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Annotation of gcc/ChangeLog, revision 1.1.1.5

1.1.1.5 ! root        1: Wed Aug  3 08:29:31 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !             2: 
        !             3:        * integrate.c (expand_inline_function): Don't let MEM be inline_target.
        !             4: 
        !             5: Tue Aug  2 09:13:37 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !             6: 
        !             7:        * integrate.c (INTEGRATE_THRESHOLD): New macro, default dfn here.
        !             8:        (function_cannot_inline_p): Use it.
        !             9: 
        !            10:        * rtl.h (REG_FUNCTION_VALUE_P): New macro.
        !            11:        * stmt.c (expand_function_start): Set that flag in the return reg.
        !            12:        * integrate.c (expand_inline_function, copy_rtx_and_substitute):
        !            13:        Test that flag to test for the return value.
        !            14:        * expmed.c (expand_fixed_bit_field, expand_mult, expand_divmod): ditto.
        !            15:        FUNCTION_VALUE_OUTGOING_REGNO_P no longer needed.
        !            16: 
        !            17: Mon Aug  1 02:46:08 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !            18: 
        !            19:        * integrate.c (copy_rtx_and_substitute): If NO_FUNCTION_CSE,
        !            20:        don't break out constant fcn addresses here.
        !            21: 
        !            22:        * expmed.c (expand_fixed_bit_field): Tests of FUNCTION_VALUE_REGNO_P
        !            23:        were backwards.
        !            24: 
        !            25: Sun Jul 31 13:10:07 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !            26: 
        !            27:        * recog.c (indirect_operand): New function.
        !            28: 
        !            29:        * output-i386.c (print_operand): define %*. eliminate %s.
        !            30:        (fp_top_dead_p): In nonopt case, skip stack-adjusts while looking
        !            31:        for the insn that uses the function value.
        !            32: 
        !            33:        * varasm.c (text_section, data_section): New functions.
        !            34:        Replaced explicit printfs elsewhere with calls to them.
        !            35:        * final.c (final_start_function): Use these fns.
        !            36:        * sdbout.c (sdbout_one_type): Use text_section.
        !            37:        * tm-att386.h (ASM_OUTPUT_LOCAL): Use data_section.
        !            38: 
        !            39:        * expr.c (prepare_call_address): Don't pass const via reg if no -O.
        !            40: 
        !            41:        * tm-sparc.h (FUNCTION_{PROLOGUE,EPILOGUE}) Round the size of saved
        !            42:        registers.  Fix bug counting saved registers.
        !            43: 
        !            44:        * tm-sparc.h (ASM_OUTPUT_SOURCE_LINE): Define this macro.
        !            45: 
        !            46:        * tm-sparc.h (DEFAULT_SIGNED_CHAR): Now 1.
        !            47: 
        !            48:        * expr.c (expand_builtin, alloca case): Adding stack offset needs
        !            49:        special code if TARGET is a MEM.
        !            50: 
        !            51:        * dbxout.c (dbxout_init): Define Ltext: after the reference to it.
        !            52: 
        !            53:        * tm-3b1.h (ASM_OUTPUT_CASE_LABEL): `short 0' triggers assembler bug;
        !            54:        `short L%nn-L%nn' supposedly works.
        !            55: 
        !            56: Sat Jul 30 00:25:52 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !            57: 
        !            58:        * sparc.md (floatsidf2): Minor change in output.
        !            59:        (fix_trunc{sf,df}si2): Similar.
        !            60: 
        !            61:        * output-sparc.c (output_fp_move_double): Minor change in output.
        !            62: 
        !            63:        * stmt.c (assign_parms): Don't count stack space for struct value
        !            64:        address if the function does not have one.
        !            65: 
        !            66:        * sdbout.c: Output .dim's and total size for arrays.
        !            67:        Detect bit-fields properly.
        !            68:        Changed handling of structure tags.
        !            69: 
        !            70:        * reload1.c (new_spill_reg): counted_for_nongroups is a new arg;
        !            71:        store 1 in it if this reg is needed for max_nongroups.
        !            72: 
        !            73:        * reload1.c (choose_reload_targets): Allow inheritance of DFmode
        !            74:        if it needs only one register.
        !            75: 
        !            76:        * reload1.c (choose_reload_targets): Delete the death-note from the
        !            77:        store-insn of an inherited reload if PRESERVE_DEATH_INFO_REGNO_P.
        !            78: 
        !            79:        * reload.c (push_reload): Crash if PREFERRED_RELOAD_CLASS is NO_REGS.
        !            80:        (find_reloads): Smarter handling of forcing CONST_DOUBLE into mem.
        !            81:        Check PREFERRED_RELOAD_CLASS & do this if it says NO_REGS.
        !            82: 
        !            83:        * reload.c (subst_indexed_address): Handle case with 2 regs
        !            84:        and no constant term.
        !            85: 
        !            86:        * local-alloc.c: New variable qty_n_refs, set from reg_n_refs
        !            87:        and tested in qty_compare{,_1}.
        !            88:        (combine_regs): Update qty_n_refs.
        !            89:        Update qty_preferred_or_nothing more intelligently.
        !            90: 
        !            91:        * regclass.c (regclass, reg_class_record, record_address_regs):
        !            92:        Count the number of refs to each reg along with the costs,
        !            93:        and use it when computing the preferred_or_nothing flag.
        !            94:        (Can't use reg_n_refs since that is weighted by loop depth).
        !            95: 
        !            96:        * global-alloc.c (global_alloc): Enable test of OVERLAPPING_REGNO_P
        !            97:        for setting no_global_alloc_regs.
        !            98: 
        !            99:        * expr.c (prepare_call_address): Use force_reg, so it gets a REG_EQUIV.
        !           100: 
        !           101:        * optabs.c (can_{fix,float}_p): Return enum insn_code, not a function.
        !           102:        (init_{fix,float}_tab): Store enum insn_code's in fixtab and floattab.
        !           103:        (expand_{fix,float}): Change calls to can_{fix,float}_p.
        !           104:        Also, use emit_unop_insn to make the actual insns.
        !           105: 
        !           106: Fri Jul 29 02:42:40 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           107: 
        !           108:        * cccp.c (initialize_char_syntax): If dollars_in_identifiers is 0,
        !           109:        set entries for `$' to 0.
        !           110:        Set entries to 1 rather than incrementing them.
        !           111: 
        !           112: Tue Jul 26 11:14:22 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           113: 
        !           114:        * varasm.c (assemble_variable): Make SDB output only if top-level.
        !           115: 
        !           116:        * local-alloc.c (reg_is_set): Arg to mark_life is regno, not qty.
        !           117: 
        !           118:        * output-ns32k.c (print_operand_address): New flag SEQUENT_BASE_REGS
        !           119:        * tm-sequent.h: Define that flag.
        !           120: 
        !           121:        * Makefile: add some missing deps.
        !           122: 
        !           123:        * tm-encore.h (ASM_FILE_START): Changed to do nothing.
        !           124: 
        !           125:        * sdbout.c (sdbout_init): Fix two dumb errors.
        !           126: 
        !           127:        * sdbout.c (sdbout_end_epilogue): No longer takes arg.
        !           128:        Examine current_function_decl here, not in caller.
        !           129:        * final.c: Call changed.
        !           130: 
        !           131: Mon Jul 25 01:32:54 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           132: 
        !           133:        * stor-layout.c (layout_record): Handle PCC_BITFIELD_TYPE_MATTERS.
        !           134: 
        !           135:        * tm-3b1.h (__PTR_TO_INT, __INT_TO_PTR): Define these, to alter
        !           136:        parts of obstack.h.
        !           137: 
        !           138: Sun Jul 24 17:56:53 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           139: 
        !           140:        * Padding for an arg may now go below or above it; new macro
        !           141:        FUNCTION_ARG_PADDING can now choose which, or can inhibit padding.
        !           142:        This makes for compatibility with PCC.
        !           143:        * expr.h: Default definition of that macro.
        !           144:        * expr.c (emit_push_insn): Put the padding above or below.
        !           145:        (expand_call): Don't count the padding if none wanted.
        !           146:        * stmt.c (assign_parms): Adjust parm stack addr if padded below.
        !           147:        Don't count the padding if none wanted.
        !           148:        * tm-3b1.h: Define FUNCTION_ARG_PADDING: no padding for > 4 bytes.
        !           149: 
        !           150:        * final.c (alter_subreg): Now returns the altered value
        !           151:        (but may still modify the original structure).
        !           152:        Handles (SUBREG:DI (CONST_DOUBLE:DF...)) by returning the CONST_DOUBLE.
        !           153: 
        !           154:        * m68k.md (DImode push): now allows `F'.
        !           155:        * ns32k.md (movdi): now allows `F'.
        !           156: 
        !           157:        * tm-m68k.h (FIX_FRAME_POINTER_ADDRESS):
        !           158:        Handle indexed references to frame pointer.
        !           159:        * tm-i386.h, tm-m88k.h, tm-sparc.h: Likewise.
        !           160: 
        !           161:        * cse.c (predecide_loop_entry): Must search for the loop top label.
        !           162: 
        !           163: Sat Jul 23 08:53:01 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           164: 
        !           165:        * parse.y (yylex): typo in wide strings.
        !           166: 
        !           167:        * tm-vaxv.h, config-vaxv.h: New files for sysV on vax.
        !           168: 
        !           169:        * config-sun4.h: If sparc and not compiling with GCC, include alloca.h.
        !           170: 
        !           171: Fri Jul 22 02:38:02 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           172: 
        !           173:        * tree.c (build_real_from_int_cst): CHECK_FLOAT_VALUE at proper place.
        !           174: 
        !           175:        * tm-hp9k320.h ({TEXT,DATA}_SECTION_ASM_OP): Should not include a tab.
        !           176:        * final.c (final_start_function): Don't output a tab before those.
        !           177: 
        !           178:        * sdbout.c (PUT_SDB_EPILOGUE_END): New macro.
        !           179:        * sdbout.c (sdbout_end_epilogue): New function to output the C_EFCN.
        !           180:        Like former sdbout_mark_end_function.  Uses that macro.
        !           181:        * final.c (final_end_function): Call that function.
        !           182:        * tm-3b1.h: Override PUT_SDB_EPILOGUE_END like the other PUT_SDB...
        !           183: 
        !           184:        * tm-3b1.h (PRINT_OPERAND_ADDRESS, ASM_OUTPUT_INTERNAL_LABEL,
        !           185:        ASM_OUTPUT_CASE_{LABEL,END}): Put a % in names of internal labels.
        !           186:        (ASM_GENERATE_INTERNAL_LABEL, ASM_OUTPUT_ADDR_{VEC,DIFF}_ELT):
        !           187:        New macros, for same reason.
        !           188:        (FUNCTION_PROFILER): New macro, for % and also to put addr in a0.
        !           189: 
        !           190:        * final.c (output_source_line): For fcn's first line, use lineno 1.
        !           191:        * sdbout.c (sdbout_end_function): Clear sdb_begin_function_line
        !           192:        so can recognize first line of next function.
        !           193: 
        !           194:        * sdbout.c (sdbout_init): Output the .file pseudo here.
        !           195:        * tm-3b1.h, tm-att386.h (ASM_FILE_START): Don't do it here.
        !           196: 
        !           197:        * sdbout.c (PUT_SDB_VAL): Output leading tab, like the other macros.
        !           198:        * tm-3b1.h (PUT_SDB_VAL): Likewise.
        !           199: 
        !           200:        * regclass.c (regclass): Cast enums to int, not char.
        !           201:        * varasm.c (record_constant): Likewise.  Avoids 3b1 PCC bug.
        !           202: 
        !           203:        * decl.c (pushdecl): Better choice of error message for extern/static.
        !           204: 
        !           205:        * emit-rtl.c: Do look for STRUCT_VALUE_INCOMING_REGNUM.
        !           206: 
        !           207: Thu Jul 21 02:13:03 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           208: 
        !           209:        * cse.c (canon_hash): CONST_INT case failed to add to prev. value
        !           210:        of HASH; was inconsistent with cse_insn mem address hashing.
        !           211: 
        !           212:        * m68k.md (divide insns): Alternate 3B1 syntax for `swap' insn.
        !           213: 
        !           214: Wed Jul 20 18:27:10 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           215: 
        !           216:        * m68k.md: In shift-by-24 patterns, rejects autoincrement memrefs
        !           217:        since they are mode-dependent.
        !           218: 
        !           219: Tue Jul 19 13:01:38 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           220: 
        !           221:        * parse.y (check_newline): Handle #ident by writing .ident to output.
        !           222:        * cccp.c: Don't handle #ident; delete IDENT_DIRECTIVE conditionals.
        !           223: 
        !           224:        * stmt.c (expand_end_case): In compares, put constant arg second.
        !           225: 
        !           226:        * jump.c (jump_optimize): Delete conditional jump if followed by
        !           227:        an unconditional jump to the same place.
        !           228: 
        !           229: Mon Jul 18 17:49:13 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           230: 
        !           231:        * emit-rtl.c (init_emit_once): Now STRUCT_VALUE_INCOMING is an
        !           232:        expression for an rtx.  It can make a MEM.  Likewise STRUCT_VALUE
        !           233:        for outgoing structure value addresses.
        !           234: 
        !           235:        * stmt.c (assign_parms): If incoming struct addr on stack, leave room.
        !           236:        * expr.c (expand_call): If outgoing addr on stack, push it like an arg.
        !           237: 
        !           238:        * PROMOTE_PROTOTYPES means if proto says `char', pass `int'.
        !           239:        * decl.c (get_parm_info): Alter DECL_ARG_TYPE to do this.
        !           240:        * typecheck.c (actualparameterlist): Convert value for this.
        !           241:        * tm-m68k.h: Define PROMOTE_PROTOTYPES.
        !           242: 
        !           243: Sun Jul 17 14:25:47 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           244: 
        !           245:        * jump.c (jump_optimize): peephole can delete insns following INSN.
        !           246:        Set NEXT after peephole.
        !           247: 
        !           248:        * decl.c (finish_decl): Always restart perm alloc if global.
        !           249: 
        !           250:        * stmt.c (assign_parms): When a float is passed as double, store the
        !           251:        float in low-numbered word.  Avoids trouble with parm_map in integrate.
        !           252: 
        !           253:        * vax.md: New pattern for decrement and compare against -1.
        !           254: 
        !           255: Sat Jul 16 14:18:00 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           256: 
        !           257:        * decl.c (pushdecl): Ignore previous decl if it's really an error_mark.
        !           258: 
        !           259:        * stmt.c (expand_start_case): Make sure case_stmt.start is a NOTE.
        !           260: 
        !           261:        * combine.c (subst): In the simplification for
        !           262:        (set (zero_extract ...) (and/or/xor (zero_extract ...) const)),
        !           263:        require same memory location in both extracts.
        !           264: 
        !           265:        * *386*: New files.
        !           266: 
        !           267:        * cse.c (fold_rtx): Save time in memory address if it didn't change.
        !           268:        Don't replace cheaper expression with coslier one.
        !           269:        (cse_insn): Reenable generation of REG_WAS_0.  It wasn't obsolete.
        !           270: 
        !           271:        * cccp.c: `ident' has 5 letters.
        !           272: 
        !           273:        * final.c (output_source_line): SDB can't handle multiple source
        !           274:        files, so ignore line-NOTEs for other files.
        !           275: 
        !           276:        * hard-reg-set.h: New var reg_class_size (# regs in the class).
        !           277:        * regclass.c (init_reg_class): Set it up.
        !           278: 
        !           279:        * reload.c (find_reloads): If an earlyclobber is in a class of size 1
        !           280:        as an output, reload it as input instead of as output.
        !           281: 
        !           282:        * reload1.c (choose_reload_targets): Improve elimimation of spilled
        !           283:        pseudos made dead by reloading: if pseudo is limited to one block
        !           284:        and that block contains just stores, delete all the stores.
        !           285: 
        !           286:        * reload1.c (choose_reload_targets): reg_has_output_reload is now
        !           287:        static and survives through reload pass.
        !           288:        (forget_old_reloads): Don't cancel data on spilled regs of output
        !           289:        reloads of the insn just made.
        !           290: 
        !           291:        * sdbout.c (sdbout_one_type): Go to .text before defining a type.
        !           292:        (sdbout_block): Test against do_block was backwards.
        !           293: 
        !           294:        * stmt.c (expand_end_function): New args to make a NOTE for last line.
        !           295:        * decl.c (finish_function): Pass the args.
        !           296: 
        !           297:        * rtl.c (no_labels_between): New function.
        !           298:        * vax.md (movsi): Call it.
        !           299: 
        !           300:        * print-tree.c (dump): Don't follow chain of a decl.
        !           301: 
        !           302:        * rtl.c (volatile_refs_p): Moved from flow.c.
        !           303: 
        !           304: Fri Jul 15 13:36:20 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           305: 
        !           306:        * sdbout.c (PUT_SDB...): Allow config to override any of them.
        !           307:        * sdbout.c (PUT_SDB_{BLOCK,FUNCTION}_{START,END}): New macros.
        !           308:        * tm-3b1.h: Override all of them.
        !           309:        * sdbout.c (SDB_GENERATE_FAKE): New macro to create dummy tag name.
        !           310:        (gen_fake_label): Use SDB_GENERATE_FAKE.
        !           311:        * tm-3b1.h: Override its defn.
        !           312: 
        !           313:        * sdbout.c (sdbout_mark_function_end): Unused; deleted.
        !           314: 
        !           315:        * tm-3b1.h: Define SDB_DEBUGGING_INFO.
        !           316: 
        !           317: Thu Jul 14 01:55:15 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           318: 
        !           319:        * config-sunv4.h: New file for Sunos version 4.
        !           320: 
        !           321:        * tm-sun3.h (CPP_SPEC): Define mc68010 or mc68020, depending.
        !           322: 
        !           323: Tue Jul 12 15:31:30 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           324: 
        !           325:        * stmt.c (expand_fixup, expand_goto_internal): New functions to
        !           326:        emit a jump that can restore the stack level, even without tree node.
        !           327:        (expand_null_return, expand_exit_loop, etc.): Use expand_goto_internal.
        !           328:        (expand_end_function): Do fixup_gotos after emitting return_label.
        !           329: 
        !           330:        * cse.c (predecide_loop_entry): Avoid using JUMP_LABEL.
        !           331:        * flow.c (find_basic_blocks): Avoid using JUMP_LABEL.
        !           332: 
        !           333:        * flow.c (insn_dead_p): Delete special case for stack-adjust insns.
        !           334:        (life_analysis): Mark those insns with INSN_VOLATILE here.
        !           335:        (mark_used_regs): a SET of a hard reg, in a volatile insn,
        !           336:        always makes its source live.
        !           337: 
        !           338: Mon Jul 11 10:46:26 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           339: 
        !           340:        * ns32k.md (floatqidf2): Commented out since assemblers warn about it.
        !           341: 
        !           342: Sun Jul 10 11:49:23 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           343: 
        !           344:        * decl.c (xref_tag): Default the TYPE_MODE of enum xrefs
        !           345:        to avoid making MEM and REG with VOIDmode.
        !           346: 
        !           347:        * vax.md (call): If > 255 args, pop them explicitly.
        !           348: 
        !           349: Sat Jul  9 10:53:47 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           350: 
        !           351:        * symout.c (symout_types): Fix up forward refs to previously
        !           352:        undefined structure types.
        !           353:        (filter_undefined_types): New function.
        !           354:        (symout_finish, symout_function_end): Output any never-defined structs.
        !           355:        * toplev.c (rest_of_compilation): call symout_function_end.
        !           356: 
        !           357:        * parse.y: Don't declare errno if it's a macro.
        !           358: 
        !           359:        * tm-hp9k320 (FUNCTION_PROFILER): Pass ptr in a0, not d0.
        !           360: 
        !           361:        * typecheck.c (truthvalue_conversion): Flush unnec recursive call.
        !           362:        (build_cond_expr): Bug testing zeroness of IFEXP with TREE_LITERAL.
        !           363: 
        !           364:        * cse.c (fold_cc0): Constants not CONST_INT are certainly nonzero.
        !           365:        * fold-const.c (fold): ADDR_EXPR is not equal to zero.
        !           366: 
        !           367:        * cccp.c (macroexpand): Disable the macro even if traditional.
        !           368:        (rescan): Error if use a disabled macro.
        !           369: 
        !           370:        * combine.c (try_combine): Don't substitute a different reg into
        !           371:        an auto-increment.  Handle multiple REG_INC notes in I1 or I2.
        !           372: 
        !           373:        * decl.c (implicitly_declare): Don't reuse old implicit decl.
        !           374: 
        !           375:        * varasm.c (assemble_variable): Avoid syntax err if no DBX and no SDB.
        !           376:        * final.c (output_source_line): likewise.
        !           377: 
        !           378:        * fold-const.c (fold): PLUS/MINUS_EXPR: in case of cancellation,
        !           379:        convert result to original type.
        !           380: 
        !           381:        * regclass.c (reg_class_record): Changed arguments include address
        !           382:        of entire vector of constraints.
        !           383: 
        !           384: Fri Jul  8 07:59:00 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           385: 
        !           386:        * reload1.c (reload): Find groups of more than 2 registers.
        !           387: 
        !           388: Thu Jul  7 08:33:07 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           389: 
        !           390:        * expr.c (emit_push_insn): Typo adjusting arg for bcopy
        !           391:        if not STACK_GROWS_DOWNWARD.
        !           392: 
        !           393:        * gnulib.c (_cmpsf2): Value is int, not SFVALUE.
        !           394: 
        !           395: Wed Jul  6 11:53:46 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           396: 
        !           397:        * tm-encore.h, tm-3b1.h: Replace ASM_FILE_START; output a .file.
        !           398: 
        !           399:        * *m88*: New files for Motorola 88000.  They don't really work.
        !           400: 
        !           401: Tue Jul  5 14:40:03 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           402: 
        !           403:        * local-alloc.c (combine_regs): Don't tie a reg to itself.
        !           404: 
        !           405:        * finxincludes: Make a variable LIB for the target dir.
        !           406: 
        !           407:        * m68k.md (movhi, addhi3, addsi3): Micro-optimize choice of asm insns.
        !           408: 
        !           409:        * expr.c (expand_expr): Use new macros NO_DEFER_POP, OK_DEFER_POP
        !           410:        in several places, to keep stack predictable.
        !           411: 
        !           412: Mon Jul  4 09:50:18 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
        !           413: 
        !           414:        * integrate.c (function_cannot_inline_p): Increase threshold size.
        !           415: 
        !           416:        * flags.h (use_gdb_dbx_extensions): New variable.
        !           417:        * toplev.c:
        !           418: 
        !           419:        * sdbout.c (PUT_SDB_TAG): Delete duplicate defn.
        !           420: 
        !           421:        * expr.c (expand_expr): For FIX_TRUNC_EXPR to unsigned short/char,
        !           422:        REALLY go via signed int.
        !           423: 
        !           424:        * loop.c (may_trap_p): Was detecting floating arithmetic incorrectly.
        !           425: 
        !           426:        * tm-news800.h (CPP_PREDEFINES): Add sony and sony_news.
        !           427: 
        !           428:        * parse.y (check_newline): Avoid infinite loop at eof.
        !           429: 
1.1.1.4   root      430: Sat Jul  2 10:35:17 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    431: 
                    432:        * Version 1.24 released.
                    433: 
                    434:        * stmt.c (expand_asm_operands): Produce proper no-outputs insn.
                    435:        * recog.c (asm_noperands): Detect no-outputs insns.
                    436:        (decode_asm_operands): Likewise.
                    437:        * reload.c (find_reloads): Likewise (add case ASM_OPERANDS:).
                    438: 
                    439:        * local-alloc.c (block_alloc): Tests of qty_compare were backwards.
                    440: 
                    441:        * flow.c (life_analysis): Turn off code that finds regs live at
                    442:        function start and marks them not local to any basic block.
                    443: 
                    444:        * cse.c (insert_regs): Fix typo (UNITS_PER_WORD).
                    445: 
                    446:        * cccp.c: Define max.
                    447: 
                    448:        * expr.c (expand_expr): Put each SAVE_EXPR's reg on save_expr_regs,
                    449:        if not optimizing.
                    450:        * stmt.c (expand_function_end): Mark each of those regs live
                    451:        at the end and also retroactively at the beginning of the function.
                    452: 
                    453:        * output-vax.c (print_operand_address): New function from old macro.
                    454:        * tm-vax.h (PRINT_OPERAND_ADDRESS): Call that function.
                    455: 
                    456:        * config-vms.h: If not under GNU C, define X_OK, etc.
                    457: 
                    458:        * expr.c (move_by_pieces_1): Use * to call GENFUN.
                    459:        (expand_expr): Compare DECL_FUNCTION_CODE against an enum const.
                    460:        (preexpand_calls): Likewise.
                    461:        * genrecog.c (write_tree): Likewise.
                    462:        * final.c (final): Use * to call the output function.
                    463:        * reload.c (push_reload): Rename `noshare' to `dont_share'.
                    464: 
                    465:        * genoutput.c (output_epilogue): Put more newlines in insn_outfun.
                    466:        * genemit (gen_exp): Put in more newlines.
                    467: 
                    468: Fri Jul  1 00:23:57 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    469: 
                    470:        * global-alloc.c (allocno_compare): Avoid comparisons of floats
                    471:        since that is sensitive to roundoff errors.
                    472: 
                    473: Thu Jun 30 09:25:40 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    474: 
                    475:        * sdbout.c (PUT_SDB_{DEF,TAG}): Use ASM_OUTPUT_LABELREF.
                    476:        (PUT_SDB_PLAIN_DEF): New name for old defn of PUT_SDB_DEF
                    477:        (sdbout_one_type): Use PUT_SDB_PLAIN_DEF for `.eos'.
                    478: 
                    479:        * tree.c (allocation_temporary_p): New fcn.
                    480:        (all_types_permanent): New variable.
                    481:        (make_node): If that's set, make each ...TYPE node permanent.
                    482:        * decl.c (grokdeclarator): If traditional, make decl data permanent.
                    483:        (finish_decl): Make the rtl permanent too.
                    484:        * stor-layout.c (layout_type): If type is permanent,
                    485:        make its layout data permanent too.
                    486: 
                    487:        * cccp.c: Choose C++ or C at run time via var `cplusplus'.
                    488:        Separate cplusplus_include_default from include_default.
                    489:        Get GNU-specific include directory names from macros
                    490:        GCC_INCLUDE_DIR and GPLUSPLUS_INCLUDE_DIR.
                    491:        (main): Initialize based on CPLUSPLUS; `-+' sets it.
                    492:        * Makefile: Set *_INCLUDE_DIR based on $(libdir).
                    493: 
                    494: Tue Jun 28 09:25:49 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    495: 
                    496:        * tree.c (copy_node): Round LENGTH up to multiple of sizeof (int).
                    497: 
                    498:        * expr.c (emit_push_insn): Avoid using PUSH_ROUNDING if not defined.
                    499: 
                    500:        * sparc.md (floatsisf2): Insert missing brace.
                    501:        (mulsi3): Replace reg_o0_rtx, reg_o1_rtx.
                    502: 
                    503:        * tm-sparc.h: Define DBX_DEBUGGING_INFO.
                    504: 
                    505:        * parse.y (yylex): If traditional, no error for out-of-range float.
                    506: 
                    507:        * Makefile: Comment saying how to compile on an Apollo.
                    508: 
                    509:        * tm-sparc.h (ASM_FILE_START): Switch to new calling convention.
                    510: 
                    511:        * decl.c (init_decl_processing): Create type nodes for 64-bit ints.
                    512:        (grokdeclarator): use them for `long long'.  Warn only if pedantic.
                    513: 
                    514:        * optabs.c (init_optabs): Add missing DImode insn names.
                    515: 
                    516:        * expr.c (emit_block_move, emit_push_insn): Use movstrqi if appro.
                    517: 
                    518:        * expr.c (convert_move): use extendsidi if appropriate.
                    519: 
                    520:        * cccp.c (initialize_builtins): Don't install __STDC__ if traditional.
                    521:        (main): Call initialize_builtins after option processing.
                    522: 
                    523:        * integrate.c (output_inline_function): Set current_function_decl.
                    524: 
                    525:        * cse.c (fold_rtx): Typo in avoiding 32-bit shifts.
                    526: 
                    527:        * cccp.c: Add forward-decl.
                    528: 
1.1.1.3   root      529: Mon Jun 27 18:06:42 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    530: 
                    531:        * hard-reg-set.h (reg_alloc_order): New variable
                    532:        based on REG_ALLOC_ORDER, a new machine-description macro.
                    533:        * regclass.c (reg_alloc_order): Define it.
                    534:        * local-alloc.c (find_free_reg): Handle reg_alloc_order.
                    535:        * global-alloc.c (find_reg): Likewise.
                    536:        * stupid.c (stupid_find_reg): Likewise.
                    537: 
                    538: Sun Jun 26 10:47:47 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    539: 
                    540:        * Version 1.23 released.
                    541: 
                    542:        * tm-3b1.h: Define IDENT_DIRECTIVE.
                    543: 
                    544:        * tm-encore.h: Define SDB_DEBUGGING_INFO.
                    545:        Define SCCS_DIRECTIVE and IDENT_DIRECTIVE.
                    546: 
                    547:        * output-ns32k.c: Decl of paren_base_reg_printed must be outside fcns.
                    548: 
                    549:        * tm-encore.h (ASM_OUTPUT_DOUBLE): Do 0f, not 0l.
                    550:        (CPP_PREDEFINES): No -Dns32032.
                    551: 
                    552:        * sdbout.c: Include syms.h, not storclass.h.
                    553:        (unnamed_struct_member): Decl was missing.
                    554:        (PUT_SDB_INT_VAL, PUT_SDB_VAL): Fix typos.
                    555:        (sdbout_types, sdbout_one_type, sdbout_parms): Fix typos.
                    556: 
                    557:        * Makefile: Add file sdbout.o.
                    558:        Changed comments pertaining to sysV.
                    559:        Make a separate target `doc' to make the info files.
                    560: 
                    561:        * m68k.md (bit-field insns): Use nonimmediate_operand for the thing
                    562:        to extract from.
                    563:        * vax.md (QImode bit-field insns): Likewise.
                    564: 
                    565:        * recog.c (nonimmediate_operand): Accept any nonconst general operand.
                    566: 
                    567: Sat Jun 25 07:54:42 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    568: 
                    569:        * cse.c (lookup_as_function): arg to exp_equiv_p was missing.
                    570: 
                    571: Fri Jun 24 09:14:47 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    572: 
                    573:        * recog.c (memory_operand): Allow (subreg (mem...)).
                    574: 
                    575: Thu Jun 23 07:34:07 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    576: 
                    577:        * decl.c (finish_enum): Compute minimum value like maximum.
                    578:        If minimum is negative, install it in the type and make it signed.
                    579: 
                    580:        * stor-layout.c (layout_record): STRUCTURE_SIZE_BOUNDARY is minimum.
                    581:        (layout_type): A RECORD_TYPE or UNION_TYPE must be BLKmode if
                    582:        any member is BLKmode.  This is to prevent putting it in a register.
                    583:        (layout_decl): If decl's type is BLKmode, the decl *must* be BLKmode.
                    584: 
                    585:        * local-alloc.c (find_free_reg): Never allocate the frame pointer reg.
                    586: 
                    587:        * tm-sequent.h (PRINT_OPERAND): Bug in SFmode CONST_DOUBLE.
                    588:        * tm-encore.h: Likewise.
                    589: 
                    590:        * flow.c (flow_analysis): Bug in n_basic_blocks error check.
                    591: 
                    592:        * stmt.c (expand_asm_operands): Emit no insn if an arg is erroneous.
                    593: 
                    594: Tue Jun 21 08:34:24 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    595: 
                    596:        * reload.c (find_reloads_address): Write back *loc even if
                    597:        subst_reg_equivs makes no change, in case subst_index_address did.
                    598: 
                    599:        * flow.c: Define macros for -1 and -2 as values of reg_basic_block.
                    600:        (mark_used_regs): Add an `else'; no change in behavior.
                    601:        (mark_label_ref): Abort if LABEL_REF doesn't contain a CODE_LABEL.
                    602:        (find_basic_blocks): Extra error check.
                    603: 
                    604:        * output-ns32k.c (print_operand_address): Changes in handling of
                    605:        register-indirect, and of indexing by sb register.
                    606: 
                    607: Mon Jun 20 04:55:38 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    608: 
                    609:        * cccp.c (collect_definition): Compute needed space more accurately.
                    610:        Abort if use more space than was allocated.
                    611:        (rescan) [USE_C_ALLOCA]: Do alloca (0) after handle_directive.
                    612: 
                    613:        * genflags.c (gen_insn): Put parens around defns of HAVE_... macros.
                    614: 
                    615: Sun Jun 19 02:52:53 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    616: 
                    617:        * expr.c (emit_push_insn): Consider PARM_BOUNDARY when compensating
                    618:        for size of a pushed arg to bcopy.
                    619: 
                    620: Sat Jun 18 07:20:54 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    621: 
                    622:        * New files sparc.md, tm-sparc.h, config-sparc.h, output-sparc.c.
                    623: 
                    624:        * final.c (final): After an ADDR_{,DIFF_}VEC, do ASM_OUTPUT_CASE_END.
                    625:        * tm-3b1.h: Define ASM_OUTPUT_CASE_END.
                    626:        (PRINT_OPERAND_ADDRESS): Ref the case tables via an intermediate symbol
                    627:        `LDnnn' whose def. is output by ASM_OUTPUT_CASE_END.
                    628:        (ASM_OUTPUT_CASE_LABEL): Add missing newline.
                    629: 
                    630:        * reload.c (find_equiv_reg): Reject a MEM containing an autoincrement.
                    631: 
                    632: Fri Jun 17 06:58:37 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                    633: 
                    634:        * genpeep.c (main): Write `extern' in the decl for `peep_operand'.
                    635: 
                    636:        * flow.c (propagate_block): When a dead insn has a REG_RETVAL note,
                    637:        call mark_set_regs anyway, so that `significant' is updated.
                    638: 
                    639:        * jump.c (follow_jumps): New arg IGNORE_LOOPS.  If 0, don't follow
                    640:        the insn at the beginning of a loop that enters the loop; this avoids
                    641:        interference with loop optimizer.
                    642:        (jump_optimize, tension_vector_labels): Pass that arg.
                    643: 
                    644:        * loop.c (loop_optimize): Mention invalid multiple-entry loops in log.
                    645: 
                    646:        * m68k.md (extv, extzv): Fix # of alternatives mismatch in constraints.
                    647: 
                    648: Thu Jun 16 03:06:48 1988  Richard Stallman  (rms at corn-chex.ai.mit.edu)
                    649: 
                    650:        * genrecog.c (change_state): Was mishandling printing XVECEXP indices 
                    651:        greater than 9.
                    652: 
                    653:        * combine.c (subst, simplify_and_const_int): Avoid making SUBREG
                    654:        of a non-REG.
                    655: 
                    656:        * expr.c (expand_expr): For FIX_TRUNC_EXPR to unsigned short/char,
                    657:        go via signed int.
                    658: 
                    659:        * optabs.c (expand_fix): Copy hard_libcall_value reg only once.
                    660: 
                    661:        * reload1.c (order_regs_for_reload): Init all elements
                    662:        of  potential_reload_regs to -1.
                    663: 
                    664:        * Prevent generation of (set (reg) (plus ... (label_ref ...))).
                    665:        * explow.c (memory_address_noforce): Like `memory_address' but
                    666:        never force it into a register.
                    667:        * expr.c (do_tablejump): Use that.
                    668:        * m68k.md (casesi): Use that.
                    669: 
                    670:        * rtl.h (struct rtx_def, GET_CODE, PUT_CODE): If SHORT_ENUM_BUG,
                    671:        define the `code' field as a short.
                    672: 
                    673: Wed Jun 15 01:25:57 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    674: 
                    675:        * gcc.c (CPP_SPEC): New spec set by config.h gives flags to cpp.
                    676:        * tm-*.h for m68k: Define CPP_SPEC to define __HAVE_FPU__ on
                    677:        appropriate conditions.
                    678: 
                    679:        * combine.c (subst): Simplify (not (minus x 1)) and (neg (minus x y)).
                    680: 
                    681: Mon Jun 13 02:22:43 1988  Richard Stallman  (rms at corn-chex.ai.mit.edu)
                    682: 
                    683:        * typecheck.c (build_array_ref): Avoid duplicate errmsg if index
                    684:        is an error-mark.
                    685: 
                    686: Sun Jun 12 23:04:39 1988  Richard Stallman  (rms at corn-chex.ai.mit.edu)
                    687: 
                    688:        * cccp.c (handle_directive): If -traditional, quotes aren't special.
                    689:        (rescan): Assume newline ends a string constant.
                    690: 
                    691:        * cccp.c, cexp.y: Make all fcns non-static; add some forward decls.
                    692: 
                    693:        * various: add static forward-decls for various functions.
                    694: 
                    695: Fri Jun 10 00:25:18 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    696: 
                    697:        * reload1.c (choose_reload_targets): When writing back an incremented
                    698:        value (handling reload_inc), write back to the real place, not to
                    699:        OLDEQUIV (a register that holds the same value).
                    700: 
                    701:        * tm-m68k.h (LEGITIMIZE_ADDRESS): Don't give force_operand a target.
                    702:        This can cause the use of multiple insns with same output reg,
                    703:        which can confuse cse.
                    704: 
                    705:        * loop.c (consec_sets_invariant_p):
                    706:        If invariant_p ever returns 2, we return 2.
                    707:        New arg is # of consecutive sets to look for,
                    708:        since this info is no longer in n_times_set at move_movables.
                    709:        (scan_loop): If consec_sets_invariant_p returns 2, set m->cond.
                    710:        (move_movables): check consecutive insns if m->consec && m->cond.
                    711: 
                    712:        * tm*.h: ASM_DECLARE_FUNCTION_NAME now takes 3rd arg,
                    713:        the FUNCTION_DECL node.
                    714:        * varasm.c (assemble_function): Pass this arg.
                    715: 
                    716:        * expr.c (expand_call, expand_builtin [alloca]):
                    717:        If STACK_POINTER_OFFSET is defined, add it to stack pointer contents
                    718:        before using it as address of actual data on the stack.
                    719:        * stmt.c (expand_decl): Likewise.
                    720: 
                    721:        * stmt.c (assign_parms): If 1st parm named `__builtin_va_alist'
                    722:        came in regs, pretend it came on stack.
                    723:        Handle pretending a BLKmode var came on the stack.
                    724:        If REG_PARM_STACK_SLOT, count stack space for each parm
                    725:        even if the parm came in a register; and use that stack space
                    726:        if the parm needs to be addressable or is BLKmode.
                    727:        Rearrange to simplify conditionals.
                    728: 
                    729: Thu Jun  9 01:21:29 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    730: 
                    731:        * local-alloc.c:
                    732:        `qty_...' vectors' elements for hard-reg-numbers now aren't used.
                    733:        `reg_qty' elements for hard-reg numbers now aren't used,
                    734:        and the element for a pseudo is never a hard-reg number.
                    735:        (local_alloc): No need to reset those elements.
                    736:        No need to reset elements out of range of prev block's NEXT_QTY.
                    737:        (reg_is_born, reg_is_set, wipe_dead_reg):
                    738:        Divide labor in same way for hard regs and pseudos;
                    739:        simplify using fact that locality-to-basic-block has been precomputed
                    740:        and recorded in reg_qty; avoid refs to reg_qty[HARDREG].
                    741:        (reg_is_born, wipe_dead_regs): Block-number arg no longer needed.
                    742: 
                    743:        * local-alloc.c (combine_regs): Remove old code for tying hard regs
                    744:        to pseudos; great simplification results.
                    745:        Use find_regno_note, not regno_dead_p.
                    746: 
                    747: Wed Jun  8 00:18:04 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    748: 
                    749:        * reload.c (subst_reg_equivs): Set a flag if anything is changed.
                    750:        (find_reloads_address): Check that flag to avoid extra work.
                    751:        Also check early for safe reg+const address and avoid work.
                    752: 
                    753:        * reload.c (find_reloads): Use loops instead of bcopy.
                    754:        Check early for insn with no real constraints, and return.
                    755:        Also check for move from hard reg to hard reg and return.
                    756: 
                    757:        * cse.c (canon_reg): Rewrite for speed; use a switch.
                    758:        (cse_insn): Don't call find_reg_note if REG_NOTES is 0.
                    759: 
                    760:        * cse.c (cse_insn): Store modified SET_SRC even if there's a REG_EQUIV.
                    761:        Inhibition was needed when the SET_SRC was the only place to find the
                    762:        equivalent value; now it is in the REG_EQUIV note.
                    763: 
                    764:        * stmt.c (expand_asm_operands): If NINPUTS is 0, make vec of no elts.
                    765:        * regclass.c (reg_scan_mark_refs): Don't lose if XVEC (x,i) is 0.
                    766: 
                    767: Tue Jun  7 03:51:28 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    768: 
                    769:        * stmt.c (assign_stack_local): If big-endian and MODE is narrow,
                    770:        the bytes actually used are the least significant.
                    771: 
                    772:        * parse.y (skip_white_space): Accept char as arg; let caller read it.
                    773:        (yylex): Change call.
                    774:        (check_newline): Return 1st nonwhite char after skipping lines.
                    775:        (skip_white_space): Change call.
                    776:        * toplev.c (compile_file): Change call.
                    777: 
                    778:        * gcc.c: Pass -traditional to cc1.
                    779: 
                    780:        * cse.c (cse_insn): Return very early for (set (reg) (call...)).
                    781:        Mainly to save time.
                    782:        (cse-insn) Old code to add REG_WAS_0 note wasted time but did nothing.
                    783: 
                    784:        * expr.c (clear_pending_stack_adjust): Really do clear it,
                    785:        if current fcn doesn't want to be inline.
                    786: 
                    787:        * cse.c (cse_insn): Speedup: instead of safe_hash, use canon_hash
                    788:        or HASHREG.
                    789: 
                    790: Mon Jun  6 21:47:23 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    791: 
                    792:        * jump.c (rtx_renumbered_equal_p): Reject ADDR_VEC fast.
                    793: 
                    794:        * cse.c (cse_insn): Ignore a REG_EQUIV or REG_EQUAL note if the
                    795:        equivalent value is the same as the SET_SRC of the insn.
                    796: 
                    797:        * flow.c (life_analysis): Don't call volatile_refs_p for a CALL_INSN;
                    798:        just assume value is 1.
                    799:        (propagate_block): Don't call mark_{used,set}_regs for a stack-pop
                    800:        since if it isn't dead it has no effect on any useful life data.
                    801:        (mark_set_1): Return quickly if setting stack-ptr, and almost as
                    802:        quickly if setting any hard reg.
                    803:        (mark_used_regs): Likewise for refs.
                    804:        Also don't scan the vector of an ADDR_VEC or ADDR_DIFF_VEC.
                    805:        (volatile_refs_p): Likewise.
                    806: 
                    807:        * varasm.c (output_constant): Discard NOP_EXPR and CONVERT_EXPR
                    808:        in integer case (they were for casting a pointer).
                    809: 
                    810:        * parse.y (compstmt_or_error): Parse a compstmt after ignoring error.
                    811:        Use this for fctn body so that an error after store_parm_decls
                    812:        won't recover to xdecls and call store_parm_decls again.
                    813:        Typical cause was missing semi at end of last parmdecl.
                    814: 
                    815:        * parse.y: Add missing semicolons in actions.
                    816:        (yylex): Don't use yylloc.
                    817: 
                    818: Sun Jun  5 16:14:40 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    819: 
                    820:        * typecheck.c (build_array_ref): Check arg types here, to make
                    821:        error message more accurate (not about "addition").
                    822: 
                    823: Thu Jun  2 02:41:40 1988  Richard Stallman  (rms at rice-krispies.ai.mit.edu)
                    824: 
                    825:        * cccp.c (collect_expansion): `#' isn't special if -traditional.
                    826: 
                    827:        * dbxout.c (dbxout_parms): Don't output a regparm symbol
                    828:        unless the parm got a hard reg assigned.
                    829: 
                    830:        * tm-encore.h (ASM_OUTPUT_DOUBLE): Use 0f... not 0d...
                    831: 
                    832:        * tm-vax.h (CHECK_FLOAT_VALUE): Define this.
                    833: 
                    834: Wed Jun  1 17:13:00 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    835: 
                    836:        * expr.c (expand_call): Have sequence points between args.
                    837: 
                    838: Tue May 31 00:27:06 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    839: 
                    840:        * expmed.c (store_fixed_bit_field): Avoid shifting by 32.
                    841:        * cse.c (fold_rtx):
                    842:        * symout.c (subrange_p):  likewise.
                    843: 
                    844:        * local-alloc.c (block_alloc): If operands 1 and 2 commute,
                    845:        try tying output to operand 2 if operand 1 won't do.
                    846: 
                    847:        * toplev.c (compile_file): Pass main_input_file to symout_init.
                    848: 
                    849:        * tree.c (build_real, build_real_from_int_cst):
                    850:        Call CHECK_FLOAT_VALUE if it's defined, to report out-of-range values.
                    851: 
                    852:        * tree.c (build_real, build_real_from_int_cst): New 1st arg TYPE.
                    853:        * parse.y (yylex): Pass this arg; requires parsing suffixes first.
                    854:        * fold-const.c (fold, combine, fold_convert): Pass this arg.
                    855:        Handling of float binops in `combine' simplified.
                    856: 
                    857:        * tm-encore.h (CPP_PREDEFINES): Remove -Dencore since CC lacks it.
                    858: 
                    859:        * final.c (output_source_line): Let ASM_OUTPUT_SOURCE_LINE
                    860:        be used for SDB also.
                    861: 
                    862: Mon May 30 00:21:15 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    863: 
                    864:        * cse.c (insert): Was inserting in wrong place in list.
                    865:        (exp_equiv_p): Was failing to check validity when x == y.
                    866: 
                    867:        * tree.c (build_pointer_type): Handle saveable_obstack
                    868:        like current_obstack.
                    869: 
                    870:        * decl.c (finish_decl): Error in test for zero-size array warning.
                    871: 
                    872:        * reload.c (find_equiv_reg): New arg MODE specifies mode in which
                    873:        an equivalent value is needed.  Equivalence must be good in that mode.
                    874:        In addition, notice overlap with multiword register modes.
                    875:        Simplify, knowing that registers have already been renumbered.
                    876:        It was invalidating memory-goals too easily; setting a reg
                    877:        only invalidates memory-goal if its address varies.
                    878:        * reload.c, reload1.c, jump.c: Calls pass the new argument.
                    879: 
                    880:        * cccp.c: For correct ANSI, must reject `$' in identifiers.
                    881:        (dollars_in_ident): Variable says whether to allow them.
                    882:        (rescan): Handle `$' as randomchar if that's 0.
                    883:        (main): dollars_in_ident is set to 0 by -$, to 1 by -traditional.
                    884:        (rescan, do_define): Delete former pedantic warnings for `$'.
                    885:        (initialize_char_syntax, initialize_builtins): Inits split to two
                    886:        functions; former is called after options are scanned
                    887:        so `$' is in is_idchar conditionally.
                    888:        * gcc.c: For -ansi, pass -$ to cccp.
                    889:        * toplev.c, flags.h: Define dollars_in_ident.
                    890:        * parse.y (yylex): Treat $ as punctuation unless dollars_in_ident.
                    891:        Delete old pedantic warning about $.
                    892:        * tm-vms.h: Define DOLLARS_IN_IDENTIFIERS as 1.
                    893: 
                    894:        * cccp.c (rescan): Preprocessing numbers can have signs, after `e'.
                    895: 
                    896:        * integrate.c (expand_inline_function): Abort, don't return failure,
                    897:        if max_regno is too low.  I believe this can't happen.
                    898: 
                    899:        * typecheck.c (build_binary_op_nodefault):
                    900:        For ordered comparisons, no pedantic warning about void *.
                    901:        For MAX, MIN, ditto, and also don't allow pointer vs 0.
                    902: 
                    903:        * typecheck.c (build_unary_op): Don't allow pointer for +.
                    904: 
                    905:        * typecheck.c (convert_for_assignment): 
                    906:        Add missing warning for case of unrelated pointer types.
                    907:        Change criteria for new ANSI C draft.
                    908: 
                    909:        * optabs.c (expand_binop): Don't set unused target_is_not_an_operand.
                    910: 
                    911:        * fold-const.c (fold_convert): Don't set unused inprec, outprec.
                    912: 
                    913:        * emit-rtl.c, parse.y: Delete unused var.
                    914: 
                    915:        * stor-layout.c (add_vc_sizes): Unused function deleted.
                    916:        * loop.c (constant_high_bytes): #if 0 this unused function.
                    917: 
                    918:        * gcc.c (fatal): Add missing arg to delete_temp_files.
                    919: 
                    920:        * cccp.c (dump_defn_1): Add missing arg to skip_quoted_string.
                    921: 
                    922:        * reload.c (find_reloads): If constraints don't fit in an `asm',
                    923:        print error instead of aborting.
                    924: 
                    925:        * regclass.c (reg_class_record): Ignore `&' in constraint.
                    926: 
                    927: Sun May 29 00:20:23 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    928: 
                    929:        * Makefile: Run ranlib only if /usr/bin/ranlib exists.
                    930:        Add comment saying what to do on system V.
                    931: 
                    932:        * tree.c (suspend_momentary): Switch to the saveable_obstack
                    933:        for the sake of inline functions.
                    934: 
                    935:        * flags.h (enum debugger): New enum for write_symbols.
                    936:        * toplev.c, varasm.c, final.c: Use the enum constants where appro.
                    937:        Add calls to sdbout paralleling the calls to dbxout;
                    938:        put each in the appropriate conditional {SDB,DBX}_DEBUGGING_INFO.
                    939: 
                    940:        * toplev.c (main): Delete -noreg option; it's now the default.
                    941:        Make -O an alias for -opt.  Rename -g to -gg.  -g is alias for -G.
                    942:        Accept and ignore -Wtrigraphs.
                    943:        * gcc.c: Simplify the specs.
                    944: 
                    945:        * toplev.c (compile_file), tm-*.h:
                    946:        ASM_FILE_START is now a statement, not just a string to be output.
                    947:        Output it *after* determining the real source file name.
                    948: 
                    949:        * fold-const.c (fold): Simplify x >= CST to x > CST-1 (CST positive).
                    950:        To simplify this, canonicalize relationals to put constat last.
                    951: 
                    952:        * decl.c (duplicate_decls): Make a 2nd errmsg to show previous decl.
                    953: 
                    954:        * cccp.c (file_size_and_mode): Delete temporary VMS bootstrap patch.
                    955: 
                    956:        * tm-att386.h: New file.
                    957: 
                    958:        * decl.c (pushdecl): Warn if a local `extern' decl precedes
                    959:        a file-scope `static' decl.
                    960: 
                    961:        * expr.c (expand_call): No warning for failure to inline.
                    962: 
                    963:        * expmed.c (extract_bit_field): copy operand 1 of extv or extzv
                    964:        into register if memory isn't allowed.
                    965: 
                    966: Sat May 28 02:10:56 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)
                    967: 
                    968:        * gnulib.c, Makefile: Delete va_end.
                    969: 
                    970:        * final.c, symout.c: Check DBX_DEBUGGING_INFO, not NO_DBX_FORMAT.
                    971: 
                    972:        * genemit.c (gen_expand): Notice a CALL inside a PARALLEL.
                    973: 
                    974:        * regclass.c (init_reg_sets_1): Part of init_reg_set is put in this
                    975:        new fn which is called after options are scanned.
                    976:        Now CONDITIONAL_REGISTER_USAGE can depend on the options.
                    977:        (fix_register): Just alter the data that init_reg_sets_1 will look at.
                    978: 
                    979:        * reload1.c (reload): Don't complain if two different but tieable
                    980:        modes require groups of the same regclass (assuming same size group).
                    981: 
                    982:        * cccp.c: Add 3rd arg to all `open' calls.
                    983: 
                    984:        * parse.y (check_newline): Typo prevented ignoring whitespace.
                    985: 
                    986:        * cccp.c (perror_with_name): fprintf had harmful extra arg.
                    987: 
                    988:        * cccp.c (main, trigraph_pcp): -Wtrigraphs means warn if any trigraphs.
                    989: 
                    990:        * emit-rtl.c (gen_sequence): If LEN is 1, avoid looking at PATTERN
                    991:        of something that doesn't have one.
                    992: 
                    993:        * reload1.c (alter_frame_pointer_addresses): frame pointer can
                    994:        occur by itself, not just inside a PLUS.
                    995:        (reload): Call eliminate_frame_pointer before reload_as_needed.
                    996:        Otherwise the latter can make reload insns that copy the frame ptr
                    997:        to a data reg, but 68k can't copy sp+const to a data reg.
                    998: 
                    999:        * decl.c (implicitly_declare): Always save the implicit decl
                   1000:        permanently.  Reuse an old one if it exists.
                   1001:        * tree.c (resume_temporary_allocation): Used after `end_temporary...'
                   1002:        to go back to temporary allocation.
                   1003: 
                   1004:        * stor-layout (layout_{type,decl}): Call variable_size.
                   1005:        (variable_size): Turn a size into a SAVE_EXPR and either compute
                   1006:        it right away or put it on a list to be computed later.
                   1007:        (get_pending_sizes): Return that list and clear it out.
                   1008:        * stmt.c (expand_start_function): Tell `variable_size' to compute
                   1009:        sizes right away, and compute those saved on the list.
                   1010:        (expand_end_function): Tell it to put them on a list.
                   1011: 
                   1012: Fri May 27 00:02:34 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1013: 
                   1014:        * dbxout.c (dbxout_symbol): For local static var, use 'V', not 'v'.
                   1015: 
                   1016:        * gcc.c (main): Don't handle SIGHUP or SIGTERM if shell ignored it.
                   1017: 
                   1018:        * Makefile, gcc.c: Propagate Make var `libdir' to gcc search path.
                   1019: 
                   1020:        * expr.c (expand_expr): a PARM_DECL with no rtl can occur in size of
                   1021:        `a' in `foo (a,i) int i; struct {int x[i];} a;', so report an error.
                   1022: 
                   1023:        * flow.c (insn_dead_p): insn that makes stack bigger is never dead.
                   1024:        * combine.c (try_combine): Don't splice out stores into stack ptr.
                   1025: 
                   1026:        * reload.c (find_equiv_reg): Test given regno for OVERLAPPING_REGNO_P.
                   1027: 
                   1028:        * varasm.c (assemble_variable): Use saveable_obstack for allocation.
                   1029: 
                   1030: Thu May 26 01:17:00 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1031: 
                   1032:        * integrate.c (save_for_inline): Clear unused slots in parmdecl_map.
                   1033:        (There may be some non-parm regs below max_parm_regno.)
                   1034:        * integrate.c (copy_for_inline): Don't crash if parmdecl_map elt is 0.
                   1035: 
                   1036:        * Don't fail to output a static inline function that was referenced
                   1037:        via a local extern decl before its definition.
                   1038:        * expr.c (expand_call): If need to mark a fcn decl addressable,
                   1039:        mark the identifier addressable also.
                   1040:        * typecheck.c (mark_addressable): If marking fcn addressable,
                   1041:        mark the identifier as well.
                   1042:        * decl.c (start_function): If identifier was marked addressable,
                   1043:        propagate it to the function.
                   1044: 
                   1045:        * parse.y (yylex): Check for ERANGE after atof is called.
                   1046:        (Sun doesn't report ERANGE.)
                   1047: 
                   1048:        * loop.c (may_trap_p): Any floating arithmetic may trap.
                   1049: 
                   1050: Wed May 25 00:03:34 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1051: 
                   1052:        * parse.y: Delete `noalias'.
                   1053:        (asm_operand): Don't allow this to be empty.
                   1054:        (asm_operands): Do allow this to be empty.
                   1055: 
                   1056:        * reload.c (operands_match_p): Don't let REG and SUBREG match
                   1057:        if the reg isn't a hard reg.
                   1058:        No longer nec. to check reg_renumber, now that reload
                   1059:        substitutes the hard regno.
                   1060: 
                   1061:        * reload1.c (reload): Counting existing spilled groups,
                   1062:        check HARD_REGNO_MODE_OK so we don't get fooled by an odd-even pair.
                   1063:        Spill entire need for new groups before spilling any solitary regs.
                   1064:        Reg already counted against max_nongroups can't become part of a group.
                   1065:        (new_spill_reg): Do bookkeeping associated with a new spill-reg.
                   1066:        (n_spills): This var is now static, no longer passed as arg
                   1067:        within the file.
                   1068: 
                   1069:        (reload_reg_class_lower): Handle all group-reloads before solitaries.
                   1070:        (choose_reload_targets): therefore #if 0 the special code for
                   1071:        finding solitary registers that aren't suitable for groups.
                   1072:        But fix two bugs in it: braino deciding whether a reload
                   1073:        is looking for 1 register (not a group).  Use CLASS_MAX_NREGS.
                   1074:        Also braino deciding whether a spill reg can be in a group.
                   1075:        Did not fix bug that it fails to test HARD_REGNO_MODE_OK,
                   1076:        so it might split up an even-odd pair.
                   1077: 
                   1078:        * vax.md: Special patterns for 8 and 16-bit fields, to make
                   1079:        move-insns (like the ones for the 68k).
                   1080: 
                   1081:        * tree.c (convert_to_integer): Pass truncation down thru COND_EXPR
                   1082:        as through a binary operator.
                   1083: 
                   1084:        * typecheck.c (build_cond_expr): If unpromoted operand types match,
                   1085:        don't promote them--let containing expression promote (just once).
                   1086: 
                   1087: Tue May 24 14:46:26 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1088: 
                   1089:        * combine.c (subst): Simplify (subreg (sign_extend X) 0).
                   1090: 
                   1091:        * tm-hp9k320.h: Delete NO_DBX_FORMAT.
                   1092:        * Most tm...h files: Define DBX_DEBUGGING_INFO.
                   1093:        * dbxout.c: Change conditional to DBX_DEBUGGING_INFO.
                   1094: 
                   1095:        * integrate.c (expand_inline_function): If inline fcn was declared to
                   1096:        return QI, but actually computes an SI, use SImode for INLINE_TARGET
                   1097:        but actually return a QI.
                   1098: 
                   1099:        * varasm.c (force_const_mem): Failed to determine alignment bdry
                   1100:        from machine mode.
                   1101: 
                   1102:        * jump.c (jump_optimize): Don't delete (move X Y) if X or Y is a
                   1103:        PRESERVE_DEATH_INFO_REGNO_P register.
                   1104: 
                   1105:        * final.c (output_addr_const): In PLUS, output constant term last.
                   1106: 
                   1107:        * final.c (final): Before outputting an insn, do FINAL_PRESCAN_INSN.
                   1108: 
                   1109:        * final.c (next_block_index): No longer static.
                   1110:        (final): Add SDB_DEBUGGING_INFO cases for outputing NOTEs
                   1111:        for beginning and end of a block.
                   1112:        (output_source_line): Add SDB_DEBUGGING_INFO case for line number.
                   1113:        * varasm.c (assemble_function): Add code for SDB symbol output.
                   1114: 
                   1115:        * gnulib.c: Allow config to override INTIFY.
                   1116:        New macro SFVALUE for data type to return a single-float in.
                   1117: 
                   1118:        * combine.c (remove_death): No longer `static'.
                   1119: 
                   1120:        * reload1. (choose_reload_targets): PRESERVE_DEATH_INFO_REGNO_P
                   1121:        selects hard regs for which death info should be updated for final.
                   1122: 
                   1123:        * reload1.c (reload_as_needed): Let INSN_CLOBBERS_REGNO_P
                   1124:        prevent inheritance of certain reloads.
                   1125: 
                   1126:        * reload.c (find_equiv_reg): Let OVERLAPPING_REGNO_P reject
                   1127:        an equiv reg.  Needed for funny float regs on 80387.
                   1128: 
                   1129:        * cccp.c (do_ident): Define #ident as a no-op if IDENT_DIRECTIVE.
                   1130:        Warn if pedantic.
                   1131:        (do_sccs): Warn if pedantic.
                   1132: 
                   1133:        * emit-rtl.c (restore_reg_data): Set cur_insn_uid--prevent duplicates.
                   1134: 
1.1.1.2   root     1135: Sun May 22 12:25:06 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1136: 
                   1137:        * Version 1.22 released.
                   1138: 
                   1139:        * reload1.c (reload): Spilling isn't finished till max_nongroups is 0.
                   1140: 
                   1141:        * tm-encore.h (PRINT_OPERAND): No `$' before a CONST.
                   1142: 
                   1143: Sat May 21 13:08:54 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1144: 
                   1145:        * fold-const.c (combine): Typo in MIN_EXPR, MAX_EXPR.
                   1146: 
                   1147:        * reload1.c (reload): Was counting insn_groups as total size of groups,
                   1148:        not number of groups.
                   1149:        A new spilled group counts against group-needs of superclasses.
                   1150: 
                   1151:        * parse.y (parmlist{,_or_identifiers}_1): In error case,
                   1152:        return a tree list just as in the other cases.
                   1153: 
                   1154: Fri May 20 02:14:51 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1155: 
                   1156:        * config-vax.h, config-m68k.h: If __GNUC__, use builtin-alloca.
                   1157: 
                   1158:        * genpeep.c (match_rtx): Generated code was testing the wrong rtx
                   1159:        when testing an int or string at a nonzero index in the rtx.
                   1160: 
                   1161:        * reload.c (find_reloads): Typo checking `modified' for conflict
                   1162:        with an earlyclobber.
                   1163: 
                   1164:        * reload.c (find_equiv_reg): Reject stack ptr as return value.
                   1165: 
                   1166:        * expr.c (expand_builtin): Alloca must do pending stack adjust.
                   1167: 
                   1168: Thu May 19 13:01:01 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1169: 
                   1170:        * flow.c (propagate_block): Skipping back across libcall didn't happen
                   1171:        due to failing to set PREV.
                   1172: 
                   1173:        * expr.c (emit_library_call): Code to increment and decrement
                   1174:        current_args_size broke since emit_call_1 was changed to restore it.
                   1175: 
                   1176:        * combine.c (try_combine): When i1 or i2 auto-incs a reg, don't combine
                   1177:        if i3 uses that reg.
                   1178: 
                   1179:        * config-hp9k3.h: #define bcopy, bcmp, bzero here.
                   1180:        * conf-hp9k320.h: Delete file.
                   1181: 
                   1182:        * integrate.c: Don't include strings.h--no need.
                   1183: 
                   1184:        * stmt.c (expand_asm_operands): Don't make zero-length vectors.
                   1185: 
                   1186:        * loop.c (scan_loop): After a fcn call, maybe-trap insns can't move.
                   1187:        The fcn call might exit and that would prevent the trap.
                   1188: 
                   1189:        * reload1.c (reload): Set reload_first_uid to next uid to be used.
                   1190:        * reload.c (find_equiv_reg): Use reload_first_uid to ignore insns
                   1191:        that are due to reloading--only if reload_reg_p is not 0 or 1.
                   1192: 
                   1193: Wed May 18 22:11:20 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1194: 
                   1195:        * typecheck.c (build_unary_op): Don't complain about array
                   1196:        as argument to `!'.
                   1197: 
                   1198:        * decl.c (pushdecl): If locally declaring an extern function,
                   1199:        check the identifier's global value in case it's an inline function.
                   1200: 
                   1201: Mon May 16 03:06:08 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1202: 
                   1203:        * output-ns32k.c (output_shift_insn): New fn, maybe turn shift to adds.
                   1204:        (reg_or_mem_operand): Predicate for a non-immediate general_operand.
                   1205:        * tm-ns32k.h (CONST_OK_FOR_LETTER_P): Define letter K.
                   1206:        * ns32k.md: Use output_shift_insn for various addr insns that shift.
                   1207:        Don't allow nonexplicit constants in lprd, multiply or truncate insns.
                   1208:        Use reg_or_mem_operand for constraint in op1 of divide insns;
                   1209:        a constant there causes regclass to screw up.
                   1210:        Split alternative constraints on the bit-field insns to avoid
                   1211:        out-of-range operands in exts, inss.  Some cases of extraction
                   1212:        can be done faster via memory.
                   1213: 
                   1214:        * flow.c (mark_set_1): When adding a REG_DEAD note, inc reg_n_deaths.
                   1215: 
                   1216:        * dbxout.c (dbxout_type_def): Do nothing for {integer,char}_type_node.
                   1217: 
                   1218: Sun May 15 00:56:44 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1219: 
                   1220:        * tm-sequent.h, tm-ns32k.h, tm-encore.h (PRINT_OPERAND):
                   1221:        Was treating SF's as SI's.
                   1222: 
                   1223:        * expr.c (emit_move_insn): Check all CONST_DOUBLEs for
                   1224:        LEGITIMATE_CONSTANT_P and put them in memory if not.
                   1225: 
                   1226:        * local-alloc.c (combine_regs): Allow a reg to be tied to a qty
                   1227:        if the reg's class is contained in the qty's class
                   1228:        (as well as if the reg's class contains the qty's class as before).
                   1229:        Rename qty_reg_class to qty_min_class and make it the smallest
                   1230:        class of any reg tied to the qty.
                   1231:        (reg_class_subset_p, reg_meets_class_p, update_qty_class):
                   1232:        New subroutines to implement this.
                   1233:        (local_alloc): Init reg_qty to -1 for pseudos not in cur. basic block.
                   1234:        (reg_is_born): Abort if pseudo not in basic block has -2 in reg_qty.
                   1235: 
                   1236:        * jump.c (rtx_renumbered_equal_p): Insist that modes of REGs match.
                   1237: 
                   1238: Sat May 14 01:05:35 1988  Richard Stallman  (rms at lucky-charms.ai.mit.edu)
                   1239: 
                   1240:        * stmt.c (expand_return): Empty frame frame_offset isn't nec. 0.
                   1241: 
                   1242:        * expr.c (emit_call_1): Use stack_size_rtx everywhere appropriate.
                   1243: 
                   1244:        * decl.c (init_decl_processing): Set sizetype to `unsigned long'
                   1245:        if `int' is less than a word.
                   1246: 
                   1247:        * stddef.h (size_t, ptrdiff_t): Both are now long.
                   1248: 
                   1249: Fri May 13 01:06:00 1988  Richard Stallman  (rms at lucky-charms.ai.mit.edu)
                   1250: 
                   1251:        * emit-rtl.c (gen_lowpart): Handle non-lowpart subreg as arg.
                   1252: 
                   1253:        * recog.c (register_operand): VOIDmode means allow any mode.
                   1254:        (immediate_operand, nonmemory_operand): Likewise.
                   1255: 
                   1256:        * emit-rtl.c (classify_insn): Update for changed CALL_INSN format.
                   1257:        (emit): New function to emit an rtl pattern as the right kind of insn.
                   1258:        * jump.c (simplejump_p): No longer static.
                   1259: 
                   1260:        * genemit.c (gen_expand): For match_operand at top level, call `emit'.
                   1261:        Use `emit_call_insn' when appropriate.
                   1262:        (gen_exp): Handle rtx's that contain strings.
                   1263: 
                   1264:        * final.c, symout.c: If not NO_DBX_FORMAT, include stab.h to get the
                   1265:        N_... symbols.  Use their default definitions only if they're undef.
                   1266: 
                   1267:        * expr.c (expand_call) [no PUSH_ROUNDING]: Always set argblock
                   1268:        if there are any stack-passed arguments.
                   1269: 
                   1270:        * typecheck.c (build_unary_op): Mark all increment-exprs volatile.
                   1271: 
                   1272:        * recog.c (reg_renumbered_fits_class_p): Delete private copy of
                   1273:        reg_class_contents.
                   1274: 
                   1275:        * reload1.c (forget_old_reloads): Handle PARALLEL case by recursion.
                   1276:        Explicit store into a spilled reg invalidates old reloaded contents;
                   1277:        this can occur when we drop through into a basic block whose need was 0
                   1278:        (and so whose local pseudos were not spilled).
                   1279: 
                   1280:        * gcc.c (main): If -v, print gcc's own version; also no error msg
                   1281:        if no input files.
                   1282: 
                   1283:        * loop.c (may_trap_p): Mem ref to nonconstant address may trap.
                   1284:        (scan_loop): Check may_trap_p only when insn is in other respects ok.
                   1285: 
                   1286:        * cexp.y: #include config.h (for decl of alloca on some machines).
                   1287: 
                   1288: Thu May 12 17:24:19 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1289: 
                   1290:        * regclass.c (regclass): When inserting an insn at start of block,
                   1291:        update basic_block_head.
                   1292: 
                   1293: Wed May 11 00:47:09 1988  Richard Stallman  (rms at corn-chex.ai.mit.edu)
                   1294: 
                   1295:        * stmt.c (assign_parms): DECL_OFFSET should be offset as passed
                   1296:        (not including big-endian width-change correction).
                   1297: 
                   1298:        * typecheck.c (shorten_compare): Set unsignedp[01] right in case
                   1299:        where get_narrower makes no change.
                   1300:        (build_binary_op_nodefault): Likewise for shortening shifts.
                   1301: 
                   1302:        * stmt.c (expand_end_case): Use type_for_size to get the type
                   1303:        to convert the index to, since `int' is wrong if -mshort.
                   1304: 
                   1305:        * decl.c (grokdeclarator): Don't check PARM type for completeness.
                   1306:        (grokparms): If fn definition, check all parm types for completeness.
                   1307:        (store_parm_decls): Likewise.
                   1308: 
                   1309: Tue May 10 22:42:13 1988  Richard Stallman  (rms at corn-chex.ai.mit.edu)
                   1310: 
                   1311:        * typecheck.c (store_init): For invalid init, store error_mark_node.
                   1312:        * varasm.c (assemble_variable): Ignore error_mark as an init.
                   1313:        * stmt.c (expand_decl): If init is error_mark, init to 0 if possible.
                   1314:        This avoids a spurious "uninitialized variable" warning.
                   1315: 
                   1316: Sun May  8 17:08:07 1988  Richard Stallman  (rms at lucky-charms.ai.mit.edu)
                   1317: 
                   1318:        * tm-hp9k320.h: Define STRUCTURE_SIZE_BOUNDARY.
                   1319: 
                   1320:        * decl.c (get_parm_info): Replaces get_parm_types.  Returns a tree_list
                   1321:        containing parmdecls and tag list as well as type list.
                   1322:        (grokparms): Accept that tree_list as argument.
                   1323:        (grokdeclarator): Calling grokparms, say "not a definition" for the
                   1324:        function declarators for arg or value types within a definition.
                   1325: 
                   1326:        * parse.y: Call get_parm_info.
                   1327:        (parmlist_or_identifiers): If identifiers, make a tree_list
                   1328:        like the one get_parm_info returns.
                   1329: 
                   1330: Fri May  6 16:44:19 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1331: 
                   1332:        * m68k.md (casesi): Delete template aside from match_operand's.
                   1333: 
                   1334:        * tm-encore.h: New file from Robert Brown.
                   1335: 
                   1336:        * ns32k.md: Use %c in some addr insns.
                   1337:        (tst*): Use {d,f,}const0_rtx to make the constant 0; OS-independent.
                   1338:        (call, call_value): Use %? before address in a bsr.
                   1339: 
                   1340:        * output-ns32k.c (print_operand_address): To output a local label,
                   1341:        use `output_asm_label'.
                   1342:        Make SEQUENT_ADDRESS_BUG conditionals happen at compile time.
                   1343: 
                   1344:        * tm-ns32k.h: Delete SEQUENT_HAS_FIXED_THEIR_BUG.
                   1345:        (PRINT_OPERAND): Output nothing for `%?'.
                   1346:        * tm-sequent.h: (PRINT_OPERAND): Output nothing for `%?'.
                   1347: 
                   1348:        * final.c (output_asm_label): No longer `static'.
                   1349: 
                   1350: Thu May  5 09:03:37 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1351: 
                   1352:        * explow.c (memory_address): Ignore flag_force_reg unless optimize.
                   1353:        Also ignore it for addresses of stack slots (avoid invalid REG_EQUIVs).
                   1354: 
                   1355:        * typecheck.c (digest_init): If traditional, allow `char x[100]=0;'.
                   1356: 
                   1357:        * tree.c (get_unwidened): Don't alter a COMPONENT_REF if
                   1358:        innerprec equals the precision of the existing type.
                   1359:        It was changing pointers to integers.
                   1360: 
                   1361:        * m68k.md (movdi): Put all fpregs in separate constraint alternatives
                   1362:        and handicap them so spill reg won't be an fp reg.
                   1363: 
                   1364:        * parse.y (yyerror): Use the arg as part of the error message.
                   1365: 
                   1366:        * decl.c (start_function): Give the RESULT_DECL type int rather
                   1367:        than char or short.
                   1368:        * typecheck.c (c_expand_return): Convert value from fn's return type
                   1369:        to the RESULT_DECL's type.
                   1370: 
                   1371:        * Avoid generating dbx xrefs to enums, since dbx loses on them.
                   1372:        Do this by outputting all types in order of definition.
                   1373:        This is done only for top-level types; problem remains for local ones.
                   1374: 
                   1375:        * decl.c (finish_decl): Do rest_of_decl_compilation for TYPE_DECLs.
                   1376:        * toplev.c (rest_of_decl_compilation): Do dbxout_symbol for them.
                   1377: 
                   1378:        * dbxout.c (dbxout_symbol): Check DECL_RTL only for fns and variables.
                   1379:        For a TYPE_DECL, ignore it if the type was already output
                   1380:        and its preferred name is the TYPE_DECL.  Else output type in full.
                   1381: 
                   1382:        * decl.c (pushdecl): Don't prefer typedef names to type tag names.
                   1383: 
                   1384:        * stor-layout.c (chain_type): Build chain in forward order.
                   1385: 
                   1386: 
                   1387:        * tm-3b1.h (ASM_OUTPUT_CASE_LABEL): Error getting length of table.
                   1388: 
                   1389:        * tm-3b1.h: #define SGS_3B1 was missing.
                   1390: 
                   1391:        * typecheck.c (build_compound_expr): Ignore non-volatile subexprs.
                   1392: 
                   1393:        * fold-const.c (fold): Simplify (unsigned) foo >= 0, etc.
                   1394: 
                   1395:        * stor-layout.c (layout_type): Set TYPE_PRECISION of ptr types.
                   1396: 
                   1397: Wed May  4 08:06:25 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1398: 
                   1399:        * parse.y: Don't use the Bison @ construct, since it makes parser slow.
                   1400: 
                   1401:        * decl.c (finish_function): Delete FILENAME and LINE args.
                   1402: 
                   1403:        * typecheck.c (digest_init): No pedantic warning for array="string".
                   1404: 
                   1405: Tue May  3 09:09:30 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1406: 
                   1407:        * toplev.c (main): Ignore `-Wcomment'.
                   1408:        * gcc.c: Pass -Wall to cpp (which treats it like -Wcomment).
                   1409: 
                   1410:        * tm-isi68.h: Greatly simplified; now works only with GAS.
                   1411: 
                   1412:        * tm-m68k.h (EMPTY_FIELD_BOUNDARY): now 16 (right on Sun, ISI and HP).
                   1413:        * tm-sun3.h: No need to redefine it.
                   1414: 
                   1415:        * decl.c (finish_struct): Don't ever make DECL_ALIGN smaller.
                   1416: 
                   1417:        * decl.c: Rename min, max to MIN, MAX.
                   1418: 
                   1419:        * typecheck.c (convert_for_assignment): Avoid warning if assigning
                   1420:        a `void *' from a `const void *'.
                   1421: 
                   1422:        * combine.c (FAKE_EXTEND_SAFE_P): Turn off for mem refs; avoid faults.
                   1423: 
                   1424: Mon May  2 07:28:27 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1425: 
                   1426:        * tm-vax.h: Support -mg switch to use g-float instead of d-float.
                   1427:        New macros TARGET_G_SWITCH, ASM_DOUBLE_CHAR.
                   1428:        Changes in TARGET_SWITCHES, ASM_OUTPUT_DOUBLE.
                   1429:        Define code `#' for PRINT_OPERAND.
                   1430:        * vax.md: use `#' in opcodes for doubleword float.
                   1431: 
                   1432:        * tm-vax.h: Define UDIVSI3_LIBCALL and UMODSI3_LIBCALL.
                   1433: 
                   1434:        * cccp.c (main, do_include): Implement -I- switch.
                   1435: 
                   1436:        * jump.c (jump_optimize): When hunting NOTE_INSN_FUNCTION_END,
                   1437:        skip final RETURN (found on the vax).
                   1438: 
                   1439:        * toplev.c (main): -Wall is equiv to all -W switches combined.
                   1440: 
                   1441:        * stmt.c (expand_decl, expand_end_bindings,
                   1442:        expand_{start,end}_function).  The -noreg treatment of `register' vars
                   1443:        is extended to vars used as addresses of vars in memory (varying-size
                   1444:        structures).
                   1445:        (use_variable): Emit USE for regs used in specified rtx.
                   1446: 
                   1447:        * cse.c (fold_cc0): Stack-frame addresses are always nonzero.
                   1448:        (fold_rtx): 0200 bit in prev_insn_cc0 means only zeroness is known.
                   1449: 
                   1450:        * parse.y (parmlist): poplevel needs 3 args.
                   1451: 
1.1       root     1452: Sun May  1 07:20:34 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1453: 
1.1.1.2   root     1454:        * decl.c (start_function): typo checking for incomplete return type.
                   1455: 
                   1456:        * emit-rtl.c (restore_reg_data): If a pseudo appears nowhere,
                   1457:        don't leave its slot empty; create a pseudo for that slot.
                   1458: 
1.1       root     1459:        * Version 1.21 released.
                   1460: 
                   1461:        * expr.c (expand_call): Merge duplicate code for structure_value_addr.
                   1462: 
                   1463:        * emit-rtl.c (restore_reg_data): Delete error check; it's legit for
                   1464:        a pseudo reg to appear nowhere in the rtl.
                   1465: 
                   1466: Sat Apr 30 07:35:31 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1467: 
                   1468:        * integrate.c (copy_rtx_and_substitute): Fix typo for arg_pointer_rtx.
                   1469: 
                   1470:        * decl.c (poplevel): Undo previous change with #if 0.
                   1471: 
                   1472:        * stmt.c: `struct nesting' now records the depth on the stack.
                   1473:        Each expand_start... must update and record the depth;
                   1474:        each expand_end... uses macro POPSTACK to pop.
                   1475:        This way, if a level isn't explicitly popped, it won't cause
                   1476:        circular structure.
                   1477: 
                   1478:        * dbxout.c (dbxout_type): Replace with main variant only if incomplete.
                   1479: 
                   1480:        * typecheck.c (build_unary_op): Test of `pedantic' was backwards.
                   1481: 
                   1482:        * expr.c (STACK_BYTES): Typo in definition.
                   1483: 
                   1484:        * typecheck.c (build_binary_op_nodefault): Rename code1 to code0,
                   1485:        and likewise for code2, tt1, tt2.
                   1486: 
                   1487:        * expr.c (expand_call): Wrong arg order for warning_with_decl.
                   1488: 
                   1489: Fri Apr 29 08:41:06 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1490: 
                   1491:        * integrate.c (copy_decl_tree): New arg is depth in recursion.
                   1492:        Always discard the outermost LET_STMT being copied; never discard any
                   1493:        others.  This way the copied LET_STMTs correspond to the copied NOTEs.
                   1494: 
                   1495:        * varasm.c (decode_rtx_const): For SYMBOL_REF, use string address
                   1496:        not address of the rtx.  Library fns have only one copy of the name
                   1497:        but many copies of the SYMBOL_REF.
                   1498: 
                   1499:        * expr.c (emit_call_1): New arg OLD_ARGS_SIZE is used to reset
                   1500:        current_args_size.
                   1501:        (emit_library_call, expand_call): Pass new arg; don't restore it here.
                   1502: 
                   1503:        * flow.c (life_analysis): Don't mark sp live at end if fn is empty.
                   1504: 
                   1505:        * parse.y (parse_or_identifiers_1): Handle `error' in here, not in
                   1506:        callers notype_declarator etc.  Also read the closeparen here.
                   1507: 
                   1508: Thu Apr 28 12:43:52 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1509: 
                   1510:        * expmed.c (expand_shift): In extzv strategy, handle the operand
                   1511:        predicates for operands 0, 1 and 3.  (Not needed for 2.)
                   1512:        * vax.md: extzv pattern for SImode op1 must recognize general_operand
                   1513:        since the pattern named "extzv" allows them.
                   1514: 
                   1515: Wed Apr 27 00:52:44 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1516: 
                   1517:        * expr.c (emit_call_1): New arg NEXT_ARG_REG describes # regs
                   1518:        used for passing args.
                   1519:        (emit_library_call, expand_call): Provide that argument.
                   1520: 
                   1521:        * explow.c (round_push): New fn: round arg up to STACK_BOUNDARY.
                   1522:        * expr.c (expand_builtin): Use round_push on size for __builtin_alloca.
                   1523:        * stmt.c (expand_decl): Likewise for variable-size objects.
                   1524:        * expr.c (expand_call): Likewise for args_size.var.
                   1525:        Also use STACK_BOUNDARY to round a constant arg-block size.
                   1526:        Pass emit_call_1 that rounded value.
                   1527:        (emit_library_call): Round arg_size with STACK_BOUNDARY.
                   1528:        * tm-spur.h: Define STACK_BOUNDARY instead of ROUND_CALL_BLOCK_SIZE.
                   1529:        * tm-m68k.h: Define STACK_BOUNDARY as 16.
                   1530: 
                   1531:        * expr.c (emit_call_1): Don't change current_args_size.
                   1532:        (emit_library_call, expand_call): Always restore current_args_size
                   1533:        to ambient value, after calling emit_call_1.
                   1534: 
                   1535:        * tm-hp9k320.h: Don't define USG here.
                   1536:        * config-hp9k3.h: New file.  USG defined here.
                   1537: 
                   1538:        * tm-3b1.h: #undef ASM_OUTPUT_ASCII (a defn came from tm-hp9k320.h).
                   1539: 
                   1540:        * decl.c (grokdeclarator primarily): Cast all RID_... to (int) before
                   1541:        using them in arithmetic.  Placates CC on Sequent.
                   1542: 
                   1543:        * emit-rtl.c (emit_jump_insn): Return proper value, for a SEQUENCE.
                   1544:        * emit-rtl.c (emit_call_insn): Handle SEQUENCE like emit_jump_insn.
                   1545: 
                   1546: Tue Apr 26 02:41:26 1988  Richard Stallman  (rms at lucky-charms.ai.mit.edu)
                   1547: 
                   1548:        * cccp.c (macroexpand): If traditional, don't disable called macro.
                   1549:        (macarg1): Was failing to count backslash-newline inside a string
                   1550:        in a macro arg as part of file's linenumber.
                   1551: 
                   1552: Mon Apr 25 18:46:53 1988  Richard Stallman  (rms at lucky-charms.ai.mit.edu)
                   1553: 
                   1554:        * jump.c (jump_optimize): Don't do April 20 optimization on first
                   1555:        iteration; let other simpler opts be done before this is considered.
                   1556: 
                   1557: Sun Apr 24 02:45:28 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1558: 
                   1559:        * tree.c (staticp): a CONSTRUCTOR can be static.
                   1560: 
                   1561:        * varasm.c (output_constant_def): Always return memref, not address.
                   1562: 
                   1563:        * decl.c (complete_array_type): New fn, make an array type complete
                   1564:        based on an initializer.
                   1565:        (finish_decl): Use complete_array_type.
                   1566:        * parse.y (expr_no_commas): When parsing a constructor,
                   1567:        Use complete_array_type on constructors for incomplete array types.
                   1568: 
                   1569:        * typecheck.c (digest_init, store_init_value,process_init_constructor):
                   1570:        It's now TREE_STATIC, not TREE_ADDRESSABLE, that records that all elts
                   1571:        in a CONSTRUCTOR are simple constants.
                   1572:        (digest_init): A CONSTRUCTOR with non-null type is treated as ordinary
                   1573:        expression, not as a braced initializer.
                   1574:        Allow init of an array from an array-valued expr; warn if pedantic.
                   1575:        * expr.c (expand_expr, CONSTRUCTOR case): Put in memory only if static.
                   1576:        Was making an extraneous level of MEM; output_constant_def does it all.
                   1577: 
                   1578:        * typecheck.c (build_unary_op): Allow ADDR_EXPR of static CONSTRUCTOR.
                   1579:        (default_conversion): Likewise.
                   1580:        (initializer_constant_valid_p): Constructor is ok if static.
                   1581: 
                   1582:        * gcc.c: Change -fnostd... to -nostd...
                   1583:        * cccp.c (main): Likewise.
                   1584: 
                   1585:        * Everywhere: Use REG_NOTE_KIND to get the kind of a reg note.
                   1586: 
                   1587:        * rtl.c (find_regno_note): New function.
                   1588:        * flow.c (flow_deadp): Deleted; caller uses find_regno_note.
                   1589:        * global-alloc.c (reg_dead_p): Deleted.
                   1590:        (global_conflicts): Use find_regno_note instead of reg_dead_p.
                   1591: 
                   1592:        * final.c (final) Use find_reg_note to look for a REG_INC.
                   1593:        * combine.c (insn_has_inc_p): deleted; callers use find_reg_note.
                   1594:        (try_combine): Use find_reg_note whenever looking for a REG_INC.
                   1595:        (regno_dead_p, remove_death): Check the REG_NOTE_KIND before assuming
                   1596:        that the datum in it is a REG.
                   1597:        * reload1.c (reload): Use find_reg_note to find a REG_EQUIV.
                   1598: 
                   1599:        * gcc.c: Don't delete .o files if not all compilations succeed.
                   1600:        (record_temp_file): New arg SUCCESS_ONLY--delete file only if succeed.
                   1601:        (delete_temp_files): New arg SUCCESS says compilation succeeded.
                   1602:        (store_arg): Now 3 possibilities for arg TEMPNAMEP; 2 = del on success.
                   1603:        (do_spec_1): For %d, set delete_this_arg to 2.
                   1604: 
                   1605:        * decl.c (poplevel): Warn about any still-incomplete type-tags.
                   1606: 
                   1607: Sat Apr 23 02:54:16 1988  Richard Stallman  (rms at rice-krispies.ai.mit.edu)
                   1608: 
                   1609:        * expr.c (expand_builtin): For alloca, round arg up to multiple
                   1610:        of PARM_BOUNDARY.  Also to convert it to Pmode unless it already is.
                   1611: 
                   1612:        * stor-layout.c (layout_union): Bug in 14 April change:
                   1613:        use caller-specified alignment as minimum, not as maximum.
                   1614: 
                   1615:        * parse.y (skip_white_space): Avoid infinite loop on unterm. comment.
                   1616: 
                   1617: Fri Apr 22 00:22:59 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1618: 
                   1619:        * cccp.c: Text following #else or #endif is just a warning.
                   1620:        (rescan): Digit-case was dropping into the $-case; reorder.
                   1621: 
                   1622:        * cccp.c (rescan): Comment start when -traditional was output as
                   1623:        `/*'; should be nothing.
                   1624: 
                   1625:        * jump.c (jump_optimize): Fix prev change:
                   1626:        do nothing if range1end == range2end;
                   1627:        don't lose any NOTEs when splicing.
                   1628: 
                   1629:        * flow.c (propagate-block): For CALL_INSN, clobber the call-used regs
                   1630:        only after mark_set_regs is done; avoids confusion about lifespan
                   1631:        of function value reg.
                   1632: 
                   1633:        * gcc.c: Pass -Wcomment to cpp.
                   1634: 
                   1635:        * cccp.c (main, rescan): If -Wcomment, warn if `/*' inside comment.
                   1636: 
                   1637:        * decl.c (duplicate_decls): Ignore `inline' decl following definition.
                   1638: 
                   1639:        * m68k.md (casesi): Split it up into subroutines, so insns emitted
                   1640:        by the call to memory_address (on 68000) come in the right place.
                   1641: 
                   1642:        * combine.c (record_dead_and_set_regs): Notice storing in a SUBREG.
                   1643: 
                   1644:        * integrate.c (expand_inline_function): Insn to copy a subroutine's
                   1645:        return-value was being output twice, once incorrectly.
                   1646: 
                   1647:        * reload.c (find_equiv_reg): A stack-push insn does not invalidate
                   1648:        an equiv for a goal in memory.
                   1649:        Any other write to memory does invalidate any goal in memory
                   1650:        (PARALLEL case failed to check for this).
                   1651: 
                   1652:        * expmed.c (expand_shift): In the extzv clause, force shifted value
                   1653:        out of memory if -fforce-mem.
                   1654: 
                   1655:        * print-tree.c (prtypeinfo): Some attributes were missing.
                   1656:        (dump): In ..._TYPE nodes, ignore the TREE_CHAIN field.
                   1657: 
                   1658:        * cse.c (note_mem_written): Pushing on stack does not invalidate mem.
                   1659: 
                   1660:        * vax.md (extv/andl peephole opt): Made incorrect code if output was
                   1661:        pushed on stack.  Added special case code.
                   1662:        (extv, extzv for SImode operand): Require register_operand.
                   1663: 
                   1664: Thu Apr 21 00:24:52 1988  Richard Stallman  (rms at corn-chex.ai.mit.edu)
                   1665: 
                   1666:        * stmt.c (assign_parms): Round current_function_pretend_args_size up.
                   1667: 
                   1668:        * integrate.c: `pushlevel' arg was missing.
                   1669: 
                   1670:        * dbxout.c (dbxout_type): Undo rest of March 29 change:
                   1671:        When a named type is first seen inside another type, output an xref
                   1672:        and let the real definition come out later.
                   1673:        It is strange that Sun dbx has sometimes appeared to demand
                   1674:        one strategy and sometimes appeared to demand the other.
                   1675: 
                   1676:        * typecheck.c (convert_for_assignment): Allow conversion to or from
                   1677:        `const void *', etc., unless pedantic.
                   1678: 
                   1679:        * decl.c (get_parm_types): For `foo (void){}', set last_function_parms
                   1680:        to nil so store_parm_decls won't lose.
                   1681: 
                   1682:        * combine.c (subst): (plus (plus X N) -N) => X.
                   1683: 
                   1684:        * explow.c ({anti_,}adjust_stack): Don't make a copy of
                   1685:        `stack_pointer_rtx'.
                   1686: 
                   1687:        * integrate.c (expand_inline_function): Typo testing for the
                   1688:        USE that indicates a CALL_INSN's value is being returned.
                   1689: 
                   1690:        * expr.c (expand_builtin, alloca case): Copy arg to reg before
                   1691:        adjusting stack, to avoid invalid insns on some machines.
                   1692: 
                   1693: Wed Apr 20 00:15:14 1988  Richard Stallman  (rms at rice-krispies.ai.mit.edu)
                   1694: 
                   1695:        * typecheck.c (build_binary_op_nodefault): When shortening,
                   1696:        get_narrower may make no change because ARGn is already narrow.
                   1697:        In this case, set UNSIGNEPn from ARGn's type.
                   1698: 
                   1699:        * typecheck.c: Rename ARG1,ARG2 to ARG0,ARG1, etc. in several fns.
                   1700: 
                   1701:        * tm-vax.h: Turn off continuation on DBX output.
                   1702: 
                   1703:        * typecheck.c (build_function_call): Don't change __builtin_ffs to an
                   1704:        FFS_EXPR.  Note that __builtin_alloca has always made a CALL_EXPR.
                   1705:        * expr.c (expand_builtin): New function expands all CALL_EXPRs that
                   1706:        are really built-in functions.
                   1707:        (preexpand_calls): Do nothing to a CALL_EXPR for a built-in function.
                   1708: 
                   1709:        * loop.c (count_loop_regs_set): Don't move a reg that is in a CLOBBER.
                   1710: 
                   1711:        * stupid.c (stupid_mark_refs): Was getting hard reg's mode from
                   1712:        the wrong place.
                   1713: 
                   1714:        * rtl.c (note_stores): Typo in checking vector elt for SET vs CLOBBER.
                   1715: 
                   1716:        * stmt.c (expand_end_bindings): If restoring stack level, 
                   1717:        first do pending stack adjust (so it won't be done erroneously after).
                   1718:        (expand_goto): likewise.
                   1719: 
                   1720:        * rtl.h: LABEL_NUSES was an rtx.  It should be an int.
                   1721:        * stmt.c (expand_label, expand_goto): Delete frobbing with LABEL_NUSES;
                   1722:        the value stored there was the same as the CODE_LABEL rtx.
                   1723: 
                   1724:        * jump.c (jump_optimize): Detect  if (foo) ...; else { ... break;}
                   1725:        and change to  if (! foo) { ... break;} else ...; so can drop out.
                   1726:        (next_label): New fn returns the next label after given insn.
                   1727: 
                   1728: Tue Apr 19 21:30:05 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1729: 
                   1730:        * flow.c (insn_dead_p): Delete special handling for stack ptr.
                   1731:        (mark_set_regs, mark_used_regs): Likewise.
                   1732:        (life_analysis): Mark stack ptr live at end of fn if necessary.
                   1733:        (propagate_block): Mark stack ptr live leading up to a CALL_INSN.
                   1734: 
                   1735:        * jump.c (jump_optimize): #if 0 around stack-adjust-deletion code.
                   1736: 
                   1737:        * cse.c (fold_rtx): Change const_arg from an array to 3 separate
                   1738:        scalars for the first three operands.
                   1739:        Handle SIGN_EXTEND and ZERO_EXTEND.
                   1740: 
                   1741:        * integrate.c (copy_rtx_and_substitute): If arg is 0, return 0.
                   1742:        (expand_inline_function): Separate vars for old pattern and new insn.
                   1743: 
                   1744:        * expr.c (expand_call): Set TREE_ADDRESSABLE if call is not inlined.
                   1745: 
                   1746: Tue Apr 19 02:25:22 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1747: 
                   1748:        * Version 1.20 released.
                   1749: 
                   1750:        * tm-ns32k.h: Define new reg class GEN_OR_FLOAT_REGS
                   1751:        so that GENERAL_REGS and FLOAT_REGS have a union.
                   1752: 
                   1753:        * tm-ns32k.h (GO_IF_LEGITIMATE_ADDRESS): Recognize a stack-push.
                   1754:        * ns32k.md: Many constraints must now allow or reject pushes.
                   1755:        Delete the special patterns for pushing.
                   1756: 
                   1757: Mon Apr 18 06:02:39 1988  Richard Stallman  (rms at rice-krispies.ai.mit.edu)
                   1758: 
                   1759:        * reload1.c (forget_old_reloads): For a multiword hard reg,
                   1760:        forget old reloads for each word.
                   1761: 
                   1762:        * reload.c (find_reloads): Typo in calling push_replacement.
                   1763: 
                   1764:        * tm-ns32k.h (HARD_REGNO_MODE_OK): Failed to allow fp regs for SFmode.
                   1765: 
                   1766: Sun Apr 17 01:21:35 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1767: 
                   1768:        * tm-sequent.h (PRINT_OPERAND): Handle absolute integer memaddress.
                   1769: 
                   1770:        * ns32k.md: Add DImode push insns.  Add QImode and HImode push insns.
                   1771:        Supply missing statement in movsf.
                   1772: 
                   1773:        * dbxout.c (dbxout_type): Don't contin before 1st field of struct.
                   1774: 
                   1775:        * dbxout.c (dbx_continue): Use DBX_CONTIN_CHAR instead of backslash.
                   1776: 
                   1777:        * loop.c (scan_loop): Ov vax, the "loop-entry jump" can be a return,
                   1778:        in which case perhaps there is no label following it.
                   1779:        Detect phoniness of loop before looking for that label.
                   1780: 
                   1781:        * decl.c (init_decl_processing): Builtin fn names start with `__'.
                   1782: 
                   1783:        * typecheck.c (shorten_compare): Warn about constant result only in
                   1784:        cases like (char)x < 0x80, where old C compilers made it -0x80.
                   1785: 
                   1786:        * vax.md: All jbs/jbc/jlbs/jlbc patters with op0 in SImode
                   1787:        must reject mode-dependent memory addresses.
                   1788: 
                   1789:        * recog.c (mode_independent_operand): Test for general operand
                   1790:        that doesn't have a mode-dependent memory address.
                   1791: 
                   1792:        * varasm.c (assemble_function): ASM_DECLARE_FUNCTION_NAME, if def,
                   1793:        is now responsible for outputting the function name as a label.
                   1794: 
                   1795: Sat Apr 16 05:02:55 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1796: 
                   1797:        * cccp.c (do_xifdef): Warn about punctuation or other junk in argument.
                   1798:        Warn about no argument.  If pedantic, warn if arg starts with digit.
                   1799:        If traditional, ignore all after first non-idchar and never warn.
                   1800: 
                   1801: Thu Apr 14 01:12:59 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1802: 
                   1803:        * integrate.c (expand_inline_function): Typo for addressable parms.
                   1804: 
                   1805:        * cse.c (insert_regs): Copying half a DImode into half of another
                   1806:        does not make the two DImode regs equivalent.
                   1807: 
                   1808:        * recog.c (general_operand): Was failing to accept symbol_ref:SI
                   1809:        when MODE arg was VOIDmode.
                   1810: 
                   1811:        * expr.c (preexpand_calls): For RTL_EXPR, do nothing.
                   1812: 
                   1813:        * decl.c (start_enum, build_enumerator): Remember default for next one
                   1814:        as a tree node (so the high-half isn't lost in a negative one).
                   1815: 
                   1816:        * stor-layout.c (layout_{record,union}): Pay attn to initial value
                   1817:        of TYPE_ALIGN in computing final alignment.
                   1818:        (layout_union): Round size up to multiple of the alignment.
                   1819: 
                   1820:        * decl.c (finish_struct): Don't alter size after type is laid out.
                   1821:        Instead, set TYPE_ALIGN before layout_type.
                   1822: 
                   1823:        * reload1.c (choose_reload_targets): Introduce reg_has_output_reload.
                   1824:        If there are two separate reloads (one in and one out)
                   1825:        for the same (hard or pseudo) reg, always set reg_last_reload_reg
                   1826:        based on the output reload.
                   1827: 
                   1828: Wed Apr 13 21:26:16 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1829: 
                   1830:        * reload.c (find_reloads_address_1): Always barf if a "constant"
                   1831:        register is autoincremented.
                   1832: 
                   1833:        * parse.y (structsp): suspend_momentary before start_enum;
                   1834:        else some nodes made by start_enum might be momentary.
                   1835: 
                   1836:        * stmt.c (expand_start_case): New arg is nominal type for comparison
                   1837:        (which is the promoted type of the index expression).
                   1838:        (pushcase): Always convert VALUE to that nominal type
                   1839:        before validating it.
                   1840:        * parse.y (case stmt): Promote each case-value before pushcase.
                   1841:        * typecheck.c (c_expand_start_case): Promote the index-expr
                   1842:        to determine the nominal type, before get_narrower.
                   1843: 
                   1844: Wed Apr 13 12:43:08 1988  Chris Hanson  (cph at kleph)
                   1845: 
                   1846:        * tm-hp9k320.h: Define ASM_FORMAT_PRIVATE_NAME.  HPUX asm forbids
                   1847:        `.' in identifiers, so use `___' (there is some danger in this choice).
                   1848: 
                   1849: Tue Apr 12 23:26:48 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1850: 
                   1851:        * local-alloc.c (block_alloc): Make 1 extra slot in regs_live_at.
                   1852: 
                   1853:        * stmt.c (optimize_bit_field): Function moved from reload1.c.
                   1854:        When need to generate a SIGN_EXTEND or ZERO_EXTEND, make it a separate
                   1855:        insn and use gen_extend_insn to make it.
                   1856:        * optabs.c (gen_extend_insn): New fn, construct body of an insn
                   1857:        to extend Y and store in X.
                   1858: 
                   1859: Mon Apr 11 19:20:57 1988  Richard Stallman  (rms at rice-krispies.ai.mit.edu)
                   1860: 
                   1861:        * decl.c (finish_decl): Error if static var has variable size.
                   1862: 
                   1863:        * parse.y (yylex): Warn if int const is out of range.
                   1864: 
                   1865:        * parse.y: New keyword __alignof.
                   1866:        * typecheck.c (c_alignof): Given a type, return its alignment in bytes.
                   1867: 
                   1868:        * typecheck.c (c_sizeof{,_nowarn)): Don't return integer_one_node;
                   1869:        use build_int to make sure we get something with type `sizetype'.
                   1870: 
                   1871:        * Support variable-sized structures (containing var-sized arrays).
                   1872: 
                   1873:        * stmt.c (assign_parms): Handle parms whose size varies.
                   1874:        Use `memory_address' when constructing memrefs to args;
                   1875:        no need to set `invalid_stack_slot'.
                   1876:        Don't make a REG_EQUIV note for a scalar arg at variable offset.
                   1877:        * stor-layout.c (genop, build_int): No longer `static'.
                   1878: 
                   1879:        * stor-layout.c (convert_units): Optimize ceil (ceil(x,2)*2, 4) etc.
                   1880: 
                   1881:        * stmt.c (expand_decl): Don't abort if var-sized object has init.
                   1882:        Convert variable size from units of DECL_SIZE_UNIT to units of bytes.
                   1883: 
                   1884:        * expr.c (emit_push_insn): Arg ARGS_SO_FAR is now an rtx.
                   1885:        Pay attention to ARGS_ADDR even if machine has push insns.
                   1886:        (expand_call): Handle variable-sized arguments.
                   1887:        If have any such, push entire arg-block in advance.
                   1888:        Record each arg's offset during first loop and don't change args_size
                   1889:        during the actual pushing loop; this way the actual pushing loop
                   1890:        works regardless of arg-order if arg-block was pushed in advance.
                   1891:        (push_block): Copy SIZE to reg unless it's a reg or constant.
                   1892: 
                   1893:        * expmed.c (expand_divmod): If converting CEIL_DIV to FLOOR_DIV,
                   1894:        make new pseudo for incremented value, to help cse understand.
                   1895: 
                   1896: Sun Apr 10 00:07:45 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1897: 
                   1898:        * expr.c (emit_library_call): Two dumb bugs calling emit_call_1.
                   1899: 
                   1900:        * dbxout.c (dbxout_symbol): Handle case of (MEM (REG frameptr)).
                   1901: 
                   1902:        * cccp.c (skip_if_group): Ignore quote-chars if -traditional.
                   1903:        (rescan): If -traditional, don't output a space for a comment.
                   1904:        (handle_directive): If not -traditional, output a space for a comment.
                   1905: 
                   1906: Sat Apr  9 21:26:51 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1907: 
                   1908:        * decl.c (get_parm_types): `void' type is error, except as entire list.
                   1909:        * parse.y (parmlist_1): `void,...' is error.
                   1910: 
                   1911:        * typecheck.c (pointer_int_sum, pointer_diff):
                   1912:        Use an integer type with at least POINTER_SIZE bits.
                   1913:        * expr.c (expand_expr, ARRAY_REF): Likewise.
                   1914:        * tree.c (type_precision): Prec of a pointer is POINTER_SIZE.
                   1915:        (convert_to_pointer): Directly convert any int w/ width==POINTER_SIZE.
                   1916:        Other int types convert via an int of that width.
                   1917:        (convert_to_integer): Pointers convert via an int of that width.
                   1918: 
                   1919:        * decl.c (init_decl_processing): Use INT_TYPE_SIZE, if def,
                   1920:        to set width of `int' and `unsigned int'.
                   1921:        (make_index_type): Give new type the width of a long int.
                   1922: 
                   1923:        * tm-m68k.h: Add new -mshort which controls TARGET_SHORT.
                   1924:        * tm-m68k.h: Define INT_TYPE_SIZE depending on TARGET_SHORT.
                   1925: 
                   1926: Fri Apr  8 05:02:59 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1927: 
                   1928:        * typecheck.c (require_complete_type): Fix typo in detection of `void'.
                   1929:        (build_function_call): Fix backward test to allow `void' values.
                   1930: 
                   1931:        * dbxout.c (dbxout_tags): Output each tag once even if type is defined.
                   1932: 
                   1933:        * m68k.md (movstrictqi): Reject addr-reg always, for both operands.
                   1934: 
                   1935:        * tm-vax.h (STRUCTURE_SIZE_BOUNDARY): Make this always 8, for BSD.
                   1936:        * tm-ultrix.h: New file, overriding STRUCTURE_SIZE_BOUNDARY.
                   1937:        [This change has been taken out; tm-ultrix.h is now equivalent to
                   1938:        tm-vax.h.  I must have been confused when testing PCC.]
                   1939: 
                   1940:        * integrate.c (expand_inline_function): Don't let inline_target
                   1941:        be nonzero in BLKmode.
                   1942: 
                   1943:        * decl.c (grokdeclarator): Const array parm becomes ptr-to-const.
                   1944: 
                   1945: Thu Apr  7 05:02:41 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1946: 
                   1947:        * genoutput.c (bcopy, bzero): Renamed to mybcopy, mybzero
                   1948:        so variation in C library and config.h won't affect the results.
                   1949:        * genrecog.c (bzero): likewise.
                   1950:        * genextract.c (bcopy): Fn deleted; used only in a string constant. 
                   1951: 
                   1952:        * varasm.c (force_const_mem): Fix typo in arg decl.
                   1953: 
                   1954:        * toplev.c (compile_file): init_file with main_input_filename
                   1955:        so dbx output doesn't lack N_SOL symbols.
                   1956: 
                   1957:        * cccp.c (rescan) [CPLUSPLUS]: Put out // comments as // comments.
                   1958: 
                   1959: Wed Apr  6 14:06:38 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1960: 
                   1961:        * expr.c: Delete SLOW_ZERO_EXTEND conditionals added March 3.
                   1962:        Now that enums types can be unsigned, this isn't needed.
                   1963: 
                   1964:        * emit-rtl.c (emit_jump_insn): Handle SEQUENCEs.
                   1965: 
                   1966:        * genemit.c (gen_expand): Use emit_jump_insn, emit_label, emit_barrier
                   1967:        when the insn rtl requires it.
                   1968: 
                   1969:        * m68k.md (subsi3): Prefer to avoid reverse-subtraction alternative.
                   1970: 
                   1971:        * stmt.c (expand_end_case): Let CASE_DROPS_THROUGH control what to
                   1972:        emit after the table.
                   1973:        * tm-vax.h: Define CASE_DROPS_THROUGH.
                   1974: 
                   1975: Tue Apr  5 15:47:10 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   1976: 
                   1977:        * genemit.c (gen_exp): Handle vectors within exprs.
                   1978: 
                   1979:        * stmt.c (expand_end_case): Pass 5th arg (default_label) to gen_casesi.
                   1980:        * m68k.md: Define casesi insn rather than tablejump insn.
                   1981: 
                   1982:        * cccp.c (skip_if_group): For validate_else, pass BP (end of cmd name).
                   1983:        Don't call validate_else if do_else or do_endif will detect error.
                   1984: 
                   1985:        * Bug: inline fcns can refer to the return reg with a strict_low_part
                   1986:        which confuses expand_inline_function.  Fix is to change return reg
                   1987:        into inline_target *everywhere* except in or right after a call.
                   1988:        * integrate.c (copy_rtx_and_substitute): Delete special case for SET.
                   1989:        Replace return-value hard regs with INLINE_TARGET in all contexts.
                   1990:        (expand_inline_function): special handling for insn after a CALL_INSN
                   1991:        if it copies the function value out.
                   1992:        Allow notes and stack adjust insns to intervene
                   1993:        between the CALL_INSN and the value-copy.
                   1994: 
                   1995:        * expr.c (emit_call_1): New name for gen_call_1.
                   1996: 
                   1997:        * Bug: ({...}) insns were in wrong place for a subexpression
                   1998:        after a sequence point, as in x ? y : ({...}).
                   1999:        * tree.def: New tree-code RTL_EXPR holds a sequence.
                   2000:        * expr.c (expand_expr): Handle RTL_EXPR by emitting the sequence.
                   2001:        * stmt.c (expand_{start,end}_stmt_expr): Use emit_to_sequence
                   2002:        to make a sequence from everything within the ({...}).
                   2003:        (expand_{start,end,emit}_delayed_expr): Delete these functions.
                   2004:        * parse.y (`for'-statements): Don't call them; nothing special needed.
                   2005: 
                   2006:        * parse.y (yylex): Handle syntax L"..." and L'...'
                   2007:        (combine_strings): Handle wide strings being combined.
                   2008:        * typecheck.c (digest_init): Reject wide string as init for char array.
                   2009:        Allow it for an int array, but don't allow a narrow string.
                   2010:        * decl.c (init_decl_processing): New var int_array_type_node.
                   2011: 
                   2012:        * parse.y: Define keyword `noalias'.
                   2013:        * parse.h: Define RID_NOALIAS.
                   2014: 
                   2015:        * typecheck.c (compparms): Not all parmlists match an empty one;
                   2016:        call `compparms1' to filter them.
                   2017: 
                   2018:        * decl.c (groktypename): Remove special case for `void' as parameter.
                   2019:        (get_parm_types): Special case for list of one decl with type void.
                   2020: 
                   2021:        * decl.c (build_enumerator): Give enum constants the type `int'.
                   2022:        Variable `current_enum_type' eliminated.
                   2023:        (finish_enum): No need to repeat `fixup_unsigned_type'
                   2024:        since the precision has not changed.
                   2025:        * stor-layout.c (layout_type): Allow enum types to be unsigned.
                   2026: 
                   2027:        * emit-rtl.c (unshare_all_rtl): Unshare contents of all reg-notes.
                   2028: 
                   2029:        * parse.y (check_newline): filename is optional in #-lines.
                   2030: 
                   2031: Mon Apr  4 14:36:54 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   2032: 
                   2033:        * typecheck.c (shorten_compare): When data type determines the value,
                   2034:        eval the nonconstant arg anyway if it has side effects.
                   2035:        (build_conditional_expr): When merging `foo *' with `void *',
                   2036:        also allow `const void *'.  Result type has merged set of qualifiers.
                   2037:        (qualify_type): Merge qualifiers of two types.
                   2038: 
                   2039:        * decl.c (get_parm_types): Store any tags defined in parmlist
                   2040:        into `last_function_parm_types'.
                   2041:        (store_parm_decls): Add those tags into the current binding level.
                   2042: 
                   2043:        * parse.y (parmlist, parmlist_or_identifier): Pass 0 to pushlevel;
                   2044:        no binding levels in C should be transparent to tags.
                   2045: 
                   2046:        * 3b1 support:
                   2047:        * tm-3b1.h: New file.
                   2048: 
                   2049:        * m68k.md: Add HPUX_ASM conditionals for shift-by-24-and-compare.
                   2050:        In one of the dbra patterns, a HPUX_ASM conditional was backwards.
                   2051:        (movhi) [SGS_3B1]: Define the LI... label as in MIT syntax.
                   2052:        (addsi3) [SGS]: Syntax for base-displacement differs from MOTOROLA.
                   2053:        (subsi3) [SGS]: likewise.
                   2054:        (tablejump) [ASM_OUTPUT_CASE_LABEL]: Use 6, not 2, as displacement.
                   2055:        This assumes ASM_OUTPUT_CASE_LABEL on 68k is used for a `swbeg'.
                   2056: 
                   2057:        * final.c (final): Use ASM_OUTPUT_CASE_LABEL (if defined) to output
                   2058:        any CODE_LABEL followed by an ADDR_VEC or ADDR_DIFF_VEC.
                   2059:        It has 4 args; 4th is the insn which is the ADDR_VEC or ADDR_DIFF_VEC.
                   2060: 
                   2061:        * tm-*.h for 68000 (PRINT_OPERAND_ADDRESS): For unscaled indexing in
                   2062:        fetch from a branch table, use L and LI symbols as in the scaled case.
                   2063: 
                   2064:        * cccp.c: If SCCS_DIRECTIVE, define #sccs as no-op.
                   2065: 
                   2066:        * integrate.c (output_inline_function): Real start of function
                   2067:        is FIRST_PARM_INSN, not FIRST_FUNCTION_INSN.
                   2068: 
                   2069:        * tree.c (build_string): String contents must be saveable (for
                   2070:        inline fcn).
                   2071: 
                   2072:        * cse.c (cse_insn): Don't forget to set dest_hash_code when dest
                   2073:        is a stack slot (and so its address is not being optimized).
                   2074: 
                   2075:        * emit-rtl.c (restore_reg_data_1): reg_rtx_no must be 1+ largest REGNO.
                   2076: 
                   2077:        * m68k.md (non-SImode bit-field insns): Change constraint to "o,d"
                   2078:        so a nonoffsetable memref is handled by reloading its address
                   2079:        but a register can still be handled.
                   2080: 
                   2081:        * toplev.c (main): Execute OVERRIDE_OPTIONS, if it's defined.
                   2082: 
                   2083: Sat Apr  2 00:55:21 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2084: 
                   2085:        * expr.c (convert_move): Handle a SUBREG in direct truncation case.
                   2086: 
                   2087:        * cse.c (lookup_for_remove): Don't test machine mode of registers:
                   2088:        Storing in (REG:SI 0) invalidates (REG:DF 0).
                   2089: 
                   2090:        * decl.c (pushlevel): New arg, nonzero means this level is for
                   2091:        variables only, not for tags.  All calls changed.
                   2092:        (lookup_tag): Even if THIS_LEVEL_ONLY, skip variables-only levels.
                   2093:        (pushtag): Define it in the first non-variables-only level.
                   2094: 
                   2095:        * dbxout.c (dbxout_type): Undo Mar 29 change, in the DBX_NO_XREFS case.
                   2096:        So now each struct or union will contain only nameless cross-refs
                   2097:        to any others it uses.  The prior change is still in effect when
                   2098:        DBX_NO_XREFS is not defined.
                   2099: 
                   2100:        * Implement variable array bounds for parameters.
                   2101:        * decl.c (poplevel): Don't crash if DECL_NAME gives 0.
                   2102:        * typecheck.c (comptypes): A variable array bound matches anything.
                   2103:        * parse.y (parmlist): Call pushlevel, then pushdecl each parm as it
                   2104:        is parsed; then poplevel after using get_parm_types to extract the
                   2105:        results of the parmlist.
                   2106:        * decl.c (get_parm_types): New function; reverse the current decls,
                   2107:        put them in last_function_parms, and return a list of their types.
                   2108:        (grokparms): Arg is now an idlist or a typelist.  Do nothing if latter.
                   2109:        (push_parm_decl): New function, like {start,finish}_decl combined
                   2110:        for a parm in a parmlist.
                   2111: 
                   2112:        * dbxout.c (dbxout_symbol): Ignore sym if its DECL_RTL is 0.
                   2113: 
                   2114:        * symout.c (symout_block_symbols): Ignore sym if type is error_mark.
                   2115: 
                   2116: Fri Apr  1 11:41:21 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2117: 
                   2118:        * expr.c (prepare_call_address): New function; given two rtx's
                   2119:        for function and context, copy the context to the right hard reg,
                   2120:        put the function address in the right place and return an rtx for it.
                   2121:        (gen_call_1): No longer do those things.  Delete args CONTEXT, PROTECT.
                   2122:        (emit_library_call, expand_call): Call `prepare_call_address'.
                   2123:        In between that and `gen_call_1', USE the parm registers.
                   2124: 
                   2125:        * tm-hp9k320.h (ASM_OUTPUT_*): Flush uses of output_arith_constant.
                   2126: 
                   2127:        * varasm.c (assemble_variable): Use ASM_FORMAT_PRIVATE_NAME
                   2128:        to make the name for a local static variable.
                   2129:        * tm-m68k.h, tm-vax.h, tm-ns32k.h, tm-spur.h:
                   2130:        Define ASM_FORMAT_PRIVATE_NAME.  Use `.', not `$', to separate.
                   2131: 
                   2132:        * tm-m68k.h, tm-ns32k.h (FIX_FRAME_POINTER_ADDRESS):
                   2133:        To refer to stack ptr, use stack_pointer_rtx, not a copy.
                   2134: 
                   2135:        * tree.c (build_real_from_string): Function deleted.
                   2136:        * parse.y (yylex): Use build_real and atof.
                   2137: 
                   2138:        * parse.y: Allow string concatenation in arg of asm.
                   2139: 
                   2140:        * parse.y (yylex): Always allow `$' in ident, but warn if pedantic.
                   2141:        * tm-vms.h: Delete DOLLARS_IN_IDENTIFIERS (no longer tested).
                   2142: 
                   2143:        * cccp.c (rescan, do_define, initialize_random_junk):
                   2144:        Always allow `$', but warn if pedantic.
                   2145:        (main): If -t, set `traditional'.
                   2146:        (collect_expansion): If `traditional', no special handling for quotes
                   2147:        and no whitespace added at end of macro definition.
                   2148: 
                   2149:        * expr.c (compare, compare1): Last arg to compare_constants
                   2150:        must be a size in bits.
                   2151: 
                   2152: Thu Mar 31 00:31:52 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2153: 
                   2154:        * expmed.c (expand_mult, expand_divmod, extract_fixed_bit_field):
                   2155:        Reject function return register as target if may need to read it.
                   2156:        (Reading the return register in an inline function doesn't work.)
                   2157: 
                   2158:        * decl.c (start_function): Delete extra arg to `error'.
                   2159: 
                   2160:        * emit-rtl.c (last_parm_insn): Delete this unused var.
                   2161: 
                   2162:        * make-cc1.com: New version from Kashtan.
                   2163: 
                   2164:        * integrate.c (expand_inline_function): Always set up an INLINE_TARGET
                   2165:        for a function that returns a nonvoid nonBLK value.
                   2166:        Since `pushlevel' and `poplevel' are called, must also call
                   2167:        `expand_{start,end}_bindings' to make a pair of NOTEs.
                   2168:        Let them handle USEs at end of scope of formal parameter copies.
                   2169: 
                   2170:        * integrate.c (expand_inline_function): In a new-style CALL_INSN,
                   2171:        don't change the result reg into INLINE_TARGET.  Also,
                   2172:        generate a move insn after the call only if INLINE_TARGET is non-0.
                   2173: 
                   2174:        * integrate.c (copy_decl_tree): Don't crash if DECL_RTL is 0.
                   2175: 
                   2176:        * integrate.c (copy_for_inline): Don't treat `return' rtx's specially.
                   2177: 
                   2178:        * stmt.c (expand_{start,end,emit}_delayed_expr):
                   2179:        New fns to handle ({...})'s in expressions output not where parsed
                   2180:        (such as third expression in a `for' statement).
                   2181:        * parse.y: Call them to handle third expression in a `for'.
                   2182: 
                   2183:        * decl.c (duplicate_decls): Result is `inline' if either OLD or NEW is.
                   2184: 
                   2185:        * emit-rtl.c (emit_note): Return the note, or 0 if none.
                   2186:        * stmt.c (expand_start_bindings): Use emit_note's value.
                   2187: 
                   2188: Wed Mar 30 12:48:22 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2189: 
                   2190:        * obstack.c (_obstack_begin): If ALIGNMENT is 0, use default.
                   2191:        Compute default for the alignment of a `double'.
                   2192:        * obstack.h (obstack_{begin,init}): Pass 0 for the alignment.
                   2193: 
                   2194:        * flow.c (mark_used_regs): Discard multiple SUBREGs, STRICT_LOW_PARTs.
                   2195: 
                   2196:        ** Call insns that return values are now represented as
                   2197:        (set (reg ...) (call ...)), not just (call ...).
                   2198: 
                   2199:        * *.md: Define a "call_value" insn pattern.
                   2200: 
                   2201:        * tm-m68k.h, tm-vax.h, tm-ns32k.h: (NOTICE_UPDATE_CC):
                   2202:        These insns invalidate the CC.
                   2203: 
                   2204:        * local-alloc.c (combine_regs): #if 0 special treatment of
                   2205:        function value hard reg.
                   2206:        (wipe_dead_reg): If hard reg, call reg_is_born so that the death
                   2207:        will not be ignored.
                   2208:        (reg_is_set): For reg that dies in this insn, mark it dead from now on
                   2209:        and post_mark it live after this insn only.
                   2210: 
                   2211:        * combine.c (try_combine): Don't allow a call insn as I1 or I2.
                   2212: 
                   2213:        * loop.c (count_loop_regs_set): Move CALL_INSN into a separate
                   2214:        clause.  When finding regs that are function addresses, handle
                   2215:        both old and new format call insns.
                   2216: 
                   2217:        * flow.c (insn_dead_p): A SET that contains a CALL can't be dead.
                   2218:        (volatile_refs_p): Any CALL constitutes a volatile ref.
                   2219:        (mark_used_regs): If setting a reg from a volatile ref,
                   2220:        treat it like setting a reg whose value will be used.
                   2221: 
                   2222:        * expr.c (gen_call_1): New arg VALREG if nonzero means generate
                   2223:        a call_value insn which stores in VALREG.
                   2224:        (expand_call): Use `hard_function_value' to make the VALREG arg
                   2225:        unless expression has type `void'.
                   2226: 
                   2227:        * expr.c (emit_library_call): New 2nd arg OUTMODE is mode of result.
                   2228:        (So can give gen_call_1 the proper value-register.)
                   2229:        All callers (here and optabs.c) pass this arg.
                   2230: 
                   2231:        * cse.c (canon_hash): Consider all CALL rtx's volatile.
                   2232: 
                   2233:        ** end of change in representation of call insns.
                   2234: 
                   2235:        * stmt.c (expand_asm_operands): Replace complex lvalues with
                   2236:        SAVE_EXPRs here
                   2237:        * typecheck.c (c_expand_asm_operands):  rather than here.
                   2238: 
                   2239:        * typecheck.c (pointer_diff): Fix typo preventing use of FLOOR_DIV_EXPR
                   2240:        when dividing by power of 2.
                   2241:        (build_c_cast): Flush unused locals.
                   2242:        (store_init_value): likewise.
                   2243:        (process_init_constructor): Delete unused 4th arg `for_static'.
                   2244: 
                   2245:        * toplev.c (fatal_io_error): Arg to fprintf was missing.
                   2246: 
                   2247:        * tm-m68k.h (LEGITIMIZE_ADDRESS): Flush extra arg to `emit_move_insn'.
                   2248: 
                   2249:        * decl.c: Delete some unused local vars.
                   2250: 
                   2251:        * stor-layout.c (layout_decl): `packed_size' now unsigned.
                   2252: 
                   2253: Tue Mar 29 14:47:07 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2254: 
                   2255:        * Version 1.19 released.
                   2256: 
                   2257:        * loop.c (may_trap_p): Nonzero if X is a division that might trap.
                   2258:        (scan_loop): If insn might trap, move only if loop always executes it.
                   2259: 
                   2260:        * dbxout.c (dbxout_type): Never output a cross-ref for
                   2261:        a type whose definition is known.  Sun dbx won't accept them.
                   2262: 
                   2263: Mon Mar 28 12:34:46 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2264: 
                   2265:        * tm-vms.h (TARGET_DEFAULT): Default is PCC alignment.
                   2266:        The VMS compile driver controls the real default.
                   2267: 
                   2268:        * typecheck.c (c_expand_return): Don't ignore return value
                   2269:        when its type is void.
                   2270: 
                   2271:        * final.c (final): Forget the condition codes after an `asm'.
                   2272: 
                   2273:        * typecheck.c (build_binary_op_nodefault): Warn about ptr < 0
                   2274:        even if not pedantic, but not if traditional.
                   2275: 
                   2276:        * typecheck.c (convert_for_assignment): Don't warn about
                   2277:        pointers volatile * vs nonvolatile * if -fvolatile specified.
                   2278: 
                   2279:        * decl.c (store_parm_decls): Among the old-style parm decls
                   2280:        there can legitiately be other decls!  For example, if a parm
                   2281:        is declared `enum {foo, bar} x;', there are decls for `foo' and `bar'.
                   2282:        Don't let anything but a PARM_DECL match a parm name;
                   2283:        pass all the other decls through into the lexical context.
                   2284: 
                   2285:        * jump.c (jump_optimize): When deleting stack adjusts before a
                   2286:        jump-to-return, don't be fooled by intervening NOTEs.
                   2287: 
                   2288:        * tm-sequent.h (PRINT_OPERAND): Output (MEM (MEM (REG))) properly.
                   2289:        * output-ns32k.c (print_operand_address): Output (MEM (REG))
                   2290:        properly; output stack-pointer as `tos'.
                   2291: 
                   2292:        * flow.c (find_use_as_address): Reject uses within operand 0
                   2293:        of a ZERO_EXTRACT or SIGN_EXTRACT reference.  It's hard to reload
                   2294:        an autoincrement inside these because they can refer to multiple bytes.
                   2295: 
                   2296:        * reload.c (find_reloads): `o' in constraint means any memref
                   2297:        (except auto-increment) is acceptable with reloading.
                   2298:        Braino: Clear BADOP, not BAD.
                   2299: 
                   2300:        * reload.c (push_reloads): Use rtx_equal_p (via macro MATCHES)
                   2301:        when considering reuse of an old reload.  Otherwise equal values
                   2302:        may get reloaded into different registers, and two MEMs that
                   2303:        originally matched may fail to match once reloaded.
                   2304: 
                   2305:        * m68k.md (sign_extract and zero_extract insns):
                   2306:        If operand 0 is QI or HImode, don't allow register--only `o'
                   2307:        (except in some bftst patterns where bitpos is < 8).
                   2308:        And change `m' to `o' in all these patterns.
                   2309: 
                   2310: Sun Mar 27 15:32:54 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2311: 
                   2312:        * expr.c (expand_expr, case CONSTRUCTOR):
                   2313:        Not all aggregates are BLKmode; use the type's mode.
                   2314: 
                   2315:        * gcc.c: Pass -y* to ld.
                   2316: 
                   2317:        * cse.c (struct hash): New member `equivalence_only'.
                   2318:        (insert): Initialize it.
                   2319:        (cse_insn): Set it to 1 when src_eqv is inserted.
                   2320:        When finding cheapest equivalent of something,
                   2321:        skip elts that are marked with `equivalence_only'.
                   2322: 
                   2323:        * decl.c (duplicate_decls): Don't call `layout_type'
                   2324:        if the type is `error_mark_node'.
                   2325: 
                   2326:        * decl.c (implicitly_declare): If decl will be file-scope,
                   2327:        make sure it's a permanent node, and its associated data too.
                   2328: 
                   2329: Sat Mar 26 15:48:50 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2330: 
                   2331:        * flow.c (insn_dead_p, mark_used_regs): Storing a reg via a
                   2332:        ZERO_EXTRACT or SIGN_EXTRACT is dead if the reg isn't needed afterward.
                   2333: 
                   2334:        * stmt.c (expand_start_function): Set current_function_name
                   2335:        to the name of this function.
                   2336:        * tm-vms.h (MAYBE_VMS_FUNCTION_PROLOGUE): Use current_function_name.
                   2337: 
                   2338:        * expr.c (expand_increment): A SUBREG in op0 can also a be a copy.
                   2339: 
                   2340:        * ns32k.md: Correct range of args for `adjspb' insn.
                   2341:        Use `adjspw' when appropriate.
                   2342:        New pattern for `lprd' insn.
                   2343:        Change some `const_int' predicates to GET_CODE tests.
                   2344: 
                   2345:        * expr.c (expand_call): Eval function before copying args to hard regs.
                   2346: 
                   2347:        * tree.c (make_node, copy_node): Don't get length of a REAL_CST
                   2348:        from tree_code_length.
                   2349: 
                   2350:        * expmed.c (extract_fixed_bit_field): In memory-word case, abort
                   2351:        if tm.h parms say word could fail to be well-aligned.
                   2352:        * tm-ns32k.h: Define STRUCTURE_SIZE_BOUNDARY so they will be aligned.
                   2353:        * tm-vax.h: Define STRUCTURE_SIZE_BOUNDARY since Unix CC seems to.
                   2354: 
                   2355:        * tm-vms.h (CPP_PREDEFINES): Predefine __GNU__ and __GNUC__.
                   2356: 
                   2357: Fri Mar 25 13:23:27 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2358: 
                   2359:        * gcc.c (main): Handle SIGHUP, SIGTERM.
                   2360: 
                   2361:        * expmed.c (expand_bit_and): Don't clobber OP1 when trying andcb.
                   2362: 
                   2363: Thu Mar 24 21:59:09 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2364: 
                   2365:        * stmt.c (assign_parms): Get size of BLKmode local from the type,
                   2366:        not the mode.
                   2367:        (expand_function_start): Init frame_offset before calling assign_parms.
                   2368: 
                   2369: Wed Mar 23 23:50:37 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2370: 
                   2371:        * expr.c (emit_push_insn): When making a move insn,
                   2372:        go via emit_move_insn; else fails to put constants into memory.
                   2373: 
                   2374: Tue Mar 22 15:45:10 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2375: 
                   2376:        * expr.c (expand_increment): Flush special case for register_operand;
                   2377:        actually call the predicate whatever it is.
                   2378: 
                   2379:        * genemit.c (gen_expand): Make `operands' a local variable,
                   2380:        not a global static one, in the `gen_...' function.
                   2381:        Avoids lossage when one `gen_...' fcn calls another indirectly.
                   2382: 
                   2383:        * genoutput.c (output_epilogue): Don't give printf a null string.
                   2384: 
                   2385: Mon Mar 21 15:41:42 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2386: 
                   2387:        * expmed.c (store_bit_field) [HAVE_insv]:
                   2388:        Force VALUE1, not VALUE, into a register.
                   2389: 
                   2390:        * expmed.c (store_fixed_bit_field): Width of mask for clearing
                   2391:        the bit-field depends on mode of OP0.
                   2392: 
                   2393:        * ns32k.md (branch and store-flag insns):
                   2394:        Test cc_prev_status, not cc_status.
                   2395: 
                   2396:        * expmed.c (extract_bit_field): Delete unused var `omode'.
                   2397: 
                   2398:        * dbxout.c (dbxout_type, dbxout_tag): Use the main variant
                   2399:        of the specified type.
                   2400: 
                   2401:        * reload.c (find_reloads): When an alternative succeeds without reload,
                   2402:        initialize goal_alternative_matches from this_alternative_matches.
                   2403: 
                   2404: Sun Mar 20 17:58:00 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2405: 
                   2406:        * tm-sun*.h: Don't predefine `m68k'; Sun's compiler does not.
                   2407: 
                   2408: Fri Mar 18 13:48:29 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2409: 
                   2410:        * reload.c (find_reloads): Set up goal_alternative_matches
                   2411:        *after* the label `finish'.
                   2412: 
                   2413:        * stmt.c (assign_parms): GET_MODE_SIZE needs a mode, not an rtx.
                   2414: 
                   2415:        * recog.c (constrain_operands): Set global var `which_alternative'
                   2416:        to indicate which of the alternatives this insn matches.
                   2417: 
                   2418:        * typecheck.c (commontype): long int vs unsigned int
                   2419:        gives long unsigned, if long and int are the same width.
                   2420: 
                   2421: Thu Mar 17 15:39:45 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2422: 
                   2423:        * emit-rtl.c, tree.c: include local version of varargs.h.
                   2424: 
                   2425:        * decl.c (start_function): Clear TREE_EXTERNAL and set TREE_STATIC
                   2426:        here rather than in finish_function.  Affects the case of
                   2427:           `extern foo ();  static foo (a) {...}'
                   2428: 
                   2429:        * gcc.c: Handle -fnostdinc and -fnostdlib switches in specs.
                   2430: 
                   2431:        * cccp.c (main): Handle -fnostdinc: don't put default dirs
                   2432:        on the chain to be searched.
                   2433: 
                   2434:        * cccp.c (error, warning, error_with_line): No longer print
                   2435:        charpos within file; lineno is enough.
                   2436: 
                   2437: Wed Mar 16 16:56:36 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2438: 
                   2439:        * expmed.c (expand_inc, expand_dec): Handy new subroutines
                   2440:        to generate x+=y or x-=y, given x and y as rtl.
                   2441:        * expmed.c (expand_divmod): Use them instead of gen_{add2,sub2}_insn.
                   2442: 
                   2443:        * expr.c (emit_move_insn): Return the move insn emitted.
                   2444:        Eliminate the code here to move a DImode or DFmode by pieces.
                   2445: 
                   2446:        * emit-rtl.c (emit_insn): Return-value was wrong if emit_to_sequence;
                   2447:        cannot use `last_insn' in that case.
                   2448: 
                   2449:        * regclass.c, stupid.c, local-alloc.c, global-alloc.c:
                   2450:        Some vars of type HARD_REG_SET should be `register' only
                   2451:        if HARD_REG_SET is a macro (ie a scalar).
                   2452: 
                   2453:        * expr.c (move_block_from_reg): New function, converse of
                   2454:        move_block_from_reg.
                   2455:        * stmt.c (assign_parms): If a BLKmode arrives in regs,
                   2456:        copy to a stack slot using move_block_from_reg.
                   2457: 
                   2458: Tue Mar 15 17:33:22 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2459: 
                   2460:        * regclass.c (regclass): Don't convert to two-operand insns
                   2461:        unless optimizing.
                   2462: 
                   2463:        * varasm.c (decode_rtx_const, const_hash_rtx): Fix typos.
                   2464: 
                   2465:        * stmt.c (fixup_var_1): Don't alter insn moving VAR to or from
                   2466:        a subreg of a register.
                   2467: 
                   2468:        * cse.c (fold_rtx): Don't fold if result is not LEGITIMATE_CONSTANT_P.
                   2469:        Construct all results in new local variable NEW; then test that
                   2470:        and decide whether to return it or the original rtx.
                   2471: 
                   2472:        * cse.c (cse_insn): When SRC_EQV is non-0 but set[0] has been
                   2473:        cleared, don't insert SRC_EQV in hash table.
                   2474: 
                   2475:        * All insns emitted by a define_expand become part of the SEQUENCE:
                   2476:        * SEQUENCE now contains a vector of insns, not of bodies.
                   2477:        * insn-emit.c (add_insn): If `emit_to_sequence' nonzero, add the
                   2478:        insn to a separate chain, `sequence_first_insn'.
                   2479:        (gen_sequence): Take everything on that chain and make a SEQUENCE.
                   2480:        (emit_insn): Handle SEQUENCE differently since elts are now insns.
                   2481:        (emit_insn_{before,after}): Handle SEQUENCE.
                   2482:        (classify_insn): #if 0.
                   2483:        * genemit.c (gen_expand): emit all the insns, then call gen_sequence
                   2484:        to make the return value.
                   2485:        Define two macros DONE and FAIL for use in a DEFINE_EXPAND:
                   2486:        Use DONE to inhibit emission of the pattern of the DEFINE_EXPAND.
                   2487:        Use FAIL to make the gen_... function return 0.
                   2488: 
                   2489: Mon Mar 14 12:47:28 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2490: 
                   2491:        * expr.c (expand_expr): Extend the don't-sign-extend-enums hack
                   2492:        to COMPONENT_REF.  (See 3 March.)
                   2493: 
                   2494:        * tm-*.h (FUNCTION_ARG, etc.) New argument NAMED
                   2495:        is nonzero for a named arg, zero for an anonymous extra arg.
                   2496:        * expr.c (expand_call): Pass 1 for NAMED if appropriate.
                   2497:        * expr.c (emit_library_call): Pass 1 for NAMED.
                   2498:        * stmt.c (assign_parms): Pass 1 for NAMED.
                   2499: 
                   2500:        * cccp.c: Test __GNUC__, not __GNU__.
                   2501: 
                   2502:        * integrate.c (copy_and_substitute_rtx):
                   2503:        Replacing a MEM parm with the parm value, convert mode if mismatch.
                   2504:        Always use VOIDmode when generating SETs.
                   2505:        Take heed of FIRST_PARM_OFFSET and distinguish arg-pointer
                   2506:        from frame-pointer when they are different.
                   2507:        (expand_inline_function): Handle (RETURN) insns, by creating a
                   2508:        return_label which is output after the integrated code.
                   2509: 
                   2510:        * parse.y (yylex): Condition for ignoring `inline' was backwards.
                   2511: 
                   2512:        * flow.c (mark_used_regs): Ignore STRICT_LOW_PART, so that
                   2513:        an insn that sets STRICT_LOW_PART (and its source values) may be dead.
                   2514:        (propagate_block): Always pass 1 for strict_low_ok to insn_dead_p.
                   2515: 
                   2516:        * optabs.c (emit_unop_insn): Don't make a REG_RETVAL note.
                   2517:        Change above deletes dead STRICT_LOW_PART stores without one.
                   2518: 
                   2519:        * optabs.c (expand_binop, expand_unop): If the library address
                   2520:        is to be put in a pseudoreg, do it here, and make the REG_RETVAL
                   2521:        note point after that.
                   2522: 
                   2523:        * expr.c (emit_library_call): Never defer stack-pops.
                   2524:        Deletion of the library call by flow.c loses if they are deferred.
                   2525: 
                   2526:        * cse.c (cse_insn): Handling of 68k's zero-extend was broken:
                   2527:        it made the actual source and the REG_EQUAL source equivalent.
                   2528:        * If dest is a STRICT_LOW_PART, ignore the actual source and use
                   2529:        the REG_EQUAL source in its place.  src_eqv's mode may be different
                   2530:        from src's, so use proper mode in lookups or inserts for src_eqv.
                   2531:        * Don't forget to set src_eqv_elt if src_eqv already has an elt.
                   2532:        * On use_related_value for src_eqv, use src_eqv_elt.
                   2533: 
                   2534:        * toplev.c (main_input_filename): Name of file mentioned in first
                   2535:        #-line in the input.
                   2536:        (compile_file): Pass it to dbxout_init as 2nd arg.
                   2537:        * dbxout.c (dbxout_init): Use 2nd arg to make the N_SO symbol.
                   2538:        * parse.y (check_newline): Store main_input_filename.
                   2539: 
                   2540:        * expr.c (move_block_to_reg): New function, copies a MEM:BLK
                   2541:        to consecutive registers.
                   2542:        (use_regs): New function to emit a USE for each reg in a series.
                   2543:        (expand_call): Use the two new functions when a precomputed BLKmode
                   2544:        arg is passed entirely in regs.
                   2545:        (emit_push_insn): Use move_block_to_reg when PARTIAL > 0.
                   2546:        Also, don't subtract USED from SIZE twice.
                   2547:        Use plus_constant to add ARGS_SO_FAR so can use indexing on stack ptr.
                   2548: 
                   2549:        * varasm.c (assemble_integer_zero): Use rtx 0, not tree 0,
                   2550:        to go with prev change in ASM_OUTPUT_INT.
                   2551: 
                   2552: Sun Mar 13 01:16:17 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2553: 
                   2554:        * varasm.c (const_hash, compare_constant_1, record_constant_1):
                   2555:        Handle NOP_EXPR and CONVERT_EXPR in constant expressions.
                   2556: 
                   2557:        * optabs.c (expand_binop, expand_unop): When widening operands,
                   2558:        those with VOIDmode (like CONST_INT) may be left alone.
                   2559: 
                   2560: Sat Mar 12 01:09:24 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2561: 
                   2562:        * varasm.c (assemble_variable): When making a .comm or .lcomm,
                   2563:        round size up to multiple of BIGGEST_ALIGNMENT.
                   2564: 
                   2565:        * obstack.c (_obstack_newchunk): Eliminate fencepost causing copying
                   2566:        to access the word past the end of the existing object.
                   2567: 
                   2568:        * tm-vax.h, tm-ns32k.h: Define {INIT_,}CUMULATIVE_ARGS
                   2569:        and upgrade FUNCTION_ARGS for new calling convention.
                   2570: 
                   2571:        * gcc.c: If -O, define __OPTIMIZE__.
                   2572:        (do_spec_1): %c now scans SIGNED_CHAR_SPEC: define __CHAR_UNSIGNED__
                   2573:        when appropriate whether or not it is the default.
                   2574: 
                   2575: Fri Mar 11 16:49:25 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2576: 
                   2577:        * parse.y: Define YYDEBUG.
                   2578: 
                   2579:        * rtl.c (rtx_unstable_p): New function, same as old rtx_varies_p.
                   2580:        * explow.c (stabilize): Use rtx_unstable_p.
                   2581:        * rtl.c (rtx_varies_p): Ignore `unchanging' (undoing previous change
                   2582:        in this function) because `unchanging' doesn't enable cse to compare
                   2583:        the value with any particular constant value.
                   2584:        * rtl.c (insn_store_addr_varies_p): Delete, since not used.
                   2585: 
                   2586:        * hard-reg-set.h (COPY_HARD_REG_SET, etc.) non-scalar case:
                   2587:        Rename and rearrange temp variables to avoid name conflicts with args.
                   2588: 
                   2589:        * regclass.c (reg_class_record): Don't smash class to GENERAL_REGS
                   2590:        and don't exit prematurely, when `r' or `g' is seen.  Must merge
                   2591:        GENERAL_REGS with previously determined desired class.
                   2592: 
                   2593:        * expr.c (expand_call) [no PUSH_ROUNDING]: When pushing the arg
                   2594:        block, try to reuse some of the pending_stack_adjust.
                   2595: 
                   2596:        * cse.c: qty_const can now hold values (PLUS frame_pointer integer).
                   2597:        Effect is that storing into a structure doesn't invalidate
                   2598:        mem refs to scalar stack variables via addresses in registers.
                   2599:        (insert): Load such values into qty_const, like true constants.
                   2600:        (fold_rtx): Ignore qty_const if it isn't really a constant.
                   2601: 
                   2602:        * expr.c (expand_expr) VAR_DECL: Copy DECL_RTL before calling
                   2603:        change_address, so it isn't permanently clobbered.
                   2604: 
                   2605:        * stmt.c (fixup_var_refs_1): Make sure the stack slot address
                   2606:        is valid by calling fixup_stack_1 each time it is substituted.
                   2607: 
                   2608:        * stmt.c (fixup_stack_1): Return the altered rtx.
                   2609:        If it's a MEM in the stack, return a copy of it.
                   2610: 
                   2611:        * stmt.c (fixup_stack_slots): #if 0.
                   2612:        * stmt.c (expand_finish_function): Don't call fixup_stack_slots
                   2613:        because fixup_stack_1 is called elsewhere when necessary.
                   2614: 
                   2615:        * reload.c (find_reloads_address): New arg is location of the MEM
                   2616:        whose address is being reloaded.  So we copy the MEM if it
                   2617:        is one that can be shared.  New arg 0 means no need to copy the MEM.
                   2618:        All callers pass the new arg.
                   2619: 
                   2620:        * stmt.c (assign_parms): Determine parm stack-size from
                   2621:        the DECL_ARG_TYPE, not from the TREE_TYPE.
                   2622:        Else loses when parm is declared `float' but passed as `double'.
                   2623: 
                   2624:        * emit-rtl.c (make_safe_from): Constants are already safe.
                   2625:        Use proper machine mode for temp reg when needed.
                   2626: 
                   2627: Thu Mar 10 14:35:14 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2628: 
                   2629:        * expr.c (emit_push_insn): Don't pass wrong type to plus_constant
                   2630:        (case where there is no PUSH_ROUNDING).
                   2631: 
                   2632:        * expr.c (expand_call): Round partial[i] down to multiple of
                   2633:        PARM_BOUNDARY before subtracting it from arg size on stack.
                   2634:        Compute these sizes just once and keep them in vector `arg_size'.
                   2635:        * expr.c (emit_push_insn): Handle `partial' uniformly, in accord
                   2636:        with this new convention for how it affects the stack size.
                   2637:        * stmt.c (assign_parms): Round NREGS down to PARM_BOUNDARY likewise.
                   2638: 
                   2639:        * obstack.h (obstack_free macro) [Not __GNUC__ but __STDC__]:
                   2640:        Don't cast result of (obstack_free) to (int); just ignore it.
                   2641: 
                   2642:        * reload.c (find_reloads): Initialize operand_reloadnum.
                   2643: 
                   2644:        * optabs.c (emit_unop_insn): New argument CODE, used to make
                   2645:        a REG_EQUAL note from operand OP0 if more than one insn results.
                   2646:        Also a REG_RETVAL note.
                   2647:        * expr.c (convert_move): Pass CODE arg to emit_unop_insn.
                   2648:        * flow.c (propagate_block): Use insn_dead_p to decide whether
                   2649:        to handle a REG_RETVAL note by skipping some insns.
                   2650:        Always pass 1 for STRICT_LOW_OK for an insn that has a REG_RETVAL note.
                   2651:        Handle case where REG_RETVAL points at an insn that's deleted.
                   2652:        * flow.c (insn_dead_p): New operand STRICT_LOW_OK says an insn
                   2653:        that sets STRICT_LOW_PART may be considered dead.
                   2654: 
                   2655:        * expr.c (expand_expr): Once again canonicalize X-C to X+(-C).
                   2656:        Change on March 1 made it stop doing this.
                   2657: 
                   2658: Wed Mar  9 01:25:35 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2659: 
                   2660:        * loop.c (move_movables): Don't always mark the moved reg
                   2661:        as equivalent to a constant value: not if it is being cleared
                   2662:        to zero-extend something or if it is used outside the loop.
                   2663: 
                   2664:        * expr.c (move_by_pieces_1): Finish last change.
                   2665: 
                   2666:        * stmt.c (assign_parms): Update stack_args_size properly.
                   2667:        Figure FIRST_PARM_OFFSET when making the stack mem refs.
                   2668: 
                   2669:        * cse.c (insert): Build the related_value lists in the opposite order
                   2670:        so that the oldest element in the chain is the one that follows
                   2671:        the most basic element.
                   2672: 
                   2673:        * expr.c (expand_expr): COMPONENT_REF case: criterion for
                   2674:        converting the the result is if MODE1 (its mode of arrival) isn't
                   2675:        a mode we want.
                   2676: 
                   2677:        * toplev.c (rest_of_compilation): Fix typo setting TREE_ASM_WRITTEN.
                   2678: 
                   2679: Tue Mar  8 13:18:37 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2680: 
                   2681:        * cse'ing of library calls.
                   2682: 
                   2683:        * expr.h: type `optab' is now a ptr to a struct.
                   2684:        The old contents are now the `handlers' element.
                   2685:        The `code' element gives the RTL code for the kind of expression
                   2686:        this optab makes (PLUS for add_optab, etc.)
                   2687:        Every var formerly declared `struct optab *' is now just `optab'.
                   2688: 
                   2689:        * optabs.c (init_optab, init_optabs): New function to init an optab
                   2690:        and set its `code'.  Used in init_optabs.
                   2691: 
                   2692:        * optabs.c (expand_binop, expand_unop): Use the `code' field
                   2693:        to add a REG_EQUAL note to the insn that copies a libcall's
                   2694:        value into a pseudo.  Also a REG_RETVAL note pointing at the
                   2695:        first insn for setting up args for the call.
                   2696: 
                   2697:        * cse.c (cse_insn): Process REG_EQUIV and REG_EQUAL datum almost like
                   2698:        another set-src; put the actual src into the equivalence class of that.
                   2699: 
                   2700:        * flow.c (propagate_block): If a dead insn has a REG_RETVAL reg-note,
                   2701:        either ignore or delete all the insns back to the insn the REG_ARG
                   2702:        note points to.
                   2703: 
                   2704:        * local-alloc.c (block_alloc): Don't refrain from allocating a
                   2705:        "constant" register if the constant value isn't ok for an immediate op.
                   2706: 
                   2707: 
                   2708:        * dbxout.c (CONTIN): If DBX_CONTIN_LENGTH is <= 0, do nothing.
                   2709: 
                   2710:        * cccp.c: Extra default include dirs for C++.
                   2711:        * cccp.c (main): For -M, strip dirs from object file name.
                   2712: 
                   2713:        * rtl.c (find_reg_note): New function.
                   2714: 
                   2715:        * expmed.c (store_fixed_bit_field): Don't AND with VALUE
                   2716:        if VALUE's original mode had no more bits than we want.
                   2717: 
                   2718:        * expr.c (emit_library_call): Use varargs.
                   2719: 
                   2720:        * integrate.c (copy_and_substitute_rtx): Recognize arg_pointer_rtx
                   2721:        and translate it just like frame_pointer_rtx.
                   2722: 
                   2723: Mon Mar  7 00:48:33 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2724: 
                   2725:        * expmed.c (extract_fixed_bit_field):
                   2726:        Shift counts were wrong for narrow MODE in signed case.
                   2727:        Do the sign-extending shifts in the narrowest mode possible.
                   2728:        Reduce big-endian case to little-endian case.
                   2729:        Delete SLOW_ZERO_EXTEND conditional.
                   2730: 
                   2731:        * Implement constants in memory for RISC machines
                   2732:        with limited abilities for immediate args and constant addresses.
                   2733: 
                   2734:        * genoutput.c (output_epilogue): Empty predicate-name
                   2735:        is output as 0 in insn_operand_predicate.
                   2736: 
                   2737:        * expr.c (expand_expr): Change 4th arg to an `enum expand_modifier'
                   2738:        Value EXPAND_SUM corresponds to old nonzero 4th arg.
                   2739:        Value EXPAND_CONST_ADDRESS means ok to return an invalid MEM
                   2740:        whose address is a constant.  Changes for this case in ADDR_EXPR,
                   2741:        COMPONENT_REF and ..._DECL.
                   2742: 
                   2743:        * varasm.c (output_arith_constant): Function deleted.
                   2744:        * tm-*.h: (ASM_OUTPUT_{INT,SHORT,CHAR}): 2nd arg is now an RTX
                   2745:        and output it using `output_addr_const'.
                   2746:        * varasm.c (output_constant): Change uses of those macros.
                   2747: 
                   2748:        * varasm.c (init_const_rtx_hash_table): Initialize constant pool
                   2749:        for a new function.  Called from `expand_function_start'.
                   2750:        * varasm.c (force_const_mem): Turn a constant rtx into a MEM rtx
                   2751:        which refers to the constant pool.  Other new subroutines too.
                   2752:        (force_const_double_mem): Use force_const_mem to make the MEM.
                   2753:        (immed_real_const): No longer record the REAL_CST node in the rtx.
                   2754: 
                   2755:        * explow.c (force_reg): If arg is a constant and not legitimate,
                   2756:        put it in the constant pool with force_const_mem.
                   2757:        Mark the register as equivalent to the constant value.
                   2758:        * expr.c (emit_move_insn): Likewise.
                   2759:        * explow.c (break_out_mem_refs): Use force_reg to put into a reg.
                   2760:        * explow.c (memory_address): Likewise.
                   2761:        * expr.c (expand_expr): ADDR_EXPR case: likewise.
                   2762: 
                   2763:        * expr.c (expand_call): Do force_reg on each register-operand
                   2764:        so it will go through a pseudo and can be cse'd.
                   2765: 
                   2766:        * recog.c (immediate_operand, nonmemory_operand, general_operand):
                   2767:        For constant operands, use LEGITIMATE_CONSTANT_P to decide value.
                   2768:        * tm-*.h: Define LEGITIMATE_CONSTANT_P.
                   2769: 
                   2770:        * reload1.c (reload): Invalid constants can't go in reg_equiv_constant.
                   2771: 
                   2772: Sun Mar  6 22:49:06 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2773: 
                   2774:        * reload.c (push_reloads): If IN occurs within OUT,
                   2775:        don't reuse an existing input-only reload.  Otherwise would lose on
                   2776:        (set (mem (plus R C)) (plus R C1)) if R is available in a spill reg.
                   2777: 
                   2778:        * reload1.c (choose_reload_targets): Don't choose an inherited
                   2779:        reload register that's in use for another reload.
                   2780:        Without this, above change doesn't have an effect.
                   2781: 
                   2782:        * Implement the `unchanging' flag in MEM and REG rtx's.
                   2783:        Also simplify code with a new subroutine `change_address'.
                   2784: 
                   2785:        * emit-rtl.c (change_address): Return new memory ref like an old
                   2786:        one but with specified mode and address.
                   2787:        * expmed.c (extract{,_split,_fixed}_bit_field): Use change_address.
                   2788:        (store{,_split,_fixed}_bit_field): Likewise.
                   2789:        * expr.c (store_expr, expand_expr): Likewise.
                   2790: 
                   2791:        * expr.c (move_by_pieces): Args now memrefs, not addresses.
                   2792:        Eliminate the FROM_VOL and TO_VOL args since the memrefs indicate.
                   2793:        Change the structure `struct move_by_pieces' similarly.
                   2794:        (move_by_pieces_1): Same changes; use change_address.
                   2795:        (emit_block_move, emit_push_insn): Calls to move_by_pieces changed.
                   2796: 
                   2797:        * integrate.c (copy_rtx_and_substitute): Use change_address;
                   2798:        handle ->unchanging field.
                   2799: 
                   2800:        * rtl.c (rtx_varies_p): Regs or memrefs with ->unchanging don't vary.
                   2801:        (copy_rtx): Perserve ->unchanging.
                   2802:        (print_rtx): Print ->unchanging as /u.
                   2803: 
                   2804:        * stmt.c (expand_decl): Set ->unchanging on `const' decls.
                   2805:        (fixup_memory_subreg): Use change_address.
                   2806:        (assign_parms): Record in the rtl which parms are volatile or const.
                   2807: 
                   2808:        * varasm.c (assemble_variable): Set ->unchanging on `const' decls.
                   2809:        (output_constant_def): Always set ->unchanging for constant refs.
                   2810: 
                   2811:        * cse.c (canon_hash): Don't treat a MEM as "in memory"
                   2812:        if its ->unchanging bit is set.
                   2813: 
                   2814:        * loop.c (invariant_p): A REG or MEM with ->unchanging is invariant
                   2815:        (for a MEM, the address must be invariant).
                   2816: 
                   2817: Sat Mar  5 13:22:11 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2818: 
                   2819:        * genconfig.c (walk_insn_part): DO consider MATCH_DUPs
                   2820:        when calculating MAX_RECOG_OPERANDS.
                   2821:        (gen_expand): define_expand is now different from define_insn.
                   2822:        Compute max # SETs or CLOBBERs for any one sub-insn in a define_expand,
                   2823:        instead of summing them all.  And don't count the MATCH_DUPs at all.
                   2824: 
                   2825:        * genemit.c (max_operand_1): Record largest opno in a MATCH_DUP
                   2826:        separately from largest in a MATCH_OPERAND.
                   2827:        (gen_expand): An operand # with only MATCH_DUPs gets
                   2828:        a local variable in the gen_ function we output.
                   2829: 
                   2830:        * integrate.c (save_for_inline): Delete vestige of NOTE_INSN_IS_DECL.
                   2831: 
                   2832:        * cse.c (invalidate): Handle subregs.
                   2833:        (cse_ins, invalidate_from_clobbers): Do call `invalidate' for subregs.
                   2834:        (insert_regs): When assigning one subreg from a like one,
                   2835:        make the two regs equivalent.
                   2836:        (cse_insn): Do call insert_regs when dest is a subreg.
                   2837: 
                   2838:        * expr.c (expand_call): Precompute all args going via hard regs
                   2839:        since even arithmetic could require a library call.
                   2840: 
                   2841: Fri Mar  4 15:48:17 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2842: 
                   2843:        * stor-layout.c (layout_parms): Function deleted.
                   2844:        * stmt.c (expand_function_start): Don't call it.
                   2845: 
                   2846:        * stmt.c (assign_parms):
                   2847:        stack_args_size counts size of args so far passed on stack.
                   2848:        Use PARM_BOUNDARY when counting it; derive stack offsets from it.
                   2849:        Set current_function_args_size from it.
                   2850: 
                   2851:        When an arg is split between regs and stack, make stack space
                   2852:        for the rest of it, and count it.
                   2853:        In a varargs function, push the last arg onto the stack.
                   2854:        When an arg is passed in regs alone, don't remember a stack slot
                   2855:        for it, and if it needs one, use assign_stack_local.
                   2856: 
                   2857:        Set DECL_OFFSET to the stack offset, or -1 if parm came in regs.
                   2858: 
                   2859:        * expr.c (expand_call): Anonymous args of a varargs function
                   2860:        are always passed on the stack.
                   2861: 
                   2862:        * varasm.c (force_const_double_mem): Copy the MEM rtx
                   2863:        if it may need to be smashed by reloading.
                   2864: 
                   2865:        * genemit.c (gen_expand): define_expand must have nonempty pattern
                   2866:        even though, due to `return' statements in the code-to-run,
                   2867:        that pattern may not be used to generate code.
                   2868: 
                   2869: Thu Mar  3 17:08:43 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2870: 
                   2871:        * expr.c (expand_expr): If supposed to sign-extend an enum
                   2872:        which is never negative, zero-extend instead (unless SLOW_ZERO_EXTEND).
                   2873:        (store_expr): Likewise.
                   2874: 
                   2875:        * reload.c (find_reloads): 'm' for CONST_DOUBLE: clear BADOP, not BAD.
                   2876:        After force_const_double_mem, do find_reloads_toplev on the MEM.
                   2877:        (find_reloads_address): Handle constant addresses (on machines
                   2878:        that don't allow them).
                   2879: 
                   2880:        * final.c (set_current_gdbfile): New fn, get the gdbfile structure
                   2881:        for specified filename.
                   2882:        (output_source_line): Use set_current_gdbfile for the file.
                   2883:        * varasm.c (assemble_variable): Call set_current_gdbfile
                   2884:        for the declaration's source file, so GDB won't ignore the file.
                   2885: 
                   2886:        * varasm.c (force_const_double_mem): Build a new REAL_CST node
                   2887:        and get its data type from the machine mode of the CONST_DOUBLE.
                   2888:        (immed_real_const): Don't save the REAL_CST tree node.
                   2889:        * typecheck.c (get_floating_type): Return float type for given mode.
                   2890: 
                   2891:        * integrate.c (expand_inline_function): Ignore the (USE (REG...))
                   2892:        (for the return-register) at the end of the inline function.
                   2893:        After a CALL_INSN, imagine the (SET (REG ...) (REG ...)) for
                   2894:        the return-register if the return-register isn't explicitly used.
                   2895: 
                   2896: Wed Mar  2 22:08:49 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2897: 
                   2898:        * typecheck.c (build_array_ref): Do default_conversion on INDEX.
                   2899: 
                   2900: Tue Mar  1 15:49:34 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2901: 
                   2902:        * expr.c (expand_call): Always get a SYMBOL_REF for a fixed function.
                   2903:        If may be alloca, set may_call_alloca.
                   2904:        (gen_call_1): Never put a SYMBOL_REF through `memory_address';
                   2905:        but if function cse is wanted, just copy it to a register.
                   2906:        If NO_FUNCTION_CSE is defined, never do function cse.
                   2907: 
                   2908:        * expr.c (init_expr): New function, does init_queue and inits
                   2909:        other things.
                   2910: 
                   2911:        * stmt.c (expand_function_start): Call init_expr, not init_queue.
                   2912: 
                   2913:        * optabs.c (expand_binop): Don't clobber OP0 and OP1
                   2914:        if may call delete_insns_since later.
                   2915: 
                   2916:        * expr.c (emit_library_call): PUSH_ARGS_REVERSE test was backwards.
                   2917: 
                   2918:        * cse.c (cse_insn): Do canon_reg on the size and position operands
                   2919:        in a ZERO_EXTEND or SIGN_EXTEND that is a destination.
                   2920: 
                   2921:        * tm-*.h: Define SLOW_BYTE_ACCESS.
                   2922:        * expmed.c ({store,extract}_fixed_bit_field):
                   2923:        If SLOW_BYTE_ACCESS, get/set all bit fields from full words.
                   2924: 
                   2925:        * combine.c (subst): Simplify
                   2926:        (zero_extend:SI (subreg:QI (zero_extract ...))).
                   2927:        * combine.c (simplify_and_const_int): Simplify
                   2928:        (and (zero_extract ...) (const_int ...)).
                   2929: 
                   2930:        * local-alloc.c (qty_compare{,_1}): Test of qty_phys_sugg was reversed.
                   2931:        (combine_regs): If one pseudo gets two suggested hard regs
                   2932:        (one at birth and one at death), prefer the one from birth
                   2933:        unless we see at death that it's no good.
                   2934: 
                   2935:        * expr.c (expand_expr): Ignore sum_ok unless mode is Pmode.
                   2936:        Don't use force_operand unless sum_ok is set.
                   2937: 
                   2938: Mon Feb 29 19:23:50 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2939: 
                   2940:        * expr.c (emit_move_insn): When a CONST_DOUBLE needs moving
                   2941:        by pieces, force it into memory, unless it is dconst0_rtx,
                   2942:        in which case each piece is const0_rtx.
                   2943:        (emit_push_insn): Likewise.  Also, write code for pushing a
                   2944:        non-BLK mode which has no "mov" insn defined, but only
                   2945:        in the case where there is no PUSH_ROUNDING.
                   2946: 
                   2947:        * expr.c (do_tablejump): Put constant term in address last.
                   2948: 
                   2949:        * toplev.c (xrealloc): On error, call fatal instead of abort.
                   2950: 
                   2951:        * optabs.c (emit_cmp_insn): If genning from tst_optab,
                   2952:        make the operand fit its predicate.
                   2953: 
                   2954:        * optabs.c (expand_float): Don't adjust stack between cmp and jump.
                   2955: 
                   2956:        * optabs.c (expand_binop): Recursive calls can return 0; handle
                   2957:        that event by deleting any preparatory insns.  Also don't smash
                   2958:        TARGET when this happens.
                   2959: 
                   2960:        * reload.c (push_reload): If IN != *INLOC, set reload_nocombine.
                   2961:        (combine_reloads): Don't combine an input reload with reload_nocombine.
                   2962: 
                   2963:        * jump.c (jump_optimize): Don't delete stack adjusts unless
                   2964:        EXIT_IGNORE_STACK is nonzero.
                   2965:        * expr.c (clear_pending_stack_adjust): Likewise.
                   2966:        * tm-*.h: When EXIT_IGNORE_STACK is defined, give it `1' as defn.
                   2967: 
                   2968:        * expr.c (expand_call): Initialize args_size.
                   2969:        Don't push a block if args_size is 0.
                   2970:        (emit_library_call): Don't include register-args (or reg-parts
                   2971:        of partial ones) in args_size.
                   2972:        Don't push a block if args_size is 0.
                   2973: 
                   2974:        * expr.c (expand_expr): For DECLs in memory, check the address
                   2975:        validity with memory_address_p, and preserve volatility info.
                   2976: 
                   2977:        * stmt.c (expand_function_end): fixup_gotos needs 2 args.
                   2978: 
                   2979:        * jump.c (mark_jump_label): If INSN is 0, don't set its JUMP_LABEL.
                   2980:        Inside an ADDR_VEC or ADDR_DIFF_VEC, recurse with 0 for INSN.
                   2981: 
                   2982:        * varasm.c (force_const_double_mem): Must zero TREE_CST_RTL
                   2983:        before output, or nothing will happen.
                   2984: 
                   2985: Sun Feb 28 01:08:53 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   2986: 
                   2987:        * optabs.c (emit_unop_insn): Generate and emit an insn
                   2988:        given the insn-code and the two operands (one out, one in).
                   2989:        Can move the operands into registers when needed for various
                   2990:        reasons.
                   2991:        * expr.c (convert_move): Use emit_unop_insn for outputting the
                   2992:        conversion insns.
                   2993: 
                   2994:        * expr.c (emit_library_call): Use arg's nominal mode to choose
                   2995:        a reg to pass it in, not actual mode (which can be VOIDmode).
                   2996: 
                   2997:        * insn-emit.c (emit_insn): If arg is empty SEQUENCE, do nothing.
                   2998: 
                   2999:        * genemit.c (gen_expand): Scan the rtl-pattern for predicates
                   3000:        and machine modes of the operands.
                   3001: 
                   3002:        * m68k.d (dbra patterns): Add HPUX_ASM conditionals.
                   3003: 
                   3004:        * rtl.c (reg_mentioned_p): Use "equal", not "eq", when
                   3005:        REG isn't a register.
                   3006:        * reload.c (combine_reloads): Verify not reg_mentioned_p even if
                   3007:        the input reload's value isn't a register.
                   3008: 
                   3009:        * reload.c (operands_match_p): If successful and 2nd arg
                   3010:        has a pre-increment that matches a non-increment, return 2.
                   3011: 
                   3012:        * reload1.c (reload): At end, clobber a pseudoreg to a MEM
                   3013:        even if it's an out-of-range address.  It doesn't affect the
                   3014:        assembler code in this case, but it makes the dbx output correct.
                   3015: 
                   3016:        * recog.c (constrain_operands): When operands_match_p returns 2,
                   3017:        in the constraint alternative that is ultimately successful,
                   3018:        copy the output operand from the input that it matched
                   3019:        so that the assembler insn that is output shows the pre-increment.
                   3020: 
                   3021: Sat Feb 27 15:16:47 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3022: 
                   3023:        * combine.c (subst): When optimizing
                   3024:         (set (zero_extract ...) (and (zero_extract ...) const))
                   3025:         must arrange to have 1's, not 0's, shifted into low bits of const.
                   3026: 
                   3027:        * decl.c (grokdeclarator): When return-type defaults to int,
                   3028:        don't warn, just set warn_about_return_type.
                   3029:        (start_function): See that variable and warn, after starting function.
                   3030: 
                   3031:        * toplev.c (count_error): No longer print newline if not quiet.
                   3032:        (report_error_function): If not quiet, print a newline if
                   3033:        printing anything, and don't print the function name.
                   3034: 
                   3035:        * reload1.c (choose_reload_targets):
                   3036:        Fix the loop that checks for consecutive available spill regs.
                   3037:        Set `have_groups' nonzero if any reload wants a group.
                   3038:        In that case, for non-group reloads, prefer a reg that can't be in
                   3039:        group, or else one that has only one available neighbor.
                   3040: 
                   3041:        * reload1.c (reload): Find separately the max need for each class
                   3042:        for single registers, groups of registers, and single registers
                   3043:        not in any group.  (The last one counts non-group reloads
                   3044:        in insns that have at least one group reload.)
                   3045:        Then make sure enough of each kind are found.
                   3046: 
                   3047:        * expmed.c: Now needs flags.h and recog.h (therefore insn-config.h).
                   3048: 
                   3049:        * expmed.c (store_bit_field):
                   3050:        Delete redundant protect_from_queue.
                   3051:        Force VALUE out of memory if -fforce-mem.
                   3052:        If insv's predicate for VALUE wants a register, put it there.
                   3053: 
                   3054:        * expmed.c (extract_bit_field):
                   3055:        Force TARGET out of memory if -fforce-mem.
                   3056:        If insv's predicate for TARGET wants a register, put it there.
                   3057: 
                   3058: Fri Feb 26 00:12:48 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3059: 
                   3060:        * reload1.c (eliminate_frame_pointer): Don't check for pushes
                   3061:        unless PUSH_ROUNDING is defined.
                   3062: 
                   3063:        * reload.c: Don't define REG_OK_FOR_{INDEX,BASE}_P
                   3064:        (since the tm file is supposed to do it).
                   3065: 
                   3066:        * expr.c (emit_push_insn, expand_call):
                   3067:        Don't use PUSH_ROUNDING if it's not defined.
                   3068: 
                   3069:        * expr.c (preexpand_calls): Do nothing for constants and decls.
                   3070: 
                   3071:        * expr.c (expand_call, emit_library_call): When PUSH_ROUNDING
                   3072:        is not defined, use ROUND_CALL_BLOCK_SIZE to round the size
                   3073:        of the block of arguments.
                   3074: 
                   3075:        * expr.c (expand_call): Don't count register-args in ARGS_SIZE.
                   3076: 
                   3077:        * rtl.h, emit-rtl.c: Create static_chain_incoming_rtx
                   3078:        and struct_value_incoming_rtx.
                   3079:        * stmt.c (expand_function_start): Use ..._incoming_rtx where needed.
                   3080: 
                   3081:        * expr.c (expand_call): Use new macros INIT_CUMULATIVE_ARGS,
                   3082:        CUMULATIVE_ARGS and FUNCTION_ARG_ADVANCE to update data
                   3083:        on args scanned so far.
                   3084:        (emit_library_call): Likewise.
                   3085:        * stmt.c (assign_parms): Likewise.
                   3086:        * tm-spur.h, tm-m68k.h: Define these macros.
                   3087: 
                   3088:        * rtl.h (NUM_MACHINE_MODES): NUM_MACHINE_MODE renamed.
                   3089:        * rtl.c, genrecog.c: Change places it is used.
                   3090: 
                   3091:        * cccp.c (output_line_command): line_cmd_buf should be chars, not ints.
                   3092: 
                   3093: Thu Feb 25 13:33:29 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3094: 
                   3095:        * genemit.c (gen_expand): Don't lose if pattern is empty-vector.
                   3096: 
                   3097:        * genconfig.c (gen_insn): Don't lose if pattern is empty-vector.
                   3098: 
                   3099:        * expr.c (expand_expr): For COMPONENT_REF, don't convert to tmode
                   3100:        unless the mode we get is unacceptable.
                   3101: 
                   3102:        * loop.c (scan_loop, move_movables): New field `partial' is 1 for
                   3103:        zero-extending clr insn; don't make the reg invariant when it's moved.
                   3104: 
                   3105:        * optabs.c (expand_unop, expand_binop, emit_cmp_insn):
                   3106:        mode-argument to predicates was missing.
                   3107: 
                   3108:        * optabs.c (expand_binop): If gen-function returns 0, this means
                   3109:        the insn wasn't available.
                   3110: 
                   3111:        * reload.c (find_reloads): Don't make optional reloads for operands
                   3112:        that match other operands.
                   3113: 
                   3114:        * reload.c (combine_reloads): Reject optional output reload.
                   3115: 
                   3116:        * reload.c (find_equiv_reg): Know that CALL_INSNs clobber memory.
                   3117: 
                   3118:        * typecheck.c (build_binary_op_nodefault):
                   3119:        If doing a short shift, leave the shift-count as a fullword.
                   3120: 
                   3121: Tue Feb 23 14:43:46 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3122: 
                   3123:        * combine.c (subst): Count, in n_occurrences, # times FROM is seen.
                   3124:        (try_combine): Refuse to combine x=*y++ into z = x*x.
                   3125: 
                   3126:        * loop.c (invariant_p): Frame pointer and arg pointer are invariant.
                   3127:        (move_movables): Don't forget to set ->done!
                   3128:        When moving the matching movables, don't forget to set n_times_set.
                   3129: 
                   3130:        * expmed.c (expand_shift): Reorder strategies for logical shift;
                   3131:        if widening, try all ashift strategies before extzv.
                   3132: 
                   3133:        * typecheck.c (build_binary_op_nodefault):
                   3134:        Always return error_mark if either operand is one.
                   3135: 
                   3136:        * recog.c (nonmemory_operand): New predicate.
                   3137: 
                   3138:        * optabs.c (expand_unop, expand_binop, emit_cmp_insn):
                   3139:        Don't treat `register_operand' as special.  Apply the predicate
                   3140:        to the rtx; if the predicate fails, use a register instead.
                   3141: 
                   3142: Mon Feb 22 22:37:32 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3143: 
                   3144:        * expr.c (expand_calls): Preexpand all calls in arguments
                   3145:        that are passed in regs before copying any of them into the regs.
                   3146: 
                   3147:        * expr.c (emit_push_insn): Three more args.
                   3148:        EXTRA for extra space to leave.
                   3149:        ARGS_ADDR and ARGS_SO_FAR for using move-insns on machines
                   3150:        that lack true push insns.
                   3151: 
                   3152:        * expr.c (emit_library_call, expand_call):
                   3153:        Use the new arguments of `emit_push_insn'.
                   3154: 
                   3155:        * expr.c (PUSH_ARGS_REVERSED): defined if handle args last-to-firs.
                   3156: 
                   3157: Sun Feb 21 12:17:59 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3158: 
                   3159:        * toplev.c (rest_of_compilation): Set TREE_ASM_WRITTEN
                   3160:        when a function is really output as assembler code.
                   3161:        Don't do inlining of a function that is already made inline;
                   3162:        instead, output it as assembler code, because this must be
                   3163:        the second call for that function.
                   3164: 
                   3165:        * decl.c (finish_compilation): Delete it.
                   3166:        * toplev.c (compile_file): Output pending inline functions at the end
                   3167:        in the same way tentative-defined variables are output.
                   3168: 
                   3169:        * emit-rtl.c (restore_reg_data): New fn: given chain of insns,
                   3170:        restore emit-rtl's data on registers from the regs they use.
                   3171: 
                   3172:        * integrate.c (output_inline_function): Use restore_reg_data.
                   3173:        (fill_regno_reg_rtx_as_needed): Now restore_reg_data_1 in emit-rtl.c.
                   3174: 
                   3175:        * tree.c (build_decl): Function moved from decl.c.
                   3176:        No longer set attributes of function decls specially.
                   3177: 
                   3178:        * decl.c (implicitly_declare, builtin_function, grokdeclarator):
                   3179:        Don't expect build_decl to set attributes of FUNCTION_DECL.
                   3180: 
                   3181:        * tree.c (preserve_data): New fn, make all data now on
                   3182:        maybepermanent_obstack last permanently.
                   3183: 
                   3184:        * cse.c (cse_insn): Remove a STRICT_LOW_PART from the dest rtx
                   3185:        before putting it in the hash table.
                   3186: 
                   3187:        * symout.c (symout_block): Fix the args to `symout_block_symbols'.
                   3188: 
                   3189: Sat Feb 20 00:07:52 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3190: 
                   3191:     Start of changes for inline functions.
                   3192:     Changes received from Tiemann, then slightly rearranged for simplicity.
                   3193: 
                   3194:        * integrate.c: New file (Tiemann's rtl2.c).
                   3195:        * integrate.c (function_cannot_integrate_p):
                   3196:        New fn, only checks whether current fn is safe and good to inline.
                   3197:        Returns an error message string if not.
                   3198: 
                   3199:        * expr.c (current_args_size): Var made static.
                   3200:        (store_expr): Fn no longer static.
                   3201:        (stack_pointer_rtx): Use this var for all refs to the stack pointer.
                   3202:        (struct_value_rtx, static_chain_rtx): Likewise
                   3203: 
                   3204:        * expr.c (expand_call): Detect calls to integrable functions
                   3205:        and integrate them.
                   3206:        **If fn is not named "alloca" then assume it is not `alloca'. **
                   3207: 
                   3208:        * emit-rtl.c (max_label_num): New fn, returns number for next label.
                   3209:        (get_first_label_num): New fn, returns first label of current fn.
                   3210:        (init_emit): Save first label number of this fn.
                   3211: 
                   3212:        * emit-rtl.c (gen_inline_header_rtx): New fn, make an INLINE_HEADER.
                   3213: 
                   3214:        * emit-rtl.c (emit_declaration): New fn to emit new kind of NOTE.
                   3215: 
                   3216:        * emit-rtl.c (init_emit_once): New fn.
                   3217:        Move inits of unique rtl objects here, from init_emit.
                   3218: 
                   3219:        * decl.c (finish_compilation): New fn to compile separately
                   3220:        any nonglobal inline functions that need to be addressable.
                   3221: 
                   3222:        * decl.c (grokdeclarator): Handle `inline' kwd among the declspecs.
                   3223:        Set TREE_INLINE if it's safe.
                   3224: 
                   3225:        * decl.c (finish_function): If fn was inlined, don't clear
                   3226:        the DECL_ARGUMENTS or DECL_RESULT or DECL_INITIAL.
                   3227: 
                   3228:        * gen*.c: Provide rtl_obstack, not current_obstack.
                   3229: 
                   3230:        * rtl.c (rtl_obstack): Variable: ptr to obstack to use for making rtl.
                   3231:        * rtl.c (rtx_alloc, rtvec_alloc): Use that obstack.
                   3232:        * rtl.c (copy_rtx): Copy the `integrated' flag.
                   3233:        * rtl.c (print_rtx): Print that flag as `/i'.
                   3234: 
                   3235:        * rtl.def: New rtx code INLINE_HEADER.
                   3236: 
                   3237:        * rtl.h (struct rtx_def): Add `integrated' field.
                   3238:        * rtl.h: Define macros for fields in an inline_header rtx.
                   3239: 
                   3240:        * stmt.c (max_parm_reg_num, get_first_function_insn):
                   3241:        New fns, return info on parm regs and the insns that init them.
                   3242: 
                   3243:        * stmt.c (expand_decl): Simplify with new local `type'.
                   3244: 
                   3245:        * stmt.c (stack_pointer_rtx): Replace all refs to stack pointer
                   3246:        with this shared rtx.
                   3247:        * stmt.c (struct_value_rtx): Likewise.
                   3248: 
                   3249:        * stmt.c (expand_start_function): Call init_pending_stack_adjust
                   3250:        instead of clear_pending_stack_adjust.
                   3251:        If not using a return-label, set `return_label' to 0.
                   3252: 
                   3253:        * stmt.c (expand_null_return, expand_end_function):
                   3254:        Call clear_pending_stack_adjust unconditionally.
                   3255: 
                   3256:        * expr.c (clear_pending_stack_adjust): Move the conditionals here.
                   3257:        For now, this fn is a no-op, since it's not safe in an inline fn
                   3258:        and the stack adjusts are deleted by jump.c in if optimizing.
                   3259: 
                   3260:        * expr.c (init_pending_stack_adjust): New fn.
                   3261: 
                   3262: Fri Feb 19 14:30:13 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3263: 
                   3264:        * toplev.c (main): Decode -finline-functions, -fkeep-inline-functions.
                   3265: 
                   3266:        * toplev.c (rest_of_compilation):
                   3267:        At start, save the rtl if function should be inline.
                   3268:        For inline function, if we don't yet know whether it should be
                   3269:        compiled on its own, don't do so.
                   3270: 
                   3271:        * toplev.c (compile_file): Clear, and later print, `integration_time'.
                   3272:        Call `init_emit_rtl' when starting.
                   3273:        Call `finish_compilation' at the end.
                   3274: 
                   3275:        [Add an extra arg to the error and warning functions?]
                   3276: 
                   3277:        * tree.c ({push,pop,clear}_momentary):
                   3278:        Change momentary_stack from a char ** to a struct momentary_level *.
                   3279: 
                   3280:        * tree.c (build_pointer_type): Put temporary type in `saveable_obstack'
                   3281:        * tree.c (build_type_variant): Likewise.
                   3282:        * tree.c (make_node): Likewise.  Also put decls and LET_STMTs there.
                   3283:        * tree.c (type_hash_canon): Free a temporary type in `saveable_obstack'
                   3284: 
                   3285:        * tree.c (perm_tree_cons): Like `tree_cons' but on perm. obstack.
                   3286: 
                   3287:        * tree.c (init_tree, {{end_,}temporary,permanent}_allocation):
                   3288:        Handle `maybepermanent_obstack' and `saveable_obstack' and
                   3289:        `rtl_obstack'.
                   3290: 
                   3291:        * tree.h (TREE_INLINE): New attribute macro.
                   3292:        * tree.h (DECL_SAVED_INSNS, DECL_FRAME_SIZE):
                   3293:        New components in a FUNCTION_DECL.
                   3294:        Delete the `unused` slot in a `struct tree_decl'.
                   3295: 
                   3296:        * typecheck.c (mark_addressable): Set TREE_ADDRESSABLE
                   3297:        even in FUNCTION_DECLs.
                   3298: 
                   3299:        * typecheck.c (build_function_call):
                   3300:        If function is a FUNCTION_DECL, avoid setting TREE_ADDRESSABLE
                   3301:        when taking its address.
                   3302: 
                   3303:        * parse.h: Define RID_INLINE.
                   3304:        * parse.y: Define keyword `inline'; set up ridpointers for it.
                   3305:        (yylex): Don't recognize `inline' of -fno-asm or -ftraditional.
                   3306: 
                   3307:        * flags.h: New vars flag_inline_functions
                   3308:        and flag_keep_inline_functions.
                   3309: 
                   3310:   End of changes for inline functions.
                   3311:        
                   3312:        * tree.c (convert): If EXPR's type is an error_mark, return error_mark.
                   3313: 
                   3314:        * Makefile (install): Don't strip the executables.
                   3315: 
                   3316:        * jump.c (delete_insn): Deleting a label's target
                   3317:        can delete either NEXT and PREV!  So must search for a
                   3318:        following nondeleted insn to return.
                   3319: 
                   3320:        * typecheck.c (build_function_call): Typo in validating
                   3321:        data type of function.
                   3322: 
                   3323:        * genoutput.c (gen_expand): Must create a `struct data' even
                   3324:        for a define_expand, so we can output the proper insn_gen_function
                   3325:        and leave zeros in the other tables.
                   3326: 
                   3327:        * loop.c (scan_loop): Replace the code for handling zero-extends
                   3328:        with unconditional code that checks for a pair of insns.
                   3329: 
                   3330:        * m68k.md: Do zero-extend using define_expand to generate
                   3331:        a pair of insns, to set all to zero and then copy the low part.
                   3332: 
                   3333: Thu Feb 18 15:54:00 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3334: 
                   3335:        * emit-rtl.c (emit_insn): If arg is a SEQUENCE, emit several insns.
                   3336:        * emit-rtl.c (classify_insn): Given an RTX, return the rtx-code for
                   3337:        an insn containing it: CODE_LABEL, INSN, JUMP_INSN or CALL_INSN.
                   3338: 
                   3339:        * rtl.def: New RTX types DEFINE_EXPAND and SEQUENCE.
                   3340:        * gen*.c: Handle DEFINE_EXPAND.  Only genemit.c does real work.
                   3341: 
                   3342:        * make.com, make-cc1.com, make-cccp.com: New, VMS command files.
                   3343: 
                   3344:        * tm-vms.h: New file, used as tm.h to generate VMS code.
                   3345: 
                   3346:        * tm-vax.h (FUNCTION_PROLOGUE): Turn off no bits in the mask;
                   3347:        let call_used_registers alone control this.
                   3348:        Call MAYBE_VMS_FUNCTION_PROLOGUE, and define that as no-op.
                   3349: 
                   3350:        * tm-vax.h (TARGET_VAXC_ALIGNMENT): New target-flag bit.
                   3351:        BIGGEST_ALIGNMENT, EMPTY_FIELD_BOUNDARY and POINTER_BOUNDARY use it.
                   3352: 
                   3353:        * varasm.c (assemble_function): Use ASM_DECLARE_FUNCTION_NAME
                   3354:        if it is defined.
                   3355: 
                   3356:        * varasm.c (assemble_variable): On an external,
                   3357:        use ASM_OUTPUT_EXTERNAL if defined.  Default is do nothing, as before.
                   3358: 
                   3359:        * toplev.c:
                   3360:        Use FATAL_EXIT_CODE and SUCCESS_EXIT_CODE.
                   3361:        Don't include time.h and resource.h on VMS.
                   3362:        (main) Define __VERSION__ if not already defined.
                   3363:        Conditionalize setrlimit on RLIMIT_STACK.       
                   3364:        Test __GNUC__, not __GNU__.
                   3365:        Don't do `ps v' on VMS.
                   3366:        (gettime): Conditional code for VMS.
                   3367: 
                   3368:        * gcc.c: Define __GNUC__ as well as __GNU__.
                   3369:        __GNU__ will be deleted in a future version.
                   3370: 
                   3371:        * symout.c (symout_finish) [VMS]: Don't refer to `getwd' on VMS.
                   3372:        * symout.c (symout_init) [VMS]: Fatal error; GDB syms not supported.
                   3373: 
                   3374:        * parse.y (yylex): Handle DOLLARS_IN_IDENTIFIERS.
                   3375: 
                   3376:        * genoutput.c (gen_insn): Workaround for VMS printf %s bug.
                   3377: 
                   3378:        * gen*.c: Include config.h.  Whenever exiting, use
                   3379:        SUCCESS_EXIT_CODE or FATAL_EXIT_CODE.
                   3380: 
                   3381:        * config-*.h: Define SUCCESS_EXIT_CODE and FATAL_EXIT_CODE.
                   3382:        * config-vms.h: New file, mostly like config-vax.h.
                   3383: 
                   3384: Wed Feb 17 13:35:34 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3385: 
                   3386:        * cccp.c: VMS support from Kashtan.
                   3387:        Some #include files are conditional.
                   3388:        Use file_size_and_mode instead of fstat.
                   3389:        When reading file contents, the size we get from that
                   3390:        is just an upper bound; don't assume it must match.
                   3391:        Replacement definitions of read and write for VMS.
                   3392:        Different default include directories.
                   3393:        Conditionalize the setrlimit code on RLIMIT_STACK.
                   3394:        Use SUCCESS_EXIT_CODE when exiting if no errors;
                   3395:        both that and FATAL_EXIT_CODE are not #defined if already defined.
                   3396: 
                   3397:        Treat $ as an identifier-character if DOLLARS_IN_IDENTIFIERS.
                   3398:        Rename the `delete' function as `delete_macro'
                   3399:        to avoid VMS name conflict.
                   3400: 
                   3401:        * cexp.y: Treat $ as an identifier-character if DOLLARS_IN_IDENTIFIERS.
                   3402: 
                   3403:        * stmt.c (fixup_memory_offset): Do big-endian compensation
                   3404:        only within a word, not for DImode vs SImode.
                   3405: 
                   3406:        * stmt.c (fixup_var_refs): Don't fix up the insn to load the var
                   3407:        from its own stack slot; delete it instead.
                   3408: 
                   3409:        * tm-ns32k.h (MODES_TIEABLE_P): DImode is like DFmode.
                   3410: 
                   3411:        * tree.c (MAX_HASH_TABLE): 1009 (more prime) instead of 1008.
                   3412: 
                   3413:        * decl.c (duplicate_decls): If merged type is OLD's type,
                   3414:        keep OLD's DECL_SIZE and DECL_SIZE_UNIT.
                   3415: 
                   3416:        * gen*.c (xmalloc, xrealloc): Call `fatal' if memory is full.
                   3417: 
                   3418:        * reload1.c (choose_reload_targets): If a mode doesn't fit the
                   3419:        reload register, and the insn is an ASM_OPERANDS, ignore the reload.
                   3420:        Otherwise, final would crash.
                   3421: 
                   3422:        * expmed.c (expand_shift): Two new strategies for lshr on short/char:
                   3423:        widen and do ashr, or widen and do extzv.
                   3424: 
                   3425:        * vax.md (peepholes): Use dead_or_set_p to check for eliminable
                   3426:        intermediate result, rather than requiring a match with final result.
                   3427: 
                   3428:        * local-alloc.c (block_alloc): Testing frame_pointer_needed is
                   3429:        enough; no need to test FRAME_POINTER_REQUIRED, etc.
                   3430:        * global-alloc.c (find_reg): Likewise.
                   3431:        * reload1.c (reload): Likewise for flag_omit_frame_pointer
                   3432: 
                   3433:        * jump.c (delete_insn): If not `optimize', don't complain
                   3434:        about finding an already-deleted insn in the chain.
                   3435: 
                   3436: Tue Feb 16 17:14:54 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
                   3437: 
                   3438:        * final.c: Don't define N_SOL and N_SLINE if already defined.
                   3439: 
                   3440:        * final.c (output_source_line):
                   3441:        Typo calling ASM_OUTPUT_SOURCE_FILENAME.
                   3442: 
                   3443:        * flow.c (INSN_VOLATILE): fix a typo.
                   3444: 
                   3445: Fri Feb 12 16:48:16 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3446: 
                   3447:        * final.c (final): for `asm' without operands, output literally.
                   3448: 
                   3449: Thu Feb 11 12:44:41 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3450: 
                   3451:        * symout.c (symout_record_fields): Handle nameless fields.
                   3452:        * symout.c (symout_record_field_names): Likewise.
                   3453: 
                   3454:        * typecheck.c (require_complete_type): `void' is a complete type.
                   3455:        * typecheck.c (build_function_call): Don't complain if result is void.
                   3456: 
                   3457:        * tm-hp9k320.h: Change definition of ASM_SPEC to +X, not -X.
                   3458: 
                   3459:        * cccp.c (main): Expected object file name for foo.cc is foo.o.
                   3460: 
                   3461: Wed Feb 10 16:04:58 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3462: 
                   3463:        * reload1.c (reload): Initialize `regmask' to zero.
                   3464:        Class number is in I, not in CLASS, when setting its elements.
                   3465:        Don't let J+K be too large.
                   3466: 
                   3467:        * reload1.c (potential_reload_regs): Make it a `short'
                   3468:        since that can't be unsigned.
                   3469: 
                   3470:        * cccp.c (warning): New function, called like `error'.
                   3471:        * cccp.c (do_define): Make redefinition just a warning.
                   3472: 
                   3473: Tue Feb  9 13:28:00 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3474: 
                   3475:        * decl.c (grokdeclarator): Don't be fooled by ERROR_MARK as a declspec.
                   3476: 
                   3477:        * toplev.c (compile_file): Strip final .c or .co from .sym file name.
                   3478: 
                   3479:        * gcc.c: When running `as', specify the .sym file if -gg.
                   3480: 
                   3481: Mon Feb  8 11:26:26 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3482: 
                   3483:        * expmed.c (store_fixed_bit_field): Don't try gen_lowpart on VALUE
                   3484:        if it's a subreg since it might lose; use convert_to_mode instead.
                   3485: 
                   3486:        * tm-hp9k320.h: Define TARGET_MEM_FUNCTIONS.
                   3487:        * expr.c (emit_block_move, emit_push_insn, clear_storage):
                   3488:        If TARGET_MEM_FUNCTIONS, generate calls to memcpy and memset
                   3489:        instead of bcopy and bzero.
                   3490:        * optabs.c (emit_cmp_insn): Likewise for memcmp vs bcmp.
                   3491: 
                   3492:        * stmt.c (expand_goto): New temp var to avoid RT/PC compiler bug.
                   3493: 
                   3494: Sun Feb  7 12:20:23 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3495: 
                   3496:        * flow.c (mark_used_regs, mark_set_regs):
                   3497:        Handle hard regs in multiword modes: set the bits for each
                   3498:        distinct register-number that makes up the multiword mode.
                   3499:        Necessary because function arg registers can inevitably
                   3500:        live across basic blocks.
                   3501: 
                   3502:        * cse.c (canon_hash): Function arg and value registers no longer
                   3503:        considered volatile, because flow should now handle the code that
                   3504:        can result from cse'ing them.
                   3505: 
                   3506:        * cse.c (make_regs_eqv): Abort if OLD is invalid.
                   3507:        * cse.c (reg_invalidate): Abort if reg already invalid has eqvs.
                   3508: 
                   3509: Sat Feb  6 16:25:32 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3510: 
                   3511:        * gcc.c (main): Specific error msg if no input files.
                   3512: 
                   3513: Fri Feb  5 17:56:00 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3514: 
                   3515:        * stmt.c (expand_decl, put_var_into_stack, assign_parms):
                   3516:        Set in_struct on a MEM if the variable is an aggregate or union.
                   3517:        * varasm.c (assemble_variable): Set in_struct on aggregate vars.
                   3518: 
                   3519: Thu Feb  4 11:52:30 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3520: 
                   3521:        * m68k.md (movsf): Correct two fmove.x to fmove.s.
                   3522: 
                   3523:        * expmed.c (extract_fixed_bit_field):
                   3524:        Must always generate an `and' to mask the bitfield
                   3525:        unless its width is the same as the output machine mode.
                   3526: 
                   3527:        * version 1.18 released.
                   3528: 
                   3529: Wed Feb  3 08:41:20 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3530: 
                   3531:        * fold-const.c (fold): Convert EXPR's operands before returning them.
                   3532: 
                   3533: Tue Feb  2 15:35:18 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3534: 
                   3535:        * reload.c (find_reloads_address_1):
                   3536: 
                   3537:        * typecheck.c (default_conversion): Handle COMPOUND_EXPR arrays.
                   3538: 
                   3539: Mon Feb  1 18:53:05 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3540: 
                   3541:        * ns32k.md: operand 0 of all unsigned divide/modulus insns
                   3542:        is now register_operand.
                   3543: 
                   3544:        * stdarg.h: Make va_list be char *, not char *[1].
                   3545:        Latest draft doesn't say it must be an array type.
                   3546: 
                   3547: Sun Jan 31 11:14:07 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3548: 
                   3549:        * flow.c (find_basic_blocks): Add temp var to avoid Sequent
                   3550:        compiler bug.
                   3551: 
                   3552:        * tm-ns32k.h (GO_IF_LEGITIMATE_ADDRESS): Don't allow pushes or pops
                   3553:        since there are special insn patterns for them.
                   3554:        Resubroutinize and add temp vars to make expressions smaller.
                   3555:        * ns32k.md: Add a few more special stack insns; now there are enough.
                   3556: 
                   3557:        * tm-sequent.h: Definitions of DBX_NO_XREFS and DBX_CONTIN_LENGTH.
                   3558: 
                   3559:        * reload1.c (choose_reload_targets): Handling of reload_strict_low
                   3560:        is needed for input reloads as well as output, since a strict_low_part
                   3561:        operand is normally a read-write operand.
                   3562: 
                   3563:        * reload1.c (reload): The mode a reload needs is the wider of
                   3564:        the input and output modes--just as it is in choose_reload_targets.
                   3565: 
                   3566:        * reload.c (find_dummy_reload): If IN and OUT have different widths
                   3567:        and one of them exceeds a word, don't find any dummy reload.
                   3568: 
                   3569:        * toplev.c (compile_file): Allocate enough space for .jump2 filename.
                   3570: 
                   3571: Sat Jan 30 10:35:46 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3572: 
                   3573:        * output-ns32k.c (print_operand_address):
                   3574:        Print addresses of the form C1+(N*REG+C2) which currently
                   3575:        are accepted as legitimate memory addresses.
                   3576: 
                   3577:        * tm-sequent.h: Simple bugs in PRINT_OPERAND, TARGET_DEFAULT
                   3578:        and SEQUENT_ADDRESS_BUG.
                   3579: 
                   3580:        * gen*.c: Must explicitly exit; returning from `main' fails
                   3581:        to indicate nonzero status due to bug in Unix.
                   3582: 
                   3583:        * parse.y (check_line_number): Ignore entire line of unrecognized
                   3584:        #-directive; no error if it is `pragma'.
                   3585: 
                   3586: Fri Jan 29 06:46:01 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3587: 
                   3588:        * genrecog.c, genextract.c, genoutput.c: Define bcopy and/or bzero.
                   3589: 
                   3590:        * cccp.c (do_define): Make defn->argnames long enough in no-args case.
                   3591: 
                   3592:        * reload1.c (reload): Make basic_block_needs 0 until after the
                   3593:        frame pointer reg is spilled, so that ALL pseudos in it are spilled.
                   3594: 
                   3595:        * typecheck.c (truthvalue_conversion):
                   3596:        Strip a NOP_EXPR only if it extends, not if it truncates.
                   3597: 
                   3598:        * Fixes for HPUX support from cph:
                   3599:        * tm-hp9k320.h: Correct names of floating-point registers.
                   3600:        Fix typos in ASM_OUTPUT_OPCODE; also convert `fmove' to `fmov'.
                   3601:        * Makefile (comments for HPUX):
                   3602:        cph says -Wd,-X isn't needed in CFLAGS, nor -lBSD in CLIB.
                   3603:        Also that -g can't be used in CFLAGS with HP's pcc.
                   3604:        * conf-hp9k320.h: New file, like config-m68k.h but with
                   3605:        #defines for the bstring functions.
                   3606:        * m68k.md: Add else-clauses to the HPUX_ASM conditionals on cmp insns.
                   3607:        Reinsert mistakenly-deleted MOTOROLA conditionals around
                   3608:        some OUTPUT_JUMPs.
                   3609: 
                   3610: Thu Jan 28 09:51:41 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3611: 
                   3612:        * jump.c (jump_back_p): If TARGET is unconditional, return 0.
                   3613: 
                   3614: Wed Jan 27 04:18:29 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3615: 
                   3616:        * combine.c (subst): Simplify (plus (plus x c1) c2).
                   3617: 
                   3618:        * expr.c (emit_push_insn): Don't use small-block push-insns for BLKmode
                   3619:        when one of them would be affected by PUSH_ROUNDING.
                   3620:        Instead, make all the space and then copy.
                   3621:        * expr.c (expand_call): Don't apply PUSH_ROUNDING if BLKmode.
                   3622: 
                   3623:        * Allow `asm' with operands to be marked volatile.
                   3624:        * cse.c (canon_hash): Don't record ASM_OPERANDS that has `volatil'.
                   3625:        * loop.c (invariant_p): ASM_OPERANDS with `volatil' can't be invariant.
                   3626:        * flow.c (volatile_refs_p): Note ASM_OPERANDS that are volatile.
                   3627:        * stmt.c (expand_asm_operands): New arg VOL; mark ASM_OPERANDS as vol.
                   3628:        * typecheck.c (c_expand_asm_operands): New arg VOL.
                   3629:        * parse.y: allow a TYPE_QUAL after ASM.
                   3630: 
                   3631:        * Make cse handle `asm' with operands:
                   3632:        * cse.c (canon_hash): Hash string operands by contents, not address.
                   3633:        * cse.c (exp_equiv_p): Compare string operands with strcmp.
                   3634:        * rtl.c (rtx_equal_p): Compare string operands with strcmp.
                   3635: 
                   3636:        * decl.c (init_decl_processing): Once sizetype is set,
                   3637:        correct the type of the sizes of types already made.
                   3638: 
                   3639:        * cccp.c (do_defines): Don't reject #define foo{a}.
                   3640: 
                   3641: Tue Jan 26 04:53:16 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3642: 
                   3643:        * reload.c (find_reloads): Now that `asm' is limited to
                   3644:        MAX_RECOG_OPERANDS, eliminate dynamic allocation of `constraints'
                   3645:        and `constraints1', and go back to `recog_operand' instead of
                   3646:        `operands'.
                   3647: 
                   3648:        * typecheck.c (c_expand_asm_operands): New fn to handle `asm' for C.
                   3649:        Calls expand_asm_operands, and handles output operands that
                   3650:        the other function cannot handle.
                   3651: 
                   3652:        * parse.y: Call that function.
                   3653: 
                   3654:        * stmt.c (expand_asm_operands): Error if too many operands.
                   3655:        #include insn-config.h to get MAX_RECOG_OPERANDS.
                   3656: 
                   3657:        * expr.c (expand_assignment): Use store_field to handle
                   3658:        structure fields and array elements.
                   3659: 
                   3660:        * output-m68k.c (output_move_double): PUSHOP and POPOP were swapped.
                   3661:        Handle insns that push an sp-relative address onto sp;
                   3662:        these can arise with -fomit-frame-pointer.
                   3663:        BUG? Do unoffsetable mem refs using sp and fp lose?
                   3664: 
                   3665:        * m68k.md (movdi,movdf): Allow unoffsetable mem refs
                   3666:        only if the other operand is a register.
                   3667: 
                   3668:        * m68k.md (zero_extendqisi2): SGS conditionals deleted.
                   3669:        Supposedly the MOTOROLA syntax works for those addresses.
                   3670: 
                   3671:        * typecheck.c (default_conversion):
                   3672:        If flag_traditional, preserve unsignedness when promoting ints,
                   3673:        and promote float to double.
                   3674: 
                   3675:        * typecheck.c (build_binary_op_nodefault):
                   3676:        Allow comparisons between pointers and ints.
                   3677:        If not -traditional, warn about them.
                   3678: 
                   3679: Mon Jan 25 02:11:18 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3680: 
                   3681:        * expmed.c ({extract,store}_split_bit_field):
                   3682:        Functions {extract,store}_split_reg_bit_field now work for memory
                   3683:        also, and therefore are renamed.
                   3684:        * ({extract,store}_fixed_bit_field): Call those fns when a field
                   3685:        is split across two words.
                   3686:        Also, preserve the `volatil' bit on memory refs.
                   3687: 
                   3688:        * output-m68k.c (output_move_double): Handle nonoffsetable mem refs.
                   3689:        * m68k.md: Relax constraints on movdi, movdf.
                   3690: 
                   3691:        * decl.c (init_decl_processing): Define `int' and `char' first.
                   3692:        Set `sizetype' explicitly.
                   3693: 
                   3694:        * stmt.c (fixup_var_refs_1): May not just return when a SET
                   3695:        doesn't have VAR as its src or dest.
                   3696: 
                   3697:        * varasm.c: Don't include c-tree.h.
                   3698: 
                   3699:        * decl.c (build_struct): Split this function into three:
                   3700:        `xref_tag', `start_struct' and `finish_struct'.
                   3701:        `xref_tag' subsumes `xref_enum'.
                   3702: 
                   3703:        * parse.y (structsp): When parsing `struct foo {...}', define the tag
                   3704:        as a cross-ref before parsing the components.  Use the three new fns.
                   3705: 
                   3706:        * regclass.c (regclass): Recognize new-format ASM_OPERANDS insns
                   3707:        with `asm_noperands', and scan their operands as usual.
                   3708: 
                   3709:        * cse.c: In numerous functions such as canon_hash, rtx_cost, etc.
                   3710:        that do tree-walk on rtx, handle vectors of subexpressions.
                   3711: 
                   3712:        * loop.c (invariant_p): Likewise.
                   3713: 
                   3714:        * jump.c (delete_insn): Two bugs:
                   3715:        If insn already deleted, return the first following nondeleted.
                   3716:        Deleting a jump's label can delete NEXT.  Make sure return value
                   3717:        is always the first insn following INSN and not yet deleted.
                   3718: 
                   3719: Sun Jan 24 02:27:49 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3720: 
                   3721:        * rtl.def (ASM_OPERANDS): Change the rtl expression of an
                   3722:        `asm' with operands so it looks like this for one output operand:
                   3723:        (set OUTPUT (asm_operands:OUTPUTMODE INSNSTRING OUTPUTCONSTRAINT
                   3724:                                             0 INPUTS INPUTCONSTRAINTS)).
                   3725:        and like this for multiple outputs:
                   3726:        (PARALLEL [
                   3727:          (set OUTPUT0 (asm_operands:OUTPUTMODE INSNSTRING OUTPUTCONSTRAINT
                   3728:                                                0 INPUTS INPUTCONSTRAINTS)).
                   3729:          (set OUTPUT1 (asm_operands:OUTPUTMODE1 INSNSTRING OUTPUTCONSTRAINT1
                   3730:                                                1 INPUTS INPUTCONSTRAINTS))])
                   3731: 
                   3732:        * parse.y: Change parsing of `asm' to distinguish input and output
                   3733:        operands.  Separate them with colon; separate the string with colon.
                   3734: 
                   3735:        * stmt.c (expand_asm_operands): Receive inputs and outputs separately.
                   3736:        Generate the new rtl format.
                   3737: 
                   3738:        * recog.c (asm_noperands, decode_asm_operands): New fns
                   3739:        for extracting the operands and constraints from these insns.
                   3740: 
                   3741:        * final.c (final): Recognize and output the new rtl format
                   3742:        using those new functions.
                   3743: 
                   3744:        * reload.c (find_reloads): Recognize and get constraints
                   3745:        from the new rtl format using those new functions.
                   3746:        New variable `operand_modes' holds the machine modes of the
                   3747:        operands, obtained one way for ASM_OPERANDS insns and another
                   3748:        for other insns.
                   3749: 
                   3750:        * rtl.c (note_stores): Calling convention
                   3751:        is changed: the first arg FUNCTION now receives as its 2nd arg
                   3752:        1 if clobbering, 0 if setting.  Used to be the CLOBBER or SET rtx.
                   3753: 
                   3754:        * local-alloc.c (reg_is_set): This fn is called from note_stores;
                   3755:        change its arguments.
                   3756: 
                   3757:        * tm-m68k.h (FIXUP_FRAME_POINTER_ADDRESSES):
                   3758:        Use frame_pointer_rtx to recognize intended frame-pointer refs
                   3759:        and not recognize pseudo-regs that were allocated to the frame
                   3760:        pointer register.
                   3761: 
                   3762:        * emit-rtl.c: All refs to frame pointer use a single rtx, in
                   3763:        frame_pointer_rtx.  Likewise arg_pointer_rtx for the arg pointer.
                   3764:        If they are the same register, these are the same rtx.
                   3765:        Initialize them in init_emit.
                   3766:        * rtl.h: Declare these vars.
                   3767: 
                   3768:        * stmt.c (assign_parms, assign_stack_local): Use those rtx's.
                   3769: 
                   3770: Sat Jan 23 00:32:10 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
                   3771: 
                   3772:        * reload.c (find_reloads): Don't combine_reloads if `&' constraint
                   3773:        was used.
                   3774: 
                   3775:        * parse.y: Parse `asm' with operands.
                   3776:        * stmt.c (expand_asm_params): New fn: generate an ASM_OPERANDS for
                   3777:        `asm' with operands.
                   3778:        * final.c (final): Output an ASM_OPERANDS insn-body.
                   3779:        * regclass.c (regclass): Ignore ASM_OPERANDS, like ASM_INPUT.
                   3780: 
                   3781:        * reload.c (find_reloads): Handle reloading of ASM_OPERANDS.
                   3782:        The number of operands can no longer be bounded.
                   3783:        For example we can't always put the operands in recog_operands.
                   3784: 
                   3785:        New locals OPERANDS and OPERAND_LOCS point to alloca'd vectors of
                   3786:        operands and their locations.  New locals CONSTRAINTS and CONSTRAINTS1
                   3787:        hold alloca'd vectors of constraints.
                   3788: 
                   3789:        Unfortunately this isn't enough; every vector with length
                   3790:        MAX_RECOG_OPERANDS needs to be dynamically allocated.
                   3791:        Would this be too slow?  For now, a cheap "solution" is to delete
                   3792:        any insn that has too many operands.
                   3793: 
                   3794:        * rtl.def: Delete VOLATILE, UNCHANGING and UNDESCRIBED.
                   3795:        Add ASM_OPERANDS.
                   3796: 
                   3797:        * regclass.c (reg_class_record): Delete ref to UNCHANGING.
                   3798:        * loop.c (invariant_p):
                   3799:        * rtl.c (rtx_varies_p):
                   3800: 
                   3801:        * cccp.c: Define __VERSION__.
                   3802: 
                   3803:        * decl.c (shadow_tag): TYPE_NAME doesn't work to get the tag-name
                   3804:        of a struct, so use new function lookup_tag_reverse.
                   3805:        * decl.c (lookup_tag_reverse): Given a type, return its tag name.
                   3806: 
                   3807:        * symout.c (symout_source_file): Output one `struct source'.
                   3808:        * symout.c (symout_lines): Output all of them, and the sourcevector.
                   3809:        * gdbfiles.h: New file for communication between final.c and symout.c.
                   3810: 
                   3811:        * final.c (output_source_line): New arg WRITE_SYMBOLS says write
                   3812:        new GDB-format linenumber info.  Assigns a filenum to each source
                   3813:        file name and keeps track of the correspondence.
                   3814: 
                   3815:        * cccp.c (do_include): Output the -M info after searching the dirs;
                   3816:        include the actual dir name.  Don't generate "./" for current dir.
                   3817: 
                   3818: Fri Jan 22 04:10:10 1988  Richard Stallman  (rms at frosted-flakes)
                   3819: 
                   3820:        * tm-news800.h: Delete override of INDIRECTABLE_1_ADDRESS.
                   3821:        Output is faster if it doesn't use 32-bit displacements.
                   3822: 
                   3823:        * reload.c (combine_reloads): New function.
                   3824:        If possible, find an input reload
                   3825:        and an output reload that can be turned into one input-output reload.
                   3826:        The old output-reload is marked as inoperative: reload_out
                   3827:        and reload_in both zero.  This is called from find_reloads.
                   3828: 
                   3829:        * reload1.c (reload, choose_reload_targets): Ignore inoperative
                   3830:        reloads.
                   3831: 
                   3832:        * Print warnings for variables that could be clobbered by `longjmp'.
                   3833:        * expr.c (expand_call): Generate a NOTE_INSN_SETJMP whenever
                   3834:        `setjmp' or `_setjmp' is called.
                   3835:        * flow.c (propagate_block): When NOTE_INSN_SETJMP is seen,
                   3836:        record the live regs in `regs_live_at_setjmp'.
                   3837:        * stmt.c (uninitialized_vars_warning): Warn about vars that have regs
                   3838:        that are set more than once and are marked in `regs_live_at_setjmp'.
                   3839:        Works through function `regno_clobbered_by_longjmp'.
                   3840:        * rtl.h: Define NOTE_INSN_SETJMP.
                   3841: 
                   3842:        * genrecog.c (try_merge_2): When enforce_modes, keep all the
                   3843:        alternatives segregated by modes and keep the modes in numerical order.
                   3844:        * genrecog.c (write_tree): Make conditions for switch-on-modes
                   3845:        know what difference enforce_mode makes.
                   3846: 
                   3847: Thu Jan 21 00:12:35 1988  Richard Stallman  (rms at frosted-flakes)
                   3848: 
                   3849:        * tm-ns32k.h: Use Stein's definitions of PRINT_OPERAND{,_ADDRESS};
                   3850:        move the Sequent definitions info tm-sequent.h.
                   3851:        Handle %$ in both old and new PRINT_OPERAND.
                   3852:        Define CPP_PREDEFINES.
                   3853: 
                   3854:        * ns32k.md: Merge some features from Jan Stein's port:
                   3855:        strict_low_part insns, smart output of booleans with small
                   3856:        constant args, acbd insns generalized for other increments.
                   3857:        Use %$ wherever there is an explicit immediate.
                   3858:        Fix shortcomings of adjsp insns: use adjspd in general,
                   3859:        and use adjspb in all the cases that allow it.
                   3860:        Don't bother explicitly clearing CC_REVERSED.
                   3861:        For tstsf/tstdf, output the floating-zero constants
                   3862:        using {f,d}const0_rtx.
                   3863: 
                   3864:        A problem still remains, which is that the Sequent and the
                   3865:        other ns32k assembler syntax require different 
                   3866: 
                   3867:        * typecheck.c (unary_complex_value): Use correct datatype for
                   3868:        compound-exprs.
                   3869: 
                   3870:        * gen*.c (main): Use obstack_init instead of obstack_begin.
                   3871: 
                   3872:        * vax.md: define_peephole for  andl3 x,y,z; extzv z,....,z
                   3873: 
                   3874:        * m68k.md (tstsi): Use cmpw instead of cmpl to test addr reg.
                   3875: 
                   3876:        * tm-m68k.h: Bugs for 68000 when frame size is over 64k.
                   3877:        For FUNCTION_PROLOGUE, just subtract from sp instead of fp.
                   3878:        For FUNCTION_EPILOGUE, must put the size into a0 and then
                   3879:        all insns must be indexed by a0.  And do this even on 68020.
                   3880: 
                   3881:        * tm-isi68.h: Similar changes.
                   3882:        * tm-news800.h, tm-hp9k320.h: Similar changes.
                   3883: 
                   3884: Wed Jan 20 04:38:21 1988  Richard Stallman  (rms at frosted-flakes)
                   3885: 
                   3886:        * cccp.c (error_with_line): New function.
                   3887:        Use it to report the "unterminated whatever" errors.
                   3888: 
                   3889:        * typecheck.c (build_unary_op): Recursive call had missing arg.
                   3890: 
                   3891:        * m68k.md (movhi): If MOTOROLA, the insn that fetches from a
                   3892:        case-dispatch table now defines the LI label as .+2.
                   3893:        * tm-news800.el, tm-hp9k320.h (PRINT_OPERAND_ADDRESS):
                   3894:        Don't subtract 2 when outputting the address in that insn.
                   3895: 
                   3896: Tue Jan 19 00:02:33 1988  Richard Stallman  (rms at frosted-flakes)
                   3897: 
                   3898:        * cse.c (cse_basic_block): Abort if more qtys were used than allocated.
                   3899: 
                   3900: Mon Jan 18 04:44:28 1988  Richard Stallman  (rms at frosted-flakes)
                   3901: 
                   3902:        * cccp.c (special_symbol): tm_mon is origin-0, not origin-1.
                   3903: 
                   3904:        * final.c (output_asm_insn): If %LETTER with no digits,
                   3905:        pass null pointer as the operand.
                   3906: 
                   3907:        * output-m68k.c (singlemove_string): Get rid of %e.
                   3908: 
                   3909:        * stmt.c (fixup_memory_subreg): Convert (SUBREG (MEM a)) to (MEM a').
                   3910:        * stmt.c (fixup_var_ref_1): Use that fn for operands of
                   3911:        SIGN_EXTRACT and ZERO_EXTRACT, since (SUBREG:SI (REG:QI...))
                   3912:        could have turned into (SUBREG:SI (MEM:QI...)), which is unsafe.
                   3913: 
                   3914:        * rtl.c (debug_rtx): Print an rtx on stderr, for debugging.
                   3915: 
                   3916: Sun Jan 17 04:37:20 1988  Richard Stallman  (rms at frosted-flakes)
                   3917: 
                   3918:        * gcc.c: options -M* treated like -M.
                   3919: 
                   3920:        * stmt.c (pushcase): Do nothing if the case index has error_mark type.
                   3921: 
                   3922:        * expr.c (expand_increment): Don't use queue for post-inc on memory
                   3923:        if the add insn requires register args.  (Better code for RISCs.)
                   3924: 
                   3925: Sat Jan 16 02:10:22 1988  Richard Stallman  (rms at frosted-flakes)
                   3926: 
                   3927:        * ns32k.md: Change register_operand to general_operand.
                   3928:        * ns32k.md (udivmoddisi4): Use match_dup where required.
                   3929:        Comment it out because it can't accept two independent output args.
                   3930: 
                   3931: Fri Jan 15 00:02:35 1988  Richard Stallman  (rms at frosted-flakes)
                   3932: 
                   3933:        * toplev.c: Include sys/time.h only for BSD.  For USG, use time.h.
                   3934:        This is correct for HPUX; don't know about others.
                   3935: 
                   3936:        * gcc.c (execute): Eliminate `union wait'.  Make `status' an int.
                   3937:        * gcc.c (execute) [USG]: Use fork instead of vfork.
                   3938: 
                   3939:        * final.c (output_source_line): Use ASM_OUTPUT_SOURCE_{FILENAME,LINE}
                   3940:        if they are defined.
                   3941: 
                   3942:        * tm-hp9k320.h: New name for tm-hpux.h.
                   3943:        * tm-hp9k320.h (ASM_OUTPUT_LOCAL): Add 3rd arg to `lcomm' statements.
                   3944:        * tm-hp9k320.h (ASM_OUTPUT_{DOUBLE,FLOAT}): Use `double' and `float'.
                   3945:        * tm-hp9k320.h (CALL_USED_REGISTERS): Don't save any 68881 regs.
                   3946:        * tm-hp9k320.h (CPP_PREDEFINES): different names defined.
                   3947:        * tm-hp9k320.h (HPUX_ASM, NO_DBX_FORMAT, ASM_SPEC): define these.
                   3948:        * tm-hp9k320.h (ASM_OUTPUT_OPCODE): Convert `ftst' to `ftest'.
                   3949:        * tm-hp9k320.h: Define ASM_OUTPUT_SOURCE_{FILENAME,LINE}.
                   3950: 
                   3951:        * m68k.md: Rename `hpux' conditionals to `HPUX_ASM'.
                   3952:        * m68k.md: Reverse `fcmp' args if HPUX_ASM.
                   3953: 
                   3954:        * cccp.c (print_deps): 2 means give all files, 1 means only user files.
                   3955:        * cccp.c (do_include): Support that.
                   3956:        * cccp.c (main): -MM sets 1, -M alone sets 2.
                   3957:        * cccp.c (main): Give fatal error if I/O error in writing.
                   3958: 
                   3959:        * toplev.c (fatal_io_error): Report I/O error on given filename,
                   3960:        and exit.
                   3961: 
                   3962:        * toplev.c (compile_file): Detect error writing asm_out_file.
                   3963:        Always put asm file's name in asm_file_name for err msg.
                   3964:        * symout.c (symout_finish): Detect error writing symfile.
                   3965:        * symout.c (symout_init): Save filename in symfile_name for err msg.
                   3966: 
                   3967:        * gen*.c: Return 1 if ferror (stdout)--in case disk is full.
                   3968: 
                   3969:        * local-alloc.c (block_alloc): Don't crash if 1st rtx
                   3970:        in a PARALLEL is not a SET.
                   3971: 
                   3972:        * tm-m68k.h, tm-news800.h (PRINT_OPERAND).  Eliminate code `%e'.
                   3973:        * m68k.md: Change `%e' to `e' everywhere.
                   3974:        * tm-hpux.h (ASM_OUTPUT_OPCODE): Output `move' as `mov'.
                   3975: 
                   3976:        * tm-m68k.h, tm-news800.h, tm-hpux.h (PRINT_OPERAND):
                   3977:        New code `%!' is output as the name for the cc register.
                   3978:        * m68k.md (insns that use andi to ccr): Use `%!' to avoid
                   3979:        conditionals.
                   3980: 
                   3981:        * cse.c: Record in qty_const_insn the insn that stored the
                   3982:        constant value of a qty.  When making a REG_WAS_0 note,
                   3983:        store in it the insn that established the value 0.
                   3984: 
                   3985:        * vax.md (movsi): When checking a REG_WAS_0 note,
                   3986:        verify that the insn it points to hasn't been deleted or made a NOTE.
                   3987: 
                   3988: Thu Jan 14 00:01:35 1988  Richard Stallman  (rms at frosted-flakes)
                   3989: 
                   3990:        * toplev.c: Eliminate error_with_line and warning_with_line.
                   3991:        * parse.y, decl.c: Change remaining calls to those two.
                   3992: 
                   3993:        * tree.c (get_unwidened, get_narrower): To see if a COMPONENT_REF
                   3994:        is unsigned, look at the FIELD_DECL, not at the COMPONENT_REF.
                   3995: 
                   3996:        * rtl.c (print_rtx): Print /v for the `volatil' bit.
                   3997:        * expr.c (expand_assignment expand_expr): If handling a COMPONENT_REF,
                   3998:        note whether it is volatile.
                   3999: 
                   4000:        * fold-const.c (fold): a call to split_tree missed an argument.
                   4001: 
                   4002:        * flow.c (volatile_refs_p): Scan an rtx for volatile mem refs.
                   4003:        * flow.c (life_analysis): Record in INSN_VOLATILE which insns
                   4004:        have any volatile mem refs.
                   4005:        * flow.c (mark_used_regs): Always mark an insn with volatile mem refs.
                   4006:        Always pass INSN as an arg.  New arg FINAL now says whether
                   4007:        this is the last time scanning.
                   4008:        * flow.c (propagate_block): Don't delete insns with volatile mem refs.
                   4009: 
                   4010:        * flow.c: Remove all refs to `obey_regdecls'.
                   4011:        Calling this with -noreg just doesn't help -W.
                   4012: 
                   4013: Wed Jan 13 01:13:07 1988  Richard Stallman  (rms at frosted-flakes)
                   4014: 
                   4015:        * decl.c (finish_decl): Error if auto var's size isn't known.
                   4016:        Change type to error_mark_node to avoid crash if the var
                   4017:        is used in an expression, since it has no DECL_RTL.
                   4018: 
                   4019:        * output-m68k.c (output_move_const_single): % -> %% for sprintf.
                   4020: 
                   4021:        * parse.y (yylex): Store token_buffer properly after ellipsis.
                   4022: 
                   4023:        * decl.c (duplicate_decls): Don't call layout_decl
                   4024:        for FUNCTION_DECL or TYPE_DECL.
                   4025: 
                   4026:        * toplev.c (warning_with_decl): New warning function with decl as arg.
                   4027:        * (error_with_decl): similar.
                   4028: 
                   4029:        * decl.c: Replace most `yylinerror' calls with `error_with_decl'.
                   4030: 
                   4031:        * decl.c (build_struct): Reform code to detect erroneous bit-fields.
                   4032:        All such errors are now detected here.
                   4033:        Promote bit-fields to int if appropriate.
                   4034:        If traditional, make all int bit-fields unsigned.
                   4035:        Set DECL_ALIGN for members that are not bit-fields.
                   4036: 
                   4037:        * decl.c (grokfield): Don't set DECL_ALIGN here.
                   4038: 
                   4039:        * stor-layout.c (layout_decl): Don't promote the type of a bit-field.
                   4040:        Use TREE_PACKED to distinguish a bit-field.
                   4041:        Don't check the width because build_struct did that.
                   4042: 
                   4043:        * m68k.md (cmpm): Reject if either operand (address) is a constant.
                   4044: 
                   4045: Tue Jan 12 15:11:20 1988  Richard Stallman  (rms at frosted-flakes)
                   4046: 
                   4047:        * cse.c (canon_reg): Never replace ANY hard reg from reg_rtx
                   4048:        because that could alter the machine mode.
                   4049: 
                   4050:        * tm-news800.h: Redefine INDIRECTABLE_1_ADDRESS only if MOTOROLA.
                   4051: 
                   4052: Mon Jan 11 13:15:45 1988  Richard Stallman  (rms at frosted-flakes)
                   4053: 
                   4054:        * jump.c (follow_jumps): If we find a cycle, make it a jump to self.
                   4055: 
                   4056:        * cse.c (predecide_loop_entry): Give up if chase more than 10 jumps.
                   4057: 
                   4058: Sun Jan 10 14:52:42 1988  Richard Stallman  (rms at frosted-flakes)
                   4059: 
                   4060:        * reload1.c (reload): basic_block_needs (new vector) gets 1
                   4061:        for each basic block that needs a reload.
                   4062:        * reload1.c (spill_hard_reg): Don't spill pseudos that are
                   4063:        confined to a basic block which has no need for any reloads.
                   4064:        * reload1.c (reload): Each cycle that any element of basic_block_needs
                   4065:        changes from 0 to 1, must re-spill all previously spilled regs.
                   4066: 
                   4067:        * regclass.c (record_address_regs):
                   4068:        Skip the charging of ICOST if it is 0.
                   4069: 
                   4070:        * flags.h, toplev.c: New flag -fvolatile.
                   4071:        * typecheck.c (build_indirect_ref): If flag_volatile,
                   4072:        every INDIRECT_REF is marked with TREE_THIS_VOLATILE.
                   4073: 
                   4074:        * fold-const.c (fold): Test in TRUTH_NOT_EXPR case was backward.
                   4075:        Also result type is always `int'.
                   4076: 
                   4077: Sat Jan  9 04:16:11 1988  Richard Stallman  (rms at rice-krispies)
                   4078: 
                   4079:        * flags.h (flag_traditional): New flag.
                   4080:        * toplev.c: recognize -ftraditional and -traditional.
                   4081:        * parse.y (yylex): If flag_traditional, don't recognize
                   4082:        `signed', `const' or `volatile'.
                   4083: 
                   4084:        * decl.c (pushdecl): If flag_traditional, any extern decl
                   4085:        takes effect at top level.
                   4086: 
                   4087:        * tree.c (lvalue_or_else): New 2nd arg for use in error message.
                   4088:        * typecheck.c: All callers pass 2nd arg.
                   4089: 
                   4090:        * global-alloc.c: allocno_preferred_reg can specify a preferred
                   4091:        hard reg for each allocno.  If so, try it first (new call to find_reg).
                   4092: 
                   4093:        * global-alloc.c (find_reg): New arg PREFREG specifies reg to try
                   4094:        first.
                   4095: 
                   4096:        * decl.c (build_struct): if :0 bit field at the end, round the
                   4097:        structure size to multiple of EMPTY_FIELD_BOUNDARY.
                   4098: 
                   4099:        * cse.c (make_regs_eqv): Was testing for reg_next_eqv[lastr] == 0
                   4100:        and should be == -1.
                   4101: 
                   4102:        * reload1.c (reload_as_needed): Fix invalid optimization deleting
                   4103:        the previous store into a pseudo-reg that feeds an input-reload.
                   4104:        It is not safe because a later insn may look in the pseudo's stack
                   4105:        slot for the value.  Delete the store only if we can eliminate the
                   4106:        pseudo entirely or if the current insn stores a new value there.
                   4107:        Also verify that reload_in[j] is a REG.
                   4108: 
                   4109:        * reload1.c (reload_as_needed): When doing an input reload from a
                   4110:        pseudo that was stored by the previous insn (not as a reload),
                   4111:        redirect the previous insn into the reload register, if this lets
                   4112:        us eliminate the pseudo entirely.
                   4113: 
                   4114:        * reload1.c (reload_as_needed): In both of the above cases, it's
                   4115:        impossible to prevent a stack slot since one was already assigned,
                   4116:        so don't alter reg_n_refs.  Instead, set reg_renumber to record
                   4117:        that this pseudo did get a hard reg.
                   4118: 
                   4119:        * stmt.c: Set `volatil' in pseudo-regs for the user's variables.
                   4120: 
                   4121:        * jump.c (delete_insn): Do nothing if insn already deleted.
                   4122: 
                   4123:        * tm-sun{2,3}.h: #define STRUCTURE_SIZE_BOUNDARY 2
                   4124:        for compatibility with Sun PCC.  Note that 4.3 vax PCC
                   4125:        does not want this.
                   4126: 
                   4127:        * fold-const.c: Replace truncate_unsigned with force_fit_type
                   4128:        which truncates unsigned types and sign-extends signed types.
                   4129: 
                   4130:        * expr.c (do_jump): emit_queue before outputting the jump insns
                   4131:        that use the comparison.
                   4132: 
                   4133:        * stmt.c: Error message for any goto that jumps into a
                   4134:        binding contour that restores a stack level.
                   4135: 
                   4136:        TREE_PACKED (label) means label was defined inside
                   4137:        such a binding contour that is now exited.  Using such a label
                   4138:        is an error.
                   4139: 
                   4140:        TREE_ADDRESSABLE (label) means label was used from a place
                   4141:        outside all such binding contours.  If this is 1 when
                   4142:        TREE_PACKED is set to 1, it is an error.
                   4143: 
                   4144:        Any other invalid goto must have a fixup.  fixup_gotos detects
                   4145:        such invalid gotos.  fixup_gotos takes a second arg, which
                   4146:        is the first insn of the contour now being exited.
                   4147: 
                   4148:        * GNU C version 1.17.
                   4149: 
                   4150: Local Variables:
                   4151: mode: indented-text
                   4152: left-margin: 8
                   4153: fill-column: 76
                   4154: version-control: never
                   4155: End:

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