supply a default value for STORE_FLAG_VALUE here.
1517: * jump.c: Now includes expr.h (for emit_store_flag and get_condition).
1518: (jump_optimize): Split optimization that made store-flag insn
1519: into three separate optimizations, the first two of which are useful
1520: even in the absence of store-flag operations.
1521: (can_reverse_comparison): Set and use of cc0 must be immediately
1522: adjacent.
1523: (mark_jump_label): Abort if LABEL_REF codesn't contain a CODE_LABEL.
1524: Consider two labels adjacent after reload if separated by just USE or
1525: CLOBBER insns.
1526: * loop.c: Now includes real.h.
1527: (get_condition_for_loop): New function. All callers of get_condition
1528: in this file now call this function.
1529: (strength_reduce): no_labels_between_p now skips FROM.
1530: (get_condition): No longer static.
1531: Refine cases when we can't reverse a comparison operation.
1532: * optabs.c (init_optabs): Initialize and define setcc_gen_code
1533: instead of setcc_gen_fctn.
1534: * rtlanal.c (no_labels_between_p): Skip FROM, like as ..._between_...
1535: functions do.
1536: (no_labels_between): Deleted.
1537: (reg_set_last, reg_set_last_1): New functions.
1538: * Makefile.in (jump.o): Now include expr.h.
1539: (loop.o): Now includes real.h.
1540:
1541: * c-tree.h (int_ftype_cptr_cptr_sizet, ptr_ftype_ptr_cptr_sizet):
1542: New names.
1543:
1544: * alliant.md, i386.md, m68k.md, m88k.md, ns32k.md, sparc.md: Add mode
1545: to comparison operators (EQ, NE, etc.) to agree with the mode of the
1546: destination.
1547: * out-m88k.c (emit_test): Likewise.
1548:
1549: Fri Dec 14 00:12:46 1990 Richard Stallman (rms at mole.ai.mit.edu)
1550:
1551: * c-decl.c (finish_struct): Strip NON_LVALUE_EXPR from field width.
1552:
1553: Thu Dec 13 13:10:47 1990 Richard Stallman (rms at mole.ai.mit.edu)
1554:
1555: * cplus-init.c (expand_vec_init): Add missing arg to
1556: expand_exit_loop_if_false.
1557:
1558: * config.gcc (tron): Alias for gmicro.
1559:
1560: * c-decl.c (int_ftype_cptr_cptr_sizet): Variable renamed.
1561: (ptr_ftype_ptr_cptr_sizet): Likewise.
1562:
1563: * gcc.c (default_compilers): Handle .C.
1564:
1565: * Makefile.in (enquire.o): Add -I. so can find stddef.h.
1566: (install-cross): Install cc1obj like the others.
1567:
1568: * Makefile.in (gnulib.target): Renamed from gnulib.
1569: (gnulib): Renamed from tmpgnulib. Rename that file in this rule.
1570: Also delete stamp-gnulib2 here.
1571: (gnulib.portable, gnulib.convert): Input now is named gnulib.
1572: (GNULIB_TARGET, GNULIB2_TARGET): Define these vars (already in use).
1573: (gnulib2.target): Renamed from gnulib2.
1574: (gnulib2): New rule, alias for gnulib2.target.
1575:
1576: * local-alloc.c (local_alloc): Cast an enum used as index.
1577: * optabs.c (emit_indirect_jump): Likewise.
1578: * reload1.c (choose_reload_regs): Likewise.
1579:
1580: Thu Dec 13 12:38:31 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1581:
1582: * expmed.c (store_bit_field): Verify that operand 1 of movstrict
1583: satisfies its predicate.
1584:
1585: Wed Dec 12 17:26:21 1990 Richard Stallman (rms at mole.ai.mit.edu)
1586:
1587: * gvarargs.h: Avoid duplicate inclusion using _VARARGS_H.
1588:
1589: Wed Dec 12 14:11:30 1990 Tom Wood (wood at dg-rtp.dg.com)
1590:
1591: * tm-m88k.h, out-m88k.c, m88k.md: Eliminated the fixed condition
1592: code register. As a temporary measure, NOTICE_UPDATE_CC is used
1593: to track swapped cmpsi cases.
1594:
1595: * m88k.md (shift patterns): Deal with TARGET_*_LARGE_SHIFT
1596: uniformly with define_expand. Make gen_lshlsi3 generate ASHIFT
1597: and eliminate the optimization patterns using ASHIFT. Eliminate
1598: other optimization patterns that will be handled by combine.
1599:
1600: Tue Dec 11 22:13:48 1990 Richard Stallman (rms at mole.ai.mit.edu)
1601:
1602: * expr.c (convert_move): With slt, handle dest that's invalid.
1603:
1604: * stmt.c, tree.h (stmt_nesting):
1605: Typedef deleted; use `struct nesting *'.
1606: * stmt.c (expand_start_cond): If exitable, make an exit label.
1607:
1608: Tue Dec 11 21:28:56 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1609:
1610: * combine.c (subst, case SUBREG): Update TO for earlier
1611: changes so we can always detect (subreg (mem ...)).
1612:
1613: Tue Dec 11 10:56:53 1990 Craig Burley (burley at pogo.ai.mit.edu)
1614:
1615: * stmt.c (expand_start_loop{,_continue_elsewhere}): Return pointer
1616: to nesting structure (new type stmt_nesting).
1617: (expand_exit_loop{,_if_false},expand_continue_loop): Accept pointer
1618: to nesting structure, substitute loop_stack if 0 (same behavior as
1619: before when there was no argument), so F90 CYCLE and EXIT statements
1620: (like C's continue and break stmts) can refer to other than the
1621: innermost loop.
1622: (expand_start_cond): Uses new names for if-related labels that
1623: reflect addition of "elseif" call, and sets endif_label to whatever
1624: exit_label gets set to (so we don't generate two identical labels
1625: for languages from which if is exitable via expand_exit_something).
1626: (expand_start_elseif): New function, used by Fortran.
1627: (expand_start_else): Moved above _end_cond so these four functions
1628: appear in the order they get called; uses new names, and fills in
1629: only endif_label if needed, not exit_label.
1630: (expand_end_cond): Handles end of any if, not just if-without-else.
1631: Generates both labels for next else/elseif pending (there was none)
1632: and the endif itself, if they exist (and there will always be at least
1633: one).
1634: (expand_end_else): Gone, call expand_end_cond instead.
1635: * c-parse.y, cplus-parse.y, objc-parse.y: Pass new 0 argument to
1636: expand_..._loop_... to indicate the innermost loop; call
1637: expand_end_cond instead of expand_end_else.
1638: * tree.h: Typedef for stmt_nesting returned by expand_start_loop...
1639: and change their return types accordingly.
1640:
1641: Mon Dec 10 06:59:14 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1642:
1643: * combine.c (check_asm_operands): Delete from here.
1644: * recog.c (check_asm_operands): Move to here; no longer static.
1645: (validate_change): Don't assume change is valid is asm_noperands >= 0.
1646: If recog_memoized returns < 0, accept change if asm_noperands >= 0
1647: and check_asm_operands returns non-zero.
1648: (apply_change_group): Likewise.
1649: (validate_replace_rtx_1): Swap operands on commutative operation
1650: if first is constant.
1651: Use plus_constant to simplify a PLUS with CONST_INT as second operand.
1652:
1653: * reload.c (find_equiv_reg): We must have a stable SP if GOAL is
1654: a MEM that uses SP.
1655:
1656: * combine.c (try_combine): Don't do anything if I2 or I1
1657: has an ASM_OPERANDS and CLOBBERS; we'll need those clobbers
1658: and it is too messy to try to get things set up correctly.
1659:
1660: Sun Dec 9 22:07:41 1990 Richard Stallman (rms at mole.ai.mit.edu)
1661:
1662: * cccp.c (collect_expansion): Don't check for /* */ concat here.
1663: (macroexpand): Always use raw arg if traditional.
1664:
1665: * c-parse.y (unary): Mark address of label as constant.
1666:
1667: Sun Dec 9 14:45:34 1990 Michael Tiemann (tiemann at cygnus.com)
1668:
1669: * cplus-class.c (propagate_basetype_offsets): Take effect on ASSOC
1670: before recursive calling.
1671: (finish_struct): Call `layout_decl' with zero for KNOWN_ALIGN
1672: when laying out TYPE_DECL.
1673: * cplus-tree.c (assoc_value): Change recursion condition to compare
1674: ASSOC_VALUE (assoc) against TYPE_MAIN_VARIANT (type) instead of just
1675: against type.
1676:
1677: Sat Dec 8 10:40:00 1990 Tom Wood (wood at dg-rtp.dg.com)
1678:
1679: * m88k.md (attributes): Reorganize and include a block diagram.
1680: Make better use of defaults.
1681: * m88k.md (peephole), out-m88k.c, tm-m88k.h (short_branch): Add
1682: the sparc peepholes for changing bsr/br into bsr.n/addu or
1683: bsr.n/subu. Install the length attribute for this. Requires the
1684: use of `def' to accomodate broken assemblers in the bsr.n/addu
1685: case.
1686:
1687: Fri Dec 7 06:12:43 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1688:
1689: * reorg.c (find_end_label): Increment usage count of label we return
1690: so we know it won't go away.
1691: (dbr_schedule): Decrement count of end label and delete it if dead.
1692:
1693: Wed Dec 5 17:36:23 1990 Tom Wood (wood at dg-rtp.dg.com)
1694:
1695: * m88k.md: Add instruction attributes for scheduling and delay
1696: slot information.
1697: * m88k.md (addsi pattern): Adding large constants does arise.
1698: (udivsi pattern): Wrong predicate.
1699: * tm-m88k.h, out-m88k.c (NOTICE_UPDATE_CC): Do so using
1700: attributes.
1701:
1702: * make-m88k, make-m88kdgux: Say how to create m88k-trace.asm.
1703:
1704: Wed Dec 5 13:52:16 1990 Richard Stallman (rms at mole.ai.mit.edu)
1705:
1706: * optabs.c (expand_binop): Support insn_before == 0.
1707:
1708: * function.c (optimize_bit_field): Fix wrong arg to validate_change.
1709:
1710: * Makefile (includes): Export LIB.
1711:
1712: Wed Dec 5 13:31:57 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1713:
1714: * combine.c (try_combine): Don't discard CLOBBERs from an insn
1715: with ASM_OPERANDS.
1716:
1717: Tue Dec 4 16:12:21 1990 Tom Wood (wood at dg-rtp.dg.com)
1718:
1719: * tm-m88k.h, out-m88k.c, m88k.md: More cleanups: introduce
1720: POWER_OF_2 for tests (x && (x & (x-1) == 0); rename predicate
1721: functions *_p instead of *_operand; cleanup addsi3 insns; simplify
1722: udivsi3 insns; simplify memory shift insns; make LOW_SUM and HIGH
1723: SImode instead of VOIDmode; add a predicate to the increment and
1724: test peephole insn; deal with setting SFmode to zero; delete bogus
1725: pattern for divide-by-power-of-2.
1726: * make-m88k, make-m88kdgux: dg88k-trace.asm is now m88k-trace.asm.
1727: Move movstr-m88k.sh to config/m88k-movstr.sh.
1728:
1729: Mon Dec 3 19:08:03 1990 Richard Stallman (rms at mole.ai.mit.edu)
1730:
1731: * Makefile.in (gnulib2.ready): New target.
1732: (stamp-gnulib2): Depend on that.
1733: Avoids recompiling gnulib2 each time cc1 changes.
1734:
1735: Mon Dec 3 16:17:56 1990 Tom Wood (wood at dg-rtp.dg.com)
1736:
1737: * tm-m88kdgux.h, xm-m88kdgux.h (SEPARATE_AUX_OUTPUT): Should be in
1738: xm-m88kdgux.h.
1739: * tm-m88k.h, out-m88k.c, m88k.md: Eliminated the fixed literal
1740: synthesis register. Reworked the addressing method to be like the
1741: sparc (uses HIGH and LO_SUM). Numerous cleanups. These changes
1742: are based on work done by Steve Chamberlain (steve@cygnus).
1743: * tm-m88k.h, out-m88k.c (BLOCK_PROFILER, FUNCTION_BLOCK_PROFILER):
1744: Implemented.
1745:
1746: Mon Dec 3 15:19:04 1990 Richard Stallman (rms at mole.ai.mit.edu)
1747:
1748: * cccp.c (special_symbol): Use time_t as type of t.
1749:
1750: * m88k-movstr.sh, m88k-trace.asm, va-m88k.h: New files.
1751:
1752: * gcc.c: Don't define R_OK, etc. if already defined.
1753:
1754: * out-sparc.c (finalize_pic, emit_move_sequence, output_arc_profiler):
1755: Finish change to emit HIGH and LO_SUM as Pmode instead of VOIDmode.
1756:
1757: Sun Dec 2 22:13:53 1990 Richard Stallman (rms at mole.ai.mit.edu)
1758:
1759: * config.gcc (tower): New alternative.
1760: (mips-news): Adapt for version 2.
1761:
1762: * tm-tower.h, tm-tower-as.h, xm-tower.h: New files.
1763:
1764: Sun Dec 2 17:47:28 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1765:
1766: * reload1.c (eliminate_regs, case ASM_OPERANDS): Fix typo in testing
1767: for changed vector.
1768:
1769: * out-rs6000.c (output_epilogue): Fix typo restoring general registers.
1770: (print_operand): Add new option %H.
1771: * rs6000.md: Add (clobber (reg:SI 64)) to many patterns even though
1772: they don't clobber MQ to allow combining to work well. This will be
1773: removed once combine knows how to add clobbers when required.
1774: Change patterns to reflect new canonicalization rules.
1775: Where we have (and (xshift)), add patterns for (zero_extend (xshift)).
1776: (andsi3, xorsi3): Fix bug in case where two insns are needed.
1777: (moveti): Don't call change_address when in reload.
1778: (sign_extend): Add patterns for sign extend preceeded or followed by
1779: one of the shifts it will do. Use %H to output the merged shift.
1780:
1781: * out-romp.c (print_operand): Allow exact_log2 result to be zero.
1782: * romp.md: Likewise.
1783: * tm-romp.h (CONST_OK_FOR_LETTER): Likewise.
1784:
1785: * a29k.md (type attribute): Add types for floating-point insns.
1786: (in_delay_slot attribute): Update to allow for new types.
1787: (function_unit definitions): Add definitions for floating-point units.
1788: (andcb*3): Delete obsolete names.
1789: (convert insn): Use register_operand instead of gen_reg_operand for
1790: floating-point operand.
1791: (cpeq, feq, deq, etc): New patterns.
1792: (floating-point arithmetic): Add support for 29050 insns and
1793: accumulators; indicate function unit usage.
1794: (ior/and patterns): Put NOT as second operand.
1795: (orn insn): New, for 29050.
1796: (load patterns): If using match_operator, make it the highest operand
1797: number.
1798: (loadm insns): Add workaround for rev A1 bug on 29050.
1799: (negsf2, negdf2): Don't use XOR to negate on 29050.
1800: (movsf, movdf): Add support for accumulators on 29050.
1801: (movsi, movhi, movqi): No need to support special->special copies.
1802: Support consthz insn on 29050.
1803: (compare, scc, and branch insns): Rework to not use cc0. Use a pseudo
1804: register instead. Compare doesn't generate any code, but merely
1805: saves the operands. scc and branch then emit the appropriate compare
1806: and jump (if branch) insns.
1807: (tstsi): Delete pattern; not used when no cc0.
1808: (peepholes): Remove peepholes to convert jumps to scc insns; now
1809: done in jump.c.
1810: * out-a29k.c (a29k_compare_*): New variables.
1811: (long_const_operand): Anything with low-order 16 bits zero is not a
1812: long constant on the 29050.
1813: (accum_reg_operand): New function.
1814: (gen_reg_operand): Returns false for accumulator registers.
1815: (output_operand): Allow accumulators.
1816: (ne_comparison_p, fp_comparison_p, return_peep_operand): Deleted.
1817: (fp_comparison_operator, branch_operator): New functions.
1818: (output_compare): Deleted.
1819: (print_operand): Change meaning of %b and %B.
1820: Add new code %J.
1821: * tm-a29k.h (TARGET_VERSION): Say if compiling for 29050.
1822: (TARGET_FLAGS): Add -29000 to turn off support for 29050; this is
1823: still the default.
1824: (various register macros): Add support for the floating-point
1825: accumulators on the 29050.
1826: (CONST_OK_FOR_LETTER): Use 'O' for a constant that can be set using
1827: conthz on the 29050; keep old definition for 29000.
1828: (STORE_FLAG_VALUE): Now 0x80000000.
1829: (ASM_FILE_START): Write ".cputype 29050" when compiling for 29050.
1830:
1831: * combine.c (subst): Put NOT, NEG, MULT, PLUS, and MINUS as the
1832: first operand of commutative operations. Note that NOT used to be
1833: put as the second operand but it has always been assumed that
1834: MULT would be the first operand in address expressions, so we have
1835: to change the previous canonicalization. This is possible now that we
1836: have eliminated the andcbm3 operations.
1837: * i860.md (andnot): Remove obsolete andcbsi3 name and place NOT
1838: as first operand.
1839: * m68k.md (fpm*): Delete patterns with MULT as second operand and
1840: use "@" construct when possible.
1841: * m88k.md (and.c, ior.c): Remove obsolete andcbsi3 and iorcbsi3 names.
1842: Delete patterns with NOT as second operand.
1843: (xor.c): Rewrite in new canonical form.
1844: * mips.md (nor): Rewrite in new canonical form.
1845: * pyr.md (bicw): Remove pattern with NOT as first operand, removing
1846: obsolete name andcbsi3 in the process.
1847: * sparc.md: Remove patterns with NOT as first operand.
1848: Remove obsolete names andcbsi3, iorcb3, and xorcbsi3.
1849: Rewrite xnor into new canonicalized form.
1850: Add mode to HIGH and LO_SUM operations.
1851: * vax.md (bic*): Remove obsolete andcbm3 names.
1852: Put NOT as first operand when both generating and recognizing RTL.
1853: (jlbc): Rewrite with NOT as first operand.
1854:
1855: Sun Dec 2 17:08:16 1990 Richard Stallman (rms at mole.ai.mit.edu)
1856:
1857: * m68k.md (recognizer for casesi_2): Handle ASM_RETURN_CASE_JUMP.
1858:
1859: * stddef.h (ptrdiff_t): Prevent definition, as with size_t.
1860:
1861: Sat Dec 1 16:31:30 1990 Ron Guilmette (rfg at ncd.com)
1862:
1863: * dwarfout.c (lookup_filename, dwarfout_finalize): changed from
1864: maintaining a linked list of filename entries to maintaining an
1865: (expandable) array of filename entries instead. Also, changed
1866: code so that *all* filename strings are output (to the .files
1867: section of the asm file) in one swell foop just as the asm file is
1868: being finalized rather than writing out new filenames one-by-one
1869: as they arise (as previously). This circumvents a problem caused
1870: by rfg's naive assumption that assemblers kept a stack of prior
1871: section names (of depth > 1) which could be successively popped
1872: via multiple `previous' directives. For some assemblers, the
1873: depth of the stack is only 1 and they can get confused if you do
1874: two (or more) `previous' directives in a row. Anyway, it is no
1875: longer either necessary or useful to do that, so who cares.
1876:
1877: * dwarfout.c: added code to output newlines to the asm file just
1878: prior to each and every change of section (for better readability
1879: of the asm files).
1880:
1881: * dwarfout.c: changed code so that if DWARF_DESCRIBE_USED_EXTERNS
1882: is defined, it forces DWARF_LOCATION_ATTRIBUTES to also be defined.
1883:
1884: * dwarfout.c: changed code so that if DWARF_LOCATION_ATTRIBUTES
1885: is defined, it forces DWARF_DESCRIBE_FILES to be defined (to `1').
1886:
1887: * dwarfout.c: changed code so that if DWARF_DESCRIBE_FILES is not
1888: already defined (in the user's tm.h file) it will automatically be
1889: defined (by default) to `1'. Also changed all instances of
1890: `#ifdef DWARF_DESCRIBE_FILES' to `#if DWARF_DESCRIBE_FILES'.
1891: The user must now intentionally *disable* this feature (by
1892: defining DWARF_DESCRIBE_FILES to `0' in his tm.h file) if he
1893: wishes to have the additional information about files suppressed.
1894:
1895: * dwarfout.c: changed comments relating to optional defines for
1896: extended GNU DWARF features to include more information and to
1897: add some additional clarity.
1898:
1899: Sat Dec 1 16:00:34 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1900:
1901: * combine.c (subst): Call reverse_condition instead of
1902: reverse_comparison.
1903: We are allowed to reverse floating-point EQ and NE comparisons.
1904:
1905: * combine.c (subst): Call simplify_and_const_int for all AND
1906: and ZERO_EXTEND cases and all cases where we make one of them.
1907: Remove all other code in AND and ZERO_EXTEND cases.
1908: (simplify_and_const_int): Rewritten to follow a consistent model
1909: of tracking what AND's need to be done and which bits are not
1910: significant. Consistently try a ZERO_EXTEND for all cases where
1911: the result is an AND with a mode-wide mask. Move all remaining
1912: cases from AND any ZERO_EXTEND cases from subst.
1913:
1914: Sat Dec 1 09:13:17 1990 Michael Tiemann (tiemann at cygnus.com)
1915:
1916: * cplus-tree.h (lang_type): Remove any_assigns_this,
1917: none_assigns_this from type_flags.
1918: * cplus-decl2.c (get_temp_name): If the initializer is a
1919: pointer to zero, cache it in EMPTY_TABLE.
1920: (finish_builtin_type): New function, to factor common code
1921: arising from building internal structures.
1922: * cplus-decl.c (init_decl_processing): Call it.
1923:
1924: Fri Nov 30 10:39:04 1990 Michael Tiemann (tiemann at cygnus.com)
1925:
1926: * cplus-decl.c (finish_function): Use CLASSTYPE_ASM_WRITTEN instead
1927: of TREE_USED to indicate that we need debugging info for
1928: TTYPE.
1929: Note that nobody ever sets EXTENDED_DBX_DEBUG. For now,
1930: change to test DBX_DEBUG. For later, change everything to
1931: key off of EXTENDED_DBX_DEBUG.
1932: Also, set `warn_return_type' to one always, since this warning
1933: is too valuable to lose.
1934: * cplus-tree.c (lang_output_debug_info): Don't test TREE_USED. That
1935: field is already used by other routines, and we have all we need now
1936: in CLASSTYPE_ASM_WRITTEN.
1937: * cplus-dbxout.c (dbxout_type_method_1): Handle const,
1938: volatile, and const/volatile member functions.
1939:
1940: Fri Nov 30 04:51:46 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
1941:
1942: * combine.c (reg_last_set_value): New variable.
1943: (combine_instructions): Allocate and initialize it.
1944: (record_dead_and_set_regs): Set reg_last_value to source
1945: of assignment; clear it for a CLOBBER or partial assignment.
1946: (subst): Use reg_last_set_value instead of interpreting the
1947: insn in reg_last_set as if it was a single SET.
1948:
1949: * combine.c (gen_lowpart_for_combine): Call gen_lowpart for CONST_INT.
1950: When making a new MEM, copy MEM_VOLATILE_P and MEM_IN_STRUCT_P.
1951: If cannot recognize the argument, just form a SUBREG; usually,
1952: it won't be recognized, but sometimes will allow further
1953: simplifications.
1954:
1955: * regclass.c (reg_scan): Save size of uid map; reallocate if
1956: we have more registers than we allocated.
1957: Leave some extra room in map.
1958:
1959: * stmt.c (emit_case_nodes): Supply missing argument to emit_cmp_insn.
1960:
1961: * fold-const.c (decode_field_reference): Add missing arg declaration.
1962:
1963: * expmed.c (store_bit_field): Add missing last argument to
1964: recursive call.
1965:
1966: * cse.c (cse_insn): Remove extra arg passed to rtx_equal_p.
1967:
1968: * Makefile.in (proto): Make protoize.1 and unprotoize.1.
1969: (protoize.1, unprotoize.1): New targets.
1970: (install_man): Install protoize.1 and unprotoize.1./
1971: * proto-unproto.1: New file.
1972:
1973: * loop.c (scan_loop): Properly set SET_SRC in movables entry for
1974: MOVE_INSN == 1 and CONSEC > 0 case.
1975: (force_movables): Don't look at SET_SRC when CONSEC > 0.
1976:
1977: * expr.c (expand_expr, case ARRAY_REF): Ensure TYPE_POINTER_TO
1978: gets initialized after we build a variant type.
1979:
1980: Fri Nov 30 00:35:06 1990 Richard Stallman (rms at mole.ai.mit.edu)
1981:
1982: * m68k.md (ashr of 16 to 24 bits): Use extl, not extw.
1983:
1984: Thu Nov 29 21:41:03 1990 Richard Stallman (rms at mole.ai.mit.edu)
1985:
1986: * tm-vax.h (BLOCK_PROFILER, FUNCTION_BLOCK_PROFILER): New macros.
1987:
1988: * gcc.c (add_prefix): Add new element, don't replace old first elt.
1989:
1990: * dwarfout.c (dwarfout_finalize): Go to DEBUG_SECTION first thing.
1991:
1992: Thu Nov 29 17:50:43 1990 Richard Kenner (kenner at vlsi1.ultra.nyu)
1993:
1994: * stmt.c (expand_end_loop): Stop looking for branch to the loop
1995: exit when we hit a NOTE_INSN_BLOCK_{BEG,END}.
1996: * jump.c (duplicate_loop_exit_test): Likewise.
1997: Also, only copy line-number notes.
1998:
1999: * integrate.c (expand_inline_function): Call expand_expr for the
2000: arguments before allocating maps that are based on register numbers.
2001:
2002: * loop.c (loop_reg_used_before_p): Accept new argument, SET, to
2003: indicate which part of INSN is setting the relevant register.
2004: (scan_loop): Pass new arg to loop_reg_used_before_p.
2005:
2006: * function.c (optimize_bit_field): Don't assume ZERO_EXTRACT can
2007: be replaced by MEM; use validate_change to check.
2008:
2009: * reload.c (find_reloads_toplev): Add missing arg to recursive call.
2010:
2011: * calls.c (expand_call): Correct two cases of missing mode to gen_rtx.
2012:
2013: Thu Nov 29 02:42:35 1990 Michael Tiemann (tiemann at cygnus.com)
2014:
2015: * version.c: Bump version number to 1.90.04.
2016:
2017: * toplev.c (rest_of_compilation): If FLAG_PIC is nonzero, emit any
2018: special PIC code once we start really compiling a function (i.e., we
2019: are not in an inline function). Inline functions cannot
2020: meaningfully hold PIC code because there is no notion of position
2021: independence in code that isn't really being written down.
2022:
2023: * Makefile.in: Don't build cplus-cadillac.o by default. Build
2024: cplus-edsel.o instead. Until Lucid frees their programming
2025: environment, their Cadillac will always be an Edsel to GNUsers.
2026:
2027: * stmt.c (fixup_gotos): Change loop to run in two passes so that
2028: cleanups don't experience a race condition.
2029: (expand_cleanups): Replace Nov 5 word-around with consistency check.
2030: The same cleanups should never be run twice.
2031:
2032: * cplus-decl.c (lang_{init,finish}): Move these functions...
2033: cplus-lex.c: ...to here. Also, make change to lang_init analogous
2034: to Nov 27 change for C compiler.
2035:
2036: * cplus-decl.c (pushdecl): Don't warn about static/extern conflicts
2037: if X is a TYPE_DECL.
2038: (build_enumerator): Certain CONST_INT nodes cannot be coopted to be
2039: the constant for enumerator. Mark them as non-shareable and don't
2040: coopt them.
2041:
2042: * cplus-decl.c (lang_{init,finish}): Declare these to be void
2043: functions to match new tree.h.
2044:
2045: Wed Nov 28 18:48:33 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2046:
2047: * reload1.c (eliminate_regs): Convert (subreg (mem)) to (mem) when
2048: not a paradoxical SUBREG.
2049:
2050: Wed Nov 28 17:15:43 1990 Richard Stallman (rms at mole.ai.mit.edu)
2051:
2052: * emit-rtl.c (gen_label_rtx): Clear LABEL_NAME via gen_rtx.
2053:
2054: Tue Nov 27 21:54:15 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2055:
2056: * varasm.c (assemble_external): Never write a .extern for a static
2057: name.
2058:
2059: * recog.c (validate_replace_rtx_1): Handle making a SUBREG of a MEM
2060: by trying a new MEM.
2061:
2062: Tue Nov 27 11:54:28 1990 Richard Stallman (rms at mole.ai.mit.edu)
2063:
2064: * c-lang.c, objc-action.c: Include input.h.
2065: (lang_init): Call check_newline here.
2066: * toplev.c (compile_file): Not here.
2067: Call lang_init after setting input_filename.
2068:
2069: * tree.h: Declare numerous functions that the front end must provide.
2070:
2071: * rtl.h (LABEL_REFS): Use operand 5, same as LABEL_NUSES.
2072:
2073: * toplev.c (warn_return_type, W_options): Handle -Wreturn-type here.
2074: * c-decl.c: Not here.
2075: * flags.h: Declare it here, not in c-tree.h.
2076:
2077: * gcc.c (pexecute): Wait and retry if fork fails.
2078:
2079: * expr.c (do_jump): Pass all args to get_inner_reference.
2080: (expand_assignment): Fix typo in arg to get_inner_reference.
2081:
2082: * tm-hp9k320.h (STANDARD_STARTFILE_PREFIX): Don't alter if already set.
2083:
2084: Mon Nov 26 18:28:51 1990 Michael I Bushnell (mib at churchy.ai.mit.edu)
2085:
2086: * cccp.c (handle_directive): Do backslash-newlines inside of
2087: strings.
2088:
2089: Mon Nov 26 15:39:29 1990 Richard Stallman (rms at mole.ai.mit.edu)
2090:
2091: * cccp.c (main): Handle -w.
2092: (warning): Do nothing if -w.
2093: * gcc.c (compilers): Pass -w to cpp.
2094:
2095: * c-decl.c (grokdeclarator): Don't discard arg types
2096: for prototype even if traditional.
2097:
2098: Sun Nov 25 20:52:31 1990 Richard Stallman (rms at mole.ai.mit.edu)
2099:
2100: * protoize.c: Undef CHAR_BIT, etc, before including limits.h.
2101:
2102: * reload1.c (old_asm_operands_vec, new_asm_operands_vec):
2103: Type should point to a vector.
2104: (Eliminate_regs): For asm_operands, copy the vector properly.
2105:
2106: Sun Nov 25 20:35:12 1990 Richard Kenner (kenner at vlsi1.ultra.nyu)
2107:
2108: * jump.c (jump_optimize): Fix typo in stack push combining code.
2109:
2110: * reload1.c (eliminate_regs): Ensure we share operands 3 and 4
2111: of ASM_OPERANDS operations if they were originally shared.
2112: Copy all rtx flags when making a new MEM.
2113: (eliminate_regs_in_insn): Initialize for ASM_OPERANDS sharing check.
2114:
2115: Sun Nov 25 16:37:10 1990 Richard Stallman (rms at mole.ai.mit.edu)
2116:
2117: * Makefile.in (stamp-gnulib2): Don't depend on gnulib2-indirect.
2118:
2119: * gcc.c (do_spec_1): Handle %W{...}.
2120: (default_compilers): Use %W{...} when passing -o option.
2121:
2122: Sat Nov 24 16:39:56 1990 Richard Stallman (rms at mole.ai.mit.edu)
2123:
2124: * cplus-lex.c (init_lex, do_pending_inlines, reinit_lang_specific):
2125: Add conditionals for __GNU_LIBRARY__.
2126:
2127: Thu Nov 22 13:48:06 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2128:
2129: * fold-const.c (optimize_bit_field_compare): Pass additional
2130: arg to get_inner_reference; it gets set if something was volatile.
2131: (decode_field_reference): New arg PVOLATILEP; passed to
2132: get_inner_reference.
2133: (merge_component_references): Add pointer to place to store if
2134: something is volatile to calls to decode_field_reference; don't
2135: do anything if it gets set (this may be very conservative).
2136:
2137: * stmt.c (expand_end_loop): Skip initial CODE_LABEL at start of
2138: loop when looking for qualified conditional exit.
2139:
2140: * reload.c (push_reload): If (subreg:M1 (reg:M2 ....)) and we
2141: have trouble access the register in M1, reload the reg, not subreg.
2142: Fix typo in testing for memory.
2143: (reload): Force reload of the operand in the above cases.
2144:
2145: Wed Nov 21 17:39:42 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2146:
2147: * loop.c (strength_reduce, combine_givs): Don't penalize
2148: non-replaceable givs unless they are user variables; temporaries
2149: are probably dead even though we can't prove it.
2150:
2151: * integrate.c (save_constants): Don't get confused by looking
2152: inside CONST_DOUBLE_MEM.
2153: Call recursively on what get_pool_constant returned, in case it
2154: was itself the address of a pool constant.
2155: (copy_for_inline, copy_rtx_and_substitute, restore_constants):
2156: Remake CONST_DOUBLE so it gets chained in correctly and we don't use
2157: obsolete CONST_DOUBLE_MEM values. Call recusively on operand we are
2158: about to pass to force_const_mem; it might have been a case of a
2159: constant value being an address of another constant.
2160:
2161: * loop.c (find_mem_givs): Don't make a DEST_ADDR giv with mult_val == 1
2162: and add_val == 0.
2163: (maybe_eliminate_biv_1): Turn off elimination in (compare biv1 biv2)
2164: cases; they have problems.
2165:
2166: Wed Nov 21 16:06:14 1990 Richard Stallman (rms at mole.ai.mit.edu)
2167:
2168: * dwarfout.c (location_attribute): Offset for bitfields is special.
2169:
2170: * expr.c (get_inner_reference): New arg pvolatilep.
2171: (expand_expr, expand_assignment): Use to set MEM_VOLATILE_P.
2172:
2173: Wed Nov 21 10:34:25 1990 Tom Wood (wood at dg-rtp.dg.com)
2174:
2175: * stor-layout.c (layout_decl): Record whether a FIELD_DECL is a
2176: bit-field and if so its original type.
2177: * tree.h (DECL_BIT_FIELD_TYPE): New.
2178: * dbxout.c (dbxout_type): Use DECL_BIT_FIELD_TYPE.
2179: * dwarfout.c (output_member_die, bit_offset_attribute,
2180: bit_size_attribute, member_declared_type): Use DECL_BIT_FIELD_TYPE.
2181: * sdbout.c (sdbout_one_type): Use DECL_BIT_FIELD_TYPE.
2182:
2183: * sdbout.c (DEBUGGER_ARG_OFFSET, DEBUGGER_AUTO_OFFSET): New
2184: interfaces to compute the location of arguments and automatic
2185: variables.
2186: * dbxout.c (DEBUGGER_ARG_OFFSET, DEBUGGER_AUTO_OFFSET): Likewise.
2187:
2188: * dbxout.c (dbxout_parms): Describe a parameter passed in
2189: registers but living on the stack as N_PSYM rather than N_LSYM.
2190: These are typically arg_pointer based locations.
2191:
2192: * out-m88k.c (m88k_debugger_offset): New function.
2193: * tm-m88k.h (DEBUGGER_ARG_OFFSET, DEBUGGER_AUTO_OFFSET): Replaces
2194: SDB_AUTO_NORMALIZE_OFFSET.
2195: * tm-m88k.h (STACK_BOUNDARY): Update to 16 byte aligned stacks.
2196:
2197: Tue Nov 20 23:48:57 1990 Richard Stallman (rms at mole.ai.mit.edu)
2198:
2199: * dwarfout.c (dwarfout_init): Set stack depth to 1 at start.
2200: (output_padded_null_die): New function.
2201: (dwarfout_finalize): Use that to ensure length divisible by 4.
2202:
2203: * ns32k.md (addsi3): Don't use `addr' for very large displacements.
2204:
2205: Tue Nov 20 05:48:42 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2206:
2207: * jump.c (can_reverse_comparison_p): It is safe to reverse an EQ
2208: or NE comparison, even if IEEE floating-point.
2209:
2210: * integrate.h (struct inline_remap): const_*_map now maps registers
2211: in calling function, not called function.
2212: Add fields to save values recorded from SETs.
2213: * integrate.c: Now includes insn-config.h and real.h.
2214: (expand_inline_function): New meaning for const_*_map.
2215: Don't fill in constant equivalences here; now done in try_constants.
2216: Show CALL_INSNs potentialy clobber all hard registers since we
2217: now record equivalences for hard registers.
2218: (try_constants): No longer need original RTL; all callers changed.
2219: Call note_stores to kill any known equivalences for registers changed.
2220: Record equivalences for PC, CC0, and registers set by this insn.
2221: (subst_constants): No longer need original RTL; all callers changed.
2222: Reflect new meaning of const_*_map.
2223: Perform more extensive constant folding, basically a subset of
2224: fold_rtx in cse.c; specifically, fold the result of comparison
2225: operations and IF_THEN_ELSE operations.
2226: Record the constant equivalences of SETs, if any.
2227: (try_fold_condition, const_equiv, fold_out_const_cc0): Deleted.
2228: * Makefile.in (integrate.o): Now includes insn-config.h and real.h.
2229:
2230: Sat Nov 17 07:48:45 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2231:
2232: * local-alloc.c (local_alloc): Don't allocate a reg that wants a
2233: class that has only one register; let global-alloc do it so that it
2234: can be given a GENERAL_REG if reload needs a spill reg of that class.
2235:
2236: * regclass.c (regclass, reg_class_record): Count savings in loops as
2237: being greater the same way we adjust reg_n_refs for loops in flow.c.
2238:
2239: * expmed.c (store_bit_field, extract_bit_field): Remove change of
2240: Oct 16; it causes problems with long long bit fields.
2241:
2242: * rtlanal.c (reg_overlap_mentioned_p): If called with a constant,
2243: return zero. If called with a MEM, return 1 iff the second arg
2244: contains a MEM.
2245: * reload.c (push_reload): Call reg_overlap_mentioned_p only if OUT
2246: is a MEM and then pass it the address of OUT.
2247:
2248: * cse.c (cse_insn): Refine when SRC_EQV, SRC, and DEST are added
2249: to the hash table. SRC_EQV is not added to the hash table if it
2250: is volatile or equal to DEST and similarly for SRC. DEST is not
2251: added to the hash table unless either SRC_EQV or SRC is.
2252:
2253: Thu Nov 15 23:43:20 1990 Richard Stallman (rms at mole.ai.mit.edu)
2254:
2255: * c-typeck.c (convert_for_assignment): Change warning message.
2256:
2257: Thu Nov 15 18:44:49 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2258:
2259: * stmt.c (expand_end_loop): Generalize code to look for more
2260: than one branch to the exit and include unconditional branches
2261: to the exit; move the whole range to the end of the loop.
2262: * jump.c (duplicate_loop_exit_test): New function.
2263: (jump_optimize): Call it.
2264: Don't allocate jump_chain until we have finished deleting dead code.
2265: Leave some more room in jump_chain.
2266: (simplejump_p): Reject if not JUMP_INSN.
2267: (delete_insn): If simplejump_p, remove from jump chain.
2268: * loop.c (loop_skip_over): Deleted.
2269: (scan_loop): No longer call it.
2270: * cse.c (predecide_loop_entry): Deleted.
2271: (cse_basic_block): No longer call it.
2272:
2273: Thu Nov 15 18:00:20 1990 Richard Stallman (rms at mole.ai.mit.edu)
2274:
2275: * math-68881.h (HUGE_VAL): Add extra braces for Sun.
2276:
2277: * stor-layout.c (layout_type): Don't let array have less
2278: alignment than its mode calls for.
2279:
2280: Thu Nov 15 13:05:30 1990 Tom Wood (wood at dg-rtp.dg.com)
2281:
2282: * sdbout.c (sdbout_parms, sdbout_reg_parms): Reimplemented based
2283: on dbxout_parms and dbxout_reg_parms.
2284:
2285: Wed Nov 14 08:48:43 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2286:
2287: * emit-rtl.c (emit_...): All of these now return the last insn
2288: emitted; previously some of them returned void.
2289: (emit_barrier_before): New function, similar to others.
2290: * rtl.h: All emit_... functions now return an rtx; reorder so
2291: declarations are in the same order as definitions in emit-rtl.c.
2292:
2293: * reorg.c (steal_delay_list_from_{target,fallthrough}): Add missing
2294: test when checking candidate insn for resource conflicts.
2295:
2296: Wed Nov 14 07:08:19 1990 Tom Wood (wood at dg-rtp.dg.com)
2297:
2298: * c-parse.y (pushlevel, compstmt): Place a line note at the first
2299: token beginning a block and at the close brace ending a block.
2300: These are the conventional locations for SDB and DWARF debugging
2301: information.
2302:
2303: Tue Nov 13 18:16:47 1990 Richard Stallman (rms at mole.ai.mit.edu)
2304:
2305: * function.c (assign_stack_local): If alignment not specified
2306: and not BLKmode, use at least word alignment.
2307: (assign_outer_stack_local): Likewise.
2308:
2309: * sparc.md: Turn off patterns that specify no_ov or CC_NO_OVERFLOW.
2310:
2311: * dwarfout.c (file_attribute): Fix arg to ASM_OUTPUT_DWARF_ATTRIBUTE.
2312: (AT_line, AT_file): New definitions.
2313:
2314: * out-i860.c (output_block_move): Move .Lm%3 down one insn.
2315:
2316: * c-decl.c (grokdeclarator): -funsigned-bit-field doesn't affect enums.
2317:
2318: Tue Nov 13 09:28:27 1990 Tom Wood (wood at dg-rtp.dg.com)
2319:
2320: * gcc.c (default_compilers): Report an error if -C is used without
2321: -E. Pass -H to cpp.
2322:
2323: * sdbout.c (plain_type, plain_type1): save and output the
2324: rightmost array dimensions.
2325:
2326: * syms.h (enum sdb_type): Add T_VOID, equal in value to T_ARG.
2327: * sdbout.c (plain_type_1): Use T_VOID for VOID_TYPE and define it
2328: to be T_INT if not present in <syms.h>.
2329:
2330: * sdbout.c (sdbout_toplevel_data): Use abort rather than fatal.
2331:
2332: Mon Nov 12 08:49:33 1990 Michael Tiemann (tiemann at cygnus.com)
2333:
2334: * expr.c (compare): Fix use of GET_MODE_CLASS so we don't abort if
2335: MODE is VOIDmode.
2336: * optabs.c (init_optab): Call `xmalloc' instead of `malloc'.
2337:
2338: * out-sparc.c (hard_regno_mode_ok): Change initialization of array
2339: to match behavior of Nov 11 change for complex modes.
2340:
2341: * jump.c (delete_labelref_insn): Chase all LOG_LINKS of insn to try
2342: to delete references to LABEL. This is needed for machines like
2343: SPARC which use multiple insns to get the value of LABEL into a
2344: register.
2345:
2346: Mon Nov 12 16:07:27 1990 Richard Stallman (rms at mole.ai.mit.edu)
2347:
2348: * machmode.def (SCmode, ...): Class is MODE_COMPLEX_FLOAT.
2349:
2350: Sun Nov 11 00:27:34 1990 Richard Stallman (rms at mole.ai.mit.edu)
2351:
2352: * tm-i860.h (HARD_REGNO_MODE_OK): Handle values more than 2 regs long.
2353: * tm-m68k.h (HARD_REGNO_MODE_OK): Likewise, for d7/a0 boundary.
2354: * tm-spur.h (HARD_REGNO_MODE_OK): Likewise, for 31/32 boundary.
2355: * tm-*.h (HARD_REGNO_NREGS): Use GET_MODE_NUNITS to handle
2356: complex values in fp registers on machines where one reg holds a DF.
2357:
2358: * sdbout.c (sdbout_one_type): Do nothing for incomplete type.
2359:
2360: * c-decl.c (duplicate_decls): Warning only when redefining built-in fn.
2361:
2362: * c-decl.c (init_decl_processing): Use sizetype, not unsigned long,
2363: in prototypes for memcpy and memcmp.
2364:
2365: * c-parse.y (component_decl): Don't read the semicolon here.
2366:
2367: * toplev.c (compile_file): Reverse top-level decls before output.
2368:
2369: Sat Nov 10 22:27:47 1990 Richard Stallman (rms at mole.ai.mit.edu)
2370:
2371: * stor-layout.c (layout_type): Use MODE_COMPLEX_{INT,FLOAT}.
2372:
2373: Sat Nov 10 20:34:55 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2374:
2375: * reload.c: Provide a default definition of REGISTER_MOVE_COST.
2376:
2377: Sat Nov 10 01:43:09 1990 Michael Tiemann (tiemann at cygnus.com)
2378:
2379: * cplus-init.c (emit_base_init): Don't use CLASSTYPE_ASSOC as a list
2380: of only immediate basetypes anymore. Use `get_base_distance' to
2381: check whether a type is an immediate basetype or not.
2382:
2383: * stmt.c (expand_return): Don't emit a USE if VAL is a
2384: pseudo-register.
2385:
2386: * integrate.c (function_cannot_inline_p): Call to strcmp for
2387: "__builtin_va_alist" must use IDENTIFIER_POINTER not
2388: DECL_NAME.
2389:
2390: * genattrtab.c (check_attr_test): Use XSTR macro instead of
2391: XEXP macro in places where strings are used.
2392:
2393: * tree.c (type_hash_lookup): Have to check TYPE_DOMAIN for non-zero
2394: before comparing the equality of the possible lists.
2395:
2396: * cplus-typeck.c (build_c_cast): Check TREE_TYPE before checking
2397: that the TREE_TYPE is an OFFSET_TYPE.
2398:
2399: * cplus-typeck.c (c_expand_return): Use DECL_RESULT of
2400: current_function_decl instead of `result' since `result' might be
2401: set to zero.
2402:
2403: * cplus-decl.c (xref_tag): Fixed typo in setting
2404: TYPE_USES_COMPLEX_INHERITANCE.
2405:
2406: * cplus-tree.c (assoc_value): Changed interface to take COPYING
2407: parameter.
2408: * cplus-{class,init,search,tree}.c All callers changed.
2409:
2410: * cplus-typeck.c (build_c_cast): Resolve OFFSET_REFs if the type we
2411: are converting to is not an OFFSET_TYPE.
2412:
2413: Thu Nov 8 15:26:27 1990 Craig Burley (burley at pogo.ai.mit.edu)
2414:
2415: * tm-*.h: Try to change HARD_REGNO_NREGS, HARD_REGNO_OK, and other
2416: macro defs to handle new complex type stuff. Mostly guesswork; needs
2417: checking by people who really know each machine.
2418: * machmode.def (SCmode, DCmode, XCmode, TCmode): New complex modes.
2419: * machmode.h (GET_MODE_ALIGNMENT): New macro from stor-layout.c.
2420: * tree.c (build_complex_type): New function.
2421: * stor-layout.c (layout_type): Handle COMPLEX_TYPE.
2422: * expr.c (compare1, compare, move_block_to_reg, emit_push_insn):
2423: Change uses of GET_MODE_CLASS.
2424: * optabs.c (expand_binop, expand_twoval_binop, expand_unop):
2425: (emit_cmp_insn): Likewise.
2426:
2427: Thu Nov 8 06:19:57 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2428:
2429: * local-alloc.c (no_conflict_p): Initialize *WHERE_DEAD; previously
2430: uninitialized.
2431:
2432: Thu Nov 8 01:08:45 1990 Richard Stallman (rms at mole.ai.mit.edu)
2433:
2434: * c-parse.y (yylex): Size of wide STRING_CST counted terminator wrong.
2435:
2436: Wed Nov 7 14:55:38 1990 Richard Stallman (rms at mole.ai.mit.edu)
2437:
2438: * gnulib2.c (L_trampoline): Put it inside a dummy function.
2439:
2440: * enquire.c: Renamed from hard-params.c; new vers from [email protected].
2441: Modified to undef CHAR_BIT, etc. if defined in stdio.h.
2442: * Makefile.in (enquire): Targets renamed.
2443: (enquire.o): Define NO_MEM.
2444:
2445: Wed Nov 7 14:18:34 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2446:
2447: * jump.c (invert_jump): If it is going to fail (i.e., redirect_jump
2448: fails), don't invert the jump.
2449:
2450: * expr.c (expand_expr, case COND_EXPR): Don't accept a hard register
2451: as a target if we are going to store into it before testing the
2452: condition because that evaluation may involve a subroutine call
2453: which might clobber it.
2454:
2455: * jump.c (delete_jump): reg_set_p should be called with PATTERN (insn).
2456: (thread_jumps): Add omitted last argument to rtx_equal_for_thread_p.
2457:
2458: * reload.c (find_reloads): Only skip insns which set one hard register
2459: to another if the cost of doing so is low; if not, there may not be
2460: a single insn to do the copy and we may need a reload register.
2461:
2462: Wed Nov 7 00:01:18 1990 Richard Stallman (rms at mole.ai.mit.edu)
2463:
2464: * c-parse.y (component_decl_list): Allow missing semi at end.
2465:
2466: * loop.c (move_movables): When moving and deleting library call,
2467: don't be confused if an insn is deleted.
2468:
2469: Tue Nov 6 20:49:57 1990 Richard Stallman (rms at mole.ai.mit.edu)
2470:
2471: * tm-m68k.h (TRANSFER_TO_TRAMPOLINE): Fix asm syntax.
2472:
2473: * xm-iris.h (alloca): Delete redundant definition.
2474: * tm-iris.h (CPP_SPEC): Define variant symbols starting with _.
2475: Define __EXTENSIONS__.
2476:
2477: * config.gcc (editing .gdbinit): Search current dir, not just srcdir.
2478:
2479: Tue Nov 6 22:24:09 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2480:
2481: * expr.c (expand_expr, case COND_EXPR): Generate efficient code for
2482: A ? A : FOO and similar.
2483:
2484: * combine.c (subst): If we have, e.g., (lt CONST FOO), convert it
2485: to (gt FOO CONST).
2486:
2487: * recog.c (comparison_operand): Use comparison_code_p.
2488:
2489: * genconfig.c (walk_insn_part): Add operand to indicate if PART is
2490: going to be used to recognize an insn (as opposed to emitting rtl).
2491: If not, ignore CC0.
2492: (gen_insn, gen_expand, gen_split, gen_peephole): Add new operand to
2493: walk_insn_part calls.
2494:
2495: * cse.c (find_comparison_args): Correctly compute rtx_code of
2496: comparison; if we find another comparison code inside, use it.
2497: * loop.c (get_condition): Likewise.
2498:
2499: * expr.c (expand_builtin): For ffs, don't pass VOIDmode to expand_unop.
2500:
2501: Mon Nov 5 12:55:00 1990 Richard Stallman (rms at mole.ai.mit.edu)
2502:
2503: * final.c (output_addr_const): Don't print parens for CONST.
2504:
2505: * reload1.c (choose_reload_regs): Handle case where find_equiv_reg
2506: returns a SUBREG. Also, use variable `regno' uniformly throughout
2507: code that finds equivalent register.
2508:
2509: * gnulib2.c (__floatdisf, __fixunssfsi): New functions.
2510: (__fixsfdi, __fixunssfdi): New functions.
2511: * gnulib.c (__floatsisf, __fixsfsi): New functions.
2512:
2513: Mon Nov 5 06:37:02 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2514:
2515: * fold-const.c (fold, case EQ_EXPR and NE_EXPR): Convert, e.g.,
2516: (A & 2) == 2 to (A & 2) != 0. This eliminates the need for these
2517: patterns in MD files.
2518: Detect more general cases of comparing something with itself.
2519:
2520: Mon Nov 5 00:09:55 1990 Richard Stallman (rms at mole.ai.mit.edu)
2521:
2522: * stmt.c (expand_cleanups): Don't run any cleanup twice.
2523:
2524: Sun Nov 4 23:49:22 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2525:
2526: * expr.c (convert_move): Use emit_no_conflict_block when converting
2527: SImode to DImode.
2528: If have slt insn, emit a compare insn; we must not have a use of
2529: cc0 without a set; normally, the compare will be deleted as
2530: redundant in final.c.
2531: Use shift rather than clear/test/negate for high-order word when
2532: doing sign extension.
2533:
2534: * optabs.c (emit_no_conflict_block): Don't put REG_NO_CONFLICT
2535: notes on the trailing copy insn; nobody looks there.
2536:
2537: * combine.c (try_combine): Don't combine a reg-reg copy if the
2538: destination is used in a REG_NO_CONFLICT note.
2539:
2540: * reload.c (find_equiv_reg): Use true_regnum to support SUBREGs
2541: as well as REGs.
2542:
2543: Sun Nov 4 12:55:03 1990 Richard Stallman (rms at mole.ai.mit.edu)
2544:
2545: * i386.md (extend*): Take out last change.
2546: Unix assembler rejects movsx...
2547:
2548: * expr.c (expand_expr): Special case for ignored volatile
2549: failed to return.
2550:
2551: Sat Nov 3 14:42:34 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2552:
2553: * expr.c (do_jump, case PLUS_EXPR): Turn off this case; it was a
2554: pessimization.
2555:
2556: Fri Nov 2 01:51:31 1990 Michael Tiemann (tiemann at cygnus.com)
2557:
2558: * stmt.c (expand_return): Don't emit a USE if VAL is a
2559: pseudo-register.
2560:
2561: Fri Nov 2 15:30:48 1990 Richard Stallman (rms at mole.ai.mit.edu)
2562:
2563: * gnulib2.c (__builtin_saveregs): Add version for i860.
2564:
2565: * out-i860.c (output_block_move): Rearrange the copy loop.
2566: Now uses two labels and a more complicated lead-in.
2567:
2568: Fri Nov 2 14:17:24 1990 Tom Wood (wood at dg-rtp.dg.com)
2569:
2570: * m88k.md (extendsidi2): New define_expand.
2571:
2572: * out-m88k.c: Converted various constructs to use conventinal
2573: formatting.
2574:
2575: * m88k.md (ext pattern): Must have parens.
2576: * m88k.md (mul/div patterns): Added better documentation. Removed
2577: unfounded restriction on immediate values.
2578: * m88k.md (increment and test peephole): Don't use %L.
2579:
2580: * out-m88k.c (m88k_layout_frame): Must allocate space for the
2581: addressing base register (-mpic).
2582: * out-m88k.c (output_tdesc): Use version 2 tdesc with PIC.
2583:
2584: * tm-m88k.h, tm-m88kdgux.h,: Don't predefine memcpy and others.
2585: * tm-m88k.h: Fixes for dwarf.
2586: * tm-m88ksvr4.h: Dwarf changes.
2587: * xm-m88k.h xm-m88kdgux.h xm-v88r32.h: Update comments.
2588:
2589: Fri Nov 2 12:30:15 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2590:
2591: * jump.c (comparison_dominates_p): Return 1 if codes are the same.
2592: (thread_jumps): Use get_label_after.
2593:
2594: * a29k.md (movdi): Handle CONST_INT as well as CONST_DOUBLE.
2595: (comparisons): Fix typo in define_split for floating-point NE.
2596:
2597: * reorg.c (fill_slots_from_thread): Don't mark as annulled if no
2598: delay list.
2599:
2600: * loop.c: Allow use of any register to store comparison results.
2601: (loop_skip_over): Don't treat comparison specially; copy all insns
2602: preceeding the jump.
2603: (check_for_endtest, other_reg_use_p): Deleted.
2604: (can_eliminate_biv_p, eliminate_biv): Deleted; code merged and
2605: placed into new maybe_eliminate_p_1.
2606: (may_eliminate_biv, may_eliminate_biv_1): New functions; recursively
2607: look at all rtx to see if every occurrence of a biv can be
2608: eliminated.
2609: (check_eliminate_biv): Deleted; callers changed to call
2610: may_eliminate_biv.
2611: (get_condition): Rework to look into previous insns to find insns
2612: that set the first operand of comparison insns.
2613:
2614: Thu Nov 1 22:07:42 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2615:
2616: * cse.c (fold_rtx, case COMPARE): Only convert compare to test if
2617: HAVE_cc0 is defined.
2618: * combine.c (subst): Copy COMPARE case from fold_rtx.
2619: Simplify things like (ne (eq FOO BAR) (const_int 0)).
2620:
2621: Thu Nov 1 18:06:56 1990 Richard Stallman (rms at mole.ai.mit.edu)
2622:
2623: * math-68881.h (HUGE_VAL): Alternate definition for Suns.
2624:
2625: * config.gcc (sun3, etc.): Assume os4 as default for Sun 3 and Sun 4.
2626:
2627: * tm-i386v.h (STARTFILE_SPEC, LIB_SPEC): Handle -posix.
2628: (CPP_SPEC): New macro.
2629: (LIB_SPEC): Handle -shlib.
2630:
2631: * c-decl.c (init_decl_processing): Make last arg to memcpy and memcmp
2632: an unsigned long, to be like size_t.
2633:
2634: * Makefile.in (hard-params): Depend on gnulib2, not gnulib.
2635:
2636: Wed Oct 31 22:12:33 1990 Richard Stallman (rms at mole.ai.mit.edu)
2637:
2638: * config.gcc (ultrix): New alternative.
2639:
2640: * i386.md (extend*): Change opcode to movsx. Was movs.
2641:
2642: Wed Oct 31 09:41:27 1990 Tom Wood (wood at dg-rtp.dg.com)
2643:
2644: * m88k.md: Deleted an old pattern for subtracting 0.
2645: * m88k.md: Deleted patterns for aligned bit-field insns.
2646: * m88k.md: Changed define_expand to define_insn for mulsi3 and
2647: umulsi3.
2648: * m88k.md: Converted various constructs to use conventional
2649: formatting.
2650: * m88k.md (mak patterns): Fixed transcription errors.
2651:
2652: Wed Oct 31 00:05:54 1990 Richard Stallman (rms at mole.ai.mit.edu)
2653:
2654: * c-decl.c (init_decl_processing): Predefine the ordinary names
2655: of alloca, abs, memcpy, etc.
2656:
2657: * c-decl.c (duplicate_decls): Allow redefining built-in as static,
2658: but optionally warn.
2659:
2660: Tue Oct 30 14:39:17 1990 Richard Stallman (rms at mole.ai.mit.edu)
2661:
2662: * c-decl.c (finish_function): Use DEFAULT_MAIN_RETURN in `main'.
2663: * tm-vms.h (DEFAULT_MAIN_RETURN): Define this.
2664:
2665: * c-parse.y (yylex): Base is not 8 for just `0'.
2666:
2667: * cccp.c (do_define): Invert test of compare_defs.
2668:
2669: * cccp.c (make_definition): Convert newline to newline-newline.
2670:
2671: * Makefile.in (hard-params): Depend on gnulib.
2672:
2673: * m88k.md (divsi3): Delete declarations of gen_... functions.
2674:
2675: Tue Oct 30 14:26:20 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2676:
2677: * cse.c: Rework handling of comparisons to generalize better to
2678: machines that use registers to hold condition code information.
2679: (prev_insn_cc0*): Just store last rtx assigned to cc0 in prev_insn_cc0.
2680: (find_comparison_args): New function.
2681: (fold_rtx): Folded value of cc0 is the value previously stored into it.
2682: Rework handling of comparisons: use find_comparison_args to see what
2683: is being compared. If they are constants, compute the result of the
2684: comparison. If not, see if the two operands are equivalent (only for
2685: non FP or non-IEEE FP). Then see if we have already seen a comparison
2686: involving these operands that lets us give a value to this comparison.
2687: True comparisons return STORE_FLAG_VALUE, not 1.
2688: (fold_cc0): Deleted.
2689: (predecide_loop_entry): Call cse_insn on a copy of each insn at the
2690: loop test to propagate the values of items at the start of the loop.
2691: Then use fold_rtx to see if we know the result of the jump.
2692: (record_jump_equiv): Use new function find_comparison_args.
2693: (cse_insn): Just record value of CC0 if set; don't call fold_cc0.
2694: Don't modify PREV_INSN (insn) if INSN is a copy.
2695: (cse_main): Initialize const_true_rtx to rtx for STORE_FLAG_VALUE.
2696:
2697: * jump.c (comparison_code_p, comparison_dominates_p): New functions.
2698: (thread_jumps): Use comparison_dominates_p.
2699: Remove debugging code.
2700: * reorg.c (condition_dominates_p): Use new function
2701: comparison_dominates_p.
2702:
2703: * emit-rtl.c (next_cc0_user): Don't get confused by being call with a
2704: copy of an insn; use INSN_UID to check for an insn in a delay slot.
2705:
2706: * rtl.c (reg_note_name): Add name for new REG_LABEL note.
2707:
2708: * emit-rtl.c (make_insn_raw): No longer have JUMP_LABEL for INSN.
2709:
2710: Tue Oct 30 09:26:15 1990 Tom Wood (wood at dg-rtp.dg.com)
2711:
2712: * Update what strings in files edited so far.
2713: * tm-m88k.h, tm-m88kdgux.h, tm-m88ksv4r.h: Introduce VERSION_STRING
2714: and VERSION_INFO to more appropriately identify the compiler.
2715:
2716: * tm-m88k.h (ASM_OUTPUT_OPCODE): Stop processing the opcode if `%'
2717: is encountered.
2718: * out-m88k.c (print_operand): Add a tab to %L output. Delete
2719: unused cases.
2720:
2721: * m88k.md: Rework the movstrsi pattern and provide call_block_move
2722: and call_block_move_loop to support expand_block_move.
2723: * out-m88k.c: Rework the block move functions.
2724: * make-m88k, make-m88kdgux: Eliminate movstr.h.
2725:
2726: * m88k.md, out-m88k.c: Eliminate assembler comments.
2727:
2728: * m88k.md (ashlsi3 ashrsi3 lshlsi3 lshrsi3): Eliminate warnings
2729: about out of range shifts.
2730:
2731: * tm-m88k.h, out-m88k.c: Rename CONDITION_CODE_REGNUM CC0_REGNUM.
2732:
2733: Mon Oct 29 18:06:54 1990 Richard Stallman (rms at mole.ai.mit.edu)
2734:
2735: * final.c (final_end_function): Handle dwarf output.
2736: (final_scan_insn): Likewise.
2737: (output_source_line): Likewise, using ASM_OUTPUT_DWARF_LINE.
2738: * toplev.c (rest_of_decl_compilation): Likewise.
2739: (rest_of_compilation, main): Likewise.
2740: * varasm.c (assemble_variable): Likewise.
2741: * flags.h (enum debugger): Define DWARF_DEBUG.
2742:
2743: * cccp.c (do_define): Rewrite criterion for warning.
2744: Don't warn if -D redefining symbol with constant numeric value.
2745:
2746: * toplev.c (output_file_directive): New function.
2747: * sdbout.c (sdbout_filename): Deleted.
2748: * tm-3b1.h, tm-att386.h, tm-encore.h, tm-m88k.h,
2749: tm-mot3300.h, tm-tahoe.h, tm-vaxv.h (ASM_FILE_START): Use that.
2750:
2751: * c-decl.c (named_labels): No longer static.
2752: (pushlevel): Clear named_labels.
2753: (poplevel): Don't clear it here.
2754:
2755: Mon Oct 29 13:32:57 1990 Michael Tiemann (tiemann at cygnus.com)
2756:
2757: * Makefile.in: Update dependencies for various files, mostly cplus-*
2758: files.
2759:
2760: * rtl.def: Remove Sep 26 that added JUMP_LABELs to INSN and
2761: CALL_INSN.
2762: * rtl.h: Add REG_LABEL register note. For INSN and CALL_INSN, the
2763: presence of this register note has the same meaning that a non-NULL
2764: JUMP_LABEL would have with the Sep 26 change.
2765: * jump.c (jump_optimize): Revert to clearing JUMP_LABEL field of
2766: JUMP_INSNs only.
2767: (mark_jump_label): If INSN is an INSN or a CALL_INSN, add a
2768: REG_LABEL note if a LABEL appears (and no such note already exists).
2769: ??? Once recorded, this information appears never to be used.
2770:
2771: * jump.c (delete_jump): The deletion of INSN must take place when
2772: INSN is a simple jump. Also, don't try to optimize if we come
2773: across an insn with the reorg-generated pattern (USE (INSN ...)).
2774:
2775: * cplus-lex.c, cplus-dbxout.c: Remove vestigial support for dumping
2776: and undumping the compiler.
2777:
2778: * Merge cplus diffs from Kenner.
2779: * cplus-cvt.c (convert_to_integer): Fold the COND_EXPR we construct.
2780: * cplus-typeck.c (build_conditional_expr): Ditto in three places.
2781: * cplus-lex.c (yylex,do_pending_inlines): Add conditionals for
2782: _IBMR2. This hair will disappear when pcccp support is merged, but
2783: needed for now.
2784: * cplus-tree.h: Conditionalize use of non-int bitfield types on
2785: ONLY_INT_FIELDS. Also, remove duplication declarations of
2786: get_temp_name, get_temp_aggr, and get_temp_regvar; add declaration
2787: of build_decl_list.
2788:
2789: Mon Oct 29 11:45:03 1990 Richard Stallman (rms at mole.ai.mit.edu)
2790:
2791: * fixincludes: Fix missing semi in rusers.h.
2792:
2793: Mon Oct 29 07:07:47 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2794:
2795: * flow.c (mark_used_regs): When converting "...*p...; q = p + size"
2796: to "q = p, ...*q..., q = q + size", show that Q is needed after INSN.
2797:
2798: * romp.md (negdi): Directly generate assembly code rather than
2799: converting this into a MINUS.
2800:
2801: * fold-const.c (fold, case COND_EXPR): Add missing condition in test
2802: for (A ? 0 : A).
2803:
2804: Sun Oct 28 15:01:19 1990 Richard Stallman (rms at mole.ai.mit.edu)
2805:
2806: * flow.c (find_basic_blocks): An indirect jump can go
2807: to any label whose address is used as data.
2808:
2809: * m68k.md (zero-extend QI): Use gen_rtx, not change_address.
2810:
2811: * Makefile.in (USER_H): List va-*.h explicitly.
2812: (toplev.o): Depend on RTL_H.
2813: (stamp-*): Depend on move-if-change.
2814: (install-headers): Depend on various header files.
2815: (install-man): Depend on gcc.1.
2816: (gcc.o): Depend on gvarargs.h and obstack.h.
2817:
2818: * Makefile.in: Make sure every `if' has an `else'.
2819:
2820: * c-typeck.c (build_binary_op_nodefault): Prevent warning for
2821: variable shift count.
2822:
2823: * i860.md (movsf): Handle moving from CONST_DOUBLE to reg or mem.
2824:
2825: Sun Oct 28 09:39:14 1990 Michael Tiemann (tiemann at cygnus.com)
2826:
2827: * jump.c (delete_jump): The deletion of INSN must take place when
2828: INSN is a simple jump. Also, don't try to optimize if we come
2829: across an insn with the reorg-generated pattern (USE (INSN ...)).
2830:
2831: * sparc.md, tm-sparc.h, out-sparc.c: Significantly rewritten to take
2832: advantage of new 2.0 optimization capabilities.
2833: * old-sparc.md, tm-old-sparc.h, out-old-sparc.c: These are copies of
2834: the above files before the rewrite. They may be interesting for
2835: measuring performance of old vs. new machine description idioms.
2836:
2837: Sun Oct 28 00:22:40 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2838:
2839: * loop.c (scan_loop): Don't think that a branch to an end-test of
2840: a containing look is actually the branch to the end-test of the
2841: outer loop.
2842:
2843: * reload.c (indirect_ok): Deleted.
2844: (find_reloads): Accept new arg IND_LEVELS instead of old IND_OK;
2845: pass this to find_reloads_address and find_reloads_toplev.
2846: (find_reloads_toplev): Accept IND_LEVELS and pass to
2847: find_reloads_address.
2848: (find_reloads_address): Accept IND_LEVELS and pass it on to
2849: find_reloads_address_1.
2850: When calling ourself recursively for a MEM as an address, show
2851: one indirect level has been used.
2852: (find_reloads_address_1): Accept IND_LEVELS and pass it to ourselves
2853: in recursive calls and to find_reloads_address.
2854: * reload1.c (spill_indirect_levels): New var; used to be
2855: spill_indirect_ok.
2856: (reload): Compute number of levels of indirection and set it into
2857: spill_indirect_levels.
2858: (reload, reload_as_needed): Pass spill_indirect_levels not
2859: spill_indirect_ok.
2860:
2861: * reload.c (find_reloads): Make similar change to "V" as "O".
2862:
2863: * reload1.c (eliminate_regs): For binary operations, don't call
2864: recursively on second arg if null (for EXPR_LIST).
2865: (eliminate_regs_in_insn): Perform register elmination in the
2866: REG_NOTES of an insn when we are doing it for the last time.
2867:
2868: * vax.md (call_value_pop): Use correct operand number for number
2869: of bytes popped.
2870:
2871: * tm-romp.h (EXTRA_CONSTRAINT): Ensure we ignore reg_renumber if
2872: register allocation hasn't been done yet.
2873:
2874: * function.c (init_function_start): Initialize reg_renumber to zero;
2875: it is checked in rtx_renumbered_equal_p.
2876:
2877: * loop.c (loop_optimize): Ensure we assign a new LUID to all
2878: special notes, including NOTE_INSN_FUNCTION_BEG (0).
2879:
2880: Sat Oct 27 12:22:46 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2881:
2882: * out-a29k.c (print_operand, output_prolog): Don't try to fill delay
2883: slots with parts of epilogue or prologue unless -O -fdelayed-branch.
2884:
2885: * tm-rs6000.h (STRUCTURE_SIZE_BOUNDARY): Should be 8.
2886:
2887: * reorg.c (mark_target_live_regs): Ignore REG_DEAD notes for pseudos;
2888: they must not have gotten hard registers.
2889:
2890: Fri Oct 26 11:30:28 1990 Richard Stallman (rms at mole.ai.mit.edu)
2891:
2892: * gcc.c (main): Set machine_suffix before reading specs file.
2893:
2894: * c-typeck.c (build_binary_op_nodefault): Warn for bad shift counts.
2895:
2896: * stor-layout.c (layout_record):
2897: BITFIELD_NBYTES_LIMITED affects bitfields only.
2898:
2899: * loop.c (note_addr_stored): Don't assume PLUS in address is aggregate.
2900:
2901: Fri Oct 26 00:46:09 1990 Michael Tiemann (tiemann at cygnus.com)
2902:
2903: * cplus-tree.h: Declare `build_type_conversion' once instead of
2904: three times.
2905:
2906: * loop.c (loop_skip_over): Handle machines without cc0.
2907: (labels_in_range_p): Fixed typo where this function returned 0 when
2908: it meant to return 1.
2909: (check_for_endtest): New function. Returns non-zero when
2910: argument is a simple conditional test insn (suitable for being the
2911: endtest of a loop).
2912: (strength_reduce): Use `check_for_endtest' to identify the endtest.
2913: Also fixed some typos in comments.
2914: (can_eliminate_biv): Use `check_for_endtest' here, too.
2915: (get_condition): Generalized to handle machines without cc0. Now
2916: THIS_CC_RTX is the value of the cc rtx.
2917:
2918: * integrate.c (expand_inline_function): Conditionalize away
2919: cc0-specific code with HAVE_cc0.
2920: (try_constants): Add appropriate declaration for ORIG.
2921: (try_fold_condition): Generalized to work for non-cc0 condition
2922: values.
2923:
2924: * cplus-type2.c (digest_init): Add missing declaration of FIELD.
2925: * rtl.h: Add missing declaration of plus_constant_for_output.
2926: * jump.c (can_reverse_comparison): Fixed typo.
2927: (delete_jump): Made to work without cc0_rtx.
2928:
2929: Fri Oct 26 00:01:27 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2930:
2931: * reorg.c: Conditionalize references to CC0_RTX on HAVE_cc0.
2932:
2933: * reload.c (find_reloads): For the `o' constraint, if IND_OK is
2934: true, use offsettable_memref_p instead of the nonstrict version.
2935:
2936: * jump.c (delete_jump): If HAVE_cc0 is not defined, it is not safe to
2937: delete previous insn that sets a condition code register, because it
2938: might not be dead. Rework to look at all registers dying in this insn
2939: and delete the first previous insn that sets any such register if that
2940: is all it does.
2941:
2942: * jump.c (jump_optimize): Remove extraneous call to next_active_insn
2943: in optimization of "if (...) x = 1; else ...; if (x) ...".
2944:
2945: * cse.c (predecide_loop_entry): Don't set cc_value to null and then
2946: stick it in the rtl.
2947:
2948: * rtlanal.c (find_next_ref): Deleted from here.
2949: * explow.c: Include hard-reg-set.h for find_next_ref.
2950: (find_next_ref): Moved to here.
2951: * Makefile.in (explow.o): Includes hard-reg-set.h.
2952:
2953: Thu Oct 25 21:37:15 1990 Richard Stallman (rms at mole.ai.mit.edu)
2954:
2955: * va-mips.h (va_list): Put __ in member names.
2956: (va_dcl): Rename _va_alist to __va1_alist.
2957: * va-i860.h (__va_struct): Put __ in member names.
2958: * gvarargs.h, va-*.h: (__va_ellipsis): New macro.
2959: (va_dcl): Use that.
2960:
2961: * c-typeck.c (convert_for_assignment): For functions, reverse the
2962: usual criterion for warning about const vs non-const. Volatile also.
2963:
2964: * m88k.md, tm-m88k.h, out-m88k.c: Rewrites by [email protected].
2965: * tm-m88kdgux.h, tm-v88r32.h, tm-m88ksvr4.h: New files.
2966: * xm-m88kdgux.h, xm-v88r32.h, xm-m88ksvr4.h: New files.
2967: * make-m88k, make-m88kdgux: New files.
2968: * config.gcc (m88k-dgux, m88k-v88r32, m88k-svr4): New alternatives.
2969:
2970: * gvarargs.h, gstdarg.h: Include alternate file for m88k.
2971:
2972: * expr.c (expand_expr): For ARRAY_REF, preserve const and volatile.
2973:
2974: * expr.c (expand_builtin): Handle strcmp and memcmp with function calls
2975: if can't be open coded.
2976:
2977: * function.c (expand_function_end): Round trampoline addr to init.
2978: (round_trampoline_addr): Fix braino in alignment.
2979:
2980: Thu Oct 25 14:54:18 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
2981:
2982: * jump.c: Now includes insn-config.h.
2983: (jump_optimize): inequality_comparisons_p takes only one operand again.
2984: (can_reverse_comparison_p): Handle case where a register is used
2985: for the condition code; if we can't easily find the COMPARE that
2986: was used to set the register, say we can't reverse the comparison.
2987: * Makefile.in (jump.o): Now includes insn-config.h.
2988:
2989: * jump.c (jump_optimize): Put back change removed on Oct 21st;
2990: emit_store_flag has now been updated.
2991:
2992: * rtlanal.c (inequality_comparisons_p): Reject any ordered
2993: comparison; we need not just reject when comparing against
2994: cc0_rtx.
2995: * recog.c (next_insn{,s}_test_no_inequality): inequality_comparisons_p
2996: again has only one operand.
2997: * genattrtab.c (cc0_rtx): No longer needed; remove change of Oct 21.
2998:
2999: * genconfig.c (have_cc0_flag): New variable.
3000: (walk_insn_part): Set it when we see CC0.
3001: (main): Write #define HAVE_cc0 when it is set.
3002: * flow.c: Now includes insn-config.h.
3003: * Makefile.in (flow.o): Likewise.
3004:
3005: * combine.c (subst): If X and FROM are the same register number,
3006: but in different modes, force the combine not to be done.
3007: Add missing initialization of undobuf.storage.
3008:
3009: Thu Oct 25 11:34:35 1990 Michael Tiemann (tiemann at cygnus.com)
3010:
3011: * sched.c (new_sometimes_live): Protect this function in case it is
3012: called with (OFFSET,BIT) that evaluates to >= MAX_REGNO.
3013:
3014: * jump.c (sets_cc0_p): Conditionalized to abort if called when
3015: machine does not support cc0.
3016:
3017: * rtlanal.c (reg_set_p): Now non-static.
3018: * rtlanal.c (rtx_varies_p): Handle LO_SUM more accurately.
3019: * rtlanal.c (find_next_ref): New function. Returns the insn that
3020: next references REG after INSN, or 0 if REG is clobbered before next
3021: referenced or it cannot easily find a reference to REG.
3022:
3023: * recog.c (next_insn_tests_no_inequality): Conditionalized on
3024: HAVE_cc0.
3025:
3026: * rtlanal.c (inequality_comparisons_p): Takes new argument
3027: THIS_CC0_RTX which is the rtl for the condition code value we are
3028: concerned about testing. All callers changed.
3029:
3030: * flow.c (propagate_block,mark_used_regs): Conditionalize
3031: specialized cc0 handling only if HAVE_cc0 is defined.
3032:
3033: * genemit.c (gen_exp): In REG case, If CC0_REGNUM is defined,
3034: save space by using REG_CC0_RTX instead of allocating a new
3035: (REG, mode, CC0_REGNUM) rtx if the mode is SImode.
3036:
3037: * final.c (output_addr_const): Handle PC for P.I.C. code generation.
3038: Also, put parens around CONST expressions so that precedence can be
3039: maintained.
3040: * final.c (final_scan_insn): Don't look for redunant compares
3041: except when HAVE_cc0 is defined.
3042: Also, use `find_cc' to locate the rtx functioning as the
3043: condition code register in order to perform appropriate calls
3044: to `alter_cond'.
3045:
3046: * expr.c (expand_expr): Supply missing arg in calls to `store_expr'.
3047:
3048: * expmed.c (emit_store_flag): New argument COMPARISON is the
3049: comparison operation whose result we store.
3050:
3051: * recog.c (offsettable_address_p,adj_offsettable_operand): Use
3052: `plus_constant_for_output' instead of `plus_constant' since we
3053: are testing conditions which rely on being able to add small
3054: offsets to e.g. LO_SUM operands.
3055: * explow.c (plus_constant): No special handling for LO_SUM. It is
3056: not valid to add a constant to a term with LO_SUM, since the
3057: constant may need to be added to the high bits that form the sum,
3058: and those high bits are not readily available.
3059: * explow.c (plus_constant_for_output): Same as `plus_constant'
3060: except that we do allow adding constants to LO_SUM terms. This
3061: function works only in special cases such as for
3062: `adj_offsettable_operand' and `offsettable_address_p'.
3063:
3064: * emit-rtl.c: Declare reg_cc0_rtx which is like cc0_rtx, but
3065: is a register instead of a special form. reg_cc0_rtx should
3066: be used when representing the condition code register on a
3067: machine where condition codes are only set if explicitly set.
3068: For machines which allow arbitrary registers to be used as
3069: condition code registers (such as the MIPS and 88k), normal
3070: pseudo registers should be used instead.
3071: * emit-rtl.c (next_cc0_user,prev_cc0_setter): Conditionalized
3072: on HAVE_cc0.
3073: * emit-rtl.c (find_cc): New function. Given INSN, returns
3074: the rtx of what functions as the condition code register for
3075: INSN. On machines which use cc0_rtx, this is always cc0_rtx.
3076: On machines which have a dedicated register for cc0, this is
3077: that register. On machines which allocate pseudos for holding
3078: condition codes, this is the pseudo found in a REG_CC0 note.
3079: Otherwise, this function returns 0.
3080: * emit-rtl.c (init_emit_once): Allocate `reg_cc0_rtx' if
3081: CC0_REGNUM is defined.
3082:
3083: * cse.c (make_regs_equiv): Don't consider making a reg
3084: equivalent to another reg whose class is NO_REGS.
3085: * cse.c (canon_reg): Don't canonicalize a register to
3086: one whose class is NO_REGS.
3087: * cse.c (fold_rtx): Conditionalize code for handling cc0_rtx
3088: with HAVE_cc0.
3089: * cse.c (predecide_loop_entry): Generalize code to use either
3090: a register or cc0_rtx.
3091: * cse.c (cse_insn): Conditionalize code for handling cc0_rtx
3092: with HAVE_cc0.
3093:
3094: * combine.c (combine_instructions,try_combine,subst):
3095: Conditionalize code handling cc0_rtx with HAVE_cc0.
3096: * combine.c (simplify_set_cc0_and): Abort if HAVE_cc0 is not
3097: defined.
3098: * combine.c (try_distrib): Add break at end of switch cases. It is
3099: dangerous to leave the last cases of a switch statement to fall
3100: through since new cases added after will get fallen into.
3101:
3102: * recog.c (validate_change): Always succeed for an asm insn,
3103: since recog always fails to recognize asm insns. This is
3104: needed for virtual register instantiation in asm insns.
3105:
3106: * cse.c (cse_main): When following jumps, notice whether a
3107: particular basic block causes CSE_JUMPS_ALTERED to become set. When
3108: this happens, repeat the scan.
3109: * cse.c (refers_to_mem_p): Changed parameter name REG to BASE,
3110: which is more accurate. Also, taught it how to cope with
3111: LO_SUM rtl constructs.
3112:
3113: Wed Oct 24 15:36:12 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3114:
3115: * calls.c (store_one_arg): Accept additional arg, FNDECL.
3116: Don't save argument area if it is within the REG_PARM_STACK_SPACE
3117: area, but mark the area in use.
3118: (expand_call): If ACCUMULATE_OUTGOING_ARGS and REG_PARM_STACK_SPACE,
3119: treat the stack area for the registers as be clobbered by the called
3120: routine (e.g., if it was compiled without -O) and save and restore
3121: it if it was previously used for arguments in a similar manner to
3122: the remainder of the argument area (done by store_one_arg).
3123:
3124: * calls.c (expand_call): Support new description macro,
3125: STACK_PARMS_IN_REG_PARM_AREA.
3126: * function.c (assign_parms): Likewise.
3127:
3128: Wed Oct 24 12:47:21 1990 Richard Stallman (rms at mole.ai.mit.edu)
3129:
3130: * c-typeck.c (build_array_ref): Use main variant for value type.
3131:
3132: * genoutput.c (output_prologue): Let SEPARATE_AUX_OUTPUT
3133: cause aux-output.c not to be included.
3134: Makefile.in (aux-output2.c): Copy aux-output.c and then compile it.
3135:
3136: * reload.c (subst_reg_equivs): Treat HIGH like other constants.
3137:
3138: * reload.c (push_reload): When testing hard reg for validity,
3139: test subsequent regs only against class, not for HARD_REGNO_MODE_OK.
3140:
3141: Tue Oct 23 22:49:33 1990 Richard Stallman (rms at mole.ai.mit.edu)
3142:
3143: * cccp.c (collect_expansion): Skip ## at start after the error.
3144:
3145: * gcc.c (default_compilers): Handle - as suffix.
3146: (main): Make that a special case; it matches only exactly `-'.
3147:
3148: Tue Oct 23 22:40:33 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3149:
3150: * romp.md (store{s,h,q}i pattern): Allow "b" for clobbered pseudo
3151: in addition to "d" in first alternative.
3152:
3153: * reload1.c (eliminate_regs): IF_THEN_ELSE isn't a unary operation.
3154:
3155: Tue Oct 23 20:35:13 1990 Richard Stallman (rms at mole.ai.mit.edu)
3156:
3157: * m68k.md (zero-extend QI): When pushing, store value at 1(sp).
3158:
3159: Mon Oct 22 12:27:08 1990 Richard Stallman (rms at mole.ai.mit.edu)
3160:
3161: * cccp.c (rescan): In the loop that handles numbers, discard \newline.
3162: Also make `..' terminate a preprocessing number.
3163:
3164: * Makefile.in (tmpgnulib, stamp-gnulib2): Do `set -e'.
3165:
3166: * gcc.c (default_compilers): Give __GNUC__ value 2.
3167: Don't define it for .S files.
3168:
3169: Mon Oct 22 07:33:42 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3170:
3171: * optabs.c (emit_indirect_jump): New function; now checks predicate
3172: of indirect_jump.
3173: * stmt.c (expand_computed_goto, expand_goto): Use new function instead
3174: of directly emitting indirect jump.
3175:
3176: * flow.c (mark_set_1): Make LOG_LINKS for hard registers.
3177: * combine.c (subst): Make new macro COMBINE_RTX_EQUAL_P which
3178: considers things equal if they are the identical RTX or the same
3179: register with the same mode; use to see if something changed and
3180: if we have a match.
3181:
3182: * cccp.c (S_ISREG): Use argument instead of global.
3183: (main): Correct sense of S_ISREG usage.
3184: (check_precompiled): Use S_ISREG.
3185:
3186: * flow.c (mark_used_regs): Don't allow reg_next_use to point to
3187: a NOTE; either point it to replacement insn or invalidate it.
3188:
3189: Mon Oct 22 00:13:12 1990 Richard Stallman (rms at mole.ai.mit.edu)
3190:
3191: * c-parse.y (xdecls): No warning unless -pedantic.
3192:
3193: Sun Oct 21 17:49:24 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3194:
3195: * genattrtab.c (cc0_rtx): Define, referenced in rtlanal.c.
3196:
3197: * jump.c (jump_optimize): Remove code that depends on changes to
3198: emit_store_flag that haven't been made yet.
3199:
3200: * expmed.c (extract_bit_field): Correctly check for bitfield
3201: completely filling a mode.
3202:
3203: * out-romp.c (output_epilogue): Correctly write number of words of
3204: arguments into trace table.
3205:
3206: * calls.c (store_one_arg): Fix error in change of Oct 19th.
3207:
3208: * reorg.c (mark_target_live_regs): Revert back to old behavior
3209: of scanning all insns, even those in delay slots.
3210: (fill_simple_delay_slots): Need only call update_block if we move
3211: an insn across a label.
3212:
3213: * Makefile.in (LIBFUNCS): Use consistent naming convention for
3214: comparison routines; gnulib.c was always correct.
3215:
3216: * function.c (assign_parms): Don't overwrite DECL_INCOMING_RTL when
3217: we are called for the second time.
3218:
3219: * integrate.c (initialize_for_inline): Don't make a new return label
3220: here; the maximum label number has already been computed.
3221: (save_for_inline_copying, save_for_inline_no_copy): Do it here instead.
3222:
3223: * reload.c (find_reloads_address): For indirect address where the
3224: underlying address is also invalid, ensure that we substitute into
3225: the MEM that we will use.
3226:
3227: Sun Oct 21 14:12:47 1990 Richard Stallman (rms at mole.ai.mit.edu)
3228:
3229: * reload.c (find_equiv_regs): Reject reg that overlaps goal.
3230:
3231: * expmed.c (extract_bit_field): For big fields, make sure
3232: value really goes in the target.
3233:
3234: * expr.c (expand_builtin): Delete __builtin_varargs.
3235: (EXPAND_BUILTIN_SAVEREGS): New macro says how to do __builtin_saveregs.
3236:
3237: * calls.c (expand_call): No "can't inline" warning if -fno-inline.
3238:
3239: * stddef.h: Add missing #endif.
3240:
3241: Sat Oct 20 14:33:14 1990 Richard Stallman (rms at mole.ai.mit.edu)
3242:
3243: * function.c (round_trampoline_addr): New function.
3244: (trampoline_address): Use that.
3245:
3246: Fri Oct 19 15:13:31 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3247:
3248: * calls.c (store_one_arg): Don't mark stack area used until after
3249: we have written into it; if we do it before, the restore might
3250: clobber a function result being put into that stack area.
3251:
3252: * objc-actions.c (print_lang_statistics): Add empty function.
3253:
3254: * recog.c (inequality_comparisons_p): Deleted from here.
3255: * rtlanal.c (inequality_comparisons_p): Moved to here; not static.
3256:
3257: * a29k.md (extendhisi2): Fix typo in define_split.
3258:
3259: * Makefile.in (integrate.o): Includes integrate.h.
3260: (reorg.o): Includes insn-flags.h.
3261:
3262: Fri Oct 19 14:49:26 1990 Michael Tiemann (tiemann at cygnus.com)
3263:
3264: * sdbout.c (sdbout_symbol): If a variable belongs to an inline
3265: function, the decl's rtl may not be rewritten by alter_reg. So if
3266: we have a variable allocated to a pseudo, just get the hard register
3267: number from `reg_renumber'. ?? But I thought that COFF was so
3268: losing that it was decided one could not represent debug info for
3269: inline functions in COFF.
3270:
3271: Fri Oct 19 13:21:25 1990 Richard Stallman (rms at mole.ai.mit.edu)
3272:
3273: * fold-const.c (split_tree): Use NEGATE_EXPR to negate *conp.
3274:
3275: Fri Oct 19 00:15:21 1990 Michael Tiemann (tiemann at cygnus.com)
3276:
3277: * version.c: Bumped to 1.90.03.
3278:
3279: * tree.c: Added facility for gathering statistics on the number of
3280: tree nodes allocated and the size in bytes they occupy. The
3281: statistics are by tree_node_kind, which is almost like using the
3282: tree code letter, but has more resolution for dealing with different
3283: kinds of `x' nodes. The facility is enabled by compiling the
3284: compiler with -DGATHER_STATISTICS and using the -fstats flag.
3285:
3286: * expr.c (do_tablejump): Emit a BARRIER after the jump that performs
3287: the tablejump.
3288:
3289: * cplus-typeck.c (c_expand_return): Rewritten so that the function
3290: value return register is not used except as a target of the function
3291: return value.
3292:
3293: * cplus-tree.c (build_cplus_new): New argument WITH_CLEANUP_P
3294: controls whether this functino should build its result with a
3295: cleanup or not. All callers changed.
3296:
3297: * cplus-lex.c: File updated to latest changes to c-parse.y's lexical
3298: analyzer.
3299:
3300: * cplus-except.c (cplus_expand_raise): New parameter FOR_RERAISE
3301: is used to control whether to output extra gotos or not. When
3302: nonzero, the compiler can avoid writing out the extra gotos that are
3303: otherwise needed to avoid warning messages.
3304:
3305: * cplus-decl2.c (flag_short_double): Add support for this option.
3306:
3307: * cplus-decl.c (finish_function): Always cause returns to jump to
3308: the return label. This allows -Wreturn to give meaningful error
3309: messages.
3310:
3311: * jump.c (invert_exp): Make this non-static.
3312: (jump_optimize): Reorganization and simplification of main inner
3313: loop. Comments added explaining what the optimizers are looking
3314: for. New optimization added that optimizes for consecutive testing
3315: of an inequality test followed by an equality test (or vice-versa).
3316: Changes made to accommodate reorg.c on Sparc. Code for
3317: cross-jumping return statements was previously dead in this
3318: function; as a result of the reorganization, it is now live.
3319: (find_cross_jump): Added temporary variable PREV1 to hold return
3320: value of `prev_nonnote_insn' instead of calling the function 3 times
3321: in a row. Also changed so that USE or CLOBBERS are not cross-jumped
3322: unless some real insns are also cross-jumped. This helps reorg.
3323: (redirect_jump): Fixed a return that returned no value so that it
3324: returns 1.
3325: (rtx_renumbered_equal_p): Test that reg_renumber is nonzero before
3326: using it. We may want to call this function earlier than by the
3327: time that array has been initialized.
3328:
3329: * integrate.c (save_for_inline_{copying,nocopy}): New functions to
3330: replace `save_for_inline'. save_for_inline_copying saves the rtl
3331: for inline functions by copying the rtl to the
3332: maybepermanent_obstack. It is called when the rtl of the current
3333: function is going to be compiled immediately.
3334: save_for_inline_nocopy takes advantage of the fact that inline
3335: function rtl is already allocated to the maybepermanent_obstack, and
3336: need therefore not be copied if it's not going to be modified by the
3337: compiler (such as by `rest_of_compilation').
3338: ({initialize_for,finish}_inline): New helper routines for
3339: save_for_inline_... functions.
3340: (note_modified_parmregs): Function called by `mark_stores' to note
3341: whether parameters are assigned to in the body of an inline
3342: function.
3343: New interface, integrate.h, provides declarations for functions used
3344: by other routines that might want to copy chunks of rtl.
3345: ({save,try}_constants): Now global (for integrate.h).
3346: (mark_stores): Ditto.
3347: (try_fold_condition): Ditto.
3348:
3349: * dbxout.c (dbxout_symbol): If a variable belongs to an inline
3350: function, the decl's rtl may not be rewritten by alter_reg. So if
3351: we have a variable allocated to a pseudo, just get the hard register
3352: number from `reg_renumber'.
3353:
3354: * varasm.c (output_const_pool): No longer static.
3355: (assemble_variable): Do output debugging information for global
3356: register variables. GDB does the right thing for global register
3357: variables.
3358:
3359: * toplev.c: New flag `warn_inline' for warning when a function
3360: declared inline was not in fact inlined. Also, new flag
3361: `flag_no_inline' which disables function inlining, but retains
3362: other properties of inline functions (such as lazy compilation
3363: and write-only-if-needed).
3364: * toplev.c (compile_file): Changed logic for inline function
3365: handling to work with `warn_inline' and `flag_no_inline'.
3366: Also modified to call `save_for_inline_nocopy' when insns are to be
3367: saved but not immediately compiled.
3368:
3369: * function.c (instantiate_decls): If instantiating a function
3370: which was saved for inline expansion, preserve the rtl created
3371: by the instantiation as well.
3372:
3373: * flags.h (flag_no_inline): New flag; if nonzero, then no
3374: calls are inlined, regardless of their declaration. We still
3375: save the insns for these functions in DECL_SAVED_INSNS so that
3376: the functions need not be written if they are never called.
3377:
3378: * calls.c (expand_call): If `flag_no_inline' is set, don't
3379: inline the call, regardless of whether it was declared inline
3380: or not.
3381:
3382: Thu Oct 18 13:10:26 1990 Richard Stallman (rms at mole.ai.mit.edu)
3383:
3384: * rtl.def (CODE_LABEL): Add new string field.
3385: * rtl.h (LABEL_NAME): Define macro for access.
3386: * emit-rtl.c (gen_label_rtx): Initialize it to 0.
3387: * stmt.c (expand_label): Store proper name of label.
3388: * final.c (final_scan_insn): Call sdbout_label.
3389:
3390: * tree.h (built_in_function): Add BUILT_IN_VARARGS.
3391: * c-decl.c (init_decl_processing): Declare __builtin_varargs.
3392: * expr.c (expand_builtin): Generate code for it.
3393: Uses new macro EXPAND_BUILTIN_VARARGS.
3394:
3395: * sdbout.c (SDB_IS_FAKE): Macro deleted.
3396: (MAKE_LINE_SAFE): New macro.
3397: (sdbout_begin_block, sdbout_end_block, sdbout_end_function): Use it.
3398: (sdbout_one_type): Delete spurious second arg in all callers.
3399: (sdbout_types, sdbout_end_function):
3400: Use sdbout_dequeue_anonymous_types.
3401: (sdbout_label): New function.
3402:
3403: * expr.h (FUNCTION_ARG_BOUNDARY): Default is now PARM_BOUNDARY.
3404:
3405: * gvarargs.h, va-*.h (va_dcl):
3406: Add ellipsis so current_function_varargs is set.
3407:
3408: * jump.c (jump_optimize): Exit push-optimize loop at end of insns.
3409:
3410: Thu Oct 18 07:09:06 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3411:
3412: * reorg.c: Major reorganization. Many special cases have been moved
3413: into more general code and an overall restructuring has been done.
3414: Numerous bugs have been fixed. Highlights:
3415: (dbr_schedule): First make list of all insns needing filling. Then
3416: iterate for two passes. In each pass, try two methods of filling
3417: delay slots, then do some canonicalizations, which may create more
3418: insns to fill.
3419: (fill_simple_delay_slots): Now uses list of insns that need filling,
3420: rather than making such a list.
3421: Enhance code that finds insns when code paths merge to allow multiple
3422: uses of the label as long as all uses are in the skipped code.
3423: (struct resource): Notice volatile memrefs.
3424: (stop_search_p): Allow option to continue when label is reached.
3425: (find_end_label, make_return_insns): New functions; when we have a
3426: filled branch that is really a RETURN, first convert it to a jump
3427: to a return label and then later see if the insns in the delay slots
3428: are also valid for a RETURN.
3429: (mostly_true_jump): Test for branch to loop beginning rather than
3430: branch at end of loop. Also, conditional return insns predict false.
3431: (own_thread_p): New function to replace fall_through_to_p.
3432: (try_merge_delay_insns): Only support merging insns already in an
3433: insns delay list.
3434: (get_branch_condition, condition_dominates_p): New functions.
3435: (steal_delay_list_from_{target,fallthrough}): New functions to
3436: replace steal_delay_list.
3437: (redundant_insn_p): New function.
3438: (update_block, mark_target_live_regs, dbr_schedule): When moving
3439: an insn not at the front of the basic block to a delay slot,
3440: leave a "ghost" USE so that we can track things livened and killed.
3441: (fill_slots_from_thread): Eliminate use of static vars for number
3442: of slots to fill and already filled.
3443: Try to modify an insn that follows a register-register copy to use
3444: the original register; this may create a delay-slot opportunity.
3445: (try_hoist_target{,_1}): Deleted.
3446: (relax_delay_slots): Rewritten to just perform canonicalizations
3447: previously done elsewhere. No actual delay slot filling is done
3448: here. Any new delay slots created will hopefully be filled in the
3449: next pass around the loop in dbr_schedule.
3450:
3451: * expr.c (emit_push_insn): Don't try to compute a SUBREG of a
3452: hard register in a non-integer mode when pushing a "partial" arg.
3453:
3454: * recog.c (validate_change, apply_change_group): After reload, ensure
3455: that operands meet the constraints by calling constrain_operands.
3456: (validate_replace_rtx_1): Consider two rtx equal if they refer to
3457: the same register.
3458:
3459: * jump.c (jump_optimize): Extend change of Oct 16th to handle
3460: the other usage of find_equiv_reg; remove invalid death notes there.
3461:
3462: * rs6000.md, tm-rs6000.h, out-rs6000.c, xm-rs6000.h, make-rs6000:
3463: New files.
3464:
3465: * out-a29k.c (extract_subword): Use gen_{high,low}part from
3466: an FP CONST_DOUBLE if host and target float formats are the same
3467: or REAL_IS_NOT_DOUBLE.
3468:
3469: * out-romp.c (output_fpop, output_fpops): Provide fr0 as a scratch
3470: register unless it is used in the insn.
3471:
3472: * romp.md: In combined set CC0 and move, optimize case where move
3473: is nop.
3474: (DF moves): Fix typo in generation of `get' insn.
3475: Don't split if input is CONST_DOUBLE because we can't easily
3476: generate the proper constants.
3477: (call patterns): Copy data area address via a pseudo to allow
3478: better CSE'ing.
3479:
3480: * tm-romp.h (RTX_COSTS): Memory is expensive, except for a reference
3481: to our own data area, which is very cheap.
3482: (ADDRESS_COST): References to the constant pool are as cheap as
3483: register + offset, since that's what it will be.
3484:
3485: * emit-rtl.c (gen_{low,high}part): Can often extract word from FP
3486: CONST_DOUBLE when host and target floating formats agree.
3487: (add_insn_after): No longer static.
3488:
3489: * reload1.c (reg_equiv_memory_loc): Renamed from reg_equiv_stack_slot
3490: and now static.
3491: (reload): If have equivalence with constant that is not a legitimate
3492: constant operand, force it into memory and handle this as an
3493: equivalence to memory.
3494: * reload.h (reg_equiv_stack_loc): Deleted.
3495:
3496: Wed Oct 17 20:50:58 1990 Richard Stallman (rms at mole.ai.mit.edu)
3497:
3498: * gcc.c, cccp.c (main): Use TARGET_VERSION if -v.
3499:
3500: * expmed.c (extract_bit_field): Typo in last change.
3501:
3502: * Makefile.in (tmpgnulib): Support assembler files named *.asm.
3503:
3504: * gcc.c (do_spec_1): Null-terminate error message.
3505:
3506: * sdbout.c (sdbout_symbol): Handle subreg as DECL_RTL.
3507: This happens for vars from the parms of inline functions.
3508: * dbxout.c (dbxout_symbol): Likewise.
3509:
3510: * genattr.c (fancy_abort): New function, as in gen*.c.
3511:
3512: Wed Oct 17 14:53:48 1990 Michael I. Bushnell (mib at geech.ai.mit.edu)
3513:
3514: * pcp.h: New file.
3515:
3516: * cccp.c: Support use of precompiled files
3517: Include "pcp.h".
3518: (no_precomp, stringlist, stringlist_tailp): New variables.
3519: (union hashval): New field `keydef'.
3520: (enum nodetype): New alternative `T_PCSTRING'.
3521: (main): Support -noprecomp.
3522: Use write_output to write output.
3523: (rescan): Call pcstring_used for T_PCSTRING symbols.
3524: (do_include): New local variables pcftry, pcfname, pcf, pcfbuf,
3525: pcfbuflimit, and pcfnum.
3526: Check for possible use of precompiled files.
3527: (check_precompiled): New function.
3528: (check_preconditions): New function.
3529: (pcfinclude): New function.
3530: (pcstring_used): New function.
3531: (write_output): New function.
3532: (create_definition): New function.
3533: (do_define): Moved most of the work into create_definition.
3534: (dump_single_macro): New function.
3535: (dump_all_macros): Moved most of the work into dump_single_macro.
3536: (dump_defn_1): New argument OF.
3537: (dump_arg_n): New argument OF.
3538:
3539: * cccp.c: Support generation of precompiled files
3540: (pcp_outfile, pcp_inside_if): New variables.
3541: (struct definition): New field `predefined'.
3542: (main): Support -pcp.
3543: (rescan): Don't expand macros outside #if during -pcp.
3544: (special_symbol): Error for most special symbols during #if in -pcp.
3545: Output precondition for T_CONST and T_SPEC_DEFINED symbols.
3546: (eval_if_expression): Set and clear pcp_inside_if.
3547: (do_ifxdef): Output preconditions.
3548:
3549: Tue Oct 16 13:22:05 1990 Richard Stallman (rms at mole.ai.mit.edu)
3550:
3551: * stor-layout.c (layout_record): For PCC_BITFIELD_TYPE_MATTERS,
3552: make it true that zero-length field affects alignment of next field.
3553:
3554: * rtlanal.c (get_integer_term, get_related_value): Moved from cse.c.
3555:
3556: * jump.c (jump_optimize): When reusing value via find_equiv_reg,
3557: delete obsolete death note.
3558:
3559: * expmed.c (extract_bit_field, store_bit_field):
3560: Handle fields wider than a word.
3561: Restrict special case for word-sized field to aligned words.
3562:
3563: * expmed.c (extract_bit_field, store_bit_field): Don't let
3564: BESTMODE be bigger than the insn can handle.
3565:
3566: * Makefile.in (tmpgnulib): Fix typos handling LIBFUNCS_EXTRA.
3567:
3568: * cccp.c (handle_directive): Turn on code to handle # LINENUM,
3569: and move initializations past the label `old_linenum'.
3570:
3571: * c-decl.c (grokdeclarator): If traditional, make bitfields unsigned.
3572: (finish_struct): Don't do that here.
3573:
3574: * fixincludes (CTRL): Don't put quotes around a quote.
3575:
3576: * stddef.h (size_t): Also inhibit if _SIZE_T_.
3577:
3578: Mon Oct 15 13:15:30 1990 Richard Stallman (rms at mole.ai.mit.edu)
3579:
3580: * c-decl.c (grokdeclarator): Make flag_signed_bitfields work
3581: for int and for typedefs.
3582:
3583: Sun Oct 14 21:28:32 1990 Richard Stallman (rms at mole.ai.mit.edu)
3584:
3585: * flow.c (life_analysis): No hard regs for any pseudos live at setjmp.
3586:
3587: * c-decl.c (duplicate_decls): Don't suppress warning for fn defn
3588: after implicit declaration, if fn has already been defined.
3589:
3590: Fri Oct 12 15:54:11 1990 Richard Stallman (rms at mole.ai.mit.edu)
3591:
3592: * c-parse.y (xdecls): Allow ellipsis after parm decls.
3593: Call c_mark_varargs.
3594: * c-decl.c (start_function): Clear c_function_varargs.
3595: (c_mark_varargs): New function. Set it.
3596: (store_parm_decls): Maybe call mark_varargs.
3597: * function.c (init_function_start): Clear current_function_varargs.
3598: (mark_varargs): New function. Set it.
3599:
3600: Thu Oct 11 13:15:36 1990 Richard Stallman (rms at mole.ai.mit.edu)
3601:
3602: * genattrtab.c (fancy_abort): New function, as in gen*.c.
3603:
3604: * expr.c (saveregs_value): New variable.
3605: (init_expr, save_expr_status, restore_expr_status):
3606: Init, save, restore the variable.
3607: (expand_builtin): Don't call __builtin_saveregs twice in one function.
3608:
3609: * va-*.h: Rename all structure fields to start with __.
3610: * va-pyr.h: Rename variables also.
3611: (va_start): Delete the unmatched {.
3612: (va_end): Now a nop.
3613:
3614: Wed Oct 10 22:03:20 1990 Richard Stallman (rms at mole.ai.mit.edu)
3615:
3616: * va-sparc.h (__va_ctl): Rename fields to start with __.
3617:
3618: Tue Oct 9 12:55:48 1990 Michael Meissner (meissner at osf.org)
3619:
3620: * Allow configuration to specify size of a wide character.
3621: (WCHAR_TYPE_SIZE): New parameter.
3622: (WCHAR_UNSIGNED): New parameter, says whether type is signed.
3623:
3624: * c-decl.c (WCHAR_TYPE_SIZE): Define if not defined.
3625: (WCHAR_UNSIGNED): Likewise.
3626: (wchar_type_node, signed_wchar_type_node, unsigned_wchar_type_node):
3627: (wchar_array_type_node): New variables.
3628: (init_decl_processing): Init them.
3629: * c-tree.h: Make them extern.
3630:
3631: * c-common.c (WCHAR_TYPE_SIZE, WCHAR_BYTES): Define them.
3632: (combine_strings): Handle them.
3633: * c-parse.y (init_lex, yylex): Likewise.
3634:
3635: * c-typeck.h (digest_init): Use wchar_type_node and
3636: signed_wchar_type_node to get the base type of wide strings, rather
3637: than using int and unsigned.
3638:
3639: Tue Oct 9 14:16:37 1990 Richard Stallman (rms at mole.ai.mit.edu)
3640:
3641: * expmed.c (extract_bit_field): Typo; section for extv used extzv.
3642:
3643: * c-typeck.c (digest_init): Error if union has no name field.
3644: (process_init_constructor): For union, use first named field.
3645:
3646: * flow.c (propagate_block): Include NOTE at end of block in scan.
3647:
3648: * fixincludes: Fix missing semicolon in rstat.h.
3649:
3650: * cccp.c (main): Record the option names used for assertions.
3651: Call make_assertion properly.
3652:
3653: Tue Oct 9 06:18:38 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3654:
3655: * cse.c (fold_rtx): Call find_best_addr before seeing if we know
3656: what is located at that address.
3657: Don't try to return the contents of an ADDR_DIFF_VEC table; we have
3658: no simple way of representing it.
3659: (cse_insn): Detect SRC == DEST even when DEST is not the canonicalized
3660: form of the value represented by SRC.
3661:
3662: * loop.c (scan_loop): Don't set THRESHOLD until LOOP_HAS_CALL
3663: has been set.
3664: (struct induction): Add field MEM_MODE.
3665: (find_mem_givs, combine_givs_p): Record mode used to access memory
3666: when making DEST_ADDR giv and use it to test validity of
3667: derived address.
3668:
3669: * jump.c (delete_jump): No longer static.
3670: (invert_jump): Allow changing RETURNs to branches and vice versa.
3671: Now returns success/failure indication like redirect_jump.
3672: * rtl.h (delete_jump): Define.
3673:
3674: * calls.c (store_one_arg): Don't expand a `partial' arg into
3675: arg->stack and don't set arg->value to arg->stack_slot for
3676: such args.
3677: Clean up by breaking out common code.
3678:
3679: Mon Oct 8 15:09:31 1990 Richard Stallman (rms at mole.ai.mit.edu)
3680:
3681: * loop.c (can_eliminate_biv_p): Insist that mult_val be positive.
3682:
3683: * Makefile.in (insn-*): Remove semicolon from these rules.
3684: (INSTALL_PROGRAM, INSTALL_FILE): New variables.
3685: (install-*): Use those variables.
3686: (mandir): Default based on manext.
3687:
3688: Mon Oct 8 10:57:14 1990 Michael Tiemann (tiemann at cygnus.com)
3689:
3690: * stmt.c (expand_catch_default): Return 1 if EXCEPT_STACK is
3691: nonzero.
3692:
3693: * c-decl.c (finish_enum): Argument to floor_log2 in
3694: calculation of negprecision was not negated.
3695:
3696: Mon Oct 8 06:50:15 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3697:
3698: * rtl.h (INSN_ANNULLED_BRANCH_P, INSN_FROM_TARGET_P): New fields.
3699:
3700: Sun Oct 7 23:33:24 1990 Richard Stallman (rms at mole.ai.mit.edu)
3701:
3702: * tm-i386v.h (STARTFILE_SPEC): Handle -p here.
3703: (LIB_SPEC): Not here.
3704:
3705: Thu Oct 4 05:06:02 1990 Michael Tiemann (tiemann at cygnus.com)
3706:
3707: * gcc.c (default_compilers): Define __OPTIMIZE__ for %{O*}, not just
3708: %{O}. This permits the use of -O2, -O3, etc., with predictable
3709: results.
3710:
3711: * expr.c (expand_expr): Do not build new cleanups for
3712: TARGET_EXPRs. Their cleanups are now handled entirely by the
3713: language-specific code that causes them to be generated.
3714:
3715: * function.c ({push,pop}_temp_slots): Do not change
3716: temp_slot_level if within a sequence. GNU C++ must be able to
3717: emit a sequence it is building anywhere at the level the sequence
3718: was initiated. If the level is changed when building a sequence,
3719: temporaries could be unwittingly shared.
3720:
3721: * cplus-tree.def: change print strings for NEW_EXPR and
3722: CPLUS_CATCH_DECL.
3723:
3724: * cplus-dem.c (do_type): Support `long long' types.
3725:
3726: * cplus-decl.c (finish_file): No longer try to emit _init,_fini
3727: records for GNU C++. This was supposed to help the SunOS dynamic
3728: linker link C++ code, but it turned out not to work.
3729:
3730: * cplus-decl.c ({start,finish}_function): Don't emit an extra
3731: binding contour if not in a constructor or destructor. It is not
3732: needed, and saves writing out unneeded debugging info.
3733:
3734: * cplus-class.c (build_method_call): Conditionalize handling of
3735: wrappers and operator->(); these are now only compiled if ESKIT is
3736: #defined.
3737:
3738: * cplus-decl.c (define_label): Updated to treat labels in the same
3739: new fashion that c-decl.c treats them.
3740:
3741: * cplus-*.c: C++ front-end files now support a generic
3742: class-browser interface. It is up to some adventurous hacker to
3743: implement the class browser.
3744:
3745: * cplus-*.c: C++ front-end files no longer #include rtl.h.
3746:
3747: Sun Sep 30 15:53:02 1990 Richard Stallman (rms at mole.ai.mit.edu)
3748:
3749: * cccp.c (make_assertion): New function.
3750: (main): Handle -A by calling make_assertion.
3751: -A- gets rid of predefined macros and those specified earlier.
3752:
3753: * print-tree.c (print_node_brief): Declare i for printing REAL_CST.
3754:
3755: * recog.c (immediate_operand, nonmemory_operand): Don't accept
3756: integer constants if caller wants a floating mode.
3757:
3758: Sat Sep 29 18:40:08 1990 Richard Stallman (rms at mole.ai.mit.edu)
3759:
3760: * reload1.c (emit_reload_insns): Handle preserving death info
3761: with find_equiv_reg.
3762:
3763: * reload.c (find_equiv_reg): Handle INSN_CLOBBERS_REGNO_P.
3764:
3765: * fixincludes: For link pointing outside /usr/include,
3766: use $x rather than $dest.
3767:
3768: * optabs.c (expand_float, expand_fix): Use dconst1, not 1.0.
3769:
3770: Sat Sep 29 06:38:38 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3771:
3772: * emit-rtl.c (try_split): Use emit_insn_after and delete_insn to
3773: ensure that the correct insn chain is maintained in the presence of
3774: SEQUENCEs; be careful if the insn being split has a following BARRIER.
3775: * jump.c (delete_insn): Correctly update insn chain when deleting
3776: insn following or preceeding a SEQUENCE.
3777:
3778: Fri Sep 28 16:07:42 1990 Richard Stallman (rms at mole.ai.mit.edu)
3779:
3780: * c-parse.y (yylex): Use REAL_VALUE_TRUNCATE for `f' suffix.
3781:
3782: * fold-const.c (const_binop): Don't initialize REAL_VALUE_TYPE decls.
3783:
3784: Thu Sep 27 14:06:37 1990 Richard Stallman (rms at mole.ai.mit.edu)
3785:
3786: * expr.c (expand_expr): Set MEM_VOLATILE_P from TREE_THIS_VOLATILE.
3787:
3788: Wed Sep 26 00:21:23 1990 Richard Stallman (rms at mole.ai.mit.edu)
3789:
3790: * tm-mips-news.h: New file.
3791:
3792: * out-i860.c (output_size_for_block_move): Don't decrement.
3793: (output_block_move): Decrement initial storing address instead.
3794:
3795: * c-parse.y (yylex): Always try unsigned int if `u' is written.
3796:
3797: * c-typeck.c (build_unary_op): Don't let &* make an lvalue.
3798:
3799: * c-parse.y (initlist): Use [N] rather than case N: for array index.
3800:
3801: * tm-seq386.h (LINK_SPEC): Define it.
3802:
3803: * c-parse.y (yylex): Don't try signed int for nondecimal constant
3804: if -traditional. Improve messages for -Wtraditional.
3805:
3806: * stor-layout.c (layout_record): Avoid using DECL_SIZE_UNIT.
3807:
3808: * jump.c (jump_optimize): Scan all insns for label refs.
3809: (mark_jump_label): Quickly ignore uninteresting rtl types.
3810: * rtl.def (INSN, CALL_INSN): Add a slot for JUMP_LABEL.
3811:
3812: * jump.c (jump_optimize): Try combining stack adjusts with pushes.
3813:
3814: Mon Sep 24 07:31:40 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3815:
3816: * stmt.c (expand_computed_goto): Emit barrier after jump.
3817:
3818: * expr.c (case LABEL_DECL): Return a MEM, so we can take its
3819: address; correctly form LABEL_REF.
3820:
3821: Sun Sep 23 22:54:38 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3822:
3823: * loop.c (struct movable): Delete field SET_EQUAL; new field MOVE_INSN.
3824: (scan_loop): Only use REG_EQUAL note under very restricted
3825: cirsumstances. Set MOVE_INSN field in movables when appropriate.
3826: (combine_movables): Simplify matching test now that we only have one
3827: source field.
3828: (move_movables): Handle MOVE_INSN movables by emitting a new move
3829: insn in front of the loop.
3830: Correct typo in checking for CALL_INSN.
3831: Don't try to make a REG_EQUAL note.
3832: (count_loop_regs_set): Remove extraneous assignment to MAY_NOT_MOVE.
3833:
3834: Sun Sep 23 14:59:21 1990 Richard Stallman (rms at mole.ai.mit.edu)
3835:
3836: * cccp.c (S_ISREG): Define it unless overridden.
3837: (main, finclude): Use that.
3838:
3839: * reload1.c (reload): If insn after a function call uses the
3840: function value, and that reg is spilled, and the insn might
3841: use it for reloading, add an extra need.
3842: (reload_as_need): Detect such insns for new arg to choose_reload_regs.
3843: (choose_reload_regs): In that case, don't choose function value reg.
3844:
3845: * tm-convex1.h, tm-convex2.h (CPP_SPEC): Define __NO_INLINE_MATH.
3846:
3847: Sun Sep 23 07:52:32 1990 Michael Tiemann (tiemann at cygnus.com)
3848:
3849: * version.c (version_string): Bumped to 1.90.02.
3850:
3851: * final.c (leaf_function): Variable now non-static.
3852: * final.c (only_leaf_regs_used): Function now non-static.
3853: * final.c (leaf_function_p): Move initialization of
3854: `leaf_function' from here...
3855: * toplev.c (compile_file): ...to here. We want to know the
3856: value of `leaf_function' when we perform code reorginization.
3857: * final.c (leaf_function_p): If profiling arcs, we cannot have
3858: a leaf function. Also, we have to look at insns in
3859: `epilogue_delay_list' to know that all our constraints are
3860: satisfied.
3861: * final.c (only_leaf_regs_used): Have to look in
3862: `epilogue_delay_list' to know that all our constraints are
3863: satisfied.
3864:
3865: * toplev.c (warning_with_file_and_line,warning): Declare third
3866: argument V3 for warnings that require 3 `%' expressions in S.
3867: * toplev.c (strip_off_ending): New helper function that removes
3868: a GCC-recognized filename extension. Call this function in
3869: GCC instead of expanding it inline in C code everywhere.
3870:
3871: * sched.c (schedule_block): The last basic block does not have
3872: no live registers. Also, check that we don't copy from an
3873: entry in `basic_block_live_at_start' that does not exist.
3874: * sched.c (update_reg_first_use): When splitting insns, the
3875: insn that is in REG_FIRST_USE might become a NOTE, and a new
3876: insn become the insn that should be considered the first use.
3877: `update_first_use' keeps REG_FIRST_USE up to date.
3878: * sched.c (update_links): Call note_stores with
3879: `update_first_use' when an insn splits.
3880:
3881: Sun Sep 23 00:05:49 1990 Richard Stallman (rms at mole.ai.mit.edu)
3882:
3883: * c-decl.c (grokdeclarator): Put var array bound in save_expr.
3884:
3885: Sat Sep 22 14:01:00 1990 Richard Stallman (rms at mole.ai.mit.edu)
3886:
3887: * tree.c (build_index_type): Don't hash variable-bound type.
3888:
3889: * c-decl.c (start_decl): Error here if var-size object initialized.
3890: (grokdeclarator, finish_struct): Record types & decls
3891: with array sizes not written as constants.
3892: * c-tree.h (C_TYPE_VARIABLE_SIZE, C_DECL_VARIABLE_SIZE): New macros.
3893:
3894: * tm-aix386.h (LIB_SPEC): Different library name for -p. Always -lc.
3895: (LINK_SPEC): Don't pass -lg or -g.
3896: (CPP_PREDEFINES): Define _I386 and _AIX. Don't define unix.
3897: (SDB_DEBUGGING_INFO): Define it.
3898: (DBX_DEBUGGING_INFO): Undefine it.
3899: (ASM_FILE_START): Output .noopt if not optimizing.
3900: (PCC_BITFIELD_TYPE_MATTERS): Define it.
3901: (FUNCTION_PROFILER): Add definition.
3902:
3903: Fri Sep 21 16:26:51 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3904:
3905: * function.c (current_function_epilogue_list): Define this here.
3906: * reorg.c: Not here.
3907:
3908: Fri Sep 21 13:11:11 1990 Richard Stallman (rms at mole.ai.mit.edu)
3909:
3910: * varasm.c (assemble_external_libcall): Frob SYMBOL_REF_USED here.
3911:
3912: Thu Sep 20 15:29:44 1990 Richard Stallman (rms at mole.ai.mit.edu)
3913:
3914: * expr.h (struct optab): Field libfunc, an rtx, replaces lib_call.
3915: * rtl.h (SYMBOL_REF_USED): New macro.
3916: * optabs.c (init_optabs): Initialize that field properly.
3917: Also initialize new variables *_libfunc.
3918: (various functions): Use those vars; use libfunc field.
3919: * expr.c (convert_move, emit_block_move, clear_storage): Use the vars.
3920: (emit_push_insn, expand_assignment): Likewise.
3921:
3922: Thu Sep 20 13:51:18 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3923:
3924: * out-a29k.c (current_function_epilogue_delay_slot): Renamed from
3925: epilogue_delay_slot.
3926:
3927: * romp.md (movdi): Fix missing short/long qualifier on memory ref.
3928: (SFmode/DFmode move patterns): Add explicit alternatives for
3929: storing and loading general registers from memory; also add
3930: DEFINE_SPLITs for these cases for DFmode.
3931: (negsf2,negdf2): Don't use XOR if an operand is a hard FP register.
3932:
3933: * tm-romp.h (FIXED_REGISTERS, CALL_USED_REGISTERS): Use correct
3934: register numbers for FP registers.
3935:
3936: * output.h (current_function_epilogue_delay_list): New var.
3937: * function.c: Include output.h and initialize new var above.
3938: * Makefile.in (function.o): Now includes output.h.
3939: * reorg.c (epilogue_delay_list): Renamed to
3940: current_function_epilogue_delay_list.
3941:
3942: * final.c (final_scan_insn): Don't delete no-op insn if in delay slot
3943: or if we have already pre-scanned.
3944:
3945: * genconfig.c (max_insns_per_split): Rename from
3946: max_insns_per_split_flag and default to 1 instead of 0.
3947:
3948: * genattrtab.c (n_comma_elts): Return zero for null string.
3949:
3950: * sdbout.c (MIN,MAX): Add to here; required by recent changes.
3951:
3952: * expr.c (safe_from_p): A MEM rtx is not safe from an INDIRECT_REF.
3953:
3954: * c-parse.y (ridpointers): Move definition in front of first use.
3955:
3956: * reorg.c (mark_referenced_resources): Allow for CODE_LABELs between a
3957: CALL_INSN and USE insns preceeding it.
3958: (mark_set_resources): Likewise, for following CLOBBERs.
3959:
3960: Wed Sep 19 17:45:49 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3961:
3962: * assert.h (printf): Don't define; should be in stdio.h.
3963:
3964: * rtl.h (PUT_REG_NOTE_KIND): New macro.
3965: * sched.c (attach_deaths): Use it.
3966:
3967: * reorg.c (mark_referenced_resources): If we put insns to load
3968: parameters into the delay slot of a CALL, ignore the USE insns
3969: for those parameters.
3970:
3971: * function.c (fixup_var_refs_1): Don't call fixup_memory_subreg unless
3972: its would-be operand is a SUBREG.
3973:
3974: Wed Sep 19 00:26:59 1990 Richard Stallman (rms at mole.ai.mit.edu)
3975:
3976: * print-tree.c (print_node): Indent before printing RTL.
3977:
3978: * Makefile.in (protoize.o, unprotoize.o): Look for SYSCALLS.c.X
3979: in libsubdir.
3980:
3981: Tue Sep 18 21:55:01 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
3982:
3983: * cse.c (fold_rtx): For MEM with constant address, split the
3984: address into possible base and offset; ensure constant pool
3985: value is same mode as our reference unless we are getting a
3986: word of a DImode CONST_INT.
3987: Treat SYMBOL_REF and LABEL_REF as constants.
3988: If we are getting a word at a constant offset from a jump table,
3989: replace with the contents of that jump table entry.
3990: (cse_insn): When folding jump to variable location (e.g., tablejump),
3991: LABEL_REF is the cheapest of all, since the branch would be simple.
3992: Special-case changing variable branch to normal unconditional
3993: because the RTL may be different (e.g., the variable branch may
3994: include a USE).
3995:
3996: Tue Sep 18 18:33:19 1990 Richard Stallman (rms at mole.ai.mit.edu)
3997:
3998: * toplev.c (count_error): Handle warnings_are_errors.
3999: (W_options): Handle -Werror.
4000:
4001: Mon Sep 17 00:02:12 1990 Richard Stallman (rms at mole.ai.mit.edu)
4002:
4003: * c-decl.c (lookup_label): Use void as type of label.
4004: * stmt.c (label_rtx): No longer static.
4005: * expr.c (expand_expr): Handle LABEL_DECL.
4006:
4007: Sun Sep 16 16:27:29 1990 Richard Stallman (rms at mole.ai.mit.edu)
4008:
4009: * expr.c (expand_builtin): Error for __builtin_nextarg
4010: if function definition doesn't have `...'.
4011:
4012: * expmed.c (store_bit_field): Adjust BITPOS to UNIT all at once.
4013: for insv, use mode of operand 3 instead of SImode. Define MAXMODE.
4014: Adjust XBITPOS along with mode of XOP0.
4015: (extract_bit_field): Adjust XBITPOS along with mode of XOP0.
4016: for extv and extzv, use mode of operand 3 thoroughly instead of SImode.
4017:
4018: * sdbout.c (CHAR_TYPE_SIZE,...): Default definitions of these macros.
4019: (plain_type_1): Use those macros to distinguish int and floating types.
4020:
4021: * toplev.c (rest_of_decl_compilation): Output TYPE_DECL here for sdb
4022: only if top_level.
4023:
4024: * c-parse.y (unary): Don't forget to look up the label.
4025:
4026: * c-typeck.c (build_conditional_expr): Don't skip arg promotion.
4027:
4028: Sun Sep 16 14:54:03 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4029:
4030: * combine.c (try_combine): If we don't recognize the combined insn,
4031: try it without any CLOBBERs.
4032:
4033: * final.c (final_scan_insn): Prevent CC tracking from thinking
4034: that the CC was set by an insn in the delay slot of a CALL_INSN.
4035:
4036: * expmed.c (init_expmed, expand_divmod): Allow machine to have
4037: low cost specified for divides by powers of two if it can do it by
4038: a method that if cheaper than the normal shift/branch/adjust mechanism.
4039:
4040: * cse.c (fold_rtx): When putting constant last, ensure that the
4041: resulting insn is valid.
4042:
4043: * objc-actions (finish_objc): Remove dup defn of gen_declaration_file.
4044:
4045: * objc-parse.y (ridpointers, token_buffer): Define before use.
4046:
4047: * reload1.c (scan_paradoxical_subregs): Declare correctly.
4048:
4049: * tm-romp.h (ENCODE_SEGMENT_INFO): Use INTEGRATED bit to mark
4050: SYMBOL_REFs that are addresses of functions (really their data blocks).
4051: (LEGITIMATE_CONSTANT_P): Data block addresses of functions are not
4052: valid operands.
4053: * out-romp.c (symbolic_operand): Likewise.
4054: * romp.md (call*): emit_move_insn will now do force_const_mem
4055: so it needn't be done explicitly.
4056:
4057: * out-romp.c (output_fpop): Work around yet another RT fp bug;
4058: cannot merge output and first operand for SFmode if general reg.
4059:
4060: * romp.md: Add new pattern to match combination of copy and test.
4061: Use nilo instruction to set CC.
4062:
4063: Fri Sep 14 07:07:01 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4064:
4065: * c-tree.h: Define all *_type_node trees defined in c-decl.c, in the
4066: same order as defined there.
4067:
4068: Fri Sep 14 08:39:17 1990 Michael Tiemann (tiemann at cygnus.com)
4069:
4070: * cplus-typeck.c (build_c_cast): Convert READONLY_DECLs to make up
4071: for the fact that we do not call `default_conversion' anymore.
4072:
4073: * function.c (instantiate_virtual_regs): If the function is inline,
4074: we don't need to worry about making valid rtl, but we do need to
4075: worry about instantiating all virtual registers. Otherwise we must
4076: make the rtl valid, and we have other opportunities to eliminate the
4077: virtual registers during the compilation.
4078:
4079: Thu Sep 13 16:00:05 1990 Richard Stallman (rms at mole.ai.mit.edu)
4080:
4081: * reload.c (MATCHES): Check for different rtx's with same reg number.
4082:
4083: * fixincludes: Discard `.' from value of `files'.
4084:
4085: * c-parse.y (unary_expr): Use unary && to get address of label.
4086: (stmt): Handle `goto *EXPRESSION;'.
4087: * stmt.c (expand_computed_goto): New function.
4088:
4089: * gstdarg.h: New name for stdarg.h.
4090: * Makefile (install-headers): Rename gstdarg.h while installing it.
4091:
4092: * sdbout.c (PUT_SDB_LAST_DIM): Get rid of SDB_DELIM.
4093: (plain_type): Output accumulated array dims and size.
4094: (plain_type_1): Eliminate arg NOSIZE. Save up dims and size.
4095: Call self rather than plain_type for pointers and functions.
4096: (sdbout_array_type, sdbout_array_depth): Functions deleted.
4097:
4098: Thu Sep 13 16:12:15 1990 Michael Tiemann (tiemann at cygnus.com)
4099:
4100: * cplus-class.c (build_method_call): Fix typo in deciding whether to
4101: do hairy or trivial pointer conversions on `this'.
4102:
4103: * cplus-tree.c (layout_vbasetypes): Don't double-count space taken
4104: up by virtual baseclasses.
4105:
4106: Wed Sep 12 18:14:19 1990 Richard Stallman (rms at mole.ai.mit.edu)
4107:
4108: * tm-m68k.h: Use asm_fprintf widely.
4109: (REG_PREFIX, IMMEDIATE_PREFIX, LOCAL_LABEL_PREFIX, USER_LABEL_PREFIX):
4110: New macros.
4111:
4112: * final.c (asm_fprintf): New function.
4113:
4114: Wed Sep 12 06:07:50 1990 Michael Tiemann (tiemann at cygnus.com)
4115:
4116: * cplus-dbxout.c (dbxout_type): Output basetype size and offset info
4117: in bits, not bytes.
4118:
4119: * cplus-decl.c (finish_{decl,function}): Set CLASSTYPE_ASM_WRITTEN
4120: bit of types used by non-extern VAR_DECLs. Set it also for types of
4121: PARM_DECLs and return types of functions defined in the file being
4122: compiled.
4123:
4124: Tue Sep 11 13:21:40 1990 Richard Stallman (rms at mole.ai.mit.edu)
4125:
4126: * sdbout.c (plain_type_1): New argument NOSIZE. Inhibits size output.
4127: (sdbout_array_type): Call plain_type_1 directly; set NOSIZE.
4128:
4129: * sdbout.c (sdbout_array_type): New argument DEPTH.
4130: Don't output more than SDB_MAX_DIM dimensions.
4131: (sdbout_array_depth): New function.
4132: (plain_type_1): Start DEPTH by calling sdbout_array_depth.
4133:
4134: * gnulib2.c (_bb_init_func): Library member now named _bb.
4135:
4136: * tree.h: Add comments.
4137:
4138: Mon Sep 10 17:20:06 1990 Richard Stallman (rms at mole.ai.mit.edu)
4139:
4140: * Makefile.in (install): Fix typo.
4141:
4142: * cccp.c (macarg1): With -traditional, backslash quotes chars.
4143:
4144: Mon Sep 10 16:37:01 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4145:
4146: * jump.c (jump_optimize): Don't swap THEN and ELSE parts during jumps
4147: runs after reload.
4148:
4149: Mon Sep 10 13:07:39 1990 Richard Stallman (rms at mole.ai.mit.edu)
4150:
4151: * cccp.c (collect_expansion): Don't actually substitutee into a
4152: string if ANSI; just consider warning.
4153:
4154: * gnulib2.c (div_qrrnd for i386): Fix typo. Rename some args.
4155:
4156: * sdbout.c (sdbout_array_type): New argument DEPTH.
4157: Don't output more than SDB_MAX_DIM dimensions.
4158: (plain_type_1): Start DEPTH at 1.
4159:
4160: Sun Sep 9 22:02:24 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4161:
4162: * out-a29k.c (gen_reg_operand): Exclude SUBREG of a special
4163: register.
4164:
4165: * cse.c: (fold_rtx): Get equivalent for register before seeing if
4166: memory reference is to constant pool.
4167: (cse_ins): Only call force_const_mem if we actually try to use
4168: the constant (i.e., we haven't found anything cheaper).
4169:
4170: Sun Sep 9 21:49:18 1990 Richard Stallman (rms at mole.ai.mit.edu)
4171:
4172: * ..._BIG_ENDIAN: Now expect definition to be 0 or 1.
4173: All refs and defs changed.
4174:
4175: * tm-mips.h (CPP_SPEC): Error for -EL (for -EB, if DECSTATION).
4176:
4177: * sdbout.c (sdbout_one_type): Set TREE_ASM_BEING_WRITTEN before
4178: recursion, and TREE_ASM_WRITTEN after.
4179:
4180: Sat Sep 8 16:47:27 1990 Richard Stallman (rms at mole.ai.mit.edu)
4181:
4182: * hard-params.c (main): Don't try to malloc all memory.
4183:
4184: Sat Sep 8 16:38:53 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4185:
4186: * reload1.c (reload): Set reg_equiv_constant if the equivalence
4187: is any constant, not just a legitimate constant operand.
4188:
4189: * final.c (get_attr_length, shorten_branches, final_scan_insn):
4190: If JUMP_TABLES_IN_TEXT_SECTION is defined, don't put jump tables
4191: in readonly data section, even if it exists.
4192:
4193: Sat Sep 8 14:07:05 1990 Richard Stallman (rms at mole.ai.mit.edu)
4194:
4195: * Makefile.in (bootstrap*): Pass null ALLOCA definition to recursive
4196: makes when compiling with GCC since it never needs alloca.c.
4197:
4198: * c-typeck.c (build_binary_op_nodefault): Warn for signed < unsigned.
4199: Controlled by -W.
4200:
4201: * tm-i386v4.h: New file.
4202:
4203: Fri Sep 7 13:10:24 1990 Richard Stallman (rms at mole.ai.mit.edu)
4204:
4205: * cccp.c (STDC_VALUE): New macro, defaulting to 1.
4206: (intialize_builtins): Use that.
4207:
4208: * m68k.md (movqi): `st' does not set cc's.
4209:
4210: Fri Sep 7 07:49:23 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4211:
4212: * genemit.c (gen_expand): Fix test for no C code.
4213: If no C code, no MATCH_DUPs, and only one insn to write, handle
4214: like DEFINE_INSN and return that insn rather than making a sequence.
4215:
4216: * emit-rtl.c (add_insn_after): If previous or next insn is a
4217: SEQUENCE, update the NEXT_INSN in the last insn in the SEQUENCE or
4218: PREV_INSN of the first, as appropriate.
4219: (emit_insn_before, emit_jump_insn_before, emit_note_before):
4220: Call add_insn_after.
4221:
4222: * stmt.c (check_for_full_enumeration_handling): If a switch whose index
4223: is an enumerated type contains labels for every enumeration value,
4224: make the label for the last value the default label since such a
4225: switch can never fall through.
4226:
4227: * genattr.c (fatal): Declare first arg correctly.
4228:
4229: * combine.c (try_combine): No longer check REG_FUNCTION_VALUE_P;
4230: its value shouldn't matter once RTL generation is complete.
4231: (subst): If NOT is present as an operand in commutative operation,
4232: put it last to reduce the number of required patterns.
4233:
4234: * out-romp.c (output_fpops): Align to word boundary before writing
4235: any floating-point blocks.
4236:
4237: * function.c (instantiate_virtual_regs_1): Fix typo in previous change.
4238: When a MEM must be copied, use copy_rtx; the PLUS may also be shared.
4239:
4240: Thu Sep 6 15:19:42 1990 Richard Stallman (rms at mole.ai.mit.edu)
4241:
4242: * gcc.c (do_spec_1): Don't add __ to -D if __ already present.
4243:
4244: * c-typeck.c (convert_for_assignment):
4245: Better warning for FCN * vs. void *
4246: Specific warning for char * vs. unsigned char *.
4247:
4248: Thu Sep 6 14:52:08 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4249:
4250: * reorg.c (find_basic_block): Return -1, not 0, if we can't find
4251: the basic block.
4252: (mark_target_live_regs): Clear PENDING_DEAD_REGS unconditionally.
4253: (relax_delay_slots): Don't call optimize_skip for unconditional jump.
4254: Only try to remove jump if it is a simple conditional or
4255: unconditional jump (but not a tablejump or similar such).
4256:
4257: * cse.c (invalidate, refers_to_mem_p, cse_rtx_addr_varies_p):
4258: Consider (plus (reg) (const_int)) to be a fixed address if REG
4259: is constant; old code just handled REG.
4260:
4261: * genrecog.c (enum routine_type): Use to distinguish two types of
4262: routines that we write: recog and split_insns.
4263: (make_split_sequence): Write out extern for gen_split_ function.
4264: (break_out_subroutines, write_subroutine, write_tree, main):
4265: Use new enum routine_type instead of passing "split" or "recog".
4266: (write_subroutine): Write correct type for splitting functions and
4267: return 0, not -1.
4268: (main): Write includes before declarations of gen_split_ functions
4269: since "rtx" is needed for them.
4270: * rtl.h (try_split, split_insns): Added definitions.
4271:
4272: Wed Sep 5 16:20:07 1990 Richard Stallman (rms at mole.ai.mit.edu)
4273:
4274: * Makefile.in (includes): Use proper directory.
4275:
4276: Tue Sep 4 13:59:31 1990 Richard Stallman (rms at mole.ai.mit.edu)
4277:
4278: * c-decl.c (store_parm_decls): Let extra_warnings control
4279: warnings about parms not declared.
4280:
4281: * flow.c (life_analysis): Move code to detect stack-adjust insns.
4282: It was unreachable.
4283:
4284: * gnulib.c, gnulib2.c (abort): #undef in case config.h defines it.
4285:
4286: Mon Sep 3 17:50:16 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4287:
4288: * calls.c (expand_call): If SETUP_INCOMIMG_VARARGS is defined, pass
4289: unnamed args in registers.
4290: * function.c (assign_parms): Call SETUP_INCOMING_VARARGS for
4291: stdargs as well as varargs; ensure we only call it once.
4292:
4293: * function.c (instantiate_virtual_regs_1): Don't assume all memory
4294: addresses are valid for all insns.
4295:
4296: Sun Sep 2 22:17:40 1990 Richard Stallman (rms at mole.ai.mit.edu)
4297:
4298: * expr.c (emit_library_call): Push all stack args, then load regs.
4299:
4300: * c-decl.c (c_build_type_variant): For an ARRAY_TYPE,
4301: put the qualifier into the array as well as the element.
4302: (grokdeclarator): When a field or variable is supposed to be
4303: a const or volatile array, make the array elements const or
4304: volatile, but also make the field or variable so.
4305:
4306: * c-decl.c (grokdeclarator): Turn off the warning for const or volatile
4307: function type when making an array. It was useless.
4308:
4309: Fri Aug 31 16:26:40 1990 Richard Stallman (rms at mole.ai.mit.edu)
4310:
4311: * c-common.c (truthvalue_conversion): Let the
4312: language-specific code decide how to convert EXPR
4313: if it is not one of the special forms we recognize.
4314:
4315: Fri Aug 31 15:08:19 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4316:
4317: * gcc.c (execute): Use I instead of undefined var J if DEBUG defined.
4318:
4319: Fri Aug 31 14:37:36 1990 Richard Stallman (rms at mole.ai.mit.edu)
4320:
4321: * sdbout.c (sdbout_begin_block): Delete excess arg to sdbout_block.
4322:
4323: Thu Aug 30 21:31:55 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4324:
4325: * expmed.c (extract_bit_field): Fix typos in computations of UNIT.
4326:
4327: Wed Aug 29 12:33:33 1990 Richard Stallman (rms at mole.ai.mit.edu)
4328:
4329: * sdbout.c (sdbout_reg_parms): Don't advance parm twice.
4330:
4331: Tue Aug 28 22:49:41 1990 Richard Stallman (rms at mole.ai.mit.edu)
4332:
4333: * cccp.c (delete_newlines): New function.
4334: (macroexpand): Remove newlines from args used more than once.
4335:
4336: Tue Aug 28 22:16:50 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4337:
4338: * Makefile.in (sched.o): Add to list of files to compile.
4339:
4340: * c-parse.y (position_after_white_space): Declare with correct type.
4341:
4342: * fold-const.c (optimize_bit_field_compare): Fix typo.
4343:
4344: * reorg.c (split_insns): No longer need extern for this here.
4345:
4346: * toplev.c (sched_dump_file): Define.
4347: (compile_file): Initialize and print sched_time and sched2_time.
4348:
4349: * local-alloc.c (block_alloc): Fix typo in allocation of insn_map.
4350:
4351: * cse.c (cse_insn): Try related value in case where CONST is seen
4352: first and SYMBOL_REF later.
4353:
4354: Tue Aug 28 16:26:50 1990 Richard Stallman (rms at mole.ai.mit.edu)
4355:
4356: * cccp.c (main): Don't modify or validate arg of -D here.
4357: (make_definition): Do it all here.
4358:
4359: * function.c (assign_parms): Reenable `register' for parms.
4360:
4361: Tue Aug 28 07:12:19 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4362:
4363: * tm-a29k.h (CONST_COSTS): All CONST_INTs are cost zero; adjust
4364: SYMBOL_REF and CONST_DOUBLE costs to reflect their actual cost.
4365:
4366: * expr.c (expand_expr): Don't suppress EXPAND_SUM here if not Pmode.
4367: (expand_expr, case *_DECL): Return constant address if
4368: EXPAND_SUM or EXPAND_INTO_STACK in addition to EXPAND_CONST_ADDRESS;
4369: all of these cases will later call memory_address.
4370: (expand_expr, case COMPONENT_REF): Always make recursive call with
4371: EXPAND_SUM.
4372: (expand_expr, case PLUS_EXPR): Try to form constant if X + CONST and
4373: mode is Pmode without EXPAND_SUM; if not EXPAND_SUM, use force_operand.
4374: Check for MODE != Pmode with EXPAND_SUM here.
4375: (expand_expr, case MINUS_EXPR): Always process X - CONST_INT as
4376: X + (-CONST_INT)).
4377:
4378: Sun Aug 26 23:10:10 1990 Richard Stallman (rms at mole.ai.mit.edu)
4379:
4380: * c-decl.c (c_decode_option): Handle -funsigned-bitfields.
4381: (grokdeclarator): Do the real work.
4382: (grokfield): Pass either FIELD or BITFIELD to grokdeclarator.
4383:
4384: * tm-att386.h (asm_output_common): Use SIZE, not ROUNDED.
4385:
4386: Sat Aug 25 17:17:27 1990 Richard Stallman (rms at mole.ai.mit.edu)
4387:
4388: * c-parse.y (unary_expr): Turn off handling of &...
4389: * c-decl.c (store_parm_decls): Turn off extra dummy parameter.
4390:
4391: * tm-att386.h (EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS): New macros.
4392: (BSS_SECTION_ASM_OP): New macro.
4393: (ASM_OUTPUT_LOCAL): Call bss_section, don't just print .bss.
4394:
4395: * combine.c (subst): Handle shift within mem, as multiplication.
4396:
4397: Sat Aug 25 11:43:09 1990 Michael Tiemann (tiemann at cygnus.com)
4398:
4399: * final.c (alter_cond): Handle CC_INVERTED.
4400:
4401: * conditions.h (CC_INVERTED): New flag indicating that the condition
4402: tested leaves the falgs set opposite to the condition tested. This
4403: is unsafe for IEEE floating point operations, but useful for integer
4404: operations which can combine with condition-code setting operations.
4405:
4406: * c-parse.y (position_after_white_space): New function. Skips
4407: all of the whitespace at the current location in the input
4408: file, taking NEXTCHAR into account. Changed all callers of
4409: `skip_white_space' in grammar to use this function instead.
4410:
4411: * genrecog.c (main): Generate code which is more easily optimized by
4412: GCC's cse. In particular, start each recognizer with the address of
4413: `recog_operands' in a register.
4414:
4415: * reload.c (combine_reloads): Can only combine reloads if the
4416: register we find can hold the entire output reload (i.e., SFmode
4417: register may not be suitable for combining with DFmode register).
4418:
4419: * optabs.c (have_sub2_insn): Fixed typo.
4420: * combine.c (combine_instructions): Fixed typo in comment.
4421:
4422: * function.c (expand_function_end): Emit a barrier after a RETURN
4423: jump.
4424:
4425: * Added diffs for new instruction scheduling code.
4426: * emit-rtl.c (try_split): Moved here from reorg.c and made
4427: public. Both instruction scheduling and delayed branch
4428: filling now use the same code to split insns.
4429: * flags.h: Add new flags FLAG_SCHEDULE_INSNS for instruction
4430: scheduling before register allocation and
4431: FLAG_SCHEDULE_INSNS_AFTER_RELOAD for insn scheduling after
4432: register allocation.
4433: * recog.c (constrain_operands): Recognize pseudo registers as
4434: registers for the purpose of insn constraint matching before
4435: register allocation. Otherwise, the insn scheduler assumes
4436: the operands will be memory, which is usually wrong (and
4437: causes it to build bad schedules).
4438: * sched.c (order_calls): New function. For two CALL_INSNS in
4439: the rtl chain, we set up a constraint that the second
4440: CALL_INSN may not be scheduled to run before the first.
4441: (sched_analyze_*): Three kinds of dependencies (true, anti,
4442: and output) constrain the order in which insns can be
4443: rearranged and still preserve their execution semantics.
4444: We now handle dependencies for pseudo and hard register usage
4445: and for memory usage in these functions.
4446: (launch_links): The ordering of which newly ready insns to
4447: execute is now preserved according to their `priority' in the
4448: insn chain, and no longer on their order in the dependency
4449: list from which they were launched.
4450: (schedule_block): Removed support for trying to schedule insns
4451: taking branch delays into account. Reorg.c should be hacked
4452: to understand which insns to pull into delay slots and which
4453: insns to leave alone.
4454: (schedule_block): (Re-)compute all register life information here.
4455: No longer dependent on flow to keep `basic_block_live_at_end'
4456: allocated.
4457: (schedule_insns): Recompute LABEL->BASIC BLOCK mapping, so we
4458: can compute register life information.
4459: * rtl.c (add_dependence): New function to add and remove insn
4460: dependencies. If an insn (I2) must execute after another
4461: (I1), we add an INSN_LIST containing I1 to I2's LOG_LINKS.
4462: If such an INSN_LIST is already in I2's LOG_LINKS, we don't
4463: add a second.
4464: (remove_dependence): Similar, but removes dependencies. May
4465: not actually be needed.
4466: * toplev.c (compile_file,rest_of_compilation): Added code for
4467: dumping info about insn scheduling.
4468:
4469: Fri Aug 24 17:24:03 1990 Richard Stallman (rms at mole.ai.mit.edu)
4470:
4471: * Implement `aligned (INTEGER)' attribute for real.
4472: * c-parse.y (attrib): Really record info for `aligned' attribute.
4473: Don't warn for any integer alignment.
4474: (attribute_list): Make a list.
4475: (initdcl, notype_initdcl, component_declarator): Handle that info.
4476: * c-common.c (decl_attributes): New function.
4477:
4478: Fri Aug 24 07:12:05 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4479:
4480: * genattrtab.c (insn-config.h): This is really needed after all.
4481: * Makefile.in (genattrab.o): Show dependency on insn-config.h.
4482:
4483: * local-alloc.c (block_alloc): Don't update qty_birth for a
4484: register whose quantity is <= 0.
4485:
4486: * fold-const.c (decode_field_reference): Actually obtain unsigned
4487: type where one is wanted.
4488: (merge_component_references): Correctly test for mutually exclusive
4489: conditions.
4490:
4491: Thu Aug 23 14:56:44 1990 Richard Stallman (rms at mole.ai.mit.edu)
4492:
4493: * c-typeck.c (digest_initializer): No pedantic warning for string
4494: and array of unsigned char.
4495:
4496: * tree.c (get_identifier): Do id_clash_len stuff if length equals that.
4497:
4498: Thu Aug 23 10:30:10 1990 Michael Tiemann (tiemann at cygnus.com)
4499:
4500: * cplus-tree.h (CLASSTYPE_CID): Key off of TYPE_MAIN_VARIANT.
4501:
4502: Thu Aug 23 06:44:33 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4503:
4504: * out-romp.c (romp_pushes_stack): Don't count
4505: current_function_pretend_args_size in size of stack.
4506:
4507: Wed Aug 22 18:00:07 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4508:
4509: * tm-a29k.h, tm-a29kunix.h, xm-a29k.h, a29k.md, out-a29k.c: New files.
4510:
4511: * config.gcc (a29k-unix): New target.
4512:
4513: * calls.c (expand_call): Allow FUNCTION_ARG to return an EXPR_LIST
4514: specifying multiple registers to load.
4515: (store_one_arg): Likewise; also delete handling of fully-in-register
4516: case, which hasn't been handled here for a while.
4517: * expr.c (emit_library_call): Our subset of calling sequence for
4518: library routines does not include multiple registers for an arg.
4519:
4520: Tue Aug 21 17:44:49 1990 Richard Stallman (rms at mole.ai.mit.edu)
4521:
4522: * make-cc1.com: Compile and link version.c.
4523:
4524: * Makefile.in (install-gnulib): Create libg.a if none already.
4525:
4526: * expr.c (convert_move): Handle expand_unop retval not same as target.
4527:
4528: * reload.c (find_reloads): For register letters, don't win if BLK.
4529:
4530: * sdbout.c (sdbout_toplevel_data): Fix error message.
4531:
4532: * protoize.c (open): Prototype deleted.
4533:
4534: * flow.c (mark_set_1, mark_used_regs): Update reg_first_use.
4535: (allocate_for_life_analysis): Allocate and clear it.
4536: * local-alloc.c (block_alloc): Calculate INSN_MAP.
4537: Get first use of each reg from reg_first_use.
4538:
4539: * tm-vms.h (MAYBE_VMS_FUNCTION_PROLOGUE): Distinguish C from C++.
4540: (EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS): Add a const data section.
4541: (ASM_OUTPUT_EXTERNAL): Use that section.
4542: (SELECT_SECTION): Go to that section when appropriate.
4543:
4544: Tue Aug 21 18:26:47 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4545:
4546: * reorg.c (fill_simple_delay_slots): Mark anything referenced by an
4547: insn that will be placed in a delay slot in the epilogue as being
4548: needed at the end of the function.
4549:
4550: * cse.c (constant_pool_entries_found): New static var.
4551: (cse_main): Initialize it.
4552: (use_related_value): Correctly look for registers in hash table.
4553: (fold_rtx): Fold constant pool entries to their constants and
4554: set constant_pool_entries_found.
4555: (cse_insn): If we weren't able to place a constant in an insn
4556: and we have previously seen constant pool entries used, set up
4557: to try the constant pool entry also.
4558:
4559: Mon Aug 20 12:14:27 1990 Richard Stallman (rms at mole.ai.mit.edu)
4560:
4561: * function.c (assign_parms): Set LAST_NAMED for parm before dummy.
4562: See August 9 change in c-parse.y.
4563:
4564: * gcc.c (process_command): Split -oFOO into two arguments.
4565:
4566: * stmt.c (expand_asm_operands): Handle COMPONENT_REF and
4567: ARRAY_REF directly as output operands. Avoids crash if BLKmode.
4568:
4569: * c-parse.y, cplus-parse.y, objc-parse.y: Include stdio before input.h.
4570: * input.h: Declare finput.
4571:
4572: * expr.c (emit_push_insn): Don't adjust for EXTRA separately
4573: if will have to adjust the stack anyway.
4574:
4575: * m68k.md (*sh*si3): On 68000, optimize case of >= 16 bits.
4576:
4577: * varasm.c (decode_rtx_const): Don't dereference a PLUS
4578: subexpression of a CONST twice.
4579:
4580: Sun Aug 19 21:51:51 1990 Richard Stallman (rms at mole.ai.mit.edu)
4581:
4582: * toplev.c (finput): Define here.
4583: * *-parse.y (lineno, finput): Duplicate definitions deleted.
4584:
4585: * global-alloc.c (find_reg): Test best_reg against 0,
4586: not first_pseudo_register.
4587:
4588: Sun Aug 19 17:48:22 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4589:
4590: * explow.c (plus_constant): If adding to constant pool constant,
4591: return a new one.
4592:
4593: * genattrtab.c: Need not include insn-config.h.
4594:
4595: Sun Aug 19 17:23:10 1990 Richard Stallman (rms at mole.ai.mit.edu)
4596:
4597: * tm-hp9k320bsd.h (CPP_SPEC): Def __HAVE_68881__ like __HAVE_FPU__.
4598:
4599: * Makefile.in (USE_ALLOCA): Test was backwards.
4600: (USE_HOST_ALLOCA): Likewise.
4601:
4602: Sun Aug 19 09:58:16 1990 Michael Tiemann (tiemann at cygnus.com)
4603:
4604: * stmt.c: Fixes from 2.0 for fixup_goto incorporated here.
4605:
4606: * cplus-decl2.c (write_vtable_entries): Don't test TREE_EXTERNAL
4607: of DECL_CONTEXT (FN). TREE_EXTERNAL is not meaningful for types.
4608:
4609: Fri Aug 17 22:14:09 1990 Richard Stallman (rms at mole.ai.mit.edu)
4610:
4611: * optabs.c (emit_cmp_insn): Don't abort after floating lib cmp.
4612:
4613: Thu Aug 16 23:16:40 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4614:
4615: * varasm.c (assemble_variable, assemble_static_space): Don't
4616: call data section if -fshared-data. If this section is needed,
4617: it should be entered from elsewhere, and this is believe to be
4618: done in all known cases.
4619: (output_constant_pool): Add support for ASM_OUTPUT_SPECIAL_POOL_ENTRY
4620: which writes certain constant pool entries specially; used for TOC
4621: on RS/6000.
4622: (assemble_external_libcall): New function.
4623: * expr.c (emit_library_call): Call it.
4624:
4625: * reorg.c (mark_target_live_regs): Don't follow around infinite loops.
4626:
4627: * varasm.c (struct rtx_cont): Don't use enums in bit fields if
4628: ONLY_INT_FIELDS is defined.
4629:
4630: * cse.c (remove): Rename to remove_from_table to avoid conflict
4631: with `remove' defined in stdio.h.
4632:
4633: Thu Aug 16 22:44:35 1990 Richard Stallman (rms at mole.ai.mit.edu)
4634:
4635: * stmt.c: fixup_gotos must ignore blocks started after the goto.
4636: (block_start_count): New variable, and slot in some structures.
4637: (expand_function_start): Initialize it.
4638: (expand_start_bindings): Increment it and store in struct nesting.
4639: (expand_goto): Store it in struct goto_fixup.
4640: (fixup_gotos): Compare fixup's count with block's count.
4641: (save_stmt_status, restore_stmt_status): Handle block_start_count.
4642: * function.h (struct function): Make slot to save it.
4643:
4644: Thu Aug 16 18:02:03 1990 Richard Stallman (rms at mole.ai.mit.edu)
4645:
4646: * obtabs.c (expand_fix, expand_float): Support direct conversion
4647: between SFmode and fixed modes by library call.
4648:
4649: Wed Aug 15 18:36:28 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4650:
4651: * cccp.c (main): Allow -M to work on .s files by checking for .s
4652: and .S suffixes when writing dependencies.
4653:
4654: * reorg.c (optimize_skip, fill_eager_delay_slots, try_host_target):
4655: Don't need to call can_reverse_comparison_p because invert_jump is
4656: safe for floating-point; only reverse_condition isn't.
4657:
4658: Wed Aug 15 15:50:36 1990 Michael Tiemann (tiemann at cygnus.com)
4659:
4660: * dbxout.c (dbxout_type): Skip past const and volatile qualifiers
4661: that might appear in method names.
4662:
4663: Wed Aug 15 15:44:17 1990 Richard Stallman (rms at mole.ai.mit.edu)
4664:
4665: * c-parse.y (hash, is_reserved_word): Use __inline.
4666:
4667: * cccp.c (main): Support -dN and -dD. Support -lint.
4668: (dump_macros): Two new alternatives.
4669: (handle_directive): Output macro definitions if -dN or -dD.
4670: (rescan): Check comments if -lint.
4671: (get_lintcmd): New subroutine.
4672:
4673: * c-decl.c (c_decode_option): Handle -fshort-double.
4674: (init_decl_processing): Create double_type_node accordingly.
4675:
4676: * c-decl.c (c_decode_option): Handle -Wno...
4677:
4678: Tue Aug 14 23:10:40 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4679:
4680: * explow.c (break_out_memory_refs): Don't break out reference if
4681: constant but not legitimate constant for a machine insn.
4682: (memory_address): Only put legitimate constants, rather than all
4683: constants, into registers if they are used as an address.
4684:
4685: Tue Aug 14 14:34:02 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
4686:
4687: * reorg.c (steal_delay_list): Can't put something in a
4688: non-annulled delay slot that can trap.
4689:
4690: * tm-i860.h (GO_IF_LEGITIMATE_ADDRESS): Typo testing offset alignment.
4691:
4692: * cccp.c (do_assert, do_unassert, check_assertion): New functions.
4693: (compare_keyword_lists, read_keyword_list, free_keyword_list):
4694: New functions.
4695: * cexp.y (yylex): Allow `#' as token.
4696: Return name and length of symbol.
4697: (keywords): New nonterminal.
4698: (expr): Recognize # to test an assertion.
4699: (U_CHAR, struct arglist): Data types copied from cccp.c.
4700: (%union): New alternatives `keywords' and `name'.
4701:
4702: Mon Aug 13 22:26:19 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4703:
4704: * tm-romp.h (SLOW_BYTE_ACCESS): Set to 0.
4705:
4706: * expmed.c (store_bit_field, extract_bit_field): Use get_best_mode
4707: to select mode to use for accessing memory when bitfield insns don't
4708: accept memory.
4709:
4710: * c-common.c (rewrite_for_merged_ref, make_merged_ref): Deleted.
4711: (merge_component_comparisons): Delete from here.
4712: * c-tree.h (merge_component_comparisons): No longer global.
4713: * c-convert.c (build_binary_op_nodefault): Don't try to merge component
4714: references here; now done in fold.
4715: * cplus-typeck.c (build_binary_op_nodefault): Likewise.
4716: * Makefile.in (fold-const.o): Now includes flags.h.
4717: * fold-const.c: Likewise.
4718: (STRIP_NOPS): New macro.
4719: (decode_field_reference, all_ones_mask): New functions.
4720: (merge_component_references): Put rewritten version here.
4721: This fixes bugs in the way that comparisons with non-equal
4722: constants (!p->a && p->b) are handled and in endianness checking.
4723: Also accepts more general comparisons, and, in particular, its
4724: own output so more than a pair of operations can be merged.
4725: (fold): Call it for TRUTH_{AND*,OR*}_EXPR.
4726:
4727: * tree.def (BIT_FIELD_REF): New tree code.
4728: * expr.c (get_inner_reference): Support BIT_FIELD_REF.
4729: If bitfield is a complete mode-sized unit, return that mode; if it
4730: is a subset of bits within a mode-sized unit, return VOIDmode.
4731: (expand_assignment): Check for BIT_FIELD_REF.
4732: Use mode returned from get_inner_reference to see if bit field.
4733: (store_constructor): Likewise.
4734: (store_field): Don't pass arg BIT_FIELD; use MODE == VOIDmode
4735: instead. All callers changed.
4736: (expand_expr, case BIT_FIELD_REF): New case. Handled same as
4737: COMPONENT_REF.
4738: Use mode returned from get_inner_reference rather than DECL_BIT_FIELD.
4739: (expand_increment): Must stabilize BIT_FIELD_REF.
4740: (do_jump, case NOP_EXPR): Check for inner BIT_FIELD_REF and ARRAY_REF.
4741: (do_jump, case COMPONENT_REF): Generalize to handle BIT_FIELD_REF
4742: and some ARRAY_REFs also.
4743: * fold-const.c (operand_equal_p): Handle BIT_FIELD_REF.
4744: * tree.c (staticp): Rework to use switch instead of if-then-else.
4745: Add support for BIT_FIELD_REF.
4746: (stabilize_reference, simple_cst_equal): Support BIT_FIELD_REF.
4747:
4748: * c-common.c (truthvalue_conversion): Rework to use switch rather
4749: than if-then-else.
4750: Generate either TRUTH_{OR*|AND*}_EXPR or comparison operations as
4751: much as possible.
4752: Handle REAL_CST, ADDR_EXPR, ABS_EXPR, FLOAT_EXPR, FFS_EXPR,
4753: LROTATE_EXPR, RROTATE_EXPR, BIT_XOR_EXPR, and MINUS_EXPR.
4754: Call fold for COND_EXPRs that we make.
4755: * c-convert.c (build_unary_op): invert_truthvalue can't return 0,
4756: so don't check for it.
4757: (invert_truthvalue): Delete from here.
4758: (convert_to_integer, build_conditional_expr): Try to fold COND_EXPR.
4759: * c-plus-cvt.c (convert_to_integer): Likewise.
4760: * cplus-typeck.c (build_conditional_expr): Likewise.
4761: (build_unary_op): invert_truthvalue can't return 0.
4762: (invert_truthvalue): Delete from here.
4763: * fold-const.c (invert_truthvalue): Move to here.
4764: Don't invert floating-point test.
4765: Look inside conversions.
4766: Use recursive call to negate inside logical operations rather than
4767: building a TRUTH_NOT_EXPR.
4768: Allow only certain TREE_CODEs as operands; abort for the rest.
4769: (fold_convert): Accept second argument that is item being
4770: converted to ensure that NOPs have been stripped.
4771: (operand_equal_p): Return 0 if either operand has side effects.
4772: If both integer or real constants, check the values.
4773: Do a more thorough test to see if two items are identical;
4774: specifically, compare the operands of simple TREE_CODEs.
4775: (omit_one_operand, distribute_bit_expr): New functions.
4776: (make_bit_field_ref, optimize_bit_field_compare): Likewise.
4777: (fold): Remove LOSES; now done explicitly or by calling
4778: omit_one_operand. Some previous uses weren't needed.
4779: Try to fold any COND_EXPRs and some COMPOUND_EXPRs we make.
4780: Remove pair of NEGATE_EXPRs and BIT_NOT_EXPRs.
4781: Convert "- (a - b)" to "b - a" for non-floating-point.
4782: ABS_EXPR applied to ABS_EXPR or NEGATE_EXPR is ABS_EXPR of inner arg.
4783: Convert "a + (-b)" to "a - b" and "a - (-b)" to "a + b".
4784: If adding ANDs with constants that have no bits, in common, try
4785: bitwise-or, since we may then be able to distribute the operation,
4786: e.g., (a & 7) + (a & 0x70) -> a & 0x77.
4787: Add missing last arg to operand_equal_p call.
4788: Call distribute_bit_expr for BIT_AND_EXPR and BIT_IOR_EXPR.
4789: Exclusive-or with all ones is bit negation.
4790: If second arg of BIT_AND_TC_EXPR is constant, convert to BIT_AND_EXPR.
4791: Handle TRUTH_NOT_EXPR by calling invert_truthvalue.
4792: Call optimize_bit_field_compare for comparisons of bitfields.
4793: Handle "a ? 1 : 0" and "a ? 0 : 1" as test or negated test.
4794: Simplify "a & 4 ? a & 4 : 0" and "a ? a : 0" to remove conditonal.
4795: * stor-layout.c (get_best_mode): New function.
4796: * machmode.h: Define it.
4797: * tree.c (integer_pow2p): New function.
4798: * tree.h: Declare new functions and functions no longer static.
4799:
4800: Mon Aug 13 17:45:13 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
4801:
4802: * config.gcc (sun3-mach): New alternative.
4803: * tm-sun3mach.h: New file.
4804:
4805: * m68k.md (bfextu patterns): Set CC_NOT_NEGATIVE.
4806:
4807: Mon Aug 13 10:14:37 1990 Michael Tiemann (tiemann at cygnus.com)
4808:
4809: * cplus-decl2.c (flag_minimal_debug): Now is default is
4810: -fflag-minimal-debug.
4811:
4812: * cplus-tree.c (virtual_member): Return the assoc of a non-virtual
4813: basetype that comes from a virtual baseclass. Changed callers
4814: which used to call `value_member' to call virtual_member instead.
4815:
4816: Mon Aug 13 06:54:04 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4817:
4818: * optabs.c (expand_twoval_binop): Fix typo.
4819:
4820: * cse.c (lookup_as_function): Don't assume CODE is a unary
4821: operation. It might be a binary op or REG.
4822:
4823: Sun Aug 12 21:42:55 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4824:
4825: * expr.c (expand_expr, case COND_EXPR): Don't abort if first arg of
4826: COND_EXPR isn't a comparison; just suppress the do_store_flag call.
4827:
4828: Sun Aug 12 14:26:45 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
4829:
4830: * tree.h (enum built_in_function): Delete comma after last name.
4831: * c-parse.h (enum rid): Likewise.
4832: * expr.h (enum optab_methods): Likewise.
4833: * stab.h: Add dummy enum name at end.
4834:
4835: * config.gcc (genix): Set tm_file.
4836: * tm-genix.h (ASM_OUTPUT_DOUBLE): New overriding definition.
4837:
4838: * tree.h (struct tree_type, struct tree_decl): Handle ONLY_INT_FIELDS.
4839: * rtl.h (struct rtx_def): Likewise. That macro goes in xm-*.h.
4840:
4841: Sat Aug 11 16:56:19 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4842:
4843: * cplus-decl.c (finish_function): Check value of HAVE_return before
4844: calling gen_return.
4845:
4846: * reorg.c (optimize_skip): Don't reject skip when we jump around an
4847: insn and merge at the return point.
4848:
4849: Fri Aug 10 17:00:31 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
4850:
4851: * dbxout.c (dbxout_parms, dbxout_reg_parms): Ignore nameless parms.
4852: * sdbout.c (sdbout_parms, sdbout_reg_parms): Ignore nameless parms.
4853:
4854: Fri Aug 10 14:14:08 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4855:
4856: * recog.c (indirect_operand): Modes need not agree if MODE == VOIDmode;
4857: remove test from here since it is in memory_operand, which this calls.
4858:
4859: Thu Aug 9 15:19:17 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
4860:
4861: * c-decl.c (store_parm_decls): If function has variable number of args,
4862: put a dummy decl at end of parmlist.
4863: * c-parse.y (unary_expr): Handle &... with address of dummy decl.
4864:
4865: * tm-*.h (LEGITIMIZE_ADDRESS): Go to WIN instead of returning.
4866:
4867: * cccp.c (handle_directive): Add code to support `# DIGIT'
4868: but disable it for the time being.
4869:
4870: * tm-hp9k320.h (CPP_SPEC): Define _HPUX_SOURCE if not ANSI.
4871: (CPP_PREDEFINES): Don't define it here.
4872: Do define alternatives with __ prepended.
4873:
4874: Wed Aug 8 14:00:26 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4875:
4876: * out-romp.c: Don't include hard-reg-set; already in insn-output.c.
4877:
4878: * explow.c: insn-flags.h is needed to see if "probe" insn exists.
4879: * Makefile.in (explow.o): Likewise.
4880:
4881: Wed Aug 8 13:35:00 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
4882:
4883: * cccp.c (check_macro_name): Warn if name is `defined'.
4884:
4885: * tm-sun386i.h (ASM_IDENTIFY_GCC): If profiling, put a NOP after
4886: gcc_compiled.
4887:
4888: Tue Aug 7 23:51:38 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
4889:
4890: * toplev.c (main): Handle -W options like -f options.
4891: This supports -Wnounused, and such like.
4892: (warn_uninitialized): New variable, controls those warnings.
4893: Set it for -Wuninitialized, and for -W.
4894:
4895: Tue Aug 7 13:24:58 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4896:
4897: * genextract.c (walk_rtx): Fix typo in MATCH_PARALLEL case.
4898:
4899: * explow.c (allocate_dynamic_stack_space): Pass size of allocated stack
4900: to gen_probe.
4901:
4902: Tue Aug 7 12:19:46 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
4903:
4904: * pyr.md (extendsfdf2, truncsfdf2, float*, fix*): Use `&'.
4905:
4906: Tue Aug 7 07:13:54 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4907:
4908: * jump.c (find_cross_jump): Include a USE or CLOBBER in cross jump
4909: but don't count it against minimum size.
4910: Never return when cross-jump hasn't actually been done.
4911:
4912: Mon Aug 6 18:50:12 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4913:
4914: * varasm.c: Include regs.h.
4915: (decode_reg_name): Remove extern for reg_names; it is in regs.h.
4916: * Makefile.in (varasm.o): Depends on regs.h.
4917:
4918: Mon Aug 6 12:46:07 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
4919:
4920: * c-decl.c (grokdeclarator): Don't warn if initialized fcn is extern.
4921: (start_decl): Don't warn at all for initialized extern.
4922:
4923: * final.c (final_start_function): Handle PROFILE_BEFORE_PROLOGUE.
4924: (profile_function): New subroutine.
4925:
4926: * tm-i386sco.h: New file.
4927: * config.gcc (i386-sco): New alternative.
4928:
4929: * gcc.c (ENDFILE_SPEC): New macro.
4930: (do_spec_1): Handle %E.
4931: (link_spec): Use %E.
4932:
4933: * xm-i386.h (alloca): Define without arg.
4934:
4935: * Makefile.in (stage*): Use RANLIB_TEST.
4936: (LIMITS_H): New variable.
4937: (USER_H): Use that.
4938: * make-i386sco: New file.
4939:
4940: Sun Aug 5 13:11:04 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
4941:
4942: * rtl.h: Delete all machine mode defns; include machmode.h instead.
4943: * tree.h: Likewise.
4944: * machmode.h: New file.
4945: * stor-layout.c: No longer include rtl.h.
4946: * Makefile.in: (RTL_H, TREE_H): Add machmode.h.
4947: (stor-layout.o): No longer depends on RTL_H.
4948:
4949: * c-common.c (binary_op_error, shorten_compare): Should no longer
4950: have been static when moved here.
4951:
4952: Sun Aug 5 12:57:02 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
4953:
4954: * stor-layout.c (layout_record, layout_union): Test value of
4955: PCC_BITFIELD_TYPE_MATTERS for being nonzero, if it is defined.
4956: * tm-*.h: Define with value 1.
4957: * tm-vax.h (PCC_BITFIELD_TYPE_MATTERS): Depends on -mvaxc-alignment.
4958:
4959: * proto.h: New file.
4960: * Makefile.in (USER_H): Add that file.
4961:
4962: Sun Aug 5 00:04:08 1990 Michael Tiemann (tiemann at cygnus.com)
4963:
4964: * cplus-decl2.c (grokfield): It is no longer legal to specify
4965: the initializer for a static const member in the class
4966: declaration. Dealing with default initializers is basically
4967: impossible.
4968:
4969: * cplus-init.c (build_delete): Don't wrap `addr' in a SAVE_EXPR
4970: until it is in fact an address. This allows us to call
4971: destructors on the return values of function calls.
4972:
4973: * cplus-typeck.c (commontype): Fixed bug in OFFSET_TYPE case which
4974: led to infinite recursion (since we did not reduce the types
4975: before we recursed).
4976:
4977: * cplus-lex.c (check_newline): Make `#pragma implementation' more
4978: forgiving.
4979:
4980: * cplus-init.c (expand_aggr_init): Changed Jan 20th change so that
4981: we test whether TYPE has a constructor defined, and we do not test
4982: at all whether INIT was from a GNU constructor expression or not.
4983:
4984: * cplus-typeck.c (build_modify_expr_1): Don't return
4985: `error_mark_node' unless there really was an error. If there is
4986: no work to do, return `integer_zero_node'.
4987:
4988: * cplus-class.c (propagate_basetype_offsets): Count the space
4989: between baseclasses, not just the space they occupy.
4990:
4991: * cplus-typeck.c (commontype): Don't drop the exceptions that are
4992: raised by functions and methods.
4993:
4994: * cplus-cvt.c (convert_to_real): Fix if/else level problem in
4995: case where EXPR is of aggregate type.
4996:
4997: * cplus-decl.c (finish_decl): Emit a line-number note to give
4998: users a chance to set a breakpoint before the initialization of an
4999: object takes place.
5000:
5001: * cplus-class.c (build_method_call): If the function we get is not
5002: directly from the object we have, call `convert_pointer_to' if the
5003: object uses multiple inheritance or virtual baseclasses.
5004:
5005: * cplus-typeck.c (build_binary_op_nodefault): Don't call
5006: `convert_to_pointer' with an argument that might be
5007: the integer zero.
5008:
5009: * cplus-method.c (hack_identifier): Look for DECL_REFERENCE_SLOT
5010: in RESULT_DECLs as well.
5011:
5012: * cplus-init.c (build_vec_delete): Don't forget to deallocate the
5013: container if requested. Really use AUTO_DELETE and
5014: AUTO_DELETE_VEC with the same interpretation as `build_delete'
5015: gives to its AUTO_DELETE parameter.
5016:
5017: Sat Aug 4 22:08:44 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5018:
5019: * jump.c (find_cross_jump): Use prev_nonnone_insn.
5020: Don't cross-jump into the middle of a USE-CALL_INSN-CLOBBER
5021: block; doing so can confuse reorg.c.
5022:
5023: * optabs.c (expand_binop, expand_binop, expand_twoval_binop):
5024: If predicate doesn't match, ensure that operand is in a pseudo
5025: register. Current code assumes that any register will suffice,
5026: but an insn may want to reject certain hard registers.
5027: (expand_unop, emit_unop_insn, emit_cmp_insn): Likewise.
5028:
5029: Sat Aug 4 15:29:09 1990 Michael Tiemann (rms at sugar-bombs.ai.mit.edu)
5030:
5031: * function.c (assign_parms): For parms passed by reference,
5032: make the memory object's mode agree with the parm's original
5033: type mode.
5034: * calls.c (expand_call): Fixed braino in building argument
5035: reference when FUNCTION_ARG_PASS_BY_REFERENCE is defined.
5036:
5037: * varasm.c (assemble_variable): Hack our way around the problem
5038: that static class members look like initialized variables for the
5039: purposes of establishing FIRST_GLOBAL_OBJECT_NAME.
5040:
5041: * cplus-lex.c (reinit_parse_for_method): Give error message for
5042: common mistake of forgetting the function body.
5043:
5044: * cplus-typeck.c (build_component_ref): Make better error message
5045: when field is not found.
5046:
5047: * cplus-class.c (finish_struct): TYPE_GETS_*_INIT_REF comes from
5048: members as well.
5049:
5050: * cplus-typeck.c (c_expand_return): Give warning about returning
5051: non-lvalues that come from functional casts.
5052:
5053: * cplus-search.c (get_base_distance): Changed to follow leftmost
5054: path only when PARENT == TYPE_MAIN_VARIANT (PARENT).
5055:
5056: * cplus-class.c (modify_vtable_entries): Call get_base_distance
5057: with 0 path_ptr, since we do not appear to use the path computed.
5058:
5059: Fri Aug 3 07:37:30 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5060:
5061: * final.c (leaf_function_p): Delete line advertently retained
5062: after change of July 29.
5063:
5064: * reorg.c (optimize_skip, try_hoist_target): Don't invert jump
5065: unless can_reverse_comparison_p says it is OK. Use invert_jump
5066: to do it.
5067: (fill_simple_delay_slots): Another way flow of control can merge is
5068: for two insns to jump to the same place; try to get insns from there.
5069: (mostly_true_jump): Return 2 for a jump very likely to be true (the
5070: branch back to the start of a loop).
5071: (fill_slots_from_thread): Accept new arg LIKELY. If true, see if can
5072: put increment in delay slot and undo it after the end of the loop.
5073: (fill_eager_delay_slots): Pass new arg to fill_slots_from_thread.
5074: If previous insn is conditional jump that also didn't get a delay
5075: slot, see if swapping targets helps.
5076:
5077: Fri Aug 3 00:18:35 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5078:
5079: * cccp.c (MAKE_POS): Avoid constant of uncertain signedness.
5080:
5081: * gnulib2.c (__bb_init_func): Add dummy function to prevent warning.
5082:
5083: Thu Aug 2 17:44:59 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5084:
5085: * output.h (current_function_return_rtx): Add new variable.
5086: * function.h (return_rtx): Likewise.
5087: * function.c (push_function_context, pop_function_context): Save
5088: and restore current_function_return_rtx.
5089: (assign_parms, expand_function_start): Set current_function_return_rtx
5090: to what is put in DECL_RTL (DECL_RESULT (current_function_decl)).
5091: * reorg.c: No longer uses tree.h.
5092: (dbr_schedule): Get result RTL from current_function_return_rtx instead
5093: of reading it from current_function_decl.
5094: * Makefile.in (reorg.o): No longer depends on TREE_H.
5095:
5096: * cse.c (remove_invalid_refs): Only invalidate an entry if it
5097: references the actual register, not merely something sharing its
5098: quantity.
5099: (cse_insn): Don't abort if SRC and SRC_EQUIV map to different
5100: hash classes. Merge them instead.
5101:
5102: * romp.md (mulsi3): Emit call to lmul$$ as a regular insn
5103: rather than a CALL_INSN.
5104: (divsi3, modsi3, udivsi3, umodsi3, call_libfcn): Deleted.
5105: (divmodsi4, udivmodsi4): New patterns to call ldiv$$ and uldiv$$
5106: as a normal insn to allow CSE'ing of MOD with DIV.
5107:
5108: Wed Aug 1 21:56:08 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5109:
5110: * c-parse.y (yylex): Don't warn about non-decimal unsigned by default
5111: if `u' was specified. Add similar warning for long and long long.
5112:
5113: Tue Jul 31 23:31:46 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5114:
5115: * tm-encore.h (FUNCTION_PROFILER): Override, putting `.' in label.
5116:
5117: * xm-vms.h (const): Delete the definition.
5118:
5119: Mon Jul 30 18:33:04 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5120:
5121: * c-typeck.c (convert_for_assignment): Normally no warning
5122: between char * and unsigned char *, etc.
5123: (convert_arguments): Include arg number in incomplete type warning.
5124:
5125: Mon Jul 30 07:38:55 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5126:
5127: * jump.c (invert_jump): Don't do anything with labels if NLABEL
5128: equals JUMP_LABEL.
5129: (redirect_jump): Don't try to reference LABEL_NUSES if olabel is
5130: zero (meaning this is a return insn).
5131: (redirect_exp): Handle case of converting return to jump to
5132: label.
5133:
5134: * dbxout.c (dbxout_parms): Allow parameter at zero offset from
5135: AP to be represented as (MEM (REG ...)).
5136: * sdbout.c (sdbout_parms): Likewise.
5137:
5138: Sun Jul 29 22:51:00 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5139:
5140: * optabs.c (expand_twoval_binop_convert): Deleted.
5141: (expand_twoval_binop): Rework to be handle predicates, modes, and
5142: failures in a manner consistent with expand_binop.
5143: Move code from expand_twoval_binop_convert inline and rework to
5144: no longer hard-wire SImode and to handle failure.
5145:
5146: * config.gcc: Finish change of July 24th to have make_var_file depend
5147: on host machine.
5148:
5149: * jump.c: Now includes insn-flags.h.
5150: (jump_optimize): Try to put a RETURN at the end of the function if
5151: control flows through to it.
5152: JUMP_LABEL can now be zero for a RETURN or conditional RETURN.
5153: Try to convert jump to end of function into (possibly conditional)
5154: RETURN.
5155: Use next_active_insn instead of next_real_insn; these do the same
5156: thing prior to reload, after which USE and CLOBBERs don't matter.
5157: redirect_jump may now fail so don't set CHANGED if it does.
5158: Delete optimization of jump to RETURN; now subsumed by follow_jumps.
5159: Reset INSN_CODE if changing conditional jump to unconditional.
5160: (cond_jump_p): Conditional RETURN is conditional jump.
5161: (follow_jumps): Change argument name to AFTER_RELOAD.
5162: If not after reload, do not chain across a USE or CLOBBER.
5163: Recognize RETURN insns.
5164: (tension_vector_labels): Likewise.
5165: (redirect_jump, redirect_exp): If NLABEL is zero, turn JUMP into a
5166: (possibly conditional) RETURN; use validate_change to see if such an
5167: insn exists.
5168: Now returns non-zero if succeeds, 0 otherwise.
5169: Unconditional RETURN looks like (RETURN), not (SET (PC) (RETURN)).
5170: (thread_jumps): Ignore any type of RETURN insn.
5171: * Makefile.in (jump.o): Depends on insn-flags.h.
5172: * loop.c (strength_reduce): Don't confuse conditional return with
5173: jump to top of loop when LOOP_TOP == 0.
5174: * final.c (leaf_function_p): No longer static; no longer takes an arg.
5175: (final_start_function): Don't pass START to leaf_function_p.
5176: * romp.md (return pattern): Convert to a named pattern.
5177:
5178: Sun Jul 29 16:05:27 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5179:
5180: * tm-vms.h (ASM_OUTPUT_EXTERNAL): Check TREE_READONLY.
5181:
5182: * xm-vms.h (alloca): Use built-in alloca.
5183:
5184: Sun Jul 29 06:47:33 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5185:
5186: * reorg.c (fill_slots_from_thread): Restore inadvertantly deleted
5187: lines.
5188:
5189: Fri Jul 27 19:53:18 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5190:
5191: * Makefile.in (reorg.o): Depends on tree.h, basic-block.h, regs.h,
5192: and output.h
5193:
5194: Fri Jul 27 16:30:03 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5195:
5196: * varasm.c (assemble_variable): Handle ASM_OUTPUT_SHARED_COMMON
5197: and ASM_OUTPUT_SHARED_LOCAL.
5198:
5199: * tm-encore.h (SHARED_SECTION_ASM_OP): New macro.
5200: (ASM_OUTPUT_SHARED_COMMON, ASM_OUTPUT_SHARED_LOCAL): New.
5201: All this waiting for papers from [email protected].
5202:
5203: Fri Jul 27 16:10:02 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5204:
5205: * make-romp (CC): Set up to allow use of hc.
5206:
5207: Fri Jul 27 15:07:00 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5208:
5209: * combine.c (subst): Handle (ASHIFT 1 x) in (EQ (AND ... y) 0)
5210: only if little-endian.
5211:
5212: Thu Jul 26 23:19:15 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5213:
5214: * expmed.c (expand_shift): Consistently call protect_from_queue
5215: before doing anything else.
5216: Always put operand1 of extzv into a register because it is SImode
5217: and we assume that this means a register.
5218:
5219: Thu Jul 26 14:18:11 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5220:
5221: * varasm.c (assemble_variable): Delete dead code.
5222: DATA_ALIGNMENT takes tree and current alignment and gives new
5223: alignment for a non-automatic variable of that type.
5224: Also apply CONSTANT_ALIGNMENT to the initial value; it now takes
5225: the constant and old alignment and gives the new alignment.
5226: Adjust DECL_ALIGN to the resulting alignment.
5227: Use floor_log2 consistently instead of duplicating its function.
5228: (get_or_assign_label): Use CONSTANT_ALIGNMENT instead of DATA_ALIGNMENT
5229: and pass type instead of decl.
5230: * expr.c (get_pointer_alignment): Rework to: distinguish reliably
5231: between expressions giving the address and those giving the item being
5232: addressed; use the alignment from the type of the object being
5233: pointer to; return 0 if the type is not a pointer; and other
5234: miscellaneous changes.
5235: (string_constant): Skip CONVERT_EXPR and NON_LVALUE_EXPR as well
5236: as NOP_EXPR.
5237: (expand_builtin): Allow get_pointer_alignment to fail, in which case
5238: we call the actual function.
5239: * stmt.c (expand_decl): Set actual alignment obtained into DECL_ALIGN
5240: since it may be better aligned than required and get_pointer_alignment
5241: can take advantage of this.
5242: * tm-gmicro.h, tm-pyr.h, tm.romp-h: Add or replace definitions of
5243: CONSTANT_ALIGNMENT to word-align string constants and
5244: DATA_ALIGNMENT to word-align character arrarys for builtin memory
5245: functions.
5246:
5247: * fold-const.c (rshift_double): Reset carry after each shift of
5248: one bit.
5249:
5250: * vax.md (ashrsi3): If right shift by constant, emit as ASHIFTRT.
5251: (ashrsi3_const): New pattern to match it.
5252: (casel): Delete patterns no longer needed.
5253: * cse.c (cse_insn): Remove unneeded part of change of July 23.
5254: (fold_rtx): Convert shift with negative constant count to shift in
5255: the opposite direction.
5256: * combine.c (subst): Likewise.
5257:
5258: * emit-rtl.c (init_emit_once): Initialize arg_pointer_rtx before
5259: struct pointer and static chain values in case they want to use it.
5260:
5261: Thu Jul 26 12:31:02 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5262:
5263: * final.c (final_scan_insn): Align label table to boundary appropriate
5264: for items of its size.
5265: (get_attr_length, shorten_branches): Allow for label table alignment.
5266:
5267: Wed Jul 25 15:06:44 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5268:
5269: * fixincludes: Handle uses of _IO* followed by spaces.
5270: Change redirections for cd when testing that directory exists.
5271:
5272: By Tiemann:
5273:
5274: * emit-rtl.c (next_cc0_user): Handle insns in which cc0
5275: is set and used in the same insn.
5276:
5277: * final.c (leaf_function_p): Look inside INSNs which contain
5278: a delayed-call sequence.
5279: (final_start_function): Test `only_leaf_regs_used' before
5280: `leaf_function_p', since that is likely to be faster.
5281: (final_scan_insns): Normally we don't have NOTICE_UPDATE_CC
5282: take action when processing the path of an annulled branch,
5283: since that path does not affect the cc's of the fall-through
5284: insns at all. However, we cannot always ignore the effect of
5285: the cc's when processing a delayed annulled branch: when the
5286: delayed annulled branch follows a label and carries a
5287: REG_CC_STATUS note, that note must be processed.
5288:
5289: * genattr.c (main): Generate #defines for annulled branches
5290: which are consistent with documentation.
5291:
5292: * reorg.c: Finish recent rework by modifying code specific to
5293: machines that have annulling branches.
5294:
5295: * c-common.c (merge_component_comparisons): Previous logic did
5296: not handle cases of (A == 1) && (B == 1), (A != 0) && (B != 0),
5297: and (A != 1) || (B != 1). Fixed by expanding the logic out
5298: longhand and letting the compiler do the proper cross-jumping.
5299:
5300: * tm-vms.h (ASM_OUTPUT_EXTERNAL): Use assemble_name.
5301:
5302: * expr.c (expand_expr): For BIND_EXPR, do the init for all vars.
5303:
5304: * stupid.c: Include flags.h.
5305: * genrecog.c (main): Make insn-recog.c include flags.h.
5306:
5307: Sun Jul 22 12:04:43 1990 Michael Tiemann (tiemann at cygnus.com)
5308:
5309: * cplus-except.c (cplus_expand_end_except): If the user gives a
5310: default handler, the exception is considered caught in that
5311: handler.
5312: * cplus-parse.y (except_stmts): Rest of fix went here, in DEFAULT
5313: case.
5314:
5315: * cplus-decl.c (finish_decl): Don't emit cleanups twice.
5316:
5317: * cplus-class.c (finish_struct_bits): Don't call
5318: `fixup_vbase_offsets'.
5319: * cplus-tree.c (fixup_vbase_offsets): #if 0 this function.
5320:
5321: * cplus-cvt.c (build_default_binary_type_conversion): Handle
5322: arguments which are REFERENCE_TYPE.
5323:
5324: * cplus-method.c (prepare_inline): Set DECL_CONTEXT of this
5325: function's parameters.
5326:
5327: * cplus-decl.c (grokfndecl): When adding a new virtual function
5328: entry, RAISES may change a second time.
5329:
5330: Thu Jul 5 10:44:39 1990 Michael Tiemann (tiemann at cygnus.com)
5331:
5332: * cplus-decl2.c (grokfield): Static consts need not be initialized
5333: in the class definition.
5334:
5335: Mon Jul 2 06:12:49 1990 Michael Tiemann (tiemann at cygnus.com)
5336:
5337: * cplus-init.c (resolve_offset_ref): If BASETYPE is not a base
5338: type for the current class, give error and return.
5339:
5340: Sun Jul 1 00:18:47 1990 Michael Tiemann (tiemann at cygnus.com)
5341:
5342: * cplus-decl.c (finish_function): Throw away more code if we have
5343: an inline function from the interface.
5344:
5345: * cplus-class.c (add_virtual_function): Set DECL_VINDEX from the
5346: virtual function which comes from the vtable shared by
5347: CURRENT_CLASS_TYPE, if possibe.
5348:
5349: * cplus-typeck.c (build_binary_op): Call `default_conversion'
5350: after doing type instantiation.
5351:
5352: * cplus-init.c (build_new): New 2.0 interpretation: `new int (10)'
5353: means allocate an int, and initialize it with 10.
5354:
5355: * cplus-init.c (emit_base_init): Completion of fix for virtual
5356: function table initialization. @@ BTW, this may now cause extra
5357: virtual function table initializations. They will all be correct,
5358: but they may also be redundant. GCC's optimizer doesn't know how
5359: to remove even the simplest such redundancy.
5360:
5361: Sat Jun 30 13:54:30 1990 Michael Tiemann (tiemann at cygnus.com)
5362:
5363: * cplus-class.c (finish_base_struct): Store BASETYPE in the
5364: VFIELDS chain (in its TREE_TYPE).
5365:
5366: Fri Jun 29 09:26:17 1990 Michael Tiemann (tiemann at cygnus.com)
5367:
5368: * cplus-class.c (build_vtable,prepare_fresh_vtable): Stash the
5369: type that caused this vtable to be defined in DECL_CONTEXT
5370: * cplus-search.c (bfs_unmark_finished_struct): Work around
5371: DECL_CONTEXT conflict for vtables. @@ NOT A SOLUTION.
5372:
5373: * cplus-lex.c: Extend meaning of `#pragma implementation'
5374: to allow files to `implement' types from general headers.
5375:
5376: Tue Jul 24 22:18:23 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5377:
5378: * reorg.c: Major rework. Changes includes:
5379: (mark_target_live_regs): Scan code to compute which registers are
5380: live at particular insns. Uses tables created by flow, REG_DEAD
5381: notes, and registers set before they are used.
5382: (emit_delay_sequence): Always write SEQUENCE as INSN. Many routines
5383: changed to reflect this.
5384: (fill_simple_delay_slots): Loop for merge point when target of jump
5385: comes back to fallthrough code. Try to get insns from there.
5386: (fill_eager_delay_slots): Fallthrough and target case merged into new
5387: function fill_slots_from_thread.
5388:
5389: * tm-romp.h, romp.md, out-romp.c, xm-romp.h, make-romp: New files to
5390: support the ROMP microprocessor, used in the IBM PC RT.
5391:
5392: * recog.c (comparison_operator): New function.
5393:
5394: * jump.c (jump_optimize): If putting constant into register, see
5395: if it is already present in the register.
5396:
5397: Tue Jul 24 15:35:04 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5398:
5399: * c-typeck.c (build_binary_op_nodefault): Allow compare of any
5400: pointer with const void *, etc.
5401:
5402: Tue Jul 24 17:10:59 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5403:
5404: * expr.c (get_inner_reference): New function.
5405: (expand_assignment): Use it to find out about our target.
5406: (expand_expr, case COMPONENT_REF): Likewise.
5407: (expand_expr, case COND_EXPR): If can do store-flag, convert
5408: X ? A+1 : A to A + (X!=0); fold-const made the former from the latter.
5409: Only create label when we know we will need it.
5410: Simplify unnessarily complex call to safe_from_p.
5411: (expand_expr): Make new variable UNSIGNEDP and use it instead
5412: of TREE_UNSIGNED (type). Also, consistently use existing
5413: variable TYPE instead of TREE_TYPE (exp) and similarly for MODE.
5414:
5415: Tue Jul 24 13:50:33 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5416:
5417: * cccp.c (collect_expansion): Error if ## at beg or end.
5418:
5419: * c-decl.c (grokdeclarator): Error for long, etc. with nonarith type.
5420: Error for signed or unsigned with floating type.
5421: Error for initialized parm.
5422:
5423: * config.gcc: Make make_var_file depend on host machine, not target.
5424:
5425: Tue Jul 24 13:40:35 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5426:
5427: * varasm.c (decode_reg_name): Make TABLE static for non-GCC compilers.
5428:
5429: * c-typeck.c (type_for_size, type_for_mode): Delete from here.
5430: (binary_op_error, shorten_compare, truthvalue_conversion): Likewise.
5431: * cplus-typeck.c: Delete second copy from here.
5432: * c-common: Move above functions to here.
5433:
5434: Tue Jul 24 12:20:04 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5435:
5436: * cccp.c (path_include): Fix typo in var name.
5437:
5438: Mon Jul 23 17:46:57 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5439:
5440: * config.gcc: Remove redundant assignment to tm_file for 88000.
5441: Fix typo when assigning to make_var_file.
5442:
5443: * function.c (optimize_bit_field): Fix typo in change_address call.
5444:
5445: Mon Jul 23 16:59:27 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5446:
5447: * varasm.c (decode_reg_name): Ignore % at beginning of name.
5448: Support extra names defined by ADDITIONAL_REGISTER_NAMES.
5449: * tm-i386.h (ADDITIONAL_REGISTER_NAMES): Define it.
5450:
5451: * dbxout.c (dbxout_init): Handle new macros
5452: ASM_OUTPUT_MAIN_SOURCE_FILENAME and ASM_OUTPUT_MAIN_SOURCE_DIRECTORY.
5453: * sdbout.c (sdbout_filename): Handle ASM_OUTPUT_MAIN_SOURCE_FILENAME.
5454:
5455: Mon Jul 23 16:50:32 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5456:
5457: * tm-vax.h (NOTICE_UPDATE_CC): CALL clobbers CC if inside PARALLEL too.
5458:
5459: * vax.md (call_value_pop): Fix typo in argument number.
5460:
5461: * cse.c (cse_insn): Shift's aren't associative if in different
5462: directions, even if same rtx_code.
5463: Try to fold result of associating the operation in case it is now
5464: trivial.
5465:
5466: * jump.c (mark_modified_reg): New function.
5467: (thread_jumps): Look at insns between target of first jump and the
5468: second jump. Mark any registers that they modify and record if they
5469: modify memory.
5470: Don't go past a CODE_LABEL.
5471: If we pass an unconditional jump, follow it.
5472: Use prev_nonnote_insn instead of explicit loop.
5473: (rtx_equal_for_thread_p): Consult recorded information to see if
5474: memory of registers were modified prior to second jump.
5475: * Makefile.in (jump.o): Now needs hard-reg-set.h.
5476:
5477: Sat Jul 21 13:58:16 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5478:
5479: * cccp.c (O_RDONLY): Define it if not defined.
5480:
5481: * c-decl.c (finish_decl): No error for nonstatic incomplete array.
5482:
5483: Sat Jul 21 08:24:04 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5484:
5485: * alliant.md (call patterns): Function address must be memory operand.
5486: * convex.md, m68k.md, mips.md, ns32k.md, tahoe.md, vax.md: Likewise.
5487:
5488: Thu Jul 19 16:06:02 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5489:
5490: * cccp.c (path_include): New function.
5491: (main): Call that to handle CPATH envvar.
5492:
5493: * varasm.c (assemble_variable): Error if size exceeds 2**32-1.
5494:
5495: * emit-rtl.c (init_emit_once): Pass write_symbols to this function
5496: (init_emit): Not this one. All callers changed.
5497:
5498: Tue Jul 17 21:24:08 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5499:
5500: * local-alloc.c (update_equiv_regs): Don't replace a register with
5501: an equivalence if the insn making the equivalence has a source
5502: different from the equivalent value.
5503:
5504: Tue Jul 17 16:47:42 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5505:
5506: * expr.c (emit_block_move): Allow movstr* to fail.
5507:
5508: Tue Jul 17 15:19:18 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5509:
5510: * emit-rtl.c (change_address): Don't call memory_address if reload
5511: is in progress, not just after it has completed.
5512:
5513: Mon Jul 16 00:34:27 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5514:
5515: * jump.c (can_reverse_comparison_p): New function.
5516: (jump_optimize): In if (x) ... else x = 0; reverse comparison
5517: if second operand of IF_THEN_ELSE is PC; use new function to
5518: validate the reversal.
5519: (jump_back_p): Use new function to see if safe to reverse comparison.
5520:
5521: Sun Jul 15 17:03:31 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5522:
5523: * jump.c (jump_optimize): Bug in last change; reject uncond jump
5524: where conditional is expected.
5525:
5526: * flow.c (mark_used_regs): Handle autoincrement for *p
5527: followed by q = p+size (neither one dead).
5528:
5529: Sat Jul 14 22:37:45 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5530:
5531: * combine.c (subst): Remove (zero_extend (subreg)) around lshiftrt.
5532: Remove (and...) from second arg of shift.
5533: Remove (and...) from around shift.
5534:
5535: Sat Jul 14 21:35:50 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5536:
5537: * local-alloc.c (update_equiv_regs): New function.
5538: (local_alloc): Call it.
5539: (block_alloc): Don't handle REG_EQUIV notes here; now done in
5540: update_equiv_reg.
5541:
5542: * calls.c: Include insn-flags.h.
5543: * Makefile.in (calls.o): Likewise.
5544:
5545: Sat Jul 14 13:28:28 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5546:
5547: * c-decl.c (duplicate_decls): Don't set DECL_FRAME_SIZE for builtins.
5548:
5549: * vax.md (SImode bit-field patterns): Use nonmemory_operand.
5550:
5551: * jump.c (jump_optimize):
5552: For if (...) x = 1; else x = 0; x must be integer.
5553:
5554: * gcc.c (default_compilers): Pass -P to cpp.
5555:
5556: Thu Jul 12 23:38:14 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5557:
5558: * stor-layout.c (layout_record): Handle BITFIELD_NBYTES_LIMITED.
5559:
5560: * sparc.md (call recognizers): Don't allow address arithmetic.
5561:
5562: Thu Jul 12 21:47:45 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5563:
5564: * emit-rtl.c (change_address): If reload has completed, don't call
5565: memory_address. Instead, abort if address is not valid.
5566:
5567: Thu Jul 12 20:41:32 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5568:
5569: * calls.c (emit_call_1): Handle vax, without call and call_value.
5570:
5571: Thu Jul 12 20:39:33 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5572:
5573: * cse.c (merge_equiv_classes): New function, from record_jump_equiv.
5574: (record_jump_equiv): Use new function.
5575: (gen_lowpart_if_possible): New function, based on gen_lowpart.
5576: (cse_insn): In some cases of (set (subreg (FOO) 0) (BAR)), note
5577: that (subreg BAR) is an equivalent of FOO.
5578: * integrate.c (expand_inline_function): Likewise.
5579:
5580: * combine.c (subst): Check for constant in merge of shift into
5581: ZERO_EXTRACT.
5582: (gen_lowpart_for_combine): Look for SIGN_EXTEND or ZERO_EXTEND:
5583:
5584: * emit-rtl.c (gen_lowpart, gen_highpart): If passed a hard register,
5585: return a new rtx for it in the proper mode, rather than a SUBREG.
5586:
5587: Wed Jul 11 17:05:04 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5588:
5589: * cse.c (cse_insn): If already have a REG_WAS_0 note, don't make
5590: another one.
5591: Rework some loops on SETs to eliminate duplicate code and clean up
5592: a bit.
5593:
5594: * rtlanal.c (refers_to_regno_p, reg_overlap_mentioned): Allow these
5595: to work on pseudos as well as hard registers.
5596:
5597: * optabs.c (emit_no_conflict_block): Use reg_overlap_mentioned
5598: to see if register is mentioned in insn.
5599:
5600: Wed Jul 11 16:56:01 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5601:
5602: * jump.c (jump_optimize): Don't optimize jumps to store-flags
5603: if after register allocation. And don't do it if memref is used.
5604:
5605: Wed Jul 11 16:12:55 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5606:
5607: * emit-rtl.c ({next,prev}_nonnote_insn, prev_label, prev_cc0_setter):
5608: New functions.
5609: ({next,prev}_{real,active}_insn, next_label): Rework to allow
5610: argument of zero; return zero in that case.
5611: (next_active_insn, prev_active_insn): If reload is not yet complete,
5612: do the same thing as next_real_insn and prev_real_insn.
5613: (next_cc0_user): Fix some bugs and typos.
5614:
5615: * rtlanal.c (reg_mentioned_p): Allow searches for labels to work.
5616:
5617: Wed Jul 11 12:25:27 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5618:
5619: * c-decl.c (duplicate_decls): In prev fix, use TREE_PUBLIC both times.
5620:
5621: Tue Jul 10 22:54:31 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5622:
5623: * rtl.def (trap): New code.
5624:
5625: Tue Jul 10 17:48:26 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5626:
5627: * tree.c (integer_zerop, integer_onep, integer_all_onesp): Look inside
5628: a NON_LVALUE_EXPR.
5629: (real_zerop, real_onep, simple_cst_equal): Likewise.
5630:
5631: Tue Jul 10 17:05:50 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5632:
5633: * c-parse.y, objc-parse.y, cplus-lex.c (yylex):
5634: Terminate token_buf after integer.
5635:
5636: Mon Jul 9 15:22:22 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5637:
5638: * c-decl.c (duplicate_decls): Correct test for extern followed by
5639: static function declaration.
5640:
5641: Mon Jul 9 14:13:06 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5642:
5643: * c-decl.c (grokdeclarator): Move warning and error
5644: about initializer with extern to the same place. Do one or the other.
5645:
5646: * rltanal.c (reg_mentioned_p): Don't look inside a CONST_DOUBLE.
5647:
5648: Sun Jul 8 14:12:21 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5649:
5650: * toplev.c (pedwarn, pedwarn_with_file_and_line, pedwarn_with_decl):
5651: New functions.
5652: (flag_pedantic_errors): New variable controls them.
5653: * c-decl.c, c-parse.y, c-typeck.c: Use new functions for many warnings.
5654: * varasm.c: Likewise.
5655: * gcc.c (default_compilers): Pass -pedantic* to cc1, cpp, etc.
5656: * cccp.c (pedwarn): New function. Many calls to `warning' changed.
5657:
5658: * c-common.c (c_expand_expr_stmt): New function.
5659: Error about incomplete type moved here.
5660: * expr.c (expand_expr): Error deleted from here.
5661: * c-parse.y: Use c_expand_expr_stmt where suitable.
5662:
5663: * flow.c (propagate_block): Set following_insn_dead on insn after test.
5664: (mark_used_regs): Test that var; don't call insn_dead_p here.
5665:
5666: Fri Jul 6 13:05:01 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5667:
5668: * c-typeck.c (build_indirect_ref):
5669: No error if result is incomplete array.
5670:
5671: * expmed.c (store_bit_field, extract_bit_field): New arg TOTAL_SIZE.
5672: Don't extract a bigger unit from memory than this.
5673: * expr.c: Callers changed.
5674: (store_field): New arg TOTAL_SIZE; callers changed.
5675:
5676: * out-ns32k.c (print_operand_address): Changes from Ian Dall.
5677: * xm-ns32k.h: Use built in alloca.
5678: * ns32k.md (ashlsi3): Don't forget to return a value.
5679: (movsf): Output floating constants only if GAS_SYNTAX.
5680: (call, call_value): Support JSR_ALWAYS.
5681: Change handling of bsr if GAS_SYNTAX.
5682: (bit test patterns): Use g constraint for op1 and rm for op0.
5683:
5684: Thu Jul 5 21:53:10 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5685:
5686: * c-typeck.c (build_c_cast): Don't do implicit arithmetic conversions.
5687: * fold-const.c (fold): Don't combine two conversions if one is
5688: signed and the other is unsigned.
5689: * integrate.c (copy_parm_decls): Finish making last change.
5690:
5691: Thu Jul 5 18:26:03 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5692:
5693: * expr.c (safe_from_p): If EXP is readonly memory, any memory location
5694: is safe from it.
5695:
5696: Thu Jul 5 15:05:19 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5697:
5698: * gnulib2.c (__fixunsdfsi): Change > to >=.
5699:
5700: * c-decl.c (start_struct, start_enum): Set C_TYPE_BEING_DEFINED.
5701: (grokdeclarator): Don't warn of array if elt type being defined.
5702:
5703: * c-typeck.c (build_conditional_expr): Handle ((void *) 0).
5704: Allow 0 versus function pointer.
5705:
5706: Thu Jul 5 08:05:09 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5707:
5708: * cse.c (cse_insn): If machine has post-increment, don't associate
5709: PLUS operations if they are both adding the same constant that is
5710: a power of two. Similarly for post-decrement.
5711:
5712: Wed Jul 4 19:04:20 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5713:
5714: * flow.c (mark_used_regs): Don't scan a comparison if the following
5715: insn that uses the cc's is dead.
5716:
5717: * flow.c (propagate_block): If cc-using insn is dead, so is previous.
5718:
5719: * expmed.c (emit_store_flag): New function.
5720:
5721: Wed Jul 4 18:45:04 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5722:
5723: * c-typeck.c (common_type, comptypes, default_conversion):
5724: Use TYPE_READONLY in type to indicate const type; use TREE_READONLY
5725: in decl to indicate object will never change.
5726: (build_unary_op, readonly_warning, build_modify_expr): Likewise.
5727: (c_expand_asm_operands): Likewise.
5728: * cplus-class.c (finish_struct_bits): Likewise.
5729: * cplus-cvt.c (build_type_conversion): Likewise.
5730: * cplus-type2.c (readonly_warning_or_error): Likewise.
5731: * cplus-typeck.c (default_conversion, build_unary_op): Likewise
5732: (build_modify_expr, c_expand_asm_operands): Likewise.
5733:
5734: * cplus-cvt.c (popclass): When making INDIRECT_REF, don't set
5735: TREE_READONLY from TYPE_READONLY.
5736:
5737: Wed Jul 4 15:16:37 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5738:
5739: * jump.c (jump_optimize): Fix bugs in last change.
5740:
5741: Wed Jul 4 07:52:53 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5742:
5743: * expr.c (expand_expr, case COMPONENT_REF): Delete extraneous test
5744: for structure-value stack slot, which no longer exists.
5745:
5746: * reload1.c (bad_spill_regs): Should be static.
5747:
5748: * combine.c (subst, gen_lowpart_for_combine): Propagate
5749: RTX_UNCHANGING_P when making a new MEM.
5750: * c-typeck.c, cplus-typeck.c (build_indirect_ref): ANSI says that
5751: de-reference of pointer-to-const is not readonly so don't set
5752: RTX_UNCHANGING_P.
5753: * explow.c (validize_mem): Use change_address so flags get copied
5754: to new MEM.
5755: * expr.c (convert_move, block_block_{to,from}_reg, emit_move_insn):
5756: Likewise.
5757: (do_tablejump): Set RTX_UNCHANGING_P in MEM accessing address table.
5758: * function.c (optimize_bit_field, instantiate_virtual_regs_1):
5759: Preserve flags when making new MEM.
5760: * loop.c (invariant_p): Memory references to an invariant address
5761: are invariant if RTX_UNCHANGING_P is set.
5762: * recog.c (adj_offsettable_operand): Propagate RTX_UNCHANGING_P
5763: when making new MEM.
5764: * reload.c (find_reloads_toplev): Likewise.
5765: * reload1.c (alter_reg): Stack slot is readonly if pseudo was.
5766: (eliminate_regs): Propagate RTX_UNCHANING_P in new MEM.
5767: * varasm.c (force_const_double_mem): Set RTX_UNCHANGING_P in new MEM.
5768:
5769: Tue Jul 3 21:50:58 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5770:
5771: * expmed.c (expand_and): New function.
5772:
5773: * stmt.c (expand_expr_stmt):
5774: If value is volatile, fetch it and then ignore it.
5775:
5776: * expr.c (expand_expr): Error if variable type is incomplete.
5777:
5778: * c-decl.c (grokdeclarator): Don't warn of incomplete array in typedef.
5779:
5780: Tue Jul 3 18:03:24 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5781:
5782: * fold-const.c (fold): Convert "(1 << foo) & bar" to "(bar >> foo) & 1"
5783: In "(a & 1) != 0", can convert to simply "a & 1".
5784: * combine.c (subst): Convert branch on sign bit to signed comparison
5785: with zero (possibly adding a SUBREG).
5786: Convert ZERO_EXTRACT of the low-order bit of a right shift into a
5787: ZERO_EXTRACT of the proper bit.
5788:
5789: Mon Jul 2 12:07:08 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5790:
5791: * jump.c (jump_optimize): Convert conditionals for storing one
5792: value into a store-flags insn.
5793:
5794: * vax.md (call_pop, call_value_pop): New names for call patterns.
5795: Include the popping explicitly in the rtl.
5796:
5797: * jump.c (jump_optimize): Delete case for condjump followed
5798: by unconditional to same label; was special case of another case.
5799: Switch back to next_active_insn or prev_active_insn in a few cases.
5800:
5801: * function.c (init_function_start): Initialize
5802: frame_pointer_needed to zero.
5803:
5804: * i386.md (tstsf): Clobber reg 0 in SImode.
5805:
5806: Sun Jul 1 14:31:14 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5807:
5808: * jump.c: Use next_real_insn instead of next_active_insn.
5809: Likewise for prev_active_insn. USE insns make a difference!
5810:
5811: * function.c (assign_stack_temp): Use largest alignment if BLKmode.
5812:
5813: * stddef.h: Check __SIZE_T also.
5814:
5815: * toplev.c: Include types.h first.
5816:
5817: * i386.md (trunc*2): Don't allow moving symbolic constant to memory.
5818: Use wider move only for symbolic constant.
5819:
5820: * tm-convex.h (LINK_SPEC): Posix link flags.
5821: * tm-convex.h (STARTFILE_SPEC): Posix start files.
5822: * tm-convex[12].h (CPP_SPEC): Posix defines.
5823: * tm-convex[12].h (LIB_SPEC): Posix libraries.
5824: * tm-conv[12]os7.h: New files.
5825: * config.gcc: use tm-conv*os7 if /usr/include/stdlib.h isn't there.
5826:
5827: * xm-convex.h (S_IFMT, S_IFREG): make visible if hidden for posix.
5828: * xm-convex.h (_PROTO): define to keep 8.0 includes from screwing up.
5829:
5830: * tm-convex.h (ASM_OUTPUT_{FLOAT,DOUBLE}, PRINT_OPERAND):
5831: use %e instead of %#g, which is broken or non-posix.
5832:
5833: * tm-convex.h (current_section_is_text): make extern.
5834: * out-convex.c (current_section_is_text): define here.
5835: * tm-convex.h (OVERRIDE_OPTIONS), out-convex.c (override_options):
5836: useless; remove.
5837: * tm-convex.h (CPP_PREDEFINES): remove parsec, long gone from
5838: system includes.
5839:
5840: Sat Jun 30 14:01:52 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5841:
5842: * c-decl.c (pending_xref_error): Fix typo in arg order.
5843:
5844: * cccp.c (do_include): Mention non-ex system headers for -M.
5845: Guess the directory.
5846: (check_macro_name): Should not be static.
5847:
5848: * rtl.def (inline_header): Add a vector at the end.
5849: * rtl.h (ORIGINAL_ARG_VECTOR): New macro.
5850: (RTVEC_ELT): New macro.
5851: * emit-rtl.c (gen_inline_header_rtx): New argument for that vector.
5852: * integrate.c (save_for_inline): Copy arg rtls if nec, then make
5853: an arg vector to put in the header.
5854: (expand_inline_function): Look in that vector for the rtl.
5855: (copy_parm_decls): Likewise.
5856:
5857: * c-decl.c (duplicate_decls): Warn if function declared external
5858: and later static.
5859:
5860: Fri Jun 29 13:29:24 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5861:
5862: * cccp.c (handle_directive): Supply missing *.
5863:
5864: Thu Jun 28 21:39:43 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5865:
5866: * m68k.md (muldf3 for 68881): Generate fscale if appropriate.
5867: * out-m68k.c (floating_exact_log2): New function.
5868:
5869: Wed Jun 27 17:19:36 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5870:
5871: * c-decl.c (finish_struct): New handling of zero-width bit fields.
5872: Store appropriate data in them like other bit fields.
5873: Don't delete them until after layout.
5874: Don't mess with alignment of following field; set its own.
5875: If PCC_BITFIELD_TYPE_MATTERS, get alignment from type.
5876: * stor-layout.c (layout_record): For zero-width field, if
5877: PCC_BITFIELD_TYPE_MATTERS, alignment does not affect that of structure.
5878: (layout_decl): Don't abort for zero-width if no name.
5879:
5880: * function.c (expand_function_start):
5881: Output ...FUNCTION_BEG note here, after assign_parms.
5882: (init_function_start): Not here.
5883:
5884: * sdbout.c (sdbout_record_type_name): Conditionalize for
5885: SDB_ALLOW_FORWARD_REFERENCES. Don't use typedef names, just tags.
5886: (sdbout_begin_block): Likewise.
5887: (plain_type_1): Likewise. Also move code to output structure size.
5888: (sdbout_symbol): Output the type if not yet output.
5889: Don't output top-level initialized variables yet.
5890: Avoid crash if variable never got any rtl.
5891: Add conditional for SDB_AUTO_NORMALIZE_OFFSET.
5892: (sdbout_toplevel_data, sdbout_queue_anonymous_type):
5893: (sdbout_dequeue_anonymous_type): New functions.
5894: (sdbout_tags): Reverse the list first.
5895: Output enums before other things.
5896: (sdbout_reg_parm): Fake a name if necessary. Use C_REGPARM.
5897: * toplev.c (compile_file): Call sdbout_toplevel_data.
5898:
5899: * c-typeck.c (convert_for_assignment): Disable warnings for pointers
5900: to const and volatile functions.
5901:
5902: * expr.c (expand_expr): Mark variable as used.
5903:
5904: Tue Jun 26 17:05:00 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5905:
5906: * tm-sparc.h (LINK_SPEC): Delete spurious `-'.
5907:
5908: * tm-sun3.h (ASM_OUTPUT_FLOAT_OPERAND): Handle minus zero.
5909: (ASM_OUTPUT_DOUBLE_OPERAND): Likewise.
5910:
5911: * stor-layout.c (layout_type): Check TYPE_NO_FORCE_BLK in union fields.
5912:
5913: Tue Jun 26 01:48:57 1990 Michael Tiemann (tiemann at cygnus.com)
5914:
5915: * tree.c (dump_tree_statistics): Dummy function. To be filled in
5916: later when we decide what tree statistics should be measured.
5917: (build): Now ok to take arguments of length 1. `build1' cannot be
5918: used to allocate 's' tree nodes whcih might have length 1.
5919:
5920: * All GNU C++ files updated to 1.37.2 (alpha 2). NOTE: cplus-decl.c
5921: needs to be fixed to not us RTL. I'm leaving this file in its
5922: current state so that the GNU C++ compiler at least compiles.
5923:
5924: * All SPARC files: modified to use registers %f30 and %f31 as
5925: temporaries for holding floating-point zero. Used to use %f0 and
5926: %f1, which made it impossible to compare function return values with
5927: zero.
5928:
5929: Mon Jun 25 16:54:13 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5930:
5931: * function.c (init_function_start): New args give file/line for first note.
5932: * c-decl.c (store_parm_decls): Pass them.
5933: * integrate.c (output_inline_function): Pass dummies for them.
5934: * final.c (final_start_function): For sdb, don't output a line number,
5935: just set last_linenum.
5936:
5937: * c-parse.y (hash, is_reserved_word): New keyword __label__.
5938:
5939: * stddef.h: Check _T_SIZE as well as _SIZE_T.
5940:
5941: Sun Jun 24 16:09:17 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5942:
5943: * expr.c (expand_expr): Do preserve_temp_slots for TARGET_EXPR.
5944:
5945: Sat Jun 23 09:52:40 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5946:
5947: * genpeep.c (gen_peephole): Ignore USE and CLOBBER insn as well as
5948: NOTE when matching peephole.
5949:
5950: Fri Jun 22 17:40:56 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5951:
5952: * c-typeck.c (process_init_constructor): Set up TREE_PURPOSE
5953: in record constructor elements.
5954:
5955: * cexp.y (exp1): If pedantic, warn about commas.
5956: (tokentab2): Add entries for ++ and --.
5957: (yylex): Error if those are used.
5958:
5959: * c-decl.c (lookup_tag): For wrong kind of type, just set flag.
5960: (shadow_tag): Clear the flag.
5961: (pending_xref_error): Print the error message here if flag set.
5962: * c-parse.y (setspecs): Call that.
5963:
5964: * calls.c (emit_call_1): Use call_pop and call_value_pop insns
5965: to record when the called function pops its args.
5966:
5967: Fri Jun 22 16:43:12 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5968:
5969: * local-alloc.c (wipe_dead_reg): Remove REG_DEAD note for unset reg.
5970:
5971: * tm-sparc.h: Replace FIX_FRAME_POINTER_ADDRESS with
5972: INITIAL_FRAME_POINTER_OFFSET.
5973:
5974: * tm-vax.h (RTX_COSTS): Show shifts are relatively expensive.
5975:
5976: Fri Jun 22 15:05:24 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
5977:
5978: * Makefile.in (GEN): New variable.
5979: (P): New variable.
5980: (cc1, cc1plus, cc1obj): Use $(P).
5981:
5982: * cccp.c (check_macro_name): New subroutine taken from do_define.
5983: (do_define, do_undef): Use this.
5984: (do_undef): Warn if junk follows name.
5985: (handle_directive): Always ignore empty directive.
5986: Warn if \f or \v in directive. Error for malformed directive name.
5987:
5988: * tree.h (BUILT_IN_NEXT_ARG): Define it.
5989: * c-decl.c (init_decl_processing): Declare __builtin_next_arg.
5990: * expr.h (current_function_arg_offset_rtx): Declare it.
5991: * function.c (assign_parms): Set that variable at end.
5992: * expr.c (expand_builtin): Implement __builtin_next_arg.
5993: * stdarg.h (va_start): Use __builtin_next_arg.
5994:
5995: * c-decl.c (grokdeclarator): Check for TRADITIONAL_RETURN_FLOAT.
5996:
5997: Fri Jun 22 07:07:53 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
5998:
5999: * final.c (final_scan_insn): Put label for jump table in same section
6000: (read-only data) as jump table.
6001:
6002: * loop.c: Allow tm.h to define ..._BENEFIT and COPY_PENALTY.
6003:
6004: Wed Jun 20 13:03:53 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6005:
6006: * tm-apollo68.h (FUNCTION_ARG_PADDING): Never pad.
6007: (STACK_BOUNDARY): Make it 32.
6008: (CPP_SPEC): Add spaces. Define _APOLLO_SOURCE if not -ansi.
6009:
6010: * c-common.c (check_case_value): New function.
6011: * c-parse.y (stmt, when parsing case): Use that.
6012: Add new rule for case range.
6013:
6014: * reload1.c (reload_inheritance_insn): New variable.
6015: (reg_reloaded_insn): New variable.
6016: (choose_reload_regs): Update those variables.
6017: (emit_reload_insns): Use them to remove deaths from insns
6018: that used input reloads.
6019: (reload_as_needed): Clear reg_reloaded_insn when necessary.
6020:
6021: * m68k.md (ashlsi3, lshlsi3): Use add to self to shift one bit.
6022:
6023: * dbxout.c (STAB_CODE_TYPE): New macro defined as type for stab codes.
6024: Use in place of enum __stab_debug_code.
6025:
6026: Tue Jun 19 22:56:40 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6027:
6028: * expr.c (expand_increment): For preincrement, don't load value twice:
6029: use TEMP as input to addition.
6030:
6031: Tue Jun 19 06:53:13 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6032:
6033: * explow.c (adjust_stack, anti_adjust_stack): Use expand_binop instead
6034: of gen_{add,sub}2_insn since the latter will abort if the constant is
6035: out of range for the machine.
6036:
6037: Tue Jun 19 00:35:16 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6038:
6039: * local-alloc.c (post_mark_life): Don't decrement DEATH
6040: if it equals BIRTH. Don't ever increment DEATH.
6041:
6042: * varasm.c (output_constructor): Discard non_lvalue_expr, not nop_expr.
6043: Handle missing values. Use field in the tree_list, if any.
6044: (output_addressed_constants): Don't die if value is missing.
6045: * c-typeck.c (process_init_constructor): Handle index and field specs.
6046: * c-parse.y (initlist): Parse them.
6047:
6048: Mon Jun 18 15:58:48 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6049:
6050: * c-decl.c, cplus-decl.c (duplicate_decls):
6051: Types don't "match" if one is error.
6052:
6053: * c-parse.y (label_decl): Use new keyword __label__, not colon.
6054:
6055: * c-parse.gperf (__label__): New keyword.
6056:
6057: * mips.md (probe): Make a single insn, just a memref.
6058:
6059: Mon Jun 18 14:27:55 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6060:
6061: * loop.c (loop_optimize): Set max_luid to last luid + 1, as documented.
6062:
6063: * local-alloc.c (qty_clobber): New variable.
6064: (local_alloc): Allocate and initialize it.
6065: (reg_is_set): Set qty_clobber for a clobber of a pseudo used only
6066: in this insn.
6067: (find_free_reg): Pass qty_clobber to post_mark_life.
6068: (post_mark_life): If CLOBBER if non-zero, register isn't live after
6069: its death insn.
6070:
6071: * integrate.c (expand_inline_function): Don't call try_constants on
6072: an insn that sets CC0 until we have processed the next insn. Then
6073: call it on both. This is because the recognizer for these insns
6074: may want to look at the user of CC0.
6075:
6076: Mon Jun 18 13:25:59 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6077:
6078: * mips.md (ashlqi3, ashlhi3, one_cmplqi2, one_cmplhi2): Deleted.
6079: (ashlsi3, ashrsi3, lshrsi3, neg*, one_cmplsi2): Simplified.
6080: Don't output comments. Use more specific predicates.
6081:
6082: * mips.md (movsf, movdf): Use L, M codes to avoid #ifdef's.
6083: Also simplify and don't output comments.
6084: (anonymous patterns for those insns): Deleted.
6085: (loading floating constant): New patterns added.
6086: (move qi to si pattern): Deleted; ridiculous.
6087: (movdi, movsi, movhi, movqi): No need to check for moving reg to self.
6088:
6089: * mips.md (nop): Use .set noreorder to placate assembler.
6090:
6091: Sun Jun 17 20:01:38 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6092:
6093: * gcc.c (set_spec): Don't use `name' for both old spec and name of
6094: spec. Use new var old_spec for the former use.
6095: Don't use (char *) 0 for null spec; use a null string instead.
6096:
6097: * jump.c (jump_optimize): Don't special-case deleting an ADDR_DIFF_VEC.
6098: Merge code to detect trivial ADDR_VEC and ADDR_DIFF_VEC.
6099: (mark_jump_label): Don't count the use of a vector table label in
6100: ADDR_DIFF_VEC.
6101: (delete_insn): Can now handle ADDR_DIFF_VEC.
6102: (delete_labelref_insn): New function.
6103: (redirect_tablejump): Call new function to delete insn that references
6104: the jump table.
6105:
6106: Sun Jun 17 01:19:26 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6107:
6108: * genemit.c (gen_expand): Don't generate `operands' if size is 0.
6109:
6110: * tm-i860.h (GO_IF_LEGITIMATE_ADDRESS): Displacement must be multiple
6111: of the alignment of the operand.
6112:
6113: * i860.md (signed bit field recognizers): Don't shift by >31 bits.
6114:
6115: * out-i860.c (output_delayed_branch): Pass register properly to
6116: load_opcode.
6117:
6118: * mips.md (general/fp reg move patterns): Use codes L, M, D.
6119: (movdi): Likewise. And don't output useless comments.
6120: Use the assembler temp reg for non-offsettable address.
6121: (movsi, movhi, movqi): Output nothing for move from reg to itself.
6122: Output li to load a constant. Use `move' instead of `add'.
6123: Don't output useless comments.
6124: (load-address pattern): Deleted; handled by addsi3 pattern.
6125:
6126: * mips.md (addsi3, mulsi3): Make both input predicates arith_operand
6127: since they are commutative.
6128: (andsi3, iorsi3, xorsi3): Likewise.
6129:
6130: * tm-mips.h (MOST_SIGNIFICANT_WORD, LEAST_SIGNIFICANT_WORD): New.
6131:
6132: * tm-mips.h (PRINT_OPERAND): New codes D, L, M.
6133: * mips.md (anddi3, iordi3, xordi3): Use earlyclobber to stop overlap.
6134: Use new print code D.
6135:
6136: * mips.md (andsi3, iorsi3, xorsi3): Make predicates more specific.
6137: (andhi3, ..., andqi3, ...): Patterns deleted.
6138: (patterns for nor): New anonymous patterns.
6139: * out-mips.c (uns_arith_operand): New function.
6140:
6141: * mips.md (trunc*, zero_extend*, extend*, fix_trunc*, float*):
6142: Use more specific predicates.
6143:
6144: * mips.md (addhi3, ..., addqi3, ...): Patterns deleted.
6145: (addsi3, subsi3, mulsi3, divsi3): Make predicates more specific.
6146: Delete useless comments from assembler code.
6147: Use more generic op codes rather than special cases such as addiu.
6148: (divmodsi4, udivmodsi4, udivsi3, modsi3, umodsi3): New patterns.
6149: (abssf2, absdf2): New patterns.
6150:
6151: Sun Jun 17 06:56:10 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6152:
6153: * cse.c (COST, rtx_cost, make_regs_eqv): Indicate that hard registers
6154: in fixed_regs are even cheaper than pseudos.
6155:
6156: * function.c (instantiate_virtual_regs_1): If valid, replace PLUS
6157: whose second operand would be zero with its first operand.
6158:
6159: Sun Jun 17 00:17:03 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6160:
6161: * sdbout.c (sdbout_symbol): Get right regno for var-length object.
6162:
6163: * combine.c (simplify_set_cc0_and): Strip SUBREGs, but only if
6164: they truncate. Handle ASHIFTRT like LSHIFTRT.
6165: (try_combine): Call simplify_set_cc0_and in all those cases.
6166: (subst): Handle (zero_extract (subreg (lshift (reg )))).
6167:
6168: Sat Jun 16 23:11:52 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6169:
6170: * tree.c (get_narrower, get_unwidened): Bit field test was backwards.
6171:
6172: Sat Jun 16 19:07:16 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6173:
6174: * fold-const.c (fold): Fix typo in test for distributing binary
6175: operator over conditional and compound expressions.
6176:
6177: * genoutput.c: Remove vestiges of obsolete and never used
6178: INSN_MACHINE_INFO.
6179:
6180: * rtl.def (MATCH_PARALLEL): Add new RTL code.
6181: * genconfig.c (walk_insn_part): Support MATCH_PARALLEL.
6182: * genemit.c (max_operand_1): Likewise.
6183: (gen_exp): Just write operand for MATCH_PARALLEL.
6184: (gen_expand, gen_split): Support MATCH_PARALLEL.
6185: * genrecog.c (walk_rtx): Add support for MATCH_PARALLEL.
6186: * genoutput.c (scan_operands): Suppport MATCH_PARALLEL
6187: like MATCH_OPERATOR.
6188: * genpeep.c (match_rtx): Add code to support MATCH_PARALLEL.
6189: Don't write unnecessary cast to `rtx'.
6190: * genrecog.c (add_to_sequence): Simplify handling of mode.
6191: Support MATCH_PARALLEL.
6192:
6193: * expr.c (move_block_{to,from}_reg): Support load/store multiple.
6194: * function.c (instantiate_virtual_regs_1): If can't substitute
6195: new pseudo for virtual register, try doing the substitution
6196: globally throughout the entire insn. This lets load/store multiple
6197: insns refer to virtual registers in their addresses.
6198:
6199: * genrecog.c (write_split_tree, write_split_subroutine): Deleted.
6200: (break_out_subroutines, write_subroutine, write_tree): Accept
6201: parameters that indicate whether we are making gen_split or gen_recog.
6202: (main): Pass new parameters to break_out_subroutines and write_tree.
6203:
6204: * final.c (final_scan_insn): Process insns that set CC whenever a
6205: REG_CC_STATUS note is found; not only JUMP_INSNs can use CC.
6206: When scanning REG_CC_STATUS insns, set cc_prev_status from cc_status
6207: each time.
6208:
6209: * recog.c (validate_replace_rtx): New function that tries to
6210: replace all occurrences of an object within an insn and see if the
6211: resulting insn is valid.
6212:
6213: Thu Jun 14 06:58:26 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6214:
6215: * optabs.c (emit_no_conflict_block): Write REG_NO_CONFLICT notes all
6216: all insns in the block that modify the output. Write them on the
6217: final insn even if we don't put a REG_EQUAL note there.
6218:
6219: * stmt.c (expand_return): Only distribute return down a conditional
6220: expression if tail recursion is possible in a branch.
6221:
6222: * expr.c (expand_expr): Remove obsolete reference to when we had
6223: a shared structure-value slot.
6224:
6225: * jump.c (get_label_before, get_label_after, follow_jumps): No longer
6226: static.
6227: * rtl.h: Define them.
6228:
6229: Mon Jun 11 17:35:40 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6230:
6231: * loop.c (INSN_LUID): Check for INSN_UID above the area that we
6232: know about.
6233: (loop_optimize): Cannot use INSN_LUID as lhs.
6234: (scan_loop): If first jump is to label made by loop, we can't
6235: tell if it is in range or not, so reject loop.
6236: Reject loop if SCAN_START was an insn previously made by loop since
6237: we won't know its luid.
6238: Only call loop_reg_used_before if argument has known luid.
6239: Mark partial invariant as global if its insn was made by loop.
6240: (ignore_some_movables): Don't assume all invariants have luids.
6241: (strength_reduce): Use no_labels_between_p instead of
6242: labels_in_range_p.
6243: Don't look at luid of insns for which one doesn't exist.
6244: (valid_initial_value_p): Reject initializations in insns whose
6245: luid we don't know.
6246:
6247: * loop.c (product_cheap_p): Put all our rtl into a separate obstack
6248: and free memory from it. If we use current_obstack, we may free
6249: memory allocated by gen_reg_rtx, which must be preserved.
6250:
6251: * c-common.c (rewrite_for_merged_ref): A non-zero one-bit signed field
6252: is -1, not 1.
6253: * c-typeck.c, cplus-typeck.c (build_binary_op_nodefault): If can't
6254: merge comparisons, don't use result of rewrite_for_merged_ref;
6255: comparisons with zero are more efficient.
6256:
6257: * protoize.c (main): Don't declare as extern.
6258:
6259: * c-aux-info.c (gen_aux_info_record): Don't declare extern.
6260:
6261: * genemit (gen_split): Rework to fix numerous bugs and typos.
6262:
6263: * function.c (assign_parms): Avoid generating (PLUS foo (const_int 0)).
6264:
6265: Wed Jun 6 20:03:31 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6266:
6267: * gencodes.c (main): Count a code number for DEFINE_SPLIT.
6268:
6269: * rtlanal.c (note_store): Pass SUBREG of a hard register to function.
6270: (reg_overlap_mentioned_p): Handle receiving SUBREG of hard register.
6271: * integrate.c (mark_stores): Likewise.
6272: * local-alloc.c (reg_is_set, reg_is_born): Likewise.
6273: * reload1.c (mark_not_eliminable): Likewise.
6274:
6275: * loop.c (move_movables): Don't blow up if moving last real insn
6276: in function.
6277:
6278: Wed Jun 6 19:44:04 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6279:
6280: * gcc.c (default_compilers): Pass -traditional before -f*.
6281: Delete -gg option.
6282:
6283: Sun Jun 3 22:44:12 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6284:
6285: * c-decl.c (grokdeclarator): Warn about extern with initializer.
6286:
6287: Sun Jun 3 22:32:19 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6288:
6289: * genrecog.c (main): Don't call write_tree with null if no insns
6290: were in file.
6291:
6292: Sat Jun 2 21:49:24 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6293:
6294: * expr.c (expand_expr, cases ABS_EXPR, MAX_EXPR, MIN_EXPR): Use target
6295: unless zero or safe_from_p rejects it.
6296: (expand_expr, conditional cases): Likewise.
6297:
6298: Sat Jun 2 14:46:18 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6299:
6300: * c-decl.c (grokdeclarator): Handle const and volatile with parm
6301: specified as function type.
6302:
6303: Fri Jun 1 16:13:39 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6304:
6305: * rtl.def (DEFINE_FUNCTION_UNIT): Change specifications so
6306: it now is one per operation type, rather than one per
6307: function unit.
6308: * genattr.c (write_units): Write out new function names and
6309: function unit table structure.
6310: * genattrtab.c (struct function_unit_op): New structure.
6311: (struct function_unit): Updated for new definition of
6312: DEFINE_FUNCTION_UNIT.
6313: (SIMPLIFY_TEST_EXP): New macro to reduce number of function calls
6314: to simplify_test_exp. Replace all call to the function with
6315: uses of the macro.
6316: (check_attr_test, make_alternative_compare): Show that EQ_ATTR with
6317: attribute of "alternative", MATCH_OPERAND, and comparison cases can't
6318: be simplified.
6319: (expand_units, gen_unit, write_function_unit_info): Support new
6320: meaning of DEFINE_FUNCTION_UNIT.
6321: (simplify_test_expr): Rework AND and IOR cases to reduce rescans.
6322: Once an expression has been simplified, set RTX_UNCHANGING_P so
6323: we won't try simplifying it again. Don't do this if INSN_CODE == -2.
6324: (write_attr_set): Don't make a recursive call if we know that
6325: the test we are writing will always be false. Also clean up a bit.
6326: (main): true_rtx and false_rtx don't need to be simplified.
6327: Write gen_attr_... routines before special routines.
6328:
6329: Fri Jun 1 14:17:48 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6330:
6331: * tm-sparc.h (FUNCTION_PROLOGUE, FUNCTION_EPILOGUE):
6332: Round frame size to multiple of STACK_BOUNDARY.
6333:
6334: Fri Jun 1 09:38:51 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6335:
6336: * optabs.c (emit_no_conflict_block): Place REG_NO_CONFLICT notes on
6337: insn that contains REG_EQUAL note instead of insn doing computation.
6338:
6339: * cplus-decl2.c, cplus-lex.c: Rename gettime to get_run_time.
6340: Likewise for my_gettime to my_get_run_time.
6341:
6342: * Makefile.in (varasm.o, calls.o, explow.o, integrate.o, loop.o):
6343: These do not depend on insn-codes.h.
6344: * function.c: Explicitly include insn-codes.h to make it clear that it
6345: is needed for the values of the CODE_FOR_... macros.
6346:
6347: Thu May 31 12:59:28 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6348:
6349: * gnulib2.c (__trampoline): New function.
6350: * Makefile.in (LIB2FUNCS): Compile it.
6351: * tm-m68k.h (TRAMPOLINE_ALIGN): Define it.
6352: * function.c (trampoline_address): Handle extra alignment.
6353: * tm-m68k.h (TRAMPOLINE_TEMPLATE, INITIALIZE_TRAMPOLINE):
6354: Redefine to transfer via __trampoline.
6355: (TRANSFER_FROM_TRAMPOLINE): Define it, for gnulib2.c.
6356:
6357: * fold-const.c (fold): Preserve sign on constant when other terms
6358: cancel (after call to split_tree).
6359:
6360: Thu May 31 12:39:51 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6361:
6362: * expr.c (preexpand_calls): Ignore BLOCK to avoid infinite recursion.
6363:
6364: * function.c (assign_parms): Fix typo getting mode of result.
6365:
6366: * cse.c (cse_basic_block): Don't go past TO if it is target of
6367: followed jump.
6368:
6369: Wed May 30 21:31:16 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6370:
6371: * c-parse.y (fndef, nested_function, notype_nested_function):
6372: Use YYERROR1 instead of YYERROR.
6373: (YYERROR1): New macro.
6374: * cplus-parse.y, objc-parse.y: Likewise.
6375:
6376: Tue May 29 21:53:19 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6377:
6378: * optabs.c (expand_float): Don't use hard reg as intermediate.
6379:
6380: * c-parse.y, objc-parse.y (yylex): Fix typo checking for ERANGE.
6381: * cplus-lex.c (yylex): Copy current code for ERANGE from c-parse.y.
6382:
6383: * toplev.c (get_run_time): Renamed from gettime.
6384:
6385: Mon May 28 15:47:48 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6386:
6387: * expr.c (emit_push_insn): Don't push by pieces if alignment
6388: forces use of small pushes that do problematical padding.
6389:
6390: * tm-sparc.h (SELECT_SECTION): Use TREE_SIDE_EFFECTS.
6391: (STACK_POINTER_OFFSET): Now 68; does not include REG_PARM_STACK_SPACE.
6392: (REG_PARM_STACK_SPACE): Now takes arg and has value.
6393: (ACCUMULATE_OUTGOING_ARGS): Define this.
6394: (FUNCTION_PROLOGUE, FUNCTION_EPILOGUE, EXIT_IGNORE_STACK): Use
6395: current_function_outgoing_args_size, not ..._pretend_...
6396: (INITIALIZE_TRAMPOLINE): Use size_int.
6397:
6398: * varasm.c (make_decl_rtl, make_function_rtl): Run ENCODE_SEGMENT_INFO
6399: if it is defined.
6400:
6401: * tree.def (BIND_EXPR): Add operand, which holds the BLOCK.
6402: * expr.c (expand_expr): When BIND_EXPR is seen, flag the BLOCK.
6403: * dbxout.c (dbxout_block): Test the flag in the BLOCK.
6404: * sdbout.c (sdbout_block): Likewise.
6405: * symout.c (symout_function): Likewise.
6406: * c-parse.y (stmt expr rule): Corresponding change.
6407:
6408: Sun May 27 20:53:16 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6409:
6410: * caller-save.c (save_call_clobbered_regs): Correctly mark registers
6411: live for multi-word pseudos.
6412:
6413: Sat May 26 13:42:04 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6414:
6415: * sdbout.c (sdb_begin_function_line): Now -1 if not in use.
6416: (sdbout_end_function): Set it to -1.
6417:
6418: * tree.def: Rename EXIT_STMT to EXIT_EXPR and likewise for LOOP_STMT.
6419: Also LET_STMT to BIND_EXPR, and GOTO_STMT, LABEL_STMT, RETURN_STMT
6420: to ..._EXPR.
6421: (struct tree_stmt, struct tree_if_stmt, struct tree_bind_stmt):
6422: (struct tree_case_stmt): Types deleted.
6423:
6424: * tree.c (make_node, copy_node): Treat 's' like 'e' for size of node.
6425: In make_node, make BLOCK and BIND_EXPR savable.
6426: * expr.c (expand_expr): Rename, and use TREE_OPERAND to get body.
6427: * cplus-init.c (build_vec_delete): Likewise, and build appropriately.
6428: * print-tree.c (print_node): No special handling for these and IF_STMT.
6429: * stmt.c (warn_if_unused_value): Likewise.
6430:
6431: * tree.def (BLOCK): New tree code for binding blocks.
6432: * tree.h (BLOCK_VARS, BLOCK_TYPE_TAGS):
6433: (BLOCK_SUBBLOCKS, BLOCK_SUPERCONTEXT): Renamed from STMT_...
6434: (STMT_...): Except for those, all deleted.
6435: (BLOCK_CONTROLLER): Points to corresponding BIND_EXPR, if any.
6436: (BLOCK_CHAIN): New macro.
6437: * tree.c (build_block): Renamed from build_let.
6438: (decl_type_context, decl_function_context): Corresponding change.
6439: * print-tree.c (print_node): Likewise.
6440: * c-decl.c, cplus-decl.c (poplevel): Likewise.
6441: * integrate.c (copy_decl_tree): Likewise.
6442: * function.c (setjmp_protect, uninitialized_vars_warning):
6443: (instantiate_decls_1): Likewise.
6444: * c-parse.y, cplus-parse.y, objc-parse.y (stmt expr rule): Likewise.
6445: * dbxout.c (dbxout_block): Expect only BLOCKs in this tree.
6446: Ignore those with controllers that are not marked used.
6447: * sdbout.c (sdbout_block): Likewise.
6448: * symout.c (symout_function): Likewise.
6449:
6450: * tree.def: Delete IF_STMT, COMPOUND_STMT, WITH_STMT.
6451: * expr.c (expand_expr): Delete handling of IF_STMT.
6452: * tree.c (build_if, build_loop, build_case, build_goto): Deleted.
6453: (build_expr_stmt, build_asm_stmt, build_return, build_exit): Likewise.
6454: (build_compound): Likewise.
6455: * cplus-init.c (build_vec_delete): Use COND_EXPR instead of IF_STMT.
6456:
6457: Sat May 26 13:23:12 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6458:
6459: * calls.c (struct arg_data): Add new fields slot_offset and stack_slot.
6460: (expand_call): Compute both location of start of stack slot and the
6461: place in the stack slot where the first byte of the argument will be
6462: placed.
6463: Use stack_slot when loading a BLKmode object into registers.
6464: When loading into registers, don't check reg_parm_seen, just look
6465: at args[i].reg.
6466: (expand_call, store_one_arg): Save and restore stack slot starting
6467: from beginning of slot, not begining location where arg is stored.
6468: (store_one_arg): After calling emit_push_insn, argument is really
6469: at arg->stack_slot instead of arg->stack because if we want to
6470: load it into registers, we include any padding.
6471:
6472: Sat May 26 01:37:27 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6473:
6474: * tree.h (struct tree_type): Rename sep=>minval, sep_unit=>precision.
6475:
6476: * tree.c (init_obstacks, init_tree_codes): init_tree split in two.
6477: * toplev.c (compike_file): Call them.
6478:
6479: Fri May 25 16:40:45 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6480:
6481: * stor-layout.c (layout_record): Nuke excess set of DECL_FIELD_BITPOS.
6482: * varasm.c (output_constructor): Bitpos is zero for array (field == 0).
6483:
6484: Fri May 25 00:48:45 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6485:
6486: * final.c (final_scan_insn): Restore inadvertent deletion in change
6487: of May 24th.
6488:
6489: Fri May 25 00:13:12 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6490:
6491: * print-tree.c (print_node): Print some missing fields for decls.
6492: (print_node_brief): Always print value of integer or real constant.
6493:
6494: Thu May 24 21:28:36 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6495:
6496: * fold-const.c (real_zerop): Function deleted; was redundant.
6497:
6498: * tree.h (DECL_OFFSET): Macro deleted.
6499: (struct tree_decl): Field deleted.
6500:
6501: * c-typeck.c (build_unary_op): For ADDR_EXPR of COMPONENT_REF,
6502: use DECL_FIELD_BITPOS and handle non-constant values.
6503: * stor-layout.c (layout_record, layout_union): Likewise.
6504: * expr.c (expand_assignment, store_constructor, expand_expr): Likewise.
6505: * dbxout.c (dbxout_type): Likewise.
6506: * sdbout.c (sdbout_one_type): Likewise.
6507: * c-common.c (merge_component_comparisons, make_merged_ref): Likewise.
6508: * print-tree.c (print_node): Likewise.
6509: * varasm.c (decode_addr_const, output_constructor): Likewise.
6510: * objc-actions.c (build_ivar_list_initializer): Likewise.
6511: * cplus-typeck.c (build_component_addr): Likewise.
6512: And preserve TREE_CONSTANT flag.
6513: (unary_complex_lvalue): Likewise.
6514:
6515: * tree.h (DECL_FUNCTION_CODE): Use the frame_size field, not `offset'.
6516: Now meaningful only if function is built in.
6517: (DECL_BUILT_IN): New flag macro.
6518: * c-decl.c (builtin_function): Set the flag.
6519: (pushdecl, duplicate_decls): Use and set it.
6520: * c-typeck.c, cplus-typeck.c (build_function_call): Test it.
6521: * cplus-decl.c (define_function): Set the flag.
6522: (pushdecl, duplicate_decls): Use and set it.
6523: * expr.c (expand_expr, preexpand_calls): Test it.
6524:
6525: * tree.h (DECL_INCOMING_RTL): New macro.
6526: * function.c (assign_parms): Set up that field.
6527: * dbxout.c (dbxout_parms, dbxout_reg_parms): Don't try to use
6528: DECL_OFFSET for a parm; it is not set. Use DECL_INCOMING_RTL.
6529: (PARM_PASSED_IN_MEMORY): New macro.
6530: * sdbout.c (sdbout_parms, sdbout_reg_parms): Likewise.
6531: (PARM_PASSED_IN_MEMORY): New macro.
6532:
6533: * cccp.c (macarg): When popping frame, free via free_ptr, not buf.
6534:
6535: Thu May 24 18:04:06 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6536:
6537: * emit-rtl.c (next_cc0_user): New function.
6538: * recog.c (next_insn_tests_no_inequality): Use next_cc0_user.
6539: * rtl.h: Define next_cc0_user.
6540:
6541: * cse.c (cse_insn): Make canon_reg calls in separate loop over the
6542: SETs to avoid problems when MATCH_DUPs are present in an insn
6543: pattern.
6544: Don't canon CLOBBER in PARALLEL. Instead, canon MEM of CLOBBER,
6545: both within a PARALLEL and standalone. Also, call note_mem_clobbered
6546: only for MEM.
6547:
6548: Thu May 24 13:08:25 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6549:
6550: * gnulib2.c (__negdi2): Make this inline for other functions.
6551:
6552: Thu May 24 07:15:04 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6553:
6554: * jump.c (no_labels_between_p, prev_real_insn, next_real_insn):
6555: (prev_active_insn, next_active_insn, next_label): Delete from here.
6556: * rtlanal.c (no_labels_between_p): Put here.
6557: * emit-rtl.c (prev_real_insn, next_real_insn, prev_active_insn):
6558: (next_active_insn, next_label): Add to here.
6559:
6560: * c-common.c: Define NULL so NULL_TREE macro will work.
6561:
6562: * cplus-typeck.c (common_parms): Use oballoc and obfree to
6563: avoid external current_obstack.
6564:
6565: * cse.c (fold_cc0, cse_insn): Use HASH macro instead of call to
6566: canon_hash.
6567: (cse_insn): When just recording jump insn, show it doesn't set CC0
6568: and set it as previous insn.
6569:
6570: * genoutput.c (gen_split): Fix typo in comment.
6571:
6572: * reorg.c: No longer need define next_label and next_real_insn as
6573: extern.
6574:
6575: * toplev.c (rest_of_compilation): Use DELAY_SLOTS instead of
6576: obsolete HAVE_DELAYED_BRANCH; include insn-attr.h.
6577:
6578: * final.c (dbr_sequence_length): Now present #ifdef DELAYED_BRANCHES.
6579: Eliminate references to obsolete DBR_INSN_SLOTS.
6580: (get_attr_length): Support ADJUST_INSN_LENGTH.
6581: (get_attr_length, shorten_branches): Handle a SEQUENCE built for an
6582: insn with filled delay slots.
6583: (final_scan_insn): Avoid unnecessary call to recog_memoized.
6584: Use validate_change instead of assuming replacement of CC0 by
6585: STORE_FLAG_VALUE or const0_rtx is valid.
6586:
6587: Wed May 23 16:32:32 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6588:
6589: * out-m68k.c, out-alliant.c (output_btst):
6590: Use next_insn_tests_no_inequality, not next_insns_test_...
6591: * recog.c (next_insns_test_no_inequality): Function deleted.
6592:
6593: Wed May 23 13:26:57 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6594:
6595: * expmed.c (store_bit_field): Don't bother making a SUBREG when we
6596: call ourself recursively; the recursive call will just strip it off.
6597:
6598: * reorg.c: Include insn-attr.h before testing DELAY_SLOTS.
6599: (emit_delay_sequence): Assign new INSN_UID to the SEQUENCE.
6600: Chain insns through the sequence via NEXT_INSN and PREV_INSN.
6601: * emit-rtl.c (next_insn, prev_insn): Go inside a SEQUENCE to
6602: find the next or previous insn.
6603: (make_insn_raw): No longer static.
6604: * rtl.h: Define make_insn_raw, prev_active_insn, next_active_insn,
6605: next_insn, and previous_insn.
6606:
6607: * genattrtab.c (write_eligible_delay): Always use "*delay_type";
6608: annuling only applies to candidate insn, not insn needing slot.
6609:
6610: * tree.c (init_tree): tree_node_counter doesn't exist any more.
6611: (make_node, copy_node, make_tree_vec, build1): No longer set TREE_UID.
6612:
6613: Wed May 23 00:48:57 1990 Michael Tiemann (tiemann at cygnus.com)
6614:
6615: * genemit.c, genextract.c: Add support for MATCH_OP_DUP and
6616: DEFINE_SPLIT.
6617:
6618: * cplus-init.c (build_delete): TREE_SIDE_EFFECTS can be
6619: nonzero when address to be deleted is a cast of something
6620: with side-effects (like a call).
6621: (build_vec_delete): Simplify code now that `make_node' does the
6622: right thing for _STMT nodes.
6623:
6624: Tue May 22 22:59:43 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6625:
6626: * cse.c (cse_end_basic_block): Don't crash if NEXT_INSN of
6627: our branch target is zero.
6628: Don't skip scanning first insn after destination label of branch.
6629:
6630: * expr.c (emit_move_insn): Abort if modes differ.
6631: (expand_expr, comparison cases): Use TMODE when convenient.
6632: (expand_expr, case COND): When optimizing (C ? 1 : 0), ensure
6633: we return a result of the correct mode.
6634:
6635: * integrate.c (expand_inline_function): Can't call try_constants for
6636: JUMP_INSN since we may have changed RETURN to jump.
6637:
6638: Tue May 22 22:40:22 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6639:
6640: * tree.h (struct tree_common): Delete field `uid'.
6641: (TREE_UID): Macro deleted.
6642:
6643: * c-decl.c (finish_decl): Discard any variable sizes in the decl.
6644:
6645: * calls.c (expand_call): When making reg_notes for const function,
6646: don't test is_const twice, and take account of order of pushing.
6647:
6648: Tue May 22 21:41:48 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6649:
6650: * reload1.c (eliminate_regs): Ensure we process pseudo that is first
6651: operand of PLUS.
6652:
6653: * expmed.c (store_bit_field): When stripping a SUBREG, adjust the
6654: bit position to correspond to the change in modes.
6655:
6656: * cse.c (rtx_cost): Use COSTS_N_INSNS macro.
6657:
6658: * cse.c (qty_comparison_*): New vars.
6659: (new_basic_block): Initialize qty_comparison_code.
6660: (fold_rtx): If we see a comparison, check if we have seen the
6661: same comparison before. If so, we know the result.
6662: (record_jump_equiv): Save the comparison being passed in the
6663: qty_comparison_* variables for possible later use by fold_rtx.
6664: (cse_insn): If the current insn doesn't reference cc0, but the
6665: previous insn sets it, delete the previous insn; presumably we
6666: used to test it.
6667: (cse_basic_block): Allocate new qty_comparison_* vars.
6668:
6669: * reload1.c (eliminate_regs): Second arg is now mode of enclosing
6670: MEM, if any, rather than simply flag indicating inside MEM.
6671: Use this mode to determine amount that, e.g., PRE_DEC adjusts by.
6672:
6673: * reload1.c (reload): Set regs_ever_live for a register that couldn't
6674: be eliminated.
6675: * final.c (only_leaf_regs_used): Don't do it here.
6676:
6677: * reorg.c: Eliminate obsolete macros *_REORG_FUNCTION.
6678: Entire file is conditional on #ifdef DELAY_SLOTS.
6679:
6680: * Makefile.in: Use reorg.c instead of dbranch.c.
6681:
6682: Tue May 22 20:40:30 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6683:
6684: * c-decl.c (complete_array_type): Get string elt size in bytes.
6685:
6686: Tue May 22 00:42:07 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6687:
6688: * toplev.c (rest_of_compilation): Turn off VERBOSE arg to thread_jumps.
6689:
6690: * objc-parse.y, objc-actions.c: Replaces uses of build with build1
6691: when being used for 1-operand nodes.
6692:
6693: Mon May 21 23:59:21 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6694:
6695: * global-alloc.c (hard_reg_full_preferences): New variable.
6696: (global_alloc): Allocate and initialize it.
6697: (prune_preferences): Include in regs_someone_prefers all words
6698: of multi-word items that have preferences. Don't includes registers
6699: we also prefer unless they are prefered by an allocno that needs
6700: more registers.
6701: (set_preference): Set hard_reg_full_preferences also.
6702:
6703: Mon May 21 21:36:29 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6704:
6705: * tree.c (make_node): All ..._STMT nodes have side effects, type void.
6706:
6707: Mon May 21 16:03:23 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6708:
6709: * integrate.c (expand_inline_function): Set insns_at_start before
6710: processing parameters since it might be needed during that processing.
6711: Set RTX_INTEGRATED_P in all insns emitted, including labels and
6712: barriers.
6713: Ensure COPY is set correctly when replacing RETURN and avoid
6714: duplicate barriers by calling emit_jump_insn instead of emit_jump.
6715: Call note_stores for JUMP_INSNs and CALL_INSNs in case they have
6716: side-effects we care about.
6717: (copy_rtx_and_substitute): Convert (use (subreg FOO)) to (use FOO).
6718: (subst_constants): Don't crash if we see a SUBREG replaced by a
6719: REG or vice versa; we have no work to do in that case.
6720: Fix typo in case MULT.
6721:
6722: * recog.c (constrain_operands): Call reg_fits_class_p with original
6723: mode of OP, not mode of SUBREG_REG (op) when OP is SUBREG.
6724:
6725: Mon May 21 14:25:14 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6726:
6727: * expmed.c (extract_bit_field): Use class of TMODE for simple reg case.
6728:
6729: * flags.h (flag_pic): Declare it.
6730: * tree.h (mode_for_size): Declare it.
6731: * c-tree.h (merge_component_comparisons): Declare it.
6732:
6733: Mon May 21 07:27:12 1990 Michael Tiemann (tiemann at cygnus.com)
6734:
6735: * jump.c (thread_jumps): New function to optimize the case where one
6736: conditional jump jumps to another testing the same condition. This
6737: function usefully optimzies code both before common subexpression
6738: elimination (where it "finds" common subexpressions that cse won't
6739: find) and after loop optimization (where the loop optimizer
6740: introduces new conditional jumps after rearranging loops).
6741: (rtx_equal_for_thread_p): cheaply builds equivalences between
6742: register so that jump threading can be effectively run before cse.
6743:
6744: * emit-rtl.c (init_emit_once): Initialize PIC_OFFSET_TABLE_RTX if
6745: PIC_OFFSET_TABLE_REGNUM is defined.
6746:
6747: * tree.c (build,build1,build_nt): Set TREE_RAISES in addition to
6748: TREE_SIDE_EFFECTS.
6749: ({temp,saveable,perm}_tree_cons): Call `tree_cons' with arguments
6750: instead of calling `make_node' directly. Eventually, `tree_cons'
6751: could be faster than `make_node'.
6752: (get_identifier): Use `bcmp' instead of `strcmp', since it's
6753: faster. Also, test the first letter of each string before calling
6754: the string comparison function.
6755:
6756: * toplev.c: Add new flags FLAG_THREAD_JUMPS and FLAG_PIC. The
6757: former gives better common sub-expression elimination while the
6758: latter tells the compiler to emit position-independent code.
6759: (rest_of_compilation): Thread jumps if requested.
6760:
6761: * stor-layout.c (layout_{record,union}): For loop bodies meant only
6762: for FIELD_DECLs, make sure we have a FIELD_DECL before proceeding.
6763:
6764: * stmt.c (expand_end_case): Use ADDR_DIFF_VEC if FLAG_PIC is
6765: nonzero.
6766: @@ NOTE: This would look a lot nicer if CASE_VECTOR_PC_RELATIVE were
6767: an expression (like zero/nonzero) instead of soley a #define.
6768: (fixup_cleanups): If cleanups emitted no code, don't call
6769: `reorder_insns'.
6770: (expand_decl_cleanup): Return 0 in case we are not in a block
6771: (but instead at top-level).
6772:
6773: * stack.h: New GNU C++ file.
6774:
6775: * rtl.c (REG_NOTE_NAMES): Add REG_CC_STATUS and REG_TAIL_CALL.
6776: * rtl.h: Ditto. Also make external declaration of
6777: pic_offset_table_rtx.
6778: * rtl.def: Add the following new RTL codes: DEFINE_SPLIT,
6779: MATCH_OP_DUP, LO_SUM and HIGH.
6780:
6781: * reorg.c: New file. Performs instruction reorganizations
6782: (primarily branch scheduling) after register allocation.
6783:
6784: * local-alloc.c (local_alloc): If defined, execute
6785: ORDER_REGS_FOR_LOCAL_ALLOC.
6786:
6787: * genrecog.c (struct decision): Extended to handle DEFINE_SPLITs.
6788: (write_tree): Split into three subroutines: `write_tree_1' which
6789: does the main work, `write_tree' which does the original job, and
6790: `write_split_tree' which builds the recognizer for insn splitting.
6791: (add_to_sequence): Handle MATCH_OP_DUP.
6792: (main): Bui.Build both insn->insn_code and insn->insn_list
6793: recognizers.
6794: Also, fixed comment at the top of the file.
6795: * genpeep.c (main): Handle DEFINE_SPLIT.
6796: (match_rtx): Handle MATCH_OP_DUP.
6797: * genoutput.c (main): Handle DEFINE_SPLIT.
6798: * genconfig.c (main): Handle DEFINE_SPLIT and MATCH_OP_DUP.
6799: * genattrtab.c (main): Handle DEFINE_SPLIT.
6800:
6801: * fold-const.c (various places): Use `build1' constructor instead of
6802: `build' constructor whenever possible.
6803:
6804: * final.c (final_scan_insn): If we know the status of the condition
6805: codes at a particular JUMP_INSN (by dint of the fact that it has a
6806: REG_CC_STATUS note), set CC_STATUS to reflect that value.
6807: (only_leaf_regs_used): @@ For some reason the frame pointer register
6808: is not marked live, even when it is. If FRAME_POINTER_NEEDED is
6809: nonzero, set REGS_EVER_LIVE[FRAME_POINTER_REGNUM] to 1.
6810:
6811: * expr.c (emit_library_call): Round ARGS_SIZE.CONSTANT up, not down.
6812: Use new macro MAX to accomplish this.
6813: (safe_from_p): Don't check that EXP is nonzero. Instead, make
6814: caller check (only in one place) that argument to `safe_from_p' is
6815: non-zero.
6816: (expand_expr): In COND_EXPR case, make sure that the predicate is
6817: safe from the two conditions. Lossage occured in a construct of the
6818: form (c = c < 0 ? d : -d).
6819:
6820: * explow.c (plus_constant): Handle LO_SUM rtl.
6821:
6822: * c-typeck.c (build_binary_op_nodefault): If optimizing, try merging
6823: component refs and/or comparisons into larger operations.
6824:
6825: * c-common.c (rewrite_for_merged_ref): New function. Canonicallizes
6826: expressions to be recognizable as candidates for merged
6827: COMPONENT_REF operations.
6828: (make_merged_ref): Builds custom FIELD_DECLs for accessing multiple
6829: bits in a byte simultaneously.
6830: (merge_component_comparisons): Optimize COMPONENT_REFs in
6831: expressions that look like (x.p == y.p && x.q == y.q) or
6832: (x.p != y.p || x.q != y.q). Also optimize (x.p == c1 && x.q == c2),
6833: where C1 and C2 are known constants.
6834:
6835: * c-lang.c (print_lang_statistics): Added new hook function.
6836: Currently does nothing for C.
6837:
6838: * c-convert.c: Use `build1' constructor instead of `build'
6839: constructor whenever possible.
6840:
6841: * cplus-typeck.c (build_binary_op_nodefault): Call this function for
6842: better applicability of the merged component ref optimization.
6843: Also, add more recognized cases.
6844:
6845: * cplus-type2.c (merge_component_comparisons): Code improved, and
6846: moved to c-common.c.
6847:
6848: * cplus-parse.y (operator_name): Recognize `operator,'.
6849: (expr): On parsing ',', call `build_x_compound_expr' instead of
6850: `build_compound_expr'.
6851: (various places): Call `note_decl_list_got_semicolon' instead of
6852: `note_decl_got_semicolon' where object in question is a list instead
6853: of a type.
6854: (component_declarator0): Set CURRENT_DECLSPECS from the bitfield
6855: type.
6856:
6857: * cplus-method.c (hack_wrapper): Rename parameter TYPE to CNAME,
6858: since it is a type name we pass in, not a type.
6859:
6860: * cplus-lex.c (opname_tab): Add `operator,'.
6861: (note_decl_list_got_semicolon): Make notation that a list of
6862: declarations should be considered as having "gotten a semicolon".
6863: (extract_interface_info,interface_strcmp): Commented.
6864:
6865: * cplus-init.c (build_delete): Rest of changes to reimplement new
6866: destructor mechanism.
6867: (build_vbase_delete): Fix bug whereby arrays of length 0 and 1 were
6868: not being correctly handled. Also, where elsements were not being
6869: deleted. Use new destrouct calling convention.
6870: (various places): Change TYPE_HAS_CONSTRUCTOR to
6871: TREE_HAS_CONSTRUCTOR where appropriate.
6872:
6873: * cplus-expr.c (cplus_expand_expr): Use `emit_block_move' to copy
6874: data from RETURN_TARGET to CALL_TARGET in case they do not line up
6875: normally.
6876:
6877: * cplus-decl2.c (finish_file): No need to call `build_vbase_delete'
6878: on top-level objects anymore, since destructors now do the right
6879: thing.
6880:
6881: * cplus-decl.c (finish_function): Implement new destructor
6882: mechanism: destroy virtual baseclass objects if (in$charge & 2) is
6883: nonzero. Deallocate if (in$charge & 1) is nonzero.
6884:
6885: * cplus-cvt.c (build_up_reference): Use TREE_HAS_CONSTRUCTOR, not
6886: TYPE_HAS_CONSTRUCTOR on non-TYPE tree nodes.
6887: (build_up_reference): Only build up references between compatible
6888: types. I.e., don't build a char& to an int object.
6889: (convert_to_aggr): Set the TREE_SIDE_EFFECTS bit if the result is a
6890: CALL_EXPR.
6891:
6892: * cplus-class.c (build_vbase_path): Recover from bad parse errors.
6893: (build_method_call): Implement new ctor/dtor semantics to allow
6894: differentiation between tearing an object down and deallocating it.
6895: This also means that ctors and dtors can now aviod going through the
6896: virtual function table mechanism as they construct/destruct their
6897: objects.
6898:
6899: * ALL GNU C++ files: Use new macro IDENTIFIER_TYPE_VALUE to lookup
6900: type value of an identifier. Also implement related macros
6901: IDENTIFIER_HAS_TYPE_VALUE, and IDENTIFIER_TYPEDECL_VALUE.
6902:
6903: * cplus-cadillac.c (cadillac_switch_source): Change Prototype
6904: declaration to non-prototype declaration.
6905: (readable_p): Ditto.
6906:
6907: Sun May 20 20:23:39 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6908:
6909: * c-typeck.c (c_sizeof): For incomplete type, warn and return 0.
6910: (c_sizeof): Similar.
6911:
6912: Sun May 20 17:20:48 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6913:
6914: * emit-rtl.c (gen_highpart): Support SUBREG like gen_lowpart.
6915:
6916: Sun May 20 16:59:17 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
6917:
6918: * c-typeck.c (build_c_cast): Warn about pointer-integer casts
6919: where size differs.
6920:
6921: * stor-layout.c (layout_type): Multi-word field doesn't force BLKmode.
6922:
6923: * expmed.c (extract_bit_field): Use mode_for_size for lsb-aligned
6924: fields in regs. No longer knows explicit modes for this.
6925:
6926: Sun May 20 15:12:38 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
6927:
6928: * Makefile.in: (reload1.o): Now depends on output.h.
6929:
6930: * calls.c (expand_call): No need to set frame_pointer_needed.
6931:
6932: * emit-rtl.c (gen_rtx): If reference to sp, ap, or fp, use
6933: appropriate already-made rtx (e.g., stack_pointer_rtx).
6934:
6935: * expr.c (expand_builtin, case BUILT_IN_ALLOCA): No need to set
6936: frame_pointer_needed.
6937:
6938: * final.c (final_start_function): No longer round size of frame here.
6939: (final_scan_insn): Call constrain_operands with new operand.
6940:
6941: * flow.c (life_analysis): Change test on whether sp is live or
6942: not to depend on FRAME_POINTER_REQUIRED and -fomit-frame-pointer.
6943: (This code may not be relevant any more.)
6944:
6945: * function.c (push_function_context, pop_function_context): No need
6946: to save and restore frame_pointer_needed.
6947: (assign_{outer_,}stack_local): No need to set frame_pointer_needed.
6948: (assign_parms): Likewise.
6949: (init_function_start): Don't initialize frame_pointer_needed here.
6950:
6951: * function.h (frame_pointer_needed): Deleted.
6952:
6953: * genattrtab.c (write_attr_case): Write call to constrain_operands
6954: with new second argument (reload_completed).
6955:
6956: * global-alloc.c (global_alloc): Don't left fp be allocated if we
6957: already know we can't eliminate it.
6958: (find_reg): Argument LOSERS is now a HARD_REG_SET instead of an array.
6959: Precompute HARD_REG_SETs before loop over registers to speed up
6960: allocation.
6961: (retry_global_alloc): Argument FORBIDDEN_REGS is now a HARD_REG_SET.
6962: (check_frame_pointer_required): Deleted; no longer needed.
6963:
6964: * integrate.c (save_for_inline, output_inline_function): No longer
6965: need to save and restore frame_pointer_needed.
6966:
6967: * local-alloc.c (block_alloc): No longer have to worry that having
6968: a stack variable might cause a frame pointer to be needed when it
6969: might otherwise not be.
6970: (find_free_reg): Don't allocate into registers that may be eliminated
6971: later even if they are not FIXED_REGS.
6972:
6973: * output.h: Define reload_completed.
6974:
6975: * recog.c (constrain_operands): Add new argument, STRICT. If zero
6976: and the constraints could not be matched, try again with a less
6977: strict view (i.e., assume that reload will fix those things that
6978: it can). This allows attribute values to be obtained prior to
6979: reload.
6980: Don't call alter_subreg or assume it has been called. Instead,
6981: look inside SUBREGs.
6982:
6983: * reload.c (find_reloads_address{,_1}): Handle an address that
6984: is a MEM; it may have been produced by register elimination.
6985: (find_reloads_address): sp can also be the base register for a
6986: stack slot.
6987: (form_sum): No longer static.
6988:
6989: * reload1.c: Rewrite code that performs frame pointer elimination. Do
6990: it during reload to ensure that all addresses and operands remain
6991: valid; also generalize to support more than one pair of eliminations.
6992: (reg_equiv_stack_slot, bad_spill_regs): New vars.
6993: (forbidden_regs): Now a HARD_REG_SET.
6994: (struct elim_table): New structure to describe register eliminations.
6995: (reload): Start scanning registers after virtual registers.
6996: Initialize reg_equiv_stack_slot for each register. Compute
6997: reg_equiv_{mem,address} during register scan only if not eliminating
6998: registers.
6999: Compute initial default value of frame_pointer_needed.
7000: Round frame size to BIGGEST_ALIGNMENT.
7001: Create obstack for scratch rtl created by register elmination.
7002: Initialize elimination table and spill registers that we know can't
7003: be eliminated.
7004: On each scan of the insns: Reset all elimination entries to initial
7005: offsets, compute reg_equiv_{mem,address}, and see if any potentially
7006: eliminable register changed status.
7007: Try to eliminate registers from each insn unless we know that none
7008: can be eliminated.
7009: Don't complete groups for spill registers from registers that
7010: shouldn't be used as spill registers.
7011: Call reload_as_needed if register eliminations can be done, even if
7012: no reloads are needed.
7013: (new_spill_reg): Don't allow spilling an eliminable register.
7014: Don't set forbidden_regs here.
7015: Indicate something changed if a register that wasn't ever used before
7016: was made a spill register.
7017: (eliminate_frame_pointer, {alter,fix}_frame_pointer_address): Deleted.
7018: (delete_dead_insn): New function.
7019: (alter_reg): Call it.
7020: Always set reg_equiv_stack_slot; if not eliminating registers, also
7021: set reg_equiv_{mem,address}.
7022: (eliminate_regs, eliminate_regs_in_insn): New functions.
7023: (spill_hard_reg): Add new argument, CANT_ELIMINATE.
7024: Set bit for register being spilled in forbidden_regs.
7025: Use new argument instead of seeing if we are spilling fp.
7026: No longer need to have frame pointer just because a reg needs a
7027: stack slot.
7028: (order_regs_for_reload): Set bad_spill_regs to contain those registers
7029: that can't be used for spill registers.
7030: Consider any eliminable register as bad to use as a spill register.
7031: Rework initialization of potential_reload_regs.
7032: (reload_as_needed): Handle register elimination in a similar manner
7033: as function reload.
7034: (gen_input_reload): When generating a reload for a PLUS, first try to
7035: use a three-operand add insn. If that fails, emit two two-operand
7036: insns.
7037:
7038: * rtl.h (FUNCTION_FLAGS_FRAME_POINTER_NEEDED): Deleted; all others
7039: renumbered.
7040:
7041: * stmt.c (expand_decl): No longer have to set frame_pointer_needed
7042: for variable-sized decl.
7043:
7044: * stupid.c (stupid_find_reg): Don't try to allocate an eliminable
7045: register.
7046:
7047: * tm-vax.h (INITIAL_FRAME_POINTER_OFFSET): Add definition.
7048:
7049: * recog.c (next_insn_tests_no_inequality): If no next insn, return 0.
7050:
7051: * print-tree.c (print_node): Set length for TREE_VEC.
7052:
7053: * calls.c (store_one_arg): Set arg->value to location where argument
7054: was placed (either register or stack).
7055:
7056: * recog.c: Needs flags.h (for flag_pretend_float):
7057: * Makefile.in (recog.o): Likewise.
7058:
7059: * expr.c (convert_move): Add missing RETURN statements.
7060:
7061: Sat May 19 14:26:31 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7062:
7063: * expr.c (expand_expr, case EXIT_STMT): Return rather than falling
7064: out of switch statement (and into `binop').
7065:
7066: * cse.c (cse_insn): Allow conditional branches to be turned into
7067: noops when the condition is known false by not calling validate_change.
7068:
7069: * cse.c (fold_rtx): Add LABEL_REF to list of fast RTL codes.
7070:
7071: Sat May 19 12:41:44 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
7072:
7073: * tm-i386gas.h (ASM_OUTPUT_ALIGN): Use log as arg to .align.
7074: (ASM_OUTPUT_ALIGN_CODE): Likewise.
7075:
7076: * gcc.c (default_compilers): For .cc, pass -g* to cc1.
7077:
7078: Sat May 19 06:51:26 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7079:
7080: * tree.c (push_obstacks, pop_obstacks): Put struct obstack_stack
7081: in obstack instead of using xmalloc/free.
7082: (init_tree): Initialize new obstack for {push,pop}_obstacks.
7083:
7084: * tree.c (simple_cst_list_equal): No longer static.
7085:
7086: Fri May 18 19:38:01 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7087:
7088: * expr.h (MUST_PASS_IN_STACK): Refine test for case where padding
7089: requirement prohibits passing in register.
7090:
7091: Fri May 18 18:14:18 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
7092:
7093: * fixincludes: Fix CAT macro in memvar.h.
7094:
7095: Fri May 18 16:13:59 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7096:
7097: * expr.c (do_jump): Don't explicitly copy item being tested from
7098: MEM to REG. If needed, this will be done later.
7099:
7100: Thu May 17 14:33:50 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7101:
7102: * Makefile.in (bootstrap): Pass LANGUAGES to inner makes.
7103:
7104: Thu May 17 13:57:34 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
7105:
7106: * fixincludes: Handle _CTRL like CTRL.
7107:
7108: Wed May 16 21:09:42 1990 Richard Kenner (kenner at vlsi1.ultra.edu)
7109:
7110: * fold-const (fold): Two conversions in a row are needed if from an
7111: integer type to a pointer type of a different precision.
7112:
7113: Wed May 16 16:09:47 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
7114:
7115: * expr.c (expand_expr): Make sure a volatile value is referenced
7116: even if value is ignored.
7117:
7118: * c-typeck.c (truthvalue_conversion): Result COND_EXPR gets type int.
7119: (invert_truthvalue): Simplify COND_EXPR.
7120:
7121: Tue May 15 00:25:03 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
7122:
7123: * stor-layout.c (layout_record): Do set TYPE_SIZE if size is var.
7124:
7125: * reload.c (push_reload): If insn is an asm, verify that CLASS
7126: is at least possible for the specified mode.
7127:
7128: * c-decl.c (complete_array_type): Compensate for wide string constant.
7129:
7130: * final.c (leaf_function_p): Reject everything if profiling.
7131:
7132: * function.c (optimize_bit_field): Adjust OFFSET if
7133: BITS_BIG_ENDIAN != BYTES_BIG_ENDIAN.
7134:
7135: * expmed.c (store_bit_field, extract_bit_field): Rework the code
7136: to adjust XBITPOS for the size within which to count.
7137: (extract_bit_field): When converting MEM to REG, don't make SUBREG
7138: immediately; fall through and let this happen in the code that
7139: handles original registers of the wrong mode.
7140:
7141: Mon May 14 16:01:13 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
7142:
7143: * cexp.y (yylex): Ignore carriage return.
7144: * cccp.c (initialize_char_syntax): Likewise.
7145: (newline_fix, name_newline_fix): Likewise.
7146:
7147: * c-common.c: New file.
7148: (combine_strings): Moved here. Fix errors for wide string length.
7149: * c-parse.y, objc-parse.y, cplus-lex.c: Function deleted here.
7150:
7151: Sun May 13 08:08:41 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7152:
7153: * integrate.c (subst_constants): Fix typo in case 'E'.
7154:
7155: Sat May 12 17:14:26 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
7156:
7157: * combine.c (subst): Don't change -(y-x) to x-y for IEEE floats.
7158: Include real.h.
7159:
7160: * cse.c (fold_rtx): Don't simplify float+0, float-0, float*0
7161: if using IEEE floating point.
7162: Don't simplify float-self even if not IEEE.
7163: * fold-const.c (fold): Likewise.
7164:
7165: * i386.md (trunc**): Use long move if source is constant.
7166: * out-i386.c (PRINT_REG): Handle CODE == 'k'.
7167:
7168: * fixincludes: Use rm -fr to delete before making link.
7169:
7170: * optabs.c (init_optabs): Support MULDI3_LIBCALL, etc.
7171:
7172: Sat May 12 17:04:58 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7173:
7174: * cse.c (find_best_addr): Don't modify constant address MEMs; they
7175: are shared.
7176:
7177: Sat May 12 15:17:37 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
7178:
7179: * ns32k.md (signed bitfield extract): Don't output assembler comment.
7180:
7181: Fri May 11 15:23:55 1990 Richard Kenner (kenner at vlsi1.ultra.nyu.edu)
7182:
7183: * Makefile.in: Don't use $(libsubdir) as a target since it involves
7184: shell `...` constructs.
7185:
7186: * genattr.c (fatal, main): Remove relics of old program name.
7187: * genattrtab.c: Likewise.
7188:
7189: * expr.c (expand_expr, case COND_EXPR): Add missing argument to
7190: operand_equal_p.
7191:
7192: * reload.c (form_sum): Handle case where second operand is
7193: (plus foo (const_int ...)).
7194:
7195: * c-typeck.c (c_sizeof{,_nowarn}, c_alignof): Don't blow up for
7196: ERROR_MARK.
7197: * cplus-typeck.c (c_sizeof{,_nowarn}, c_alignof): Likewise.
7198:
7199: * cplus-typeck.c (c_sizeof{,_nowarn}): Convert from bytes to chars,
7200: since c defines sizeof (char) as 1.
7201:
7202: * loop.c (mark_loop_jump): RETURN, SIGN_EXTEND, and ZERO_EXTEND can
7203: also occur in JUMP_INSN's.
7204:
7205: * reload.c (find_reloads, find_reloads_address): Correct errors where
7206: an arg to find_reloads is "VOIDmode" instead of "0" and vice versa.
7207: (find_reloads_address_1): Likewise.
7208:
7209: * global-alloc.c (global_alloc): Avoid divide-by-zero for allocnos
7210: where all regs have reg_live_length == -2.
7211:
7212: Fri May 11 14:45:06 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
7213:
7214: * tm-i860.h (ASM_OUTPUT_CASE_LABEL): Align to multiple of 4.
7215:
7216: Thu May 10 23:43:31 1990 Richard Stallman (rms at sugar-bombs.ai.mit.edu)
7217:
7218: * out-i860.c (single_insn_src_p, strict_single_insn_src_p):
7219: Correct conditions for needing multiple instructions.
7220: (output_delayed_branch): Likewise.
7221:
7222: See file ChangeLog.1.
7223:
7224: Local Variables:
7225: mode: indented-text
7226: left-margin: 8
7227: fill-column: 76
7228: version-control: never
7229: End:
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