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Annotation of gcc/OChangeLog, revision 1.1

1.1     ! root        1: 
        !             2: Sun May 22 12:25:06 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !             3: 
        !             4:        * Version 1.22 released.
        !             5: 
        !             6:        * reload1.c (reload): Spilling isn't finished till max_nongroups is 0.
        !             7: 
        !             8:        * tm-encore.h (PRINT_OPERAND): No `$' before a CONST.
        !             9: 
        !            10: Sat May 21 13:08:54 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !            11: 
        !            12:        * fold-const.c (combine): Typo in MIN_EXPR, MAX_EXPR.
        !            13: 
        !            14:        * reload1.c (reload): Was counting insn_groups as total size of groups,
        !            15:        not number of groups.
        !            16:        A new spilled group counts against group-needs of superclasses.
        !            17: 
        !            18:        * parse.y (parmlist{,_or_identifiers}_1): In error case,
        !            19:        return a tree list just as in the other cases.
        !            20: 
        !            21: Fri May 20 02:14:51 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !            22: 
        !            23:        * config-vax.h, config-m68k.h: If __GNUC__, use builtin-alloca.
        !            24: 
        !            25:        * genpeep.c (match_rtx): Generated code was testing the wrong rtx
        !            26:        when testing an int or string at a nonzero index in the rtx.
        !            27: 
        !            28:        * reload.c (find_reloads): Typo checking `modified' for conflict
        !            29:        with an earlyclobber.
        !            30: 
        !            31:        * reload.c (find_equiv_reg): Reject stack ptr as return value.
        !            32: 
        !            33:        * expr.c (expand_builtin): Alloca must do pending stack adjust.
        !            34: 
        !            35: Thu May 19 13:01:01 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !            36: 
        !            37:        * flow.c (propagate_block): Skipping back across libcall didn't happen
        !            38:        due to failing to set PREV.
        !            39: 
        !            40:        * expr.c (emit_library_call): Code to increment and decrement
        !            41:        current_args_size broke since emit_call_1 was changed to restore it.
        !            42: 
        !            43:        * combine.c (try_combine): When i1 or i2 auto-incs a reg, don't combine
        !            44:        if i3 uses that reg.
        !            45: 
        !            46:        * config-hp9k3.h: #define bcopy, bcmp, bzero here.
        !            47:        * conf-hp9k320.h: Delete file.
        !            48: 
        !            49:        * integrate.c: Don't include strings.h--no need.
        !            50: 
        !            51:        * stmt.c (expand_asm_operands): Don't make zero-length vectors.
        !            52: 
        !            53:        * loop.c (scan_loop): After a fcn call, maybe-trap insns can't move.
        !            54:        The fcn call might exit and that would prevent the trap.
        !            55: 
        !            56:        * reload1.c (reload): Set reload_first_uid to next uid to be used.
        !            57:        * reload.c (find_equiv_reg): Use reload_first_uid to ignore insns
        !            58:        that are due to reloading--only if reload_reg_p is not 0 or 1.
        !            59: 
        !            60: Wed May 18 22:11:20 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !            61: 
        !            62:        * typecheck.c (build_unary_op): Don't complain about array
        !            63:        as argument to `!'.
        !            64: 
        !            65:        * decl.c (pushdecl): If locally declaring an extern function,
        !            66:        check the identifier's global value in case it's an inline function.
        !            67: 
        !            68: Mon May 16 03:06:08 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !            69: 
        !            70:        * output-ns32k.c (output_shift_insn): New fn, maybe turn shift to adds.
        !            71:        (reg_or_mem_operand): Predicate for a non-immediate general_operand.
        !            72:        * tm-ns32k.h (CONST_OK_FOR_LETTER_P): Define letter K.
        !            73:        * ns32k.md: Use output_shift_insn for various addr insns that shift.
        !            74:        Don't allow nonexplicit constants in lprd, multiply or truncate insns.
        !            75:        Use reg_or_mem_operand for constraint in op1 of divide insns;
        !            76:        a constant there causes regclass to screw up.
        !            77:        Split alternative constraints on the bit-field insns to avoid
        !            78:        out-of-range operands in exts, inss.  Some cases of extraction
        !            79:        can be done faster via memory.
        !            80: 
        !            81:        * flow.c (mark_set_1): When adding a REG_DEAD note, inc reg_n_deaths.
        !            82: 
        !            83:        * dbxout.c (dbxout_type_def): Do nothing for {integer,char}_type_node.
        !            84: 
        !            85: Sun May 15 00:56:44 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !            86: 
        !            87:        * tm-sequent.h, tm-ns32k.h, tm-encore.h (PRINT_OPERAND):
        !            88:        Was treating SF's as SI's.
        !            89: 
        !            90:        * expr.c (emit_move_insn): Check all CONST_DOUBLEs for
        !            91:        LEGITIMATE_CONSTANT_P and put them in memory if not.
        !            92: 
        !            93:        * local-alloc.c (combine_regs): Allow a reg to be tied to a qty
        !            94:        if the reg's class is contained in the qty's class
        !            95:        (as well as if the reg's class contains the qty's class as before).
        !            96:        Rename qty_reg_class to qty_min_class and make it the smallest
        !            97:        class of any reg tied to the qty.
        !            98:        (reg_class_subset_p, reg_meets_class_p, update_qty_class):
        !            99:        New subroutines to implement this.
        !           100:        (local_alloc): Init reg_qty to -1 for pseudos not in cur. basic block.
        !           101:        (reg_is_born): Abort if pseudo not in basic block has -2 in reg_qty.
        !           102: 
        !           103:        * jump.c (rtx_renumbered_equal_p): Insist that modes of REGs match.
        !           104: 
        !           105: Sat May 14 01:05:35 1988  Richard Stallman  (rms at lucky-charms.ai.mit.edu)
        !           106: 
        !           107:        * stmt.c (expand_return): Empty frame frame_offset isn't nec. 0.
        !           108: 
        !           109:        * expr.c (emit_call_1): Use stack_size_rtx everywhere appropriate.
        !           110: 
        !           111:        * decl.c (init_decl_processing): Set sizetype to `unsigned long'
        !           112:        if `int' is less than a word.
        !           113: 
        !           114:        * stddef.h (size_t, ptrdiff_t): Both are now long.
        !           115: 
        !           116: Fri May 13 01:06:00 1988  Richard Stallman  (rms at lucky-charms.ai.mit.edu)
        !           117: 
        !           118:        * emit-rtl.c (gen_lowpart): Handle non-lowpart subreg as arg.
        !           119: 
        !           120:        * recog.c (register_operand): VOIDmode means allow any mode.
        !           121:        (immediate_operand, nonmemory_operand): Likewise.
        !           122: 
        !           123:        * emit-rtl.c (classify_insn): Update for changed CALL_INSN format.
        !           124:        (emit): New function to emit an rtl pattern as the right kind of insn.
        !           125:        * jump.c (simplejump_p): No longer static.
        !           126: 
        !           127:        * genemit.c (gen_expand): For match_operand at top level, call `emit'.
        !           128:        Use `emit_call_insn' when appropriate.
        !           129:        (gen_exp): Handle rtx's that contain strings.
        !           130: 
        !           131:        * final.c, symout.c: If not NO_DBX_FORMAT, include stab.h to get the
        !           132:        N_... symbols.  Use their default definitions only if they're undef.
        !           133: 
        !           134:        * expr.c (expand_call) [no PUSH_ROUNDING]: Always set argblock
        !           135:        if there are any stack-passed arguments.
        !           136: 
        !           137:        * typecheck.c (build_unary_op): Mark all increment-exprs volatile.
        !           138: 
        !           139:        * recog.c (reg_renumbered_fits_class_p): Delete private copy of
        !           140:        reg_class_contents.
        !           141: 
        !           142:        * reload1.c (forget_old_reloads): Handle PARALLEL case by recursion.
        !           143:        Explicit store into a spilled reg invalidates old reloaded contents;
        !           144:        this can occur when we drop through into a basic block whose need was 0
        !           145:        (and so whose local pseudos were not spilled).
        !           146: 
        !           147:        * gcc.c (main): If -v, print gcc's own version; also no error msg
        !           148:        if no input files.
        !           149: 
        !           150:        * loop.c (may_trap_p): Mem ref to nonconstant address may trap.
        !           151:        (scan_loop): Check may_trap_p only when insn is in other respects ok.
        !           152: 
        !           153:        * cexp.y: #include config.h (for decl of alloca on some machines).
        !           154: 
        !           155: Thu May 12 17:24:19 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           156: 
        !           157:        * regclass.c (regclass): When inserting an insn at start of block,
        !           158:        update basic_block_head.
        !           159: 
        !           160: Wed May 11 00:47:09 1988  Richard Stallman  (rms at corn-chex.ai.mit.edu)
        !           161: 
        !           162:        * stmt.c (assign_parms): DECL_OFFSET should be offset as passed
        !           163:        (not including big-endian width-change correction).
        !           164: 
        !           165:        * typecheck.c (shorten_compare): Set unsignedp[01] right in case
        !           166:        where get_narrower makes no change.
        !           167:        (build_binary_op_nodefault): Likewise for shortening shifts.
        !           168: 
        !           169:        * stmt.c (expand_end_case): Use type_for_size to get the type
        !           170:        to convert the index to, since `int' is wrong if -mshort.
        !           171: 
        !           172:        * decl.c (grokdeclarator): Don't check PARM type for completeness.
        !           173:        (grokparms): If fn definition, check all parm types for completeness.
        !           174:        (store_parm_decls): Likewise.
        !           175: 
        !           176: Tue May 10 22:42:13 1988  Richard Stallman  (rms at corn-chex.ai.mit.edu)
        !           177: 
        !           178:        * typecheck.c (store_init): For invalid init, store error_mark_node.
        !           179:        * varasm.c (assemble_variable): Ignore error_mark as an init.
        !           180:        * stmt.c (expand_decl): If init is error_mark, init to 0 if possible.
        !           181:        This avoids a spurious "uninitialized variable" warning.
        !           182: 
        !           183: Sun May  8 17:08:07 1988  Richard Stallman  (rms at lucky-charms.ai.mit.edu)
        !           184: 
        !           185:        * tm-hp9k320.h: Define STRUCTURE_SIZE_BOUNDARY.
        !           186: 
        !           187:        * decl.c (get_parm_info): Replaces get_parm_types.  Returns a tree_list
        !           188:        containing parmdecls and tag list as well as type list.
        !           189:        (grokparms): Accept that tree_list as argument.
        !           190:        (grokdeclarator): Calling grokparms, say "not a definition" for the
        !           191:        function declarators for arg or value types within a definition.
        !           192: 
        !           193:        * parse.y: Call get_parm_info.
        !           194:        (parmlist_or_identifiers): If identifiers, make a tree_list
        !           195:        like the one get_parm_info returns.
        !           196: 
        !           197: Fri May  6 16:44:19 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           198: 
        !           199:        * m68k.md (casesi): Delete template aside from match_operand's.
        !           200: 
        !           201:        * tm-encore.h: New file from Robert Brown.
        !           202: 
        !           203:        * ns32k.md: Use %c in some addr insns.
        !           204:        (tst*): Use {d,f,}const0_rtx to make the constant 0; OS-independent.
        !           205:        (call, call_value): Use %? before address in a bsr.
        !           206: 
        !           207:        * output-ns32k.c (print_operand_address): To output a local label,
        !           208:        use `output_asm_label'.
        !           209:        Make SEQUENT_ADDRESS_BUG conditionals happen at compile time.
        !           210: 
        !           211:        * tm-ns32k.h: Delete SEQUENT_HAS_FIXED_THEIR_BUG.
        !           212:        (PRINT_OPERAND): Output nothing for `%?'.
        !           213:        * tm-sequent.h: (PRINT_OPERAND): Output nothing for `%?'.
        !           214: 
        !           215:        * final.c (output_asm_label): No longer `static'.
        !           216: 
        !           217: Thu May  5 09:03:37 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           218: 
        !           219:        * explow.c (memory_address): Ignore flag_force_reg unless optimize.
        !           220:        Also ignore it for addresses of stack slots (avoid invalid REG_EQUIVs).
        !           221: 
        !           222:        * typecheck.c (digest_init): If traditional, allow `char x[100]=0;'.
        !           223: 
        !           224:        * tree.c (get_unwidened): Don't alter a COMPONENT_REF if
        !           225:        innerprec equals the precision of the existing type.
        !           226:        It was changing pointers to integers.
        !           227: 
        !           228:        * m68k.md (movdi): Put all fpregs in separate constraint alternatives
        !           229:        and handicap them so spill reg won't be an fp reg.
        !           230: 
        !           231:        * parse.y (yyerror): Use the arg as part of the error message.
        !           232: 
        !           233:        * decl.c (start_function): Give the RESULT_DECL type int rather
        !           234:        than char or short.
        !           235:        * typecheck.c (c_expand_return): Convert value from fn's return type
        !           236:        to the RESULT_DECL's type.
        !           237: 
        !           238:        * Avoid generating dbx xrefs to enums, since dbx loses on them.
        !           239:        Do this by outputting all types in order of definition.
        !           240:        This is done only for top-level types; problem remains for local ones.
        !           241: 
        !           242:        * decl.c (finish_decl): Do rest_of_decl_compilation for TYPE_DECLs.
        !           243:        * toplev.c (rest_of_decl_compilation): Do dbxout_symbol for them.
        !           244: 
        !           245:        * dbxout.c (dbxout_symbol): Check DECL_RTL only for fns and variables.
        !           246:        For a TYPE_DECL, ignore it if the type was already output
        !           247:        and its preferred name is the TYPE_DECL.  Else output type in full.
        !           248: 
        !           249:        * decl.c (pushdecl): Don't prefer typedef names to type tag names.
        !           250: 
        !           251:        * stor-layout.c (chain_type): Build chain in forward order.
        !           252: 
        !           253: 
        !           254:        * tm-3b1.h (ASM_OUTPUT_CASE_LABEL): Error getting length of table.
        !           255: 
        !           256:        * tm-3b1.h: #define SGS_3B1 was missing.
        !           257: 
        !           258:        * typecheck.c (build_compound_expr): Ignore non-volatile subexprs.
        !           259: 
        !           260:        * fold-const.c (fold): Simplify (unsigned) foo >= 0, etc.
        !           261: 
        !           262:        * stor-layout.c (layout_type): Set TYPE_PRECISION of ptr types.
        !           263: 
        !           264: Wed May  4 08:06:25 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           265: 
        !           266:        * parse.y: Don't use the Bison @ construct, since it makes parser slow.
        !           267: 
        !           268:        * decl.c (finish_function): Delete FILENAME and LINE args.
        !           269: 
        !           270:        * typecheck.c (digest_init): No pedantic warning for array="string".
        !           271: 
        !           272: Tue May  3 09:09:30 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           273: 
        !           274:        * toplev.c (main): Ignore `-Wcomment'.
        !           275:        * gcc.c: Pass -Wall to cpp (which treats it like -Wcomment).
        !           276: 
        !           277:        * tm-isi68.h: Greatly simplified; now works only with GAS.
        !           278: 
        !           279:        * tm-m68k.h (EMPTY_FIELD_BOUNDARY): now 16 (right on Sun, ISI and HP).
        !           280:        * tm-sun3.h: No need to redefine it.
        !           281: 
        !           282:        * decl.c (finish_struct): Don't ever make DECL_ALIGN smaller.
        !           283: 
        !           284:        * decl.c: Rename min, max to MIN, MAX.
        !           285: 
        !           286:        * typecheck.c (convert_for_assignment): Avoid warning if assigning
        !           287:        a `void *' from a `const void *'.
        !           288: 
        !           289:        * combine.c (FAKE_EXTEND_SAFE_P): Turn off for mem refs; avoid faults.
        !           290: 
        !           291: Mon May  2 07:28:27 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           292: 
        !           293:        * tm-vax.h: Support -mg switch to use g-float instead of d-float.
        !           294:        New macros TARGET_G_SWITCH, ASM_DOUBLE_CHAR.
        !           295:        Changes in TARGET_SWITCHES, ASM_OUTPUT_DOUBLE.
        !           296:        Define code `#' for PRINT_OPERAND.
        !           297:        * vax.md: use `#' in opcodes for doubleword float.
        !           298: 
        !           299:        * tm-vax.h: Define UDIVSI3_LIBCALL and UMODSI3_LIBCALL.
        !           300: 
        !           301:        * cccp.c (main, do_include): Implement -I- switch.
        !           302: 
        !           303:        * jump.c (jump_optimize): When hunting NOTE_INSN_FUNCTION_END,
        !           304:        skip final RETURN (found on the vax).
        !           305: 
        !           306:        * toplev.c (main): -Wall is equiv to all -W switches combined.
        !           307: 
        !           308:        * stmt.c (expand_decl, expand_end_bindings,
        !           309:        expand_{start,end}_function).  The -noreg treatment of `register' vars
        !           310:        is extended to vars used as addresses of vars in memory (varying-size
        !           311:        structures).
        !           312:        (use_variable): Emit USE for regs used in specified rtx.
        !           313: 
        !           314:        * cse.c (fold_cc0): Stack-frame addresses are always nonzero.
        !           315:        (fold_rtx): 0200 bit in prev_insn_cc0 means only zeroness is known.
        !           316: 
        !           317:        * parse.y (parmlist): poplevel needs 3 args.
        !           318: 
        !           319: Sun May  1 07:20:34 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           320: 
        !           321:        * decl.c (start_function): typo checking for incomplete return type.
        !           322: 
        !           323:        * emit-rtl.c (restore_reg_data): If a pseudo appears nowhere,
        !           324:        don't leave its slot empty; create a pseudo for that slot.
        !           325: 
        !           326:        * Version 1.21 released.
        !           327: 
        !           328:        * expr.c (expand_call): Merge duplicate code for structure_value_addr.
        !           329: 
        !           330:        * emit-rtl.c (restore_reg_data): Delete error check; it's legit for
        !           331:        a pseudo reg to appear nowhere in the rtl.
        !           332: 
        !           333: Sat Apr 30 07:35:31 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           334: 
        !           335:        * integrate.c (copy_rtx_and_substitute): Fix typo for arg_pointer_rtx.
        !           336: 
        !           337:        * decl.c (poplevel): Undo previous change with #if 0.
        !           338: 
        !           339:        * stmt.c: `struct nesting' now records the depth on the stack.
        !           340:        Each expand_start... must update and record the depth;
        !           341:        each expand_end... uses macro POPSTACK to pop.
        !           342:        This way, if a level isn't explicitly popped, it won't cause
        !           343:        circular structure.
        !           344: 
        !           345:        * dbxout.c (dbxout_type): Replace with main variant only if incomplete.
        !           346: 
        !           347:        * typecheck.c (build_unary_op): Test of `pedantic' was backwards.
        !           348: 
        !           349:        * expr.c (STACK_BYTES): Typo in definition.
        !           350: 
        !           351:        * typecheck.c (build_binary_op_nodefault): Rename code1 to code0,
        !           352:        and likewise for code2, tt1, tt2.
        !           353: 
        !           354:        * expr.c (expand_call): Wrong arg order for warning_with_decl.
        !           355: 
        !           356: Fri Apr 29 08:41:06 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           357: 
        !           358:        * integrate.c (copy_decl_tree): New arg is depth in recursion.
        !           359:        Always discard the outermost LET_STMT being copied; never discard any
        !           360:        others.  This way the copied LET_STMTs correspond to the copied NOTEs.
        !           361: 
        !           362:        * varasm.c (decode_rtx_const): For SYMBOL_REF, use string address
        !           363:        not address of the rtx.  Library fns have only one copy of the name
        !           364:        but many copies of the SYMBOL_REF.
        !           365: 
        !           366:        * expr.c (emit_call_1): New arg OLD_ARGS_SIZE is used to reset
        !           367:        current_args_size.
        !           368:        (emit_library_call, expand_call): Pass new arg; don't restore it here.
        !           369: 
        !           370:        * flow.c (life_analysis): Don't mark sp live at end if fn is empty.
        !           371: 
        !           372:        * parse.y (parse_or_identifiers_1): Handle `error' in here, not in
        !           373:        callers notype_declarator etc.  Also read the closeparen here.
        !           374: 
        !           375: Thu Apr 28 12:43:52 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           376: 
        !           377:        * expmed.c (expand_shift): In extzv strategy, handle the operand
        !           378:        predicates for operands 0, 1 and 3.  (Not needed for 2.)
        !           379:        * vax.md: extzv pattern for SImode op1 must recognize general_operand
        !           380:        since the pattern named "extzv" allows them.
        !           381: 
        !           382: Wed Apr 27 00:52:44 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           383: 
        !           384:        * expr.c (emit_call_1): New arg NEXT_ARG_REG describes # regs
        !           385:        used for passing args.
        !           386:        (emit_library_call, expand_call): Provide that argument.
        !           387: 
        !           388:        * explow.c (round_push): New fn: round arg up to STACK_BOUNDARY.
        !           389:        * expr.c (expand_builtin): Use round_push on size for __builtin_alloca.
        !           390:        * stmt.c (expand_decl): Likewise for variable-size objects.
        !           391:        * expr.c (expand_call): Likewise for args_size.var.
        !           392:        Also use STACK_BOUNDARY to round a constant arg-block size.
        !           393:        Pass emit_call_1 that rounded value.
        !           394:        (emit_library_call): Round arg_size with STACK_BOUNDARY.
        !           395:        * tm-spur.h: Define STACK_BOUNDARY instead of ROUND_CALL_BLOCK_SIZE.
        !           396:        * tm-m68k.h: Define STACK_BOUNDARY as 16.
        !           397: 
        !           398:        * expr.c (emit_call_1): Don't change current_args_size.
        !           399:        (emit_library_call, expand_call): Always restore current_args_size
        !           400:        to ambient value, after calling emit_call_1.
        !           401: 
        !           402:        * tm-hp9k320.h: Don't define USG here.
        !           403:        * config-hp9k3.h: New file.  USG defined here.
        !           404: 
        !           405:        * tm-3b1.h: #undef ASM_OUTPUT_ASCII (a defn came from tm-hp9k320.h).
        !           406: 
        !           407:        * decl.c (grokdeclarator primarily): Cast all RID_... to (int) before
        !           408:        using them in arithmetic.  Placates CC on Sequent.
        !           409: 
        !           410:        * emit-rtl.c (emit_jump_insn): Return proper value, for a SEQUENCE.
        !           411:        * emit-rtl.c (emit_call_insn): Handle SEQUENCE like emit_jump_insn.
        !           412: 
        !           413: Tue Apr 26 02:41:26 1988  Richard Stallman  (rms at lucky-charms.ai.mit.edu)
        !           414: 
        !           415:        * cccp.c (macroexpand): If traditional, don't disable called macro.
        !           416:        (macarg1): Was failing to count backslash-newline inside a string
        !           417:        in a macro arg as part of file's linenumber.
        !           418: 
        !           419: Mon Apr 25 18:46:53 1988  Richard Stallman  (rms at lucky-charms.ai.mit.edu)
        !           420: 
        !           421:        * jump.c (jump_optimize): Don't do April 20 optimization on first
        !           422:        iteration; let other simpler opts be done before this is considered.
        !           423: 
        !           424: Sun Apr 24 02:45:28 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           425: 
        !           426:        * tree.c (staticp): a CONSTRUCTOR can be static.
        !           427: 
        !           428:        * varasm.c (output_constant_def): Always return memref, not address.
        !           429: 
        !           430:        * decl.c (complete_array_type): New fn, make an array type complete
        !           431:        based on an initializer.
        !           432:        (finish_decl): Use complete_array_type.
        !           433:        * parse.y (expr_no_commas): When parsing a constructor,
        !           434:        Use complete_array_type on constructors for incomplete array types.
        !           435: 
        !           436:        * typecheck.c (digest_init, store_init_value,process_init_constructor):
        !           437:        It's now TREE_STATIC, not TREE_ADDRESSABLE, that records that all elts
        !           438:        in a CONSTRUCTOR are simple constants.
        !           439:        (digest_init): A CONSTRUCTOR with non-null type is treated as ordinary
        !           440:        expression, not as a braced initializer.
        !           441:        Allow init of an array from an array-valued expr; warn if pedantic.
        !           442:        * expr.c (expand_expr, CONSTRUCTOR case): Put in memory only if static.
        !           443:        Was making an extraneous level of MEM; output_constant_def does it all.
        !           444: 
        !           445:        * typecheck.c (build_unary_op): Allow ADDR_EXPR of static CONSTRUCTOR.
        !           446:        (default_conversion): Likewise.
        !           447:        (initializer_constant_valid_p): Constructor is ok if static.
        !           448: 
        !           449:        * gcc.c: Change -fnostd... to -nostd...
        !           450:        * cccp.c (main): Likewise.
        !           451: 
        !           452:        * Everywhere: Use REG_NOTE_KIND to get the kind of a reg note.
        !           453: 
        !           454:        * rtl.c (find_regno_note): New function.
        !           455:        * flow.c (flow_deadp): Deleted; caller uses find_regno_note.
        !           456:        * global-alloc.c (reg_dead_p): Deleted.
        !           457:        (global_conflicts): Use find_regno_note instead of reg_dead_p.
        !           458: 
        !           459:        * final.c (final) Use find_reg_note to look for a REG_INC.
        !           460:        * combine.c (insn_has_inc_p): deleted; callers use find_reg_note.
        !           461:        (try_combine): Use find_reg_note whenever looking for a REG_INC.
        !           462:        (regno_dead_p, remove_death): Check the REG_NOTE_KIND before assuming
        !           463:        that the datum in it is a REG.
        !           464:        * reload1.c (reload): Use find_reg_note to find a REG_EQUIV.
        !           465: 
        !           466:        * gcc.c: Don't delete .o files if not all compilations succeed.
        !           467:        (record_temp_file): New arg SUCCESS_ONLY--delete file only if succeed.
        !           468:        (delete_temp_files): New arg SUCCESS says compilation succeeded.
        !           469:        (store_arg): Now 3 possibilities for arg TEMPNAMEP; 2 = del on success.
        !           470:        (do_spec_1): For %d, set delete_this_arg to 2.
        !           471: 
        !           472:        * decl.c (poplevel): Warn about any still-incomplete type-tags.
        !           473: 
        !           474: Sat Apr 23 02:54:16 1988  Richard Stallman  (rms at rice-krispies.ai.mit.edu)
        !           475: 
        !           476:        * expr.c (expand_builtin): For alloca, round arg up to multiple
        !           477:        of PARM_BOUNDARY.  Also to convert it to Pmode unless it already is.
        !           478: 
        !           479:        * stor-layout.c (layout_union): Bug in 14 April change:
        !           480:        use caller-specified alignment as minimum, not as maximum.
        !           481: 
        !           482:        * parse.y (skip_white_space): Avoid infinite loop on unterm. comment.
        !           483: 
        !           484: Fri Apr 22 00:22:59 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           485: 
        !           486:        * cccp.c: Text following #else or #endif is just a warning.
        !           487:        (rescan): Digit-case was dropping into the $-case; reorder.
        !           488: 
        !           489:        * cccp.c (rescan): Comment start when -traditional was output as
        !           490:        `/*'; should be nothing.
        !           491: 
        !           492:        * jump.c (jump_optimize): Fix prev change:
        !           493:        do nothing if range1end == range2end;
        !           494:        don't lose any NOTEs when splicing.
        !           495: 
        !           496:        * flow.c (propagate-block): For CALL_INSN, clobber the call-used regs
        !           497:        only after mark_set_regs is done; avoids confusion about lifespan
        !           498:        of function value reg.
        !           499: 
        !           500:        * gcc.c: Pass -Wcomment to cpp.
        !           501: 
        !           502:        * cccp.c (main, rescan): If -Wcomment, warn if `/*' inside comment.
        !           503: 
        !           504:        * decl.c (duplicate_decls): Ignore `inline' decl following definition.
        !           505: 
        !           506:        * m68k.md (casesi): Split it up into subroutines, so insns emitted
        !           507:        by the call to memory_address (on 68000) come in the right place.
        !           508: 
        !           509:        * combine.c (record_dead_and_set_regs): Notice storing in a SUBREG.
        !           510: 
        !           511:        * integrate.c (expand_inline_function): Insn to copy a subroutine's
        !           512:        return-value was being output twice, once incorrectly.
        !           513: 
        !           514:        * reload.c (find_equiv_reg): A stack-push insn does not invalidate
        !           515:        an equiv for a goal in memory.
        !           516:        Any other write to memory does invalidate any goal in memory
        !           517:        (PARALLEL case failed to check for this).
        !           518: 
        !           519:        * expmed.c (expand_shift): In the extzv clause, force shifted value
        !           520:        out of memory if -fforce-mem.
        !           521: 
        !           522:        * print-tree.c (prtypeinfo): Some attributes were missing.
        !           523:        (dump): In ..._TYPE nodes, ignore the TREE_CHAIN field.
        !           524: 
        !           525:        * cse.c (note_mem_written): Pushing on stack does not invalidate mem.
        !           526: 
        !           527:        * vax.md (extv/andl peephole opt): Made incorrect code if output was
        !           528:        pushed on stack.  Added special case code.
        !           529:        (extv, extzv for SImode operand): Require register_operand.
        !           530: 
        !           531: Thu Apr 21 00:24:52 1988  Richard Stallman  (rms at corn-chex.ai.mit.edu)
        !           532: 
        !           533:        * stmt.c (assign_parms): Round current_function_pretend_args_size up.
        !           534: 
        !           535:        * integrate.c: `pushlevel' arg was missing.
        !           536: 
        !           537:        * dbxout.c (dbxout_type): Undo rest of March 29 change:
        !           538:        When a named type is first seen inside another type, output an xref
        !           539:        and let the real definition come out later.
        !           540:        It is strange that Sun dbx has sometimes appeared to demand
        !           541:        one strategy and sometimes appeared to demand the other.
        !           542: 
        !           543:        * typecheck.c (convert_for_assignment): Allow conversion to or from
        !           544:        `const void *', etc., unless pedantic.
        !           545: 
        !           546:        * decl.c (get_parm_types): For `foo (void){}', set last_function_parms
        !           547:        to nil so store_parm_decls won't lose.
        !           548: 
        !           549:        * combine.c (subst): (plus (plus X N) -N) => X.
        !           550: 
        !           551:        * explow.c ({anti_,}adjust_stack): Don't make a copy of
        !           552:        `stack_pointer_rtx'.
        !           553: 
        !           554:        * integrate.c (expand_inline_function): Typo testing for the
        !           555:        USE that indicates a CALL_INSN's value is being returned.
        !           556: 
        !           557:        * expr.c (expand_builtin, alloca case): Copy arg to reg before
        !           558:        adjusting stack, to avoid invalid insns on some machines.
        !           559: 
        !           560: Wed Apr 20 00:15:14 1988  Richard Stallman  (rms at rice-krispies.ai.mit.edu)
        !           561: 
        !           562:        * typecheck.c (build_binary_op_nodefault): When shortening,
        !           563:        get_narrower may make no change because ARGn is already narrow.
        !           564:        In this case, set UNSIGNEPn from ARGn's type.
        !           565: 
        !           566:        * typecheck.c: Rename ARG1,ARG2 to ARG0,ARG1, etc. in several fns.
        !           567: 
        !           568:        * tm-vax.h: Turn off continuation on DBX output.
        !           569: 
        !           570:        * typecheck.c (build_function_call): Don't change __builtin_ffs to an
        !           571:        FFS_EXPR.  Note that __builtin_alloca has always made a CALL_EXPR.
        !           572:        * expr.c (expand_builtin): New function expands all CALL_EXPRs that
        !           573:        are really built-in functions.
        !           574:        (preexpand_calls): Do nothing to a CALL_EXPR for a built-in function.
        !           575: 
        !           576:        * loop.c (count_loop_regs_set): Don't move a reg that is in a CLOBBER.
        !           577: 
        !           578:        * stupid.c (stupid_mark_refs): Was getting hard reg's mode from
        !           579:        the wrong place.
        !           580: 
        !           581:        * rtl.c (note_stores): Typo in checking vector elt for SET vs CLOBBER.
        !           582: 
        !           583:        * stmt.c (expand_end_bindings): If restoring stack level, 
        !           584:        first do pending stack adjust (so it won't be done erroneously after).
        !           585:        (expand_goto): likewise.
        !           586: 
        !           587:        * rtl.h: LABEL_NUSES was an rtx.  It should be an int.
        !           588:        * stmt.c (expand_label, expand_goto): Delete frobbing with LABEL_NUSES;
        !           589:        the value stored there was the same as the CODE_LABEL rtx.
        !           590: 
        !           591:        * jump.c (jump_optimize): Detect  if (foo) ...; else { ... break;}
        !           592:        and change to  if (! foo) { ... break;} else ...; so can drop out.
        !           593:        (next_label): New fn returns the next label after given insn.
        !           594: 
        !           595: Tue Apr 19 21:30:05 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           596: 
        !           597:        * flow.c (insn_dead_p): Delete special handling for stack ptr.
        !           598:        (mark_set_regs, mark_used_regs): Likewise.
        !           599:        (life_analysis): Mark stack ptr live at end of fn if necessary.
        !           600:        (propagate_block): Mark stack ptr live leading up to a CALL_INSN.
        !           601: 
        !           602:        * jump.c (jump_optimize): #if 0 around stack-adjust-deletion code.
        !           603: 
        !           604:        * cse.c (fold_rtx): Change const_arg from an array to 3 separate
        !           605:        scalars for the first three operands.
        !           606:        Handle SIGN_EXTEND and ZERO_EXTEND.
        !           607: 
        !           608:        * integrate.c (copy_rtx_and_substitute): If arg is 0, return 0.
        !           609:        (expand_inline_function): Separate vars for old pattern and new insn.
        !           610: 
        !           611:        * expr.c (expand_call): Set TREE_ADDRESSABLE if call is not inlined.
        !           612: 
        !           613: Tue Apr 19 02:25:22 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           614: 
        !           615:        * Version 1.20 released.
        !           616: 
        !           617:        * tm-ns32k.h: Define new reg class GEN_OR_FLOAT_REGS
        !           618:        so that GENERAL_REGS and FLOAT_REGS have a union.
        !           619: 
        !           620:        * tm-ns32k.h (GO_IF_LEGITIMATE_ADDRESS): Recognize a stack-push.
        !           621:        * ns32k.md: Many constraints must now allow or reject pushes.
        !           622:        Delete the special patterns for pushing.
        !           623: 
        !           624: Mon Apr 18 06:02:39 1988  Richard Stallman  (rms at rice-krispies.ai.mit.edu)
        !           625: 
        !           626:        * reload1.c (forget_old_reloads): For a multiword hard reg,
        !           627:        forget old reloads for each word.
        !           628: 
        !           629:        * reload.c (find_reloads): Typo in calling push_replacement.
        !           630: 
        !           631:        * tm-ns32k.h (HARD_REGNO_MODE_OK): Failed to allow fp regs for SFmode.
        !           632: 
        !           633: Sun Apr 17 01:21:35 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           634: 
        !           635:        * tm-sequent.h (PRINT_OPERAND): Handle absolute integer memaddress.
        !           636: 
        !           637:        * ns32k.md: Add DImode push insns.  Add QImode and HImode push insns.
        !           638:        Supply missing statement in movsf.
        !           639: 
        !           640:        * dbxout.c (dbxout_type): Don't contin before 1st field of struct.
        !           641: 
        !           642:        * dbxout.c (dbx_continue): Use DBX_CONTIN_CHAR instead of backslash.
        !           643: 
        !           644:        * loop.c (scan_loop): Ov vax, the "loop-entry jump" can be a return,
        !           645:        in which case perhaps there is no label following it.
        !           646:        Detect phoniness of loop before looking for that label.
        !           647: 
        !           648:        * decl.c (init_decl_processing): Builtin fn names start with `__'.
        !           649: 
        !           650:        * typecheck.c (shorten_compare): Warn about constant result only in
        !           651:        cases like (char)x < 0x80, where old C compilers made it -0x80.
        !           652: 
        !           653:        * vax.md: All jbs/jbc/jlbs/jlbc patters with op0 in SImode
        !           654:        must reject mode-dependent memory addresses.
        !           655: 
        !           656:        * recog.c (mode_independent_operand): Test for general operand
        !           657:        that doesn't have a mode-dependent memory address.
        !           658: 
        !           659:        * varasm.c (assemble_function): ASM_DECLARE_FUNCTION_NAME, if def,
        !           660:        is now responsible for outputting the function name as a label.
        !           661: 
        !           662: Sat Apr 16 05:02:55 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           663: 
        !           664:        * cccp.c (do_xifdef): Warn about punctuation or other junk in argument.
        !           665:        Warn about no argument.  If pedantic, warn if arg starts with digit.
        !           666:        If traditional, ignore all after first non-idchar and never warn.
        !           667: 
        !           668: Thu Apr 14 01:12:59 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           669: 
        !           670:        * integrate.c (expand_inline_function): Typo for addressable parms.
        !           671: 
        !           672:        * cse.c (insert_regs): Copying half a DImode into half of another
        !           673:        does not make the two DImode regs equivalent.
        !           674: 
        !           675:        * recog.c (general_operand): Was failing to accept symbol_ref:SI
        !           676:        when MODE arg was VOIDmode.
        !           677: 
        !           678:        * expr.c (preexpand_calls): For RTL_EXPR, do nothing.
        !           679: 
        !           680:        * decl.c (start_enum, build_enumerator): Remember default for next one
        !           681:        as a tree node (so the high-half isn't lost in a negative one).
        !           682: 
        !           683:        * stor-layout.c (layout_{record,union}): Pay attn to initial value
        !           684:        of TYPE_ALIGN in computing final alignment.
        !           685:        (layout_union): Round size up to multiple of the alignment.
        !           686: 
        !           687:        * decl.c (finish_struct): Don't alter size after type is laid out.
        !           688:        Instead, set TYPE_ALIGN before layout_type.
        !           689: 
        !           690:        * reload1.c (choose_reload_targets): Introduce reg_has_output_reload.
        !           691:        If there are two separate reloads (one in and one out)
        !           692:        for the same (hard or pseudo) reg, always set reg_last_reload_reg
        !           693:        based on the output reload.
        !           694: 
        !           695: Wed Apr 13 21:26:16 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           696: 
        !           697:        * reload.c (find_reloads_address_1): Always barf if a "constant"
        !           698:        register is autoincremented.
        !           699: 
        !           700:        * parse.y (structsp): suspend_momentary before start_enum;
        !           701:        else some nodes made by start_enum might be momentary.
        !           702: 
        !           703:        * stmt.c (expand_start_case): New arg is nominal type for comparison
        !           704:        (which is the promoted type of the index expression).
        !           705:        (pushcase): Always convert VALUE to that nominal type
        !           706:        before validating it.
        !           707:        * parse.y (case stmt): Promote each case-value before pushcase.
        !           708:        * typecheck.c (c_expand_start_case): Promote the index-expr
        !           709:        to determine the nominal type, before get_narrower.
        !           710: 
        !           711: Wed Apr 13 12:43:08 1988  Chris Hanson  (cph at kleph)
        !           712: 
        !           713:        * tm-hp9k320.h: Define ASM_FORMAT_PRIVATE_NAME.  HPUX asm forbids
        !           714:        `.' in identifiers, so use `___' (there is some danger in this choice).
        !           715: 
        !           716: Tue Apr 12 23:26:48 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           717: 
        !           718:        * local-alloc.c (block_alloc): Make 1 extra slot in regs_live_at.
        !           719: 
        !           720:        * stmt.c (optimize_bit_field): Function moved from reload1.c.
        !           721:        When need to generate a SIGN_EXTEND or ZERO_EXTEND, make it a separate
        !           722:        insn and use gen_extend_insn to make it.
        !           723:        * optabs.c (gen_extend_insn): New fn, construct body of an insn
        !           724:        to extend Y and store in X.
        !           725: 
        !           726: Mon Apr 11 19:20:57 1988  Richard Stallman  (rms at rice-krispies.ai.mit.edu)
        !           727: 
        !           728:        * decl.c (finish_decl): Error if static var has variable size.
        !           729: 
        !           730:        * parse.y (yylex): Warn if int const is out of range.
        !           731: 
        !           732:        * parse.y: New keyword __alignof.
        !           733:        * typecheck.c (c_alignof): Given a type, return its alignment in bytes.
        !           734: 
        !           735:        * typecheck.c (c_sizeof{,_nowarn)): Don't return integer_one_node;
        !           736:        use build_int to make sure we get something with type `sizetype'.
        !           737: 
        !           738:        * Support variable-sized structures (containing var-sized arrays).
        !           739: 
        !           740:        * stmt.c (assign_parms): Handle parms whose size varies.
        !           741:        Use `memory_address' when constructing memrefs to args;
        !           742:        no need to set `invalid_stack_slot'.
        !           743:        Don't make a REG_EQUIV note for a scalar arg at variable offset.
        !           744:        * stor-layout.c (genop, build_int): No longer `static'.
        !           745: 
        !           746:        * stor-layout.c (convert_units): Optimize ceil (ceil(x,2)*2, 4) etc.
        !           747: 
        !           748:        * stmt.c (expand_decl): Don't abort if var-sized object has init.
        !           749:        Convert variable size from units of DECL_SIZE_UNIT to units of bytes.
        !           750: 
        !           751:        * expr.c (emit_push_insn): Arg ARGS_SO_FAR is now an rtx.
        !           752:        Pay attention to ARGS_ADDR even if machine has push insns.
        !           753:        (expand_call): Handle variable-sized arguments.
        !           754:        If have any such, push entire arg-block in advance.
        !           755:        Record each arg's offset during first loop and don't change args_size
        !           756:        during the actual pushing loop; this way the actual pushing loop
        !           757:        works regardless of arg-order if arg-block was pushed in advance.
        !           758:        (push_block): Copy SIZE to reg unless it's a reg or constant.
        !           759: 
        !           760:        * expmed.c (expand_divmod): If converting CEIL_DIV to FLOOR_DIV,
        !           761:        make new pseudo for incremented value, to help cse understand.
        !           762: 
        !           763: Sun Apr 10 00:07:45 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           764: 
        !           765:        * expr.c (emit_library_call): Two dumb bugs calling emit_call_1.
        !           766: 
        !           767:        * dbxout.c (dbxout_symbol): Handle case of (MEM (REG frameptr)).
        !           768: 
        !           769:        * cccp.c (skip_if_group): Ignore quote-chars if -traditional.
        !           770:        (rescan): If -traditional, don't output a space for a comment.
        !           771:        (handle_directive): If not -traditional, output a space for a comment.
        !           772: 
        !           773: Sat Apr  9 21:26:51 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           774: 
        !           775:        * decl.c (get_parm_types): `void' type is error, except as entire list.
        !           776:        * parse.y (parmlist_1): `void,...' is error.
        !           777: 
        !           778:        * typecheck.c (pointer_int_sum, pointer_diff):
        !           779:        Use an integer type with at least POINTER_SIZE bits.
        !           780:        * expr.c (expand_expr, ARRAY_REF): Likewise.
        !           781:        * tree.c (type_precision): Prec of a pointer is POINTER_SIZE.
        !           782:        (convert_to_pointer): Directly convert any int w/ width==POINTER_SIZE.
        !           783:        Other int types convert via an int of that width.
        !           784:        (convert_to_integer): Pointers convert via an int of that width.
        !           785: 
        !           786:        * decl.c (init_decl_processing): Use INT_TYPE_SIZE, if def,
        !           787:        to set width of `int' and `unsigned int'.
        !           788:        (make_index_type): Give new type the width of a long int.
        !           789: 
        !           790:        * tm-m68k.h: Add new -mshort which controls TARGET_SHORT.
        !           791:        * tm-m68k.h: Define INT_TYPE_SIZE depending on TARGET_SHORT.
        !           792: 
        !           793: Fri Apr  8 05:02:59 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           794: 
        !           795:        * typecheck.c (require_complete_type): Fix typo in detection of `void'.
        !           796:        (build_function_call): Fix backward test to allow `void' values.
        !           797: 
        !           798:        * dbxout.c (dbxout_tags): Output each tag once even if type is defined.
        !           799: 
        !           800:        * m68k.md (movstrictqi): Reject addr-reg always, for both operands.
        !           801: 
        !           802:        * tm-vax.h (STRUCTURE_SIZE_BOUNDARY): Make this always 8, for BSD.
        !           803:        * tm-ultrix.h: New file, overriding STRUCTURE_SIZE_BOUNDARY.
        !           804:        [This change has been taken out; tm-ultrix.h is now equivalent to
        !           805:        tm-vax.h.  I must have been confused when testing PCC.]
        !           806: 
        !           807:        * integrate.c (expand_inline_function): Don't let inline_target
        !           808:        be nonzero in BLKmode.
        !           809: 
        !           810:        * decl.c (grokdeclarator): Const array parm becomes ptr-to-const.
        !           811: 
        !           812: Thu Apr  7 05:02:41 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           813: 
        !           814:        * genoutput.c (bcopy, bzero): Renamed to mybcopy, mybzero
        !           815:        so variation in C library and config.h won't affect the results.
        !           816:        * genrecog.c (bzero): likewise.
        !           817:        * genextract.c (bcopy): Fn deleted; used only in a string constant. 
        !           818: 
        !           819:        * varasm.c (force_const_mem): Fix typo in arg decl.
        !           820: 
        !           821:        * toplev.c (compile_file): init_file with main_input_filename
        !           822:        so dbx output doesn't lack N_SOL symbols.
        !           823: 
        !           824:        * cccp.c (rescan) [CPLUSPLUS]: Put out // comments as // comments.
        !           825: 
        !           826: Wed Apr  6 14:06:38 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           827: 
        !           828:        * expr.c: Delete SLOW_ZERO_EXTEND conditionals added March 3.
        !           829:        Now that enums types can be unsigned, this isn't needed.
        !           830: 
        !           831:        * emit-rtl.c (emit_jump_insn): Handle SEQUENCEs.
        !           832: 
        !           833:        * genemit.c (gen_expand): Use emit_jump_insn, emit_label, emit_barrier
        !           834:        when the insn rtl requires it.
        !           835: 
        !           836:        * m68k.md (subsi3): Prefer to avoid reverse-subtraction alternative.
        !           837: 
        !           838:        * stmt.c (expand_end_case): Let CASE_DROPS_THROUGH control what to
        !           839:        emit after the table.
        !           840:        * tm-vax.h: Define CASE_DROPS_THROUGH.
        !           841: 
        !           842: Tue Apr  5 15:47:10 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           843: 
        !           844:        * genemit.c (gen_exp): Handle vectors within exprs.
        !           845: 
        !           846:        * stmt.c (expand_end_case): Pass 5th arg (default_label) to gen_casesi.
        !           847:        * m68k.md: Define casesi insn rather than tablejump insn.
        !           848: 
        !           849:        * cccp.c (skip_if_group): For validate_else, pass BP (end of cmd name).
        !           850:        Don't call validate_else if do_else or do_endif will detect error.
        !           851: 
        !           852:        * Bug: inline fcns can refer to the return reg with a strict_low_part
        !           853:        which confuses expand_inline_function.  Fix is to change return reg
        !           854:        into inline_target *everywhere* except in or right after a call.
        !           855:        * integrate.c (copy_rtx_and_substitute): Delete special case for SET.
        !           856:        Replace return-value hard regs with INLINE_TARGET in all contexts.
        !           857:        (expand_inline_function): special handling for insn after a CALL_INSN
        !           858:        if it copies the function value out.
        !           859:        Allow notes and stack adjust insns to intervene
        !           860:        between the CALL_INSN and the value-copy.
        !           861: 
        !           862:        * expr.c (emit_call_1): New name for gen_call_1.
        !           863: 
        !           864:        * Bug: ({...}) insns were in wrong place for a subexpression
        !           865:        after a sequence point, as in x ? y : ({...}).
        !           866:        * tree.def: New tree-code RTL_EXPR holds a sequence.
        !           867:        * expr.c (expand_expr): Handle RTL_EXPR by emitting the sequence.
        !           868:        * stmt.c (expand_{start,end}_stmt_expr): Use emit_to_sequence
        !           869:        to make a sequence from everything within the ({...}).
        !           870:        (expand_{start,end,emit}_delayed_expr): Delete these functions.
        !           871:        * parse.y (`for'-statements): Don't call them; nothing special needed.
        !           872: 
        !           873:        * parse.y (yylex): Handle syntax L"..." and L'...'
        !           874:        (combine_strings): Handle wide strings being combined.
        !           875:        * typecheck.c (digest_init): Reject wide string as init for char array.
        !           876:        Allow it for an int array, but don't allow a narrow string.
        !           877:        * decl.c (init_decl_processing): New var int_array_type_node.
        !           878: 
        !           879:        * parse.y: Define keyword `noalias'.
        !           880:        * parse.h: Define RID_NOALIAS.
        !           881: 
        !           882:        * typecheck.c (compparms): Not all parmlists match an empty one;
        !           883:        call `compparms1' to filter them.
        !           884: 
        !           885:        * decl.c (groktypename): Remove special case for `void' as parameter.
        !           886:        (get_parm_types): Special case for list of one decl with type void.
        !           887: 
        !           888:        * decl.c (build_enumerator): Give enum constants the type `int'.
        !           889:        Variable `current_enum_type' eliminated.
        !           890:        (finish_enum): No need to repeat `fixup_unsigned_type'
        !           891:        since the precision has not changed.
        !           892:        * stor-layout.c (layout_type): Allow enum types to be unsigned.
        !           893: 
        !           894:        * emit-rtl.c (unshare_all_rtl): Unshare contents of all reg-notes.
        !           895: 
        !           896:        * parse.y (check_newline): filename is optional in #-lines.
        !           897: 
        !           898: Mon Apr  4 14:36:54 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !           899: 
        !           900:        * typecheck.c (shorten_compare): When data type determines the value,
        !           901:        eval the nonconstant arg anyway if it has side effects.
        !           902:        (build_conditional_expr): When merging `foo *' with `void *',
        !           903:        also allow `const void *'.  Result type has merged set of qualifiers.
        !           904:        (qualify_type): Merge qualifiers of two types.
        !           905: 
        !           906:        * decl.c (get_parm_types): Store any tags defined in parmlist
        !           907:        into `last_function_parm_types'.
        !           908:        (store_parm_decls): Add those tags into the current binding level.
        !           909: 
        !           910:        * parse.y (parmlist, parmlist_or_identifier): Pass 0 to pushlevel;
        !           911:        no binding levels in C should be transparent to tags.
        !           912: 
        !           913:        * 3b1 support:
        !           914:        * tm-3b1.h: New file.
        !           915: 
        !           916:        * m68k.md: Add HPUX_ASM conditionals for shift-by-24-and-compare.
        !           917:        In one of the dbra patterns, a HPUX_ASM conditional was backwards.
        !           918:        (movhi) [SGS_3B1]: Define the LI... label as in MIT syntax.
        !           919:        (addsi3) [SGS]: Syntax for base-displacement differs from MOTOROLA.
        !           920:        (subsi3) [SGS]: likewise.
        !           921:        (tablejump) [ASM_OUTPUT_CASE_LABEL]: Use 6, not 2, as displacement.
        !           922:        This assumes ASM_OUTPUT_CASE_LABEL on 68k is used for a `swbeg'.
        !           923: 
        !           924:        * final.c (final): Use ASM_OUTPUT_CASE_LABEL (if defined) to output
        !           925:        any CODE_LABEL followed by an ADDR_VEC or ADDR_DIFF_VEC.
        !           926:        It has 4 args; 4th is the insn which is the ADDR_VEC or ADDR_DIFF_VEC.
        !           927: 
        !           928:        * tm-*.h for 68000 (PRINT_OPERAND_ADDRESS): For unscaled indexing in
        !           929:        fetch from a branch table, use L and LI symbols as in the scaled case.
        !           930: 
        !           931:        * cccp.c: If SCCS_DIRECTIVE, define #sccs as no-op.
        !           932: 
        !           933:        * integrate.c (output_inline_function): Real start of function
        !           934:        is FIRST_PARM_INSN, not FIRST_FUNCTION_INSN.
        !           935: 
        !           936:        * tree.c (build_string): String contents must be saveable (for
        !           937:        inline fcn).
        !           938: 
        !           939:        * cse.c (cse_insn): Don't forget to set dest_hash_code when dest
        !           940:        is a stack slot (and so its address is not being optimized).
        !           941: 
        !           942:        * emit-rtl.c (restore_reg_data_1): reg_rtx_no must be 1+ largest REGNO.
        !           943: 
        !           944:        * m68k.md (non-SImode bit-field insns): Change constraint to "o,d"
        !           945:        so a nonoffsetable memref is handled by reloading its address
        !           946:        but a register can still be handled.
        !           947: 
        !           948:        * toplev.c (main): Execute OVERRIDE_OPTIONS, if it's defined.
        !           949: 
        !           950: Sat Apr  2 00:55:21 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !           951: 
        !           952:        * expr.c (convert_move): Handle a SUBREG in direct truncation case.
        !           953: 
        !           954:        * cse.c (lookup_for_remove): Don't test machine mode of registers:
        !           955:        Storing in (REG:SI 0) invalidates (REG:DF 0).
        !           956: 
        !           957:        * decl.c (pushlevel): New arg, nonzero means this level is for
        !           958:        variables only, not for tags.  All calls changed.
        !           959:        (lookup_tag): Even if THIS_LEVEL_ONLY, skip variables-only levels.
        !           960:        (pushtag): Define it in the first non-variables-only level.
        !           961: 
        !           962:        * dbxout.c (dbxout_type): Undo Mar 29 change, in the DBX_NO_XREFS case.
        !           963:        So now each struct or union will contain only nameless cross-refs
        !           964:        to any others it uses.  The prior change is still in effect when
        !           965:        DBX_NO_XREFS is not defined.
        !           966: 
        !           967:        * Implement variable array bounds for parameters.
        !           968:        * decl.c (poplevel): Don't crash if DECL_NAME gives 0.
        !           969:        * typecheck.c (comptypes): A variable array bound matches anything.
        !           970:        * parse.y (parmlist): Call pushlevel, then pushdecl each parm as it
        !           971:        is parsed; then poplevel after using get_parm_types to extract the
        !           972:        results of the parmlist.
        !           973:        * decl.c (get_parm_types): New function; reverse the current decls,
        !           974:        put them in last_function_parms, and return a list of their types.
        !           975:        (grokparms): Arg is now an idlist or a typelist.  Do nothing if latter.
        !           976:        (push_parm_decl): New function, like {start,finish}_decl combined
        !           977:        for a parm in a parmlist.
        !           978: 
        !           979:        * dbxout.c (dbxout_symbol): Ignore sym if its DECL_RTL is 0.
        !           980: 
        !           981:        * symout.c (symout_block_symbols): Ignore sym if type is error_mark.
        !           982: 
        !           983: Fri Apr  1 11:41:21 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !           984: 
        !           985:        * expr.c (prepare_call_address): New function; given two rtx's
        !           986:        for function and context, copy the context to the right hard reg,
        !           987:        put the function address in the right place and return an rtx for it.
        !           988:        (gen_call_1): No longer do those things.  Delete args CONTEXT, PROTECT.
        !           989:        (emit_library_call, expand_call): Call `prepare_call_address'.
        !           990:        In between that and `gen_call_1', USE the parm registers.
        !           991: 
        !           992:        * tm-hp9k320.h (ASM_OUTPUT_*): Flush uses of output_arith_constant.
        !           993: 
        !           994:        * varasm.c (assemble_variable): Use ASM_FORMAT_PRIVATE_NAME
        !           995:        to make the name for a local static variable.
        !           996:        * tm-m68k.h, tm-vax.h, tm-ns32k.h, tm-spur.h:
        !           997:        Define ASM_FORMAT_PRIVATE_NAME.  Use `.', not `$', to separate.
        !           998: 
        !           999:        * tm-m68k.h, tm-ns32k.h (FIX_FRAME_POINTER_ADDRESS):
        !          1000:        To refer to stack ptr, use stack_pointer_rtx, not a copy.
        !          1001: 
        !          1002:        * tree.c (build_real_from_string): Function deleted.
        !          1003:        * parse.y (yylex): Use build_real and atof.
        !          1004: 
        !          1005:        * parse.y: Allow string concatenation in arg of asm.
        !          1006: 
        !          1007:        * parse.y (yylex): Always allow `$' in ident, but warn if pedantic.
        !          1008:        * tm-vms.h: Delete DOLLARS_IN_IDENTIFIERS (no longer tested).
        !          1009: 
        !          1010:        * cccp.c (rescan, do_define, initialize_random_junk):
        !          1011:        Always allow `$', but warn if pedantic.
        !          1012:        (main): If -t, set `traditional'.
        !          1013:        (collect_expansion): If `traditional', no special handling for quotes
        !          1014:        and no whitespace added at end of macro definition.
        !          1015: 
        !          1016:        * expr.c (compare, compare1): Last arg to compare_constants
        !          1017:        must be a size in bits.
        !          1018: 
        !          1019: Thu Mar 31 00:31:52 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1020: 
        !          1021:        * expmed.c (expand_mult, expand_divmod, extract_fixed_bit_field):
        !          1022:        Reject function return register as target if may need to read it.
        !          1023:        (Reading the return register in an inline function doesn't work.)
        !          1024: 
        !          1025:        * decl.c (start_function): Delete extra arg to `error'.
        !          1026: 
        !          1027:        * emit-rtl.c (last_parm_insn): Delete this unused var.
        !          1028: 
        !          1029:        * make-cc1.com: New version from Kashtan.
        !          1030: 
        !          1031:        * integrate.c (expand_inline_function): Always set up an INLINE_TARGET
        !          1032:        for a function that returns a nonvoid nonBLK value.
        !          1033:        Since `pushlevel' and `poplevel' are called, must also call
        !          1034:        `expand_{start,end}_bindings' to make a pair of NOTEs.
        !          1035:        Let them handle USEs at end of scope of formal parameter copies.
        !          1036: 
        !          1037:        * integrate.c (expand_inline_function): In a new-style CALL_INSN,
        !          1038:        don't change the result reg into INLINE_TARGET.  Also,
        !          1039:        generate a move insn after the call only if INLINE_TARGET is non-0.
        !          1040: 
        !          1041:        * integrate.c (copy_decl_tree): Don't crash if DECL_RTL is 0.
        !          1042: 
        !          1043:        * integrate.c (copy_for_inline): Don't treat `return' rtx's specially.
        !          1044: 
        !          1045:        * stmt.c (expand_{start,end,emit}_delayed_expr):
        !          1046:        New fns to handle ({...})'s in expressions output not where parsed
        !          1047:        (such as third expression in a `for' statement).
        !          1048:        * parse.y: Call them to handle third expression in a `for'.
        !          1049: 
        !          1050:        * decl.c (duplicate_decls): Result is `inline' if either OLD or NEW is.
        !          1051: 
        !          1052:        * emit-rtl.c (emit_note): Return the note, or 0 if none.
        !          1053:        * stmt.c (expand_start_bindings): Use emit_note's value.
        !          1054: 
        !          1055: Wed Mar 30 12:48:22 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1056: 
        !          1057:        * obstack.c (_obstack_begin): If ALIGNMENT is 0, use default.
        !          1058:        Compute default for the alignment of a `double'.
        !          1059:        * obstack.h (obstack_{begin,init}): Pass 0 for the alignment.
        !          1060: 
        !          1061:        * flow.c (mark_used_regs): Discard multiple SUBREGs, STRICT_LOW_PARTs.
        !          1062: 
        !          1063:        ** Call insns that return values are now represented as
        !          1064:        (set (reg ...) (call ...)), not just (call ...).
        !          1065: 
        !          1066:        * *.md: Define a "call_value" insn pattern.
        !          1067: 
        !          1068:        * tm-m68k.h, tm-vax.h, tm-ns32k.h: (NOTICE_UPDATE_CC):
        !          1069:        These insns invalidate the CC.
        !          1070: 
        !          1071:        * local-alloc.c (combine_regs): #if 0 special treatment of
        !          1072:        function value hard reg.
        !          1073:        (wipe_dead_reg): If hard reg, call reg_is_born so that the death
        !          1074:        will not be ignored.
        !          1075:        (reg_is_set): For reg that dies in this insn, mark it dead from now on
        !          1076:        and post_mark it live after this insn only.
        !          1077: 
        !          1078:        * combine.c (try_combine): Don't allow a call insn as I1 or I2.
        !          1079: 
        !          1080:        * loop.c (count_loop_regs_set): Move CALL_INSN into a separate
        !          1081:        clause.  When finding regs that are function addresses, handle
        !          1082:        both old and new format call insns.
        !          1083: 
        !          1084:        * flow.c (insn_dead_p): A SET that contains a CALL can't be dead.
        !          1085:        (volatile_refs_p): Any CALL constitutes a volatile ref.
        !          1086:        (mark_used_regs): If setting a reg from a volatile ref,
        !          1087:        treat it like setting a reg whose value will be used.
        !          1088: 
        !          1089:        * expr.c (gen_call_1): New arg VALREG if nonzero means generate
        !          1090:        a call_value insn which stores in VALREG.
        !          1091:        (expand_call): Use `hard_function_value' to make the VALREG arg
        !          1092:        unless expression has type `void'.
        !          1093: 
        !          1094:        * expr.c (emit_library_call): New 2nd arg OUTMODE is mode of result.
        !          1095:        (So can give gen_call_1 the proper value-register.)
        !          1096:        All callers (here and optabs.c) pass this arg.
        !          1097: 
        !          1098:        * cse.c (canon_hash): Consider all CALL rtx's volatile.
        !          1099: 
        !          1100:        ** end of change in representation of call insns.
        !          1101: 
        !          1102:        * stmt.c (expand_asm_operands): Replace complex lvalues with
        !          1103:        SAVE_EXPRs here
        !          1104:        * typecheck.c (c_expand_asm_operands):  rather than here.
        !          1105: 
        !          1106:        * typecheck.c (pointer_diff): Fix typo preventing use of FLOOR_DIV_EXPR
        !          1107:        when dividing by power of 2.
        !          1108:        (build_c_cast): Flush unused locals.
        !          1109:        (store_init_value): likewise.
        !          1110:        (process_init_constructor): Delete unused 4th arg `for_static'.
        !          1111: 
        !          1112:        * toplev.c (fatal_io_error): Arg to fprintf was missing.
        !          1113: 
        !          1114:        * tm-m68k.h (LEGITIMIZE_ADDRESS): Flush extra arg to `emit_move_insn'.
        !          1115: 
        !          1116:        * decl.c: Delete some unused local vars.
        !          1117: 
        !          1118:        * stor-layout.c (layout_decl): `packed_size' now unsigned.
        !          1119: 
        !          1120: Tue Mar 29 14:47:07 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1121: 
        !          1122:        * Version 1.19 released.
        !          1123: 
        !          1124:        * loop.c (may_trap_p): Nonzero if X is a division that might trap.
        !          1125:        (scan_loop): If insn might trap, move only if loop always executes it.
        !          1126: 
        !          1127:        * dbxout.c (dbxout_type): Never output a cross-ref for
        !          1128:        a type whose definition is known.  Sun dbx won't accept them.
        !          1129: 
        !          1130: Mon Mar 28 12:34:46 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1131: 
        !          1132:        * tm-vms.h (TARGET_DEFAULT): Default is PCC alignment.
        !          1133:        The VMS compile driver controls the real default.
        !          1134: 
        !          1135:        * typecheck.c (c_expand_return): Don't ignore return value
        !          1136:        when its type is void.
        !          1137: 
        !          1138:        * final.c (final): Forget the condition codes after an `asm'.
        !          1139: 
        !          1140:        * typecheck.c (build_binary_op_nodefault): Warn about ptr < 0
        !          1141:        even if not pedantic, but not if traditional.
        !          1142: 
        !          1143:        * typecheck.c (convert_for_assignment): Don't warn about
        !          1144:        pointers volatile * vs nonvolatile * if -fvolatile specified.
        !          1145: 
        !          1146:        * decl.c (store_parm_decls): Among the old-style parm decls
        !          1147:        there can legitiately be other decls!  For example, if a parm
        !          1148:        is declared `enum {foo, bar} x;', there are decls for `foo' and `bar'.
        !          1149:        Don't let anything but a PARM_DECL match a parm name;
        !          1150:        pass all the other decls through into the lexical context.
        !          1151: 
        !          1152:        * jump.c (jump_optimize): When deleting stack adjusts before a
        !          1153:        jump-to-return, don't be fooled by intervening NOTEs.
        !          1154: 
        !          1155:        * tm-sequent.h (PRINT_OPERAND): Output (MEM (MEM (REG))) properly.
        !          1156:        * output-ns32k.c (print_operand_address): Output (MEM (REG))
        !          1157:        properly; output stack-pointer as `tos'.
        !          1158: 
        !          1159:        * flow.c (find_use_as_address): Reject uses within operand 0
        !          1160:        of a ZERO_EXTRACT or SIGN_EXTRACT reference.  It's hard to reload
        !          1161:        an autoincrement inside these because they can refer to multiple bytes.
        !          1162: 
        !          1163:        * reload.c (find_reloads): `o' in constraint means any memref
        !          1164:        (except auto-increment) is acceptable with reloading.
        !          1165:        Braino: Clear BADOP, not BAD.
        !          1166: 
        !          1167:        * reload.c (push_reloads): Use rtx_equal_p (via macro MATCHES)
        !          1168:        when considering reuse of an old reload.  Otherwise equal values
        !          1169:        may get reloaded into different registers, and two MEMs that
        !          1170:        originally matched may fail to match once reloaded.
        !          1171: 
        !          1172:        * m68k.md (sign_extract and zero_extract insns):
        !          1173:        If operand 0 is QI or HImode, don't allow register--only `o'
        !          1174:        (except in some bftst patterns where bitpos is < 8).
        !          1175:        And change `m' to `o' in all these patterns.
        !          1176: 
        !          1177: Sun Mar 27 15:32:54 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1178: 
        !          1179:        * expr.c (expand_expr, case CONSTRUCTOR):
        !          1180:        Not all aggregates are BLKmode; use the type's mode.
        !          1181: 
        !          1182:        * gcc.c: Pass -y* to ld.
        !          1183: 
        !          1184:        * cse.c (struct hash): New member `equivalence_only'.
        !          1185:        (insert): Initialize it.
        !          1186:        (cse_insn): Set it to 1 when src_eqv is inserted.
        !          1187:        When finding cheapest equivalent of something,
        !          1188:        skip elts that are marked with `equivalence_only'.
        !          1189: 
        !          1190:        * decl.c (duplicate_decls): Don't call `layout_type'
        !          1191:        if the type is `error_mark_node'.
        !          1192: 
        !          1193:        * decl.c (implicitly_declare): If decl will be file-scope,
        !          1194:        make sure it's a permanent node, and its associated data too.
        !          1195: 
        !          1196: Sat Mar 26 15:48:50 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1197: 
        !          1198:        * flow.c (insn_dead_p, mark_used_regs): Storing a reg via a
        !          1199:        ZERO_EXTRACT or SIGN_EXTRACT is dead if the reg isn't needed afterward.
        !          1200: 
        !          1201:        * stmt.c (expand_start_function): Set current_function_name
        !          1202:        to the name of this function.
        !          1203:        * tm-vms.h (MAYBE_VMS_FUNCTION_PROLOGUE): Use current_function_name.
        !          1204: 
        !          1205:        * expr.c (expand_increment): A SUBREG in op0 can also a be a copy.
        !          1206: 
        !          1207:        * ns32k.md: Correct range of args for `adjspb' insn.
        !          1208:        Use `adjspw' when appropriate.
        !          1209:        New pattern for `lprd' insn.
        !          1210:        Change some `const_int' predicates to GET_CODE tests.
        !          1211: 
        !          1212:        * expr.c (expand_call): Eval function before copying args to hard regs.
        !          1213: 
        !          1214:        * tree.c (make_node, copy_node): Don't get length of a REAL_CST
        !          1215:        from tree_code_length.
        !          1216: 
        !          1217:        * expmed.c (extract_fixed_bit_field): In memory-word case, abort
        !          1218:        if tm.h parms say word could fail to be well-aligned.
        !          1219:        * tm-ns32k.h: Define STRUCTURE_SIZE_BOUNDARY so they will be aligned.
        !          1220:        * tm-vax.h: Define STRUCTURE_SIZE_BOUNDARY since Unix CC seems to.
        !          1221: 
        !          1222:        * tm-vms.h (CPP_PREDEFINES): Predefine __GNU__ and __GNUC__.
        !          1223: 
        !          1224: Fri Mar 25 13:23:27 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1225: 
        !          1226:        * gcc.c (main): Handle SIGHUP, SIGTERM.
        !          1227: 
        !          1228:        * expmed.c (expand_bit_and): Don't clobber OP1 when trying andcb.
        !          1229: 
        !          1230: Thu Mar 24 21:59:09 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1231: 
        !          1232:        * stmt.c (assign_parms): Get size of BLKmode local from the type,
        !          1233:        not the mode.
        !          1234:        (expand_function_start): Init frame_offset before calling assign_parms.
        !          1235: 
        !          1236: Wed Mar 23 23:50:37 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1237: 
        !          1238:        * expr.c (emit_push_insn): When making a move insn,
        !          1239:        go via emit_move_insn; else fails to put constants into memory.
        !          1240: 
        !          1241: Tue Mar 22 15:45:10 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1242: 
        !          1243:        * expr.c (expand_increment): Flush special case for register_operand;
        !          1244:        actually call the predicate whatever it is.
        !          1245: 
        !          1246:        * genemit.c (gen_expand): Make `operands' a local variable,
        !          1247:        not a global static one, in the `gen_...' function.
        !          1248:        Avoids lossage when one `gen_...' fcn calls another indirectly.
        !          1249: 
        !          1250:        * genoutput.c (output_epilogue): Don't give printf a null string.
        !          1251: 
        !          1252: Mon Mar 21 15:41:42 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1253: 
        !          1254:        * expmed.c (store_bit_field) [HAVE_insv]:
        !          1255:        Force VALUE1, not VALUE, into a register.
        !          1256: 
        !          1257:        * expmed.c (store_fixed_bit_field): Width of mask for clearing
        !          1258:        the bit-field depends on mode of OP0.
        !          1259: 
        !          1260:        * ns32k.md (branch and store-flag insns):
        !          1261:        Test cc_prev_status, not cc_status.
        !          1262: 
        !          1263:        * expmed.c (extract_bit_field): Delete unused var `omode'.
        !          1264: 
        !          1265:        * dbxout.c (dbxout_type, dbxout_tag): Use the main variant
        !          1266:        of the specified type.
        !          1267: 
        !          1268:        * reload.c (find_reloads): When an alternative succeeds without reload,
        !          1269:        initialize goal_alternative_matches from this_alternative_matches.
        !          1270: 
        !          1271: Sun Mar 20 17:58:00 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1272: 
        !          1273:        * tm-sun*.h: Don't predefine `m68k'; Sun's compiler does not.
        !          1274: 
        !          1275: Fri Mar 18 13:48:29 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1276: 
        !          1277:        * reload.c (find_reloads): Set up goal_alternative_matches
        !          1278:        *after* the label `finish'.
        !          1279: 
        !          1280:        * stmt.c (assign_parms): GET_MODE_SIZE needs a mode, not an rtx.
        !          1281: 
        !          1282:        * recog.c (constrain_operands): Set global var `which_alternative'
        !          1283:        to indicate which of the alternatives this insn matches.
        !          1284: 
        !          1285:        * typecheck.c (commontype): long int vs unsigned int
        !          1286:        gives long unsigned, if long and int are the same width.
        !          1287: 
        !          1288: Thu Mar 17 15:39:45 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1289: 
        !          1290:        * emit-rtl.c, tree.c: include local version of varargs.h.
        !          1291: 
        !          1292:        * decl.c (start_function): Clear TREE_EXTERNAL and set TREE_STATIC
        !          1293:        here rather than in finish_function.  Affects the case of
        !          1294:           `extern foo ();  static foo (a) {...}'
        !          1295: 
        !          1296:        * gcc.c: Handle -fnostdinc and -fnostdlib switches in specs.
        !          1297: 
        !          1298:        * cccp.c (main): Handle -fnostdinc: don't put default dirs
        !          1299:        on the chain to be searched.
        !          1300: 
        !          1301:        * cccp.c (error, warning, error_with_line): No longer print
        !          1302:        charpos within file; lineno is enough.
        !          1303: 
        !          1304: Wed Mar 16 16:56:36 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1305: 
        !          1306:        * expmed.c (expand_inc, expand_dec): Handy new subroutines
        !          1307:        to generate x+=y or x-=y, given x and y as rtl.
        !          1308:        * expmed.c (expand_divmod): Use them instead of gen_{add2,sub2}_insn.
        !          1309: 
        !          1310:        * expr.c (emit_move_insn): Return the move insn emitted.
        !          1311:        Eliminate the code here to move a DImode or DFmode by pieces.
        !          1312: 
        !          1313:        * emit-rtl.c (emit_insn): Return-value was wrong if emit_to_sequence;
        !          1314:        cannot use `last_insn' in that case.
        !          1315: 
        !          1316:        * regclass.c, stupid.c, local-alloc.c, global-alloc.c:
        !          1317:        Some vars of type HARD_REG_SET should be `register' only
        !          1318:        if HARD_REG_SET is a macro (ie a scalar).
        !          1319: 
        !          1320:        * expr.c (move_block_from_reg): New function, converse of
        !          1321:        move_block_from_reg.
        !          1322:        * stmt.c (assign_parms): If a BLKmode arrives in regs,
        !          1323:        copy to a stack slot using move_block_from_reg.
        !          1324: 
        !          1325: Tue Mar 15 17:33:22 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1326: 
        !          1327:        * regclass.c (regclass): Don't convert to two-operand insns
        !          1328:        unless optimizing.
        !          1329: 
        !          1330:        * varasm.c (decode_rtx_const, const_hash_rtx): Fix typos.
        !          1331: 
        !          1332:        * stmt.c (fixup_var_1): Don't alter insn moving VAR to or from
        !          1333:        a subreg of a register.
        !          1334: 
        !          1335:        * cse.c (fold_rtx): Don't fold if result is not LEGITIMATE_CONSTANT_P.
        !          1336:        Construct all results in new local variable NEW; then test that
        !          1337:        and decide whether to return it or the original rtx.
        !          1338: 
        !          1339:        * cse.c (cse_insn): When SRC_EQV is non-0 but set[0] has been
        !          1340:        cleared, don't insert SRC_EQV in hash table.
        !          1341: 
        !          1342:        * All insns emitted by a define_expand become part of the SEQUENCE:
        !          1343:        * SEQUENCE now contains a vector of insns, not of bodies.
        !          1344:        * insn-emit.c (add_insn): If `emit_to_sequence' nonzero, add the
        !          1345:        insn to a separate chain, `sequence_first_insn'.
        !          1346:        (gen_sequence): Take everything on that chain and make a SEQUENCE.
        !          1347:        (emit_insn): Handle SEQUENCE differently since elts are now insns.
        !          1348:        (emit_insn_{before,after}): Handle SEQUENCE.
        !          1349:        (classify_insn): #if 0.
        !          1350:        * genemit.c (gen_expand): emit all the insns, then call gen_sequence
        !          1351:        to make the return value.
        !          1352:        Define two macros DONE and FAIL for use in a DEFINE_EXPAND:
        !          1353:        Use DONE to inhibit emission of the pattern of the DEFINE_EXPAND.
        !          1354:        Use FAIL to make the gen_... function return 0.
        !          1355: 
        !          1356: Mon Mar 14 12:47:28 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1357: 
        !          1358:        * expr.c (expand_expr): Extend the don't-sign-extend-enums hack
        !          1359:        to COMPONENT_REF.  (See 3 March.)
        !          1360: 
        !          1361:        * tm-*.h (FUNCTION_ARG, etc.) New argument NAMED
        !          1362:        is nonzero for a named arg, zero for an anonymous extra arg.
        !          1363:        * expr.c (expand_call): Pass 1 for NAMED if appropriate.
        !          1364:        * expr.c (emit_library_call): Pass 1 for NAMED.
        !          1365:        * stmt.c (assign_parms): Pass 1 for NAMED.
        !          1366: 
        !          1367:        * cccp.c: Test __GNUC__, not __GNU__.
        !          1368: 
        !          1369:        * integrate.c (copy_and_substitute_rtx):
        !          1370:        Replacing a MEM parm with the parm value, convert mode if mismatch.
        !          1371:        Always use VOIDmode when generating SETs.
        !          1372:        Take heed of FIRST_PARM_OFFSET and distinguish arg-pointer
        !          1373:        from frame-pointer when they are different.
        !          1374:        (expand_inline_function): Handle (RETURN) insns, by creating a
        !          1375:        return_label which is output after the integrated code.
        !          1376: 
        !          1377:        * parse.y (yylex): Condition for ignoring `inline' was backwards.
        !          1378: 
        !          1379:        * flow.c (mark_used_regs): Ignore STRICT_LOW_PART, so that
        !          1380:        an insn that sets STRICT_LOW_PART (and its source values) may be dead.
        !          1381:        (propagate_block): Always pass 1 for strict_low_ok to insn_dead_p.
        !          1382: 
        !          1383:        * optabs.c (emit_unop_insn): Don't make a REG_RETVAL note.
        !          1384:        Change above deletes dead STRICT_LOW_PART stores without one.
        !          1385: 
        !          1386:        * optabs.c (expand_binop, expand_unop): If the library address
        !          1387:        is to be put in a pseudoreg, do it here, and make the REG_RETVAL
        !          1388:        note point after that.
        !          1389: 
        !          1390:        * expr.c (emit_library_call): Never defer stack-pops.
        !          1391:        Deletion of the library call by flow.c loses if they are deferred.
        !          1392: 
        !          1393:        * cse.c (cse_insn): Handling of 68k's zero-extend was broken:
        !          1394:        it made the actual source and the REG_EQUAL source equivalent.
        !          1395:        * If dest is a STRICT_LOW_PART, ignore the actual source and use
        !          1396:        the REG_EQUAL source in its place.  src_eqv's mode may be different
        !          1397:        from src's, so use proper mode in lookups or inserts for src_eqv.
        !          1398:        * Don't forget to set src_eqv_elt if src_eqv already has an elt.
        !          1399:        * On use_related_value for src_eqv, use src_eqv_elt.
        !          1400: 
        !          1401:        * toplev.c (main_input_filename): Name of file mentioned in first
        !          1402:        #-line in the input.
        !          1403:        (compile_file): Pass it to dbxout_init as 2nd arg.
        !          1404:        * dbxout.c (dbxout_init): Use 2nd arg to make the N_SO symbol.
        !          1405:        * parse.y (check_newline): Store main_input_filename.
        !          1406: 
        !          1407:        * expr.c (move_block_to_reg): New function, copies a MEM:BLK
        !          1408:        to consecutive registers.
        !          1409:        (use_regs): New function to emit a USE for each reg in a series.
        !          1410:        (expand_call): Use the two new functions when a precomputed BLKmode
        !          1411:        arg is passed entirely in regs.
        !          1412:        (emit_push_insn): Use move_block_to_reg when PARTIAL > 0.
        !          1413:        Also, don't subtract USED from SIZE twice.
        !          1414:        Use plus_constant to add ARGS_SO_FAR so can use indexing on stack ptr.
        !          1415: 
        !          1416:        * varasm.c (assemble_integer_zero): Use rtx 0, not tree 0,
        !          1417:        to go with prev change in ASM_OUTPUT_INT.
        !          1418: 
        !          1419: Sun Mar 13 01:16:17 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1420: 
        !          1421:        * varasm.c (const_hash, compare_constant_1, record_constant_1):
        !          1422:        Handle NOP_EXPR and CONVERT_EXPR in constant expressions.
        !          1423: 
        !          1424:        * optabs.c (expand_binop, expand_unop): When widening operands,
        !          1425:        those with VOIDmode (like CONST_INT) may be left alone.
        !          1426: 
        !          1427: Sat Mar 12 01:09:24 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1428: 
        !          1429:        * varasm.c (assemble_variable): When making a .comm or .lcomm,
        !          1430:        round size up to multiple of BIGGEST_ALIGNMENT.
        !          1431: 
        !          1432:        * obstack.c (_obstack_newchunk): Eliminate fencepost causing copying
        !          1433:        to access the word past the end of the existing object.
        !          1434: 
        !          1435:        * tm-vax.h, tm-ns32k.h: Define {INIT_,}CUMULATIVE_ARGS
        !          1436:        and upgrade FUNCTION_ARGS for new calling convention.
        !          1437: 
        !          1438:        * gcc.c: If -O, define __OPTIMIZE__.
        !          1439:        (do_spec_1): %c now scans SIGNED_CHAR_SPEC: define __CHAR_UNSIGNED__
        !          1440:        when appropriate whether or not it is the default.
        !          1441: 
        !          1442: Fri Mar 11 16:49:25 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1443: 
        !          1444:        * parse.y: Define YYDEBUG.
        !          1445: 
        !          1446:        * rtl.c (rtx_unstable_p): New function, same as old rtx_varies_p.
        !          1447:        * explow.c (stabilize): Use rtx_unstable_p.
        !          1448:        * rtl.c (rtx_varies_p): Ignore `unchanging' (undoing previous change
        !          1449:        in this function) because `unchanging' doesn't enable cse to compare
        !          1450:        the value with any particular constant value.
        !          1451:        * rtl.c (insn_store_addr_varies_p): Delete, since not used.
        !          1452: 
        !          1453:        * hard-reg-set.h (COPY_HARD_REG_SET, etc.) non-scalar case:
        !          1454:        Rename and rearrange temp variables to avoid name conflicts with args.
        !          1455: 
        !          1456:        * regclass.c (reg_class_record): Don't smash class to GENERAL_REGS
        !          1457:        and don't exit prematurely, when `r' or `g' is seen.  Must merge
        !          1458:        GENERAL_REGS with previously determined desired class.
        !          1459: 
        !          1460:        * expr.c (expand_call) [no PUSH_ROUNDING]: When pushing the arg
        !          1461:        block, try to reuse some of the pending_stack_adjust.
        !          1462: 
        !          1463:        * cse.c: qty_const can now hold values (PLUS frame_pointer integer).
        !          1464:        Effect is that storing into a structure doesn't invalidate
        !          1465:        mem refs to scalar stack variables via addresses in registers.
        !          1466:        (insert): Load such values into qty_const, like true constants.
        !          1467:        (fold_rtx): Ignore qty_const if it isn't really a constant.
        !          1468: 
        !          1469:        * expr.c (expand_expr) VAR_DECL: Copy DECL_RTL before calling
        !          1470:        change_address, so it isn't permanently clobbered.
        !          1471: 
        !          1472:        * stmt.c (fixup_var_refs_1): Make sure the stack slot address
        !          1473:        is valid by calling fixup_stack_1 each time it is substituted.
        !          1474: 
        !          1475:        * stmt.c (fixup_stack_1): Return the altered rtx.
        !          1476:        If it's a MEM in the stack, return a copy of it.
        !          1477: 
        !          1478:        * stmt.c (fixup_stack_slots): #if 0.
        !          1479:        * stmt.c (expand_finish_function): Don't call fixup_stack_slots
        !          1480:        because fixup_stack_1 is called elsewhere when necessary.
        !          1481: 
        !          1482:        * reload.c (find_reloads_address): New arg is location of the MEM
        !          1483:        whose address is being reloaded.  So we copy the MEM if it
        !          1484:        is one that can be shared.  New arg 0 means no need to copy the MEM.
        !          1485:        All callers pass the new arg.
        !          1486: 
        !          1487:        * stmt.c (assign_parms): Determine parm stack-size from
        !          1488:        the DECL_ARG_TYPE, not from the TREE_TYPE.
        !          1489:        Else loses when parm is declared `float' but passed as `double'.
        !          1490: 
        !          1491:        * emit-rtl.c (make_safe_from): Constants are already safe.
        !          1492:        Use proper machine mode for temp reg when needed.
        !          1493: 
        !          1494: Thu Mar 10 14:35:14 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1495: 
        !          1496:        * expr.c (emit_push_insn): Don't pass wrong type to plus_constant
        !          1497:        (case where there is no PUSH_ROUNDING).
        !          1498: 
        !          1499:        * expr.c (expand_call): Round partial[i] down to multiple of
        !          1500:        PARM_BOUNDARY before subtracting it from arg size on stack.
        !          1501:        Compute these sizes just once and keep them in vector `arg_size'.
        !          1502:        * expr.c (emit_push_insn): Handle `partial' uniformly, in accord
        !          1503:        with this new convention for how it affects the stack size.
        !          1504:        * stmt.c (assign_parms): Round NREGS down to PARM_BOUNDARY likewise.
        !          1505: 
        !          1506:        * obstack.h (obstack_free macro) [Not __GNUC__ but __STDC__]:
        !          1507:        Don't cast result of (obstack_free) to (int); just ignore it.
        !          1508: 
        !          1509:        * reload.c (find_reloads): Initialize operand_reloadnum.
        !          1510: 
        !          1511:        * optabs.c (emit_unop_insn): New argument CODE, used to make
        !          1512:        a REG_EQUAL note from operand OP0 if more than one insn results.
        !          1513:        Also a REG_RETVAL note.
        !          1514:        * expr.c (convert_move): Pass CODE arg to emit_unop_insn.
        !          1515:        * flow.c (propagate_block): Use insn_dead_p to decide whether
        !          1516:        to handle a REG_RETVAL note by skipping some insns.
        !          1517:        Always pass 1 for STRICT_LOW_OK for an insn that has a REG_RETVAL note.
        !          1518:        Handle case where REG_RETVAL points at an insn that's deleted.
        !          1519:        * flow.c (insn_dead_p): New operand STRICT_LOW_OK says an insn
        !          1520:        that sets STRICT_LOW_PART may be considered dead.
        !          1521: 
        !          1522:        * expr.c (expand_expr): Once again canonicalize X-C to X+(-C).
        !          1523:        Change on March 1 made it stop doing this.
        !          1524: 
        !          1525: Wed Mar  9 01:25:35 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1526: 
        !          1527:        * loop.c (move_movables): Don't always mark the moved reg
        !          1528:        as equivalent to a constant value: not if it is being cleared
        !          1529:        to zero-extend something or if it is used outside the loop.
        !          1530: 
        !          1531:        * expr.c (move_by_pieces_1): Finish last change.
        !          1532: 
        !          1533:        * stmt.c (assign_parms): Update stack_args_size properly.
        !          1534:        Figure FIRST_PARM_OFFSET when making the stack mem refs.
        !          1535: 
        !          1536:        * cse.c (insert): Build the related_value lists in the opposite order
        !          1537:        so that the oldest element in the chain is the one that follows
        !          1538:        the most basic element.
        !          1539: 
        !          1540:        * expr.c (expand_expr): COMPONENT_REF case: criterion for
        !          1541:        converting the the result is if MODE1 (its mode of arrival) isn't
        !          1542:        a mode we want.
        !          1543: 
        !          1544:        * toplev.c (rest_of_compilation): Fix typo setting TREE_ASM_WRITTEN.
        !          1545: 
        !          1546: Tue Mar  8 13:18:37 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1547: 
        !          1548:        * cse'ing of library calls.
        !          1549: 
        !          1550:        * expr.h: type `optab' is now a ptr to a struct.
        !          1551:        The old contents are now the `handlers' element.
        !          1552:        The `code' element gives the RTL code for the kind of expression
        !          1553:        this optab makes (PLUS for add_optab, etc.)
        !          1554:        Every var formerly declared `struct optab *' is now just `optab'.
        !          1555: 
        !          1556:        * optabs.c (init_optab, init_optabs): New function to init an optab
        !          1557:        and set its `code'.  Used in init_optabs.
        !          1558: 
        !          1559:        * optabs.c (expand_binop, expand_unop): Use the `code' field
        !          1560:        to add a REG_EQUAL note to the insn that copies a libcall's
        !          1561:        value into a pseudo.  Also a REG_RETVAL note pointing at the
        !          1562:        first insn for setting up args for the call.
        !          1563: 
        !          1564:        * cse.c (cse_insn): Process REG_EQUIV and REG_EQUAL datum almost like
        !          1565:        another set-src; put the actual src into the equivalence class of that.
        !          1566: 
        !          1567:        * flow.c (propagate_block): If a dead insn has a REG_RETVAL reg-note,
        !          1568:        either ignore or delete all the insns back to the insn the REG_ARG
        !          1569:        note points to.
        !          1570: 
        !          1571:        * local-alloc.c (block_alloc): Don't refrain from allocating a
        !          1572:        "constant" register if the constant value isn't ok for an immediate op.
        !          1573: 
        !          1574: 
        !          1575:        * dbxout.c (CONTIN): If DBX_CONTIN_LENGTH is <= 0, do nothing.
        !          1576: 
        !          1577:        * cccp.c: Extra default include dirs for C++.
        !          1578:        * cccp.c (main): For -M, strip dirs from object file name.
        !          1579: 
        !          1580:        * rtl.c (find_reg_note): New function.
        !          1581: 
        !          1582:        * expmed.c (store_fixed_bit_field): Don't AND with VALUE
        !          1583:        if VALUE's original mode had no more bits than we want.
        !          1584: 
        !          1585:        * expr.c (emit_library_call): Use varargs.
        !          1586: 
        !          1587:        * integrate.c (copy_and_substitute_rtx): Recognize arg_pointer_rtx
        !          1588:        and translate it just like frame_pointer_rtx.
        !          1589: 
        !          1590: Mon Mar  7 00:48:33 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1591: 
        !          1592:        * expmed.c (extract_fixed_bit_field):
        !          1593:        Shift counts were wrong for narrow MODE in signed case.
        !          1594:        Do the sign-extending shifts in the narrowest mode possible.
        !          1595:        Reduce big-endian case to little-endian case.
        !          1596:        Delete SLOW_ZERO_EXTEND conditional.
        !          1597: 
        !          1598:        * Implement constants in memory for RISC machines
        !          1599:        with limited abilities for immediate args and constant addresses.
        !          1600: 
        !          1601:        * genoutput.c (output_epilogue): Empty predicate-name
        !          1602:        is output as 0 in insn_operand_predicate.
        !          1603: 
        !          1604:        * expr.c (expand_expr): Change 4th arg to an `enum expand_modifier'
        !          1605:        Value EXPAND_SUM corresponds to old nonzero 4th arg.
        !          1606:        Value EXPAND_CONST_ADDRESS means ok to return an invalid MEM
        !          1607:        whose address is a constant.  Changes for this case in ADDR_EXPR,
        !          1608:        COMPONENT_REF and ..._DECL.
        !          1609: 
        !          1610:        * varasm.c (output_arith_constant): Function deleted.
        !          1611:        * tm-*.h: (ASM_OUTPUT_{INT,SHORT,CHAR}): 2nd arg is now an RTX
        !          1612:        and output it using `output_addr_const'.
        !          1613:        * varasm.c (output_constant): Change uses of those macros.
        !          1614: 
        !          1615:        * varasm.c (init_const_rtx_hash_table): Initialize constant pool
        !          1616:        for a new function.  Called from `expand_function_start'.
        !          1617:        * varasm.c (force_const_mem): Turn a constant rtx into a MEM rtx
        !          1618:        which refers to the constant pool.  Other new subroutines too.
        !          1619:        (force_const_double_mem): Use force_const_mem to make the MEM.
        !          1620:        (immed_real_const): No longer record the REAL_CST node in the rtx.
        !          1621: 
        !          1622:        * explow.c (force_reg): If arg is a constant and not legitimate,
        !          1623:        put it in the constant pool with force_const_mem.
        !          1624:        Mark the register as equivalent to the constant value.
        !          1625:        * expr.c (emit_move_insn): Likewise.
        !          1626:        * explow.c (break_out_mem_refs): Use force_reg to put into a reg.
        !          1627:        * explow.c (memory_address): Likewise.
        !          1628:        * expr.c (expand_expr): ADDR_EXPR case: likewise.
        !          1629: 
        !          1630:        * expr.c (expand_call): Do force_reg on each register-operand
        !          1631:        so it will go through a pseudo and can be cse'd.
        !          1632: 
        !          1633:        * recog.c (immediate_operand, nonmemory_operand, general_operand):
        !          1634:        For constant operands, use LEGITIMATE_CONSTANT_P to decide value.
        !          1635:        * tm-*.h: Define LEGITIMATE_CONSTANT_P.
        !          1636: 
        !          1637:        * reload1.c (reload): Invalid constants can't go in reg_equiv_constant.
        !          1638: 
        !          1639: Sun Mar  6 22:49:06 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1640: 
        !          1641:        * reload.c (push_reloads): If IN occurs within OUT,
        !          1642:        don't reuse an existing input-only reload.  Otherwise would lose on
        !          1643:        (set (mem (plus R C)) (plus R C1)) if R is available in a spill reg.
        !          1644: 
        !          1645:        * reload1.c (choose_reload_targets): Don't choose an inherited
        !          1646:        reload register that's in use for another reload.
        !          1647:        Without this, above change doesn't have an effect.
        !          1648: 
        !          1649:        * Implement the `unchanging' flag in MEM and REG rtx's.
        !          1650:        Also simplify code with a new subroutine `change_address'.
        !          1651: 
        !          1652:        * emit-rtl.c (change_address): Return new memory ref like an old
        !          1653:        one but with specified mode and address.
        !          1654:        * expmed.c (extract{,_split,_fixed}_bit_field): Use change_address.
        !          1655:        (store{,_split,_fixed}_bit_field): Likewise.
        !          1656:        * expr.c (store_expr, expand_expr): Likewise.
        !          1657: 
        !          1658:        * expr.c (move_by_pieces): Args now memrefs, not addresses.
        !          1659:        Eliminate the FROM_VOL and TO_VOL args since the memrefs indicate.
        !          1660:        Change the structure `struct move_by_pieces' similarly.
        !          1661:        (move_by_pieces_1): Same changes; use change_address.
        !          1662:        (emit_block_move, emit_push_insn): Calls to move_by_pieces changed.
        !          1663: 
        !          1664:        * integrate.c (copy_rtx_and_substitute): Use change_address;
        !          1665:        handle ->unchanging field.
        !          1666: 
        !          1667:        * rtl.c (rtx_varies_p): Regs or memrefs with ->unchanging don't vary.
        !          1668:        (copy_rtx): Perserve ->unchanging.
        !          1669:        (print_rtx): Print ->unchanging as /u.
        !          1670: 
        !          1671:        * stmt.c (expand_decl): Set ->unchanging on `const' decls.
        !          1672:        (fixup_memory_subreg): Use change_address.
        !          1673:        (assign_parms): Record in the rtl which parms are volatile or const.
        !          1674: 
        !          1675:        * varasm.c (assemble_variable): Set ->unchanging on `const' decls.
        !          1676:        (output_constant_def): Always set ->unchanging for constant refs.
        !          1677: 
        !          1678:        * cse.c (canon_hash): Don't treat a MEM as "in memory"
        !          1679:        if its ->unchanging bit is set.
        !          1680: 
        !          1681:        * loop.c (invariant_p): A REG or MEM with ->unchanging is invariant
        !          1682:        (for a MEM, the address must be invariant).
        !          1683: 
        !          1684: Sat Mar  5 13:22:11 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1685: 
        !          1686:        * genconfig.c (walk_insn_part): DO consider MATCH_DUPs
        !          1687:        when calculating MAX_RECOG_OPERANDS.
        !          1688:        (gen_expand): define_expand is now different from define_insn.
        !          1689:        Compute max # SETs or CLOBBERs for any one sub-insn in a define_expand,
        !          1690:        instead of summing them all.  And don't count the MATCH_DUPs at all.
        !          1691: 
        !          1692:        * genemit.c (max_operand_1): Record largest opno in a MATCH_DUP
        !          1693:        separately from largest in a MATCH_OPERAND.
        !          1694:        (gen_expand): An operand # with only MATCH_DUPs gets
        !          1695:        a local variable in the gen_ function we output.
        !          1696: 
        !          1697:        * integrate.c (save_for_inline): Delete vestige of NOTE_INSN_IS_DECL.
        !          1698: 
        !          1699:        * cse.c (invalidate): Handle subregs.
        !          1700:        (cse_ins, invalidate_from_clobbers): Do call `invalidate' for subregs.
        !          1701:        (insert_regs): When assigning one subreg from a like one,
        !          1702:        make the two regs equivalent.
        !          1703:        (cse_insn): Do call insert_regs when dest is a subreg.
        !          1704: 
        !          1705:        * expr.c (expand_call): Precompute all args going via hard regs
        !          1706:        since even arithmetic could require a library call.
        !          1707: 
        !          1708: Fri Mar  4 15:48:17 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1709: 
        !          1710:        * stor-layout.c (layout_parms): Function deleted.
        !          1711:        * stmt.c (expand_function_start): Don't call it.
        !          1712: 
        !          1713:        * stmt.c (assign_parms):
        !          1714:        stack_args_size counts size of args so far passed on stack.
        !          1715:        Use PARM_BOUNDARY when counting it; derive stack offsets from it.
        !          1716:        Set current_function_args_size from it.
        !          1717: 
        !          1718:        When an arg is split between regs and stack, make stack space
        !          1719:        for the rest of it, and count it.
        !          1720:        In a varargs function, push the last arg onto the stack.
        !          1721:        When an arg is passed in regs alone, don't remember a stack slot
        !          1722:        for it, and if it needs one, use assign_stack_local.
        !          1723: 
        !          1724:        Set DECL_OFFSET to the stack offset, or -1 if parm came in regs.
        !          1725: 
        !          1726:        * expr.c (expand_call): Anonymous args of a varargs function
        !          1727:        are always passed on the stack.
        !          1728: 
        !          1729:        * varasm.c (force_const_double_mem): Copy the MEM rtx
        !          1730:        if it may need to be smashed by reloading.
        !          1731: 
        !          1732:        * genemit.c (gen_expand): define_expand must have nonempty pattern
        !          1733:        even though, due to `return' statements in the code-to-run,
        !          1734:        that pattern may not be used to generate code.
        !          1735: 
        !          1736: Thu Mar  3 17:08:43 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1737: 
        !          1738:        * expr.c (expand_expr): If supposed to sign-extend an enum
        !          1739:        which is never negative, zero-extend instead (unless SLOW_ZERO_EXTEND).
        !          1740:        (store_expr): Likewise.
        !          1741: 
        !          1742:        * reload.c (find_reloads): 'm' for CONST_DOUBLE: clear BADOP, not BAD.
        !          1743:        After force_const_double_mem, do find_reloads_toplev on the MEM.
        !          1744:        (find_reloads_address): Handle constant addresses (on machines
        !          1745:        that don't allow them).
        !          1746: 
        !          1747:        * final.c (set_current_gdbfile): New fn, get the gdbfile structure
        !          1748:        for specified filename.
        !          1749:        (output_source_line): Use set_current_gdbfile for the file.
        !          1750:        * varasm.c (assemble_variable): Call set_current_gdbfile
        !          1751:        for the declaration's source file, so GDB won't ignore the file.
        !          1752: 
        !          1753:        * varasm.c (force_const_double_mem): Build a new REAL_CST node
        !          1754:        and get its data type from the machine mode of the CONST_DOUBLE.
        !          1755:        (immed_real_const): Don't save the REAL_CST tree node.
        !          1756:        * typecheck.c (get_floating_type): Return float type for given mode.
        !          1757: 
        !          1758:        * integrate.c (expand_inline_function): Ignore the (USE (REG...))
        !          1759:        (for the return-register) at the end of the inline function.
        !          1760:        After a CALL_INSN, imagine the (SET (REG ...) (REG ...)) for
        !          1761:        the return-register if the return-register isn't explicitly used.
        !          1762: 
        !          1763: Wed Mar  2 22:08:49 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1764: 
        !          1765:        * typecheck.c (build_array_ref): Do default_conversion on INDEX.
        !          1766: 
        !          1767: Tue Mar  1 15:49:34 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1768: 
        !          1769:        * expr.c (expand_call): Always get a SYMBOL_REF for a fixed function.
        !          1770:        If may be alloca, set may_call_alloca.
        !          1771:        (gen_call_1): Never put a SYMBOL_REF through `memory_address';
        !          1772:        but if function cse is wanted, just copy it to a register.
        !          1773:        If NO_FUNCTION_CSE is defined, never do function cse.
        !          1774: 
        !          1775:        * expr.c (init_expr): New function, does init_queue and inits
        !          1776:        other things.
        !          1777: 
        !          1778:        * stmt.c (expand_function_start): Call init_expr, not init_queue.
        !          1779: 
        !          1780:        * optabs.c (expand_binop): Don't clobber OP0 and OP1
        !          1781:        if may call delete_insns_since later.
        !          1782: 
        !          1783:        * expr.c (emit_library_call): PUSH_ARGS_REVERSE test was backwards.
        !          1784: 
        !          1785:        * cse.c (cse_insn): Do canon_reg on the size and position operands
        !          1786:        in a ZERO_EXTEND or SIGN_EXTEND that is a destination.
        !          1787: 
        !          1788:        * tm-*.h: Define SLOW_BYTE_ACCESS.
        !          1789:        * expmed.c ({store,extract}_fixed_bit_field):
        !          1790:        If SLOW_BYTE_ACCESS, get/set all bit fields from full words.
        !          1791: 
        !          1792:        * combine.c (subst): Simplify
        !          1793:        (zero_extend:SI (subreg:QI (zero_extract ...))).
        !          1794:        * combine.c (simplify_and_const_int): Simplify
        !          1795:        (and (zero_extract ...) (const_int ...)).
        !          1796: 
        !          1797:        * local-alloc.c (qty_compare{,_1}): Test of qty_phys_sugg was reversed.
        !          1798:        (combine_regs): If one pseudo gets two suggested hard regs
        !          1799:        (one at birth and one at death), prefer the one from birth
        !          1800:        unless we see at death that it's no good.
        !          1801: 
        !          1802:        * expr.c (expand_expr): Ignore sum_ok unless mode is Pmode.
        !          1803:        Don't use force_operand unless sum_ok is set.
        !          1804: 
        !          1805: Mon Feb 29 19:23:50 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1806: 
        !          1807:        * expr.c (emit_move_insn): When a CONST_DOUBLE needs moving
        !          1808:        by pieces, force it into memory, unless it is dconst0_rtx,
        !          1809:        in which case each piece is const0_rtx.
        !          1810:        (emit_push_insn): Likewise.  Also, write code for pushing a
        !          1811:        non-BLK mode which has no "mov" insn defined, but only
        !          1812:        in the case where there is no PUSH_ROUNDING.
        !          1813: 
        !          1814:        * expr.c (do_tablejump): Put constant term in address last.
        !          1815: 
        !          1816:        * toplev.c (xrealloc): On error, call fatal instead of abort.
        !          1817: 
        !          1818:        * optabs.c (emit_cmp_insn): If genning from tst_optab,
        !          1819:        make the operand fit its predicate.
        !          1820: 
        !          1821:        * optabs.c (expand_float): Don't adjust stack between cmp and jump.
        !          1822: 
        !          1823:        * optabs.c (expand_binop): Recursive calls can return 0; handle
        !          1824:        that event by deleting any preparatory insns.  Also don't smash
        !          1825:        TARGET when this happens.
        !          1826: 
        !          1827:        * reload.c (push_reload): If IN != *INLOC, set reload_nocombine.
        !          1828:        (combine_reloads): Don't combine an input reload with reload_nocombine.
        !          1829: 
        !          1830:        * jump.c (jump_optimize): Don't delete stack adjusts unless
        !          1831:        EXIT_IGNORE_STACK is nonzero.
        !          1832:        * expr.c (clear_pending_stack_adjust): Likewise.
        !          1833:        * tm-*.h: When EXIT_IGNORE_STACK is defined, give it `1' as defn.
        !          1834: 
        !          1835:        * expr.c (expand_call): Initialize args_size.
        !          1836:        Don't push a block if args_size is 0.
        !          1837:        (emit_library_call): Don't include register-args (or reg-parts
        !          1838:        of partial ones) in args_size.
        !          1839:        Don't push a block if args_size is 0.
        !          1840: 
        !          1841:        * expr.c (expand_expr): For DECLs in memory, check the address
        !          1842:        validity with memory_address_p, and preserve volatility info.
        !          1843: 
        !          1844:        * stmt.c (expand_function_end): fixup_gotos needs 2 args.
        !          1845: 
        !          1846:        * jump.c (mark_jump_label): If INSN is 0, don't set its JUMP_LABEL.
        !          1847:        Inside an ADDR_VEC or ADDR_DIFF_VEC, recurse with 0 for INSN.
        !          1848: 
        !          1849:        * varasm.c (force_const_double_mem): Must zero TREE_CST_RTL
        !          1850:        before output, or nothing will happen.
        !          1851: 
        !          1852: Sun Feb 28 01:08:53 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1853: 
        !          1854:        * optabs.c (emit_unop_insn): Generate and emit an insn
        !          1855:        given the insn-code and the two operands (one out, one in).
        !          1856:        Can move the operands into registers when needed for various
        !          1857:        reasons.
        !          1858:        * expr.c (convert_move): Use emit_unop_insn for outputting the
        !          1859:        conversion insns.
        !          1860: 
        !          1861:        * expr.c (emit_library_call): Use arg's nominal mode to choose
        !          1862:        a reg to pass it in, not actual mode (which can be VOIDmode).
        !          1863: 
        !          1864:        * insn-emit.c (emit_insn): If arg is empty SEQUENCE, do nothing.
        !          1865: 
        !          1866:        * genemit.c (gen_expand): Scan the rtl-pattern for predicates
        !          1867:        and machine modes of the operands.
        !          1868: 
        !          1869:        * m68k.d (dbra patterns): Add HPUX_ASM conditionals.
        !          1870: 
        !          1871:        * rtl.c (reg_mentioned_p): Use "equal", not "eq", when
        !          1872:        REG isn't a register.
        !          1873:        * reload.c (combine_reloads): Verify not reg_mentioned_p even if
        !          1874:        the input reload's value isn't a register.
        !          1875: 
        !          1876:        * reload.c (operands_match_p): If successful and 2nd arg
        !          1877:        has a pre-increment that matches a non-increment, return 2.
        !          1878: 
        !          1879:        * reload1.c (reload): At end, clobber a pseudoreg to a MEM
        !          1880:        even if it's an out-of-range address.  It doesn't affect the
        !          1881:        assembler code in this case, but it makes the dbx output correct.
        !          1882: 
        !          1883:        * recog.c (constrain_operands): When operands_match_p returns 2,
        !          1884:        in the constraint alternative that is ultimately successful,
        !          1885:        copy the output operand from the input that it matched
        !          1886:        so that the assembler insn that is output shows the pre-increment.
        !          1887: 
        !          1888: Sat Feb 27 15:16:47 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1889: 
        !          1890:        * combine.c (subst): When optimizing
        !          1891:         (set (zero_extract ...) (and (zero_extract ...) const))
        !          1892:         must arrange to have 1's, not 0's, shifted into low bits of const.
        !          1893: 
        !          1894:        * decl.c (grokdeclarator): When return-type defaults to int,
        !          1895:        don't warn, just set warn_about_return_type.
        !          1896:        (start_function): See that variable and warn, after starting function.
        !          1897: 
        !          1898:        * toplev.c (count_error): No longer print newline if not quiet.
        !          1899:        (report_error_function): If not quiet, print a newline if
        !          1900:        printing anything, and don't print the function name.
        !          1901: 
        !          1902:        * reload1.c (choose_reload_targets):
        !          1903:        Fix the loop that checks for consecutive available spill regs.
        !          1904:        Set `have_groups' nonzero if any reload wants a group.
        !          1905:        In that case, for non-group reloads, prefer a reg that can't be in
        !          1906:        group, or else one that has only one available neighbor.
        !          1907: 
        !          1908:        * reload1.c (reload): Find separately the max need for each class
        !          1909:        for single registers, groups of registers, and single registers
        !          1910:        not in any group.  (The last one counts non-group reloads
        !          1911:        in insns that have at least one group reload.)
        !          1912:        Then make sure enough of each kind are found.
        !          1913: 
        !          1914:        * expmed.c: Now needs flags.h and recog.h (therefore insn-config.h).
        !          1915: 
        !          1916:        * expmed.c (store_bit_field):
        !          1917:        Delete redundant protect_from_queue.
        !          1918:        Force VALUE out of memory if -fforce-mem.
        !          1919:        If insv's predicate for VALUE wants a register, put it there.
        !          1920: 
        !          1921:        * expmed.c (extract_bit_field):
        !          1922:        Force TARGET out of memory if -fforce-mem.
        !          1923:        If insv's predicate for TARGET wants a register, put it there.
        !          1924: 
        !          1925: Fri Feb 26 00:12:48 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1926: 
        !          1927:        * reload1.c (eliminate_frame_pointer): Don't check for pushes
        !          1928:        unless PUSH_ROUNDING is defined.
        !          1929: 
        !          1930:        * reload.c: Don't define REG_OK_FOR_{INDEX,BASE}_P
        !          1931:        (since the tm file is supposed to do it).
        !          1932: 
        !          1933:        * expr.c (emit_push_insn, expand_call):
        !          1934:        Don't use PUSH_ROUNDING if it's not defined.
        !          1935: 
        !          1936:        * expr.c (preexpand_calls): Do nothing for constants and decls.
        !          1937: 
        !          1938:        * expr.c (expand_call, emit_library_call): When PUSH_ROUNDING
        !          1939:        is not defined, use ROUND_CALL_BLOCK_SIZE to round the size
        !          1940:        of the block of arguments.
        !          1941: 
        !          1942:        * expr.c (expand_call): Don't count register-args in ARGS_SIZE.
        !          1943: 
        !          1944:        * rtl.h, emit-rtl.c: Create static_chain_incoming_rtx
        !          1945:        and struct_value_incoming_rtx.
        !          1946:        * stmt.c (expand_function_start): Use ..._incoming_rtx where needed.
        !          1947: 
        !          1948:        * expr.c (expand_call): Use new macros INIT_CUMULATIVE_ARGS,
        !          1949:        CUMULATIVE_ARGS and FUNCTION_ARG_ADVANCE to update data
        !          1950:        on args scanned so far.
        !          1951:        (emit_library_call): Likewise.
        !          1952:        * stmt.c (assign_parms): Likewise.
        !          1953:        * tm-spur.h, tm-m68k.h: Define these macros.
        !          1954: 
        !          1955:        * rtl.h (NUM_MACHINE_MODES): NUM_MACHINE_MODE renamed.
        !          1956:        * rtl.c, genrecog.c: Change places it is used.
        !          1957: 
        !          1958:        * cccp.c (output_line_command): line_cmd_buf should be chars, not ints.
        !          1959: 
        !          1960: Thu Feb 25 13:33:29 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1961: 
        !          1962:        * genemit.c (gen_expand): Don't lose if pattern is empty-vector.
        !          1963: 
        !          1964:        * genconfig.c (gen_insn): Don't lose if pattern is empty-vector.
        !          1965: 
        !          1966:        * expr.c (expand_expr): For COMPONENT_REF, don't convert to tmode
        !          1967:        unless the mode we get is unacceptable.
        !          1968: 
        !          1969:        * loop.c (scan_loop, move_movables): New field `partial' is 1 for
        !          1970:        zero-extending clr insn; don't make the reg invariant when it's moved.
        !          1971: 
        !          1972:        * optabs.c (expand_unop, expand_binop, emit_cmp_insn):
        !          1973:        mode-argument to predicates was missing.
        !          1974: 
        !          1975:        * optabs.c (expand_binop): If gen-function returns 0, this means
        !          1976:        the insn wasn't available.
        !          1977: 
        !          1978:        * reload.c (find_reloads): Don't make optional reloads for operands
        !          1979:        that match other operands.
        !          1980: 
        !          1981:        * reload.c (combine_reloads): Reject optional output reload.
        !          1982: 
        !          1983:        * reload.c (find_equiv_reg): Know that CALL_INSNs clobber memory.
        !          1984: 
        !          1985:        * typecheck.c (build_binary_op_nodefault):
        !          1986:        If doing a short shift, leave the shift-count as a fullword.
        !          1987: 
        !          1988: Tue Feb 23 14:43:46 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          1989: 
        !          1990:        * combine.c (subst): Count, in n_occurrences, # times FROM is seen.
        !          1991:        (try_combine): Refuse to combine x=*y++ into z = x*x.
        !          1992: 
        !          1993:        * loop.c (invariant_p): Frame pointer and arg pointer are invariant.
        !          1994:        (move_movables): Don't forget to set ->done!
        !          1995:        When moving the matching movables, don't forget to set n_times_set.
        !          1996: 
        !          1997:        * expmed.c (expand_shift): Reorder strategies for logical shift;
        !          1998:        if widening, try all ashift strategies before extzv.
        !          1999: 
        !          2000:        * typecheck.c (build_binary_op_nodefault):
        !          2001:        Always return error_mark if either operand is one.
        !          2002: 
        !          2003:        * recog.c (nonmemory_operand): New predicate.
        !          2004: 
        !          2005:        * optabs.c (expand_unop, expand_binop, emit_cmp_insn):
        !          2006:        Don't treat `register_operand' as special.  Apply the predicate
        !          2007:        to the rtx; if the predicate fails, use a register instead.
        !          2008: 
        !          2009: Mon Feb 22 22:37:32 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          2010: 
        !          2011:        * expr.c (expand_calls): Preexpand all calls in arguments
        !          2012:        that are passed in regs before copying any of them into the regs.
        !          2013: 
        !          2014:        * expr.c (emit_push_insn): Three more args.
        !          2015:        EXTRA for extra space to leave.
        !          2016:        ARGS_ADDR and ARGS_SO_FAR for using move-insns on machines
        !          2017:        that lack true push insns.
        !          2018: 
        !          2019:        * expr.c (emit_library_call, expand_call):
        !          2020:        Use the new arguments of `emit_push_insn'.
        !          2021: 
        !          2022:        * expr.c (PUSH_ARGS_REVERSED): defined if handle args last-to-firs.
        !          2023: 
        !          2024: Sun Feb 21 12:17:59 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          2025: 
        !          2026:        * toplev.c (rest_of_compilation): Set TREE_ASM_WRITTEN
        !          2027:        when a function is really output as assembler code.
        !          2028:        Don't do inlining of a function that is already made inline;
        !          2029:        instead, output it as assembler code, because this must be
        !          2030:        the second call for that function.
        !          2031: 
        !          2032:        * decl.c (finish_compilation): Delete it.
        !          2033:        * toplev.c (compile_file): Output pending inline functions at the end
        !          2034:        in the same way tentative-defined variables are output.
        !          2035: 
        !          2036:        * emit-rtl.c (restore_reg_data): New fn: given chain of insns,
        !          2037:        restore emit-rtl's data on registers from the regs they use.
        !          2038: 
        !          2039:        * integrate.c (output_inline_function): Use restore_reg_data.
        !          2040:        (fill_regno_reg_rtx_as_needed): Now restore_reg_data_1 in emit-rtl.c.
        !          2041: 
        !          2042:        * tree.c (build_decl): Function moved from decl.c.
        !          2043:        No longer set attributes of function decls specially.
        !          2044: 
        !          2045:        * decl.c (implicitly_declare, builtin_function, grokdeclarator):
        !          2046:        Don't expect build_decl to set attributes of FUNCTION_DECL.
        !          2047: 
        !          2048:        * tree.c (preserve_data): New fn, make all data now on
        !          2049:        maybepermanent_obstack last permanently.
        !          2050: 
        !          2051:        * cse.c (cse_insn): Remove a STRICT_LOW_PART from the dest rtx
        !          2052:        before putting it in the hash table.
        !          2053: 
        !          2054:        * symout.c (symout_block): Fix the args to `symout_block_symbols'.
        !          2055: 
        !          2056: Sat Feb 20 00:07:52 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          2057: 
        !          2058:     Start of changes for inline functions.
        !          2059:     Changes received from Tiemann, then slightly rearranged for simplicity.
        !          2060: 
        !          2061:        * integrate.c: New file (Tiemann's rtl2.c).
        !          2062:        * integrate.c (function_cannot_integrate_p):
        !          2063:        New fn, only checks whether current fn is safe and good to inline.
        !          2064:        Returns an error message string if not.
        !          2065: 
        !          2066:        * expr.c (current_args_size): Var made static.
        !          2067:        (store_expr): Fn no longer static.
        !          2068:        (stack_pointer_rtx): Use this var for all refs to the stack pointer.
        !          2069:        (struct_value_rtx, static_chain_rtx): Likewise
        !          2070: 
        !          2071:        * expr.c (expand_call): Detect calls to integrable functions
        !          2072:        and integrate them.
        !          2073:        **If fn is not named "alloca" then assume it is not `alloca'. **
        !          2074: 
        !          2075:        * emit-rtl.c (max_label_num): New fn, returns number for next label.
        !          2076:        (get_first_label_num): New fn, returns first label of current fn.
        !          2077:        (init_emit): Save first label number of this fn.
        !          2078: 
        !          2079:        * emit-rtl.c (gen_inline_header_rtx): New fn, make an INLINE_HEADER.
        !          2080: 
        !          2081:        * emit-rtl.c (emit_declaration): New fn to emit new kind of NOTE.
        !          2082: 
        !          2083:        * emit-rtl.c (init_emit_once): New fn.
        !          2084:        Move inits of unique rtl objects here, from init_emit.
        !          2085: 
        !          2086:        * decl.c (finish_compilation): New fn to compile separately
        !          2087:        any nonglobal inline functions that need to be addressable.
        !          2088: 
        !          2089:        * decl.c (grokdeclarator): Handle `inline' kwd among the declspecs.
        !          2090:        Set TREE_INLINE if it's safe.
        !          2091: 
        !          2092:        * decl.c (finish_function): If fn was inlined, don't clear
        !          2093:        the DECL_ARGUMENTS or DECL_RESULT or DECL_INITIAL.
        !          2094: 
        !          2095:        * gen*.c: Provide rtl_obstack, not current_obstack.
        !          2096: 
        !          2097:        * rtl.c (rtl_obstack): Variable: ptr to obstack to use for making rtl.
        !          2098:        * rtl.c (rtx_alloc, rtvec_alloc): Use that obstack.
        !          2099:        * rtl.c (copy_rtx): Copy the `integrated' flag.
        !          2100:        * rtl.c (print_rtx): Print that flag as `/i'.
        !          2101: 
        !          2102:        * rtl.def: New rtx code INLINE_HEADER.
        !          2103: 
        !          2104:        * rtl.h (struct rtx_def): Add `integrated' field.
        !          2105:        * rtl.h: Define macros for fields in an inline_header rtx.
        !          2106: 
        !          2107:        * stmt.c (max_parm_reg_num, get_first_function_insn):
        !          2108:        New fns, return info on parm regs and the insns that init them.
        !          2109: 
        !          2110:        * stmt.c (expand_decl): Simplify with new local `type'.
        !          2111: 
        !          2112:        * stmt.c (stack_pointer_rtx): Replace all refs to stack pointer
        !          2113:        with this shared rtx.
        !          2114:        * stmt.c (struct_value_rtx): Likewise.
        !          2115: 
        !          2116:        * stmt.c (expand_start_function): Call init_pending_stack_adjust
        !          2117:        instead of clear_pending_stack_adjust.
        !          2118:        If not using a return-label, set `return_label' to 0.
        !          2119: 
        !          2120:        * stmt.c (expand_null_return, expand_end_function):
        !          2121:        Call clear_pending_stack_adjust unconditionally.
        !          2122: 
        !          2123:        * expr.c (clear_pending_stack_adjust): Move the conditionals here.
        !          2124:        For now, this fn is a no-op, since it's not safe in an inline fn
        !          2125:        and the stack adjusts are deleted by jump.c in if optimizing.
        !          2126: 
        !          2127:        * expr.c (init_pending_stack_adjust): New fn.
        !          2128: 
        !          2129: Fri Feb 19 14:30:13 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          2130: 
        !          2131:        * toplev.c (main): Decode -finline-functions, -fkeep-inline-functions.
        !          2132: 
        !          2133:        * toplev.c (rest_of_compilation):
        !          2134:        At start, save the rtl if function should be inline.
        !          2135:        For inline function, if we don't yet know whether it should be
        !          2136:        compiled on its own, don't do so.
        !          2137: 
        !          2138:        * toplev.c (compile_file): Clear, and later print, `integration_time'.
        !          2139:        Call `init_emit_rtl' when starting.
        !          2140:        Call `finish_compilation' at the end.
        !          2141: 
        !          2142:        [Add an extra arg to the error and warning functions?]
        !          2143: 
        !          2144:        * tree.c ({push,pop,clear}_momentary):
        !          2145:        Change momentary_stack from a char ** to a struct momentary_level *.
        !          2146: 
        !          2147:        * tree.c (build_pointer_type): Put temporary type in `saveable_obstack'
        !          2148:        * tree.c (build_type_variant): Likewise.
        !          2149:        * tree.c (make_node): Likewise.  Also put decls and LET_STMTs there.
        !          2150:        * tree.c (type_hash_canon): Free a temporary type in `saveable_obstack'
        !          2151: 
        !          2152:        * tree.c (perm_tree_cons): Like `tree_cons' but on perm. obstack.
        !          2153: 
        !          2154:        * tree.c (init_tree, {{end_,}temporary,permanent}_allocation):
        !          2155:        Handle `maybepermanent_obstack' and `saveable_obstack' and
        !          2156:        `rtl_obstack'.
        !          2157: 
        !          2158:        * tree.h (TREE_INLINE): New attribute macro.
        !          2159:        * tree.h (DECL_SAVED_INSNS, DECL_FRAME_SIZE):
        !          2160:        New components in a FUNCTION_DECL.
        !          2161:        Delete the `unused` slot in a `struct tree_decl'.
        !          2162: 
        !          2163:        * typecheck.c (mark_addressable): Set TREE_ADDRESSABLE
        !          2164:        even in FUNCTION_DECLs.
        !          2165: 
        !          2166:        * typecheck.c (build_function_call):
        !          2167:        If function is a FUNCTION_DECL, avoid setting TREE_ADDRESSABLE
        !          2168:        when taking its address.
        !          2169: 
        !          2170:        * parse.h: Define RID_INLINE.
        !          2171:        * parse.y: Define keyword `inline'; set up ridpointers for it.
        !          2172:        (yylex): Don't recognize `inline' of -fno-asm or -ftraditional.
        !          2173: 
        !          2174:        * flags.h: New vars flag_inline_functions
        !          2175:        and flag_keep_inline_functions.
        !          2176: 
        !          2177:   End of changes for inline functions.
        !          2178:        
        !          2179:        * tree.c (convert): If EXPR's type is an error_mark, return error_mark.
        !          2180: 
        !          2181:        * Makefile (install): Don't strip the executables.
        !          2182: 
        !          2183:        * jump.c (delete_insn): Deleting a label's target
        !          2184:        can delete either NEXT and PREV!  So must search for a
        !          2185:        following nondeleted insn to return.
        !          2186: 
        !          2187:        * typecheck.c (build_function_call): Typo in validating
        !          2188:        data type of function.
        !          2189: 
        !          2190:        * genoutput.c (gen_expand): Must create a `struct data' even
        !          2191:        for a define_expand, so we can output the proper insn_gen_function
        !          2192:        and leave zeros in the other tables.
        !          2193: 
        !          2194:        * loop.c (scan_loop): Replace the code for handling zero-extends
        !          2195:        with unconditional code that checks for a pair of insns.
        !          2196: 
        !          2197:        * m68k.md: Do zero-extend using define_expand to generate
        !          2198:        a pair of insns, to set all to zero and then copy the low part.
        !          2199: 
        !          2200: Thu Feb 18 15:54:00 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          2201: 
        !          2202:        * emit-rtl.c (emit_insn): If arg is a SEQUENCE, emit several insns.
        !          2203:        * emit-rtl.c (classify_insn): Given an RTX, return the rtx-code for
        !          2204:        an insn containing it: CODE_LABEL, INSN, JUMP_INSN or CALL_INSN.
        !          2205: 
        !          2206:        * rtl.def: New RTX types DEFINE_EXPAND and SEQUENCE.
        !          2207:        * gen*.c: Handle DEFINE_EXPAND.  Only genemit.c does real work.
        !          2208: 
        !          2209:        * make.com, make-cc1.com, make-cccp.com: New, VMS command files.
        !          2210: 
        !          2211:        * tm-vms.h: New file, used as tm.h to generate VMS code.
        !          2212: 
        !          2213:        * tm-vax.h (FUNCTION_PROLOGUE): Turn off no bits in the mask;
        !          2214:        let call_used_registers alone control this.
        !          2215:        Call MAYBE_VMS_FUNCTION_PROLOGUE, and define that as no-op.
        !          2216: 
        !          2217:        * tm-vax.h (TARGET_VAXC_ALIGNMENT): New target-flag bit.
        !          2218:        BIGGEST_ALIGNMENT, EMPTY_FIELD_BOUNDARY and POINTER_BOUNDARY use it.
        !          2219: 
        !          2220:        * varasm.c (assemble_function): Use ASM_DECLARE_FUNCTION_NAME
        !          2221:        if it is defined.
        !          2222: 
        !          2223:        * varasm.c (assemble_variable): On an external,
        !          2224:        use ASM_OUTPUT_EXTERNAL if defined.  Default is do nothing, as before.
        !          2225: 
        !          2226:        * toplev.c:
        !          2227:        Use FATAL_EXIT_CODE and SUCCESS_EXIT_CODE.
        !          2228:        Don't include time.h and resource.h on VMS.
        !          2229:        (main) Define __VERSION__ if not already defined.
        !          2230:        Conditionalize setrlimit on RLIMIT_STACK.       
        !          2231:        Test __GNUC__, not __GNU__.
        !          2232:        Don't do `ps v' on VMS.
        !          2233:        (gettime): Conditional code for VMS.
        !          2234: 
        !          2235:        * gcc.c: Define __GNUC__ as well as __GNU__.
        !          2236:        __GNU__ will be deleted in a future version.
        !          2237: 
        !          2238:        * symout.c (symout_finish) [VMS]: Don't refer to `getwd' on VMS.
        !          2239:        * symout.c (symout_init) [VMS]: Fatal error; GDB syms not supported.
        !          2240: 
        !          2241:        * parse.y (yylex): Handle DOLLARS_IN_IDENTIFIERS.
        !          2242: 
        !          2243:        * genoutput.c (gen_insn): Workaround for VMS printf %s bug.
        !          2244: 
        !          2245:        * gen*.c: Include config.h.  Whenever exiting, use
        !          2246:        SUCCESS_EXIT_CODE or FATAL_EXIT_CODE.
        !          2247: 
        !          2248:        * config-*.h: Define SUCCESS_EXIT_CODE and FATAL_EXIT_CODE.
        !          2249:        * config-vms.h: New file, mostly like config-vax.h.
        !          2250: 
        !          2251: Wed Feb 17 13:35:34 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          2252: 
        !          2253:        * cccp.c: VMS support from Kashtan.
        !          2254:        Some #include files are conditional.
        !          2255:        Use file_size_and_mode instead of fstat.
        !          2256:        When reading file contents, the size we get from that
        !          2257:        is just an upper bound; don't assume it must match.
        !          2258:        Replacement definitions of read and write for VMS.
        !          2259:        Different default include directories.
        !          2260:        Conditionalize the setrlimit code on RLIMIT_STACK.
        !          2261:        Use SUCCESS_EXIT_CODE when exiting if no errors;
        !          2262:        both that and FATAL_EXIT_CODE are not #defined if already defined.
        !          2263: 
        !          2264:        Treat $ as an identifier-character if DOLLARS_IN_IDENTIFIERS.
        !          2265:        Rename the `delete' function as `delete_macro'
        !          2266:        to avoid VMS name conflict.
        !          2267: 
        !          2268:        * cexp.y: Treat $ as an identifier-character if DOLLARS_IN_IDENTIFIERS.
        !          2269: 
        !          2270:        * stmt.c (fixup_memory_offset): Do big-endian compensation
        !          2271:        only within a word, not for DImode vs SImode.
        !          2272: 
        !          2273:        * stmt.c (fixup_var_refs): Don't fix up the insn to load the var
        !          2274:        from its own stack slot; delete it instead.
        !          2275: 
        !          2276:        * tm-ns32k.h (MODES_TIEABLE_P): DImode is like DFmode.
        !          2277: 
        !          2278:        * tree.c (MAX_HASH_TABLE): 1009 (more prime) instead of 1008.
        !          2279: 
        !          2280:        * decl.c (duplicate_decls): If merged type is OLD's type,
        !          2281:        keep OLD's DECL_SIZE and DECL_SIZE_UNIT.
        !          2282: 
        !          2283:        * gen*.c (xmalloc, xrealloc): Call `fatal' if memory is full.
        !          2284: 
        !          2285:        * reload1.c (choose_reload_targets): If a mode doesn't fit the
        !          2286:        reload register, and the insn is an ASM_OPERANDS, ignore the reload.
        !          2287:        Otherwise, final would crash.
        !          2288: 
        !          2289:        * expmed.c (expand_shift): Two new strategies for lshr on short/char:
        !          2290:        widen and do ashr, or widen and do extzv.
        !          2291: 
        !          2292:        * vax.md (peepholes): Use dead_or_set_p to check for eliminable
        !          2293:        intermediate result, rather than requiring a match with final result.
        !          2294: 
        !          2295:        * local-alloc.c (block_alloc): Testing frame_pointer_needed is
        !          2296:        enough; no need to test FRAME_POINTER_REQUIRED, etc.
        !          2297:        * global-alloc.c (find_reg): Likewise.
        !          2298:        * reload1.c (reload): Likewise for flag_omit_frame_pointer
        !          2299: 
        !          2300:        * jump.c (delete_insn): If not `optimize', don't complain
        !          2301:        about finding an already-deleted insn in the chain.
        !          2302: 
        !          2303: Tue Feb 16 17:14:54 1988  Richard Stallman  (rms at wheaties.ai.mit.edu)
        !          2304: 
        !          2305:        * final.c: Don't define N_SOL and N_SLINE if already defined.
        !          2306: 
        !          2307:        * final.c (output_source_line):
        !          2308:        Typo calling ASM_OUTPUT_SOURCE_FILENAME.
        !          2309: 
        !          2310:        * flow.c (INSN_VOLATILE): fix a typo.
        !          2311: 
        !          2312: Fri Feb 12 16:48:16 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2313: 
        !          2314:        * final.c (final): for `asm' without operands, output literally.
        !          2315: 
        !          2316: Thu Feb 11 12:44:41 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2317: 
        !          2318:        * symout.c (symout_record_fields): Handle nameless fields.
        !          2319:        * symout.c (symout_record_field_names): Likewise.
        !          2320: 
        !          2321:        * typecheck.c (require_complete_type): `void' is a complete type.
        !          2322:        * typecheck.c (build_function_call): Don't complain if result is void.
        !          2323: 
        !          2324:        * tm-hp9k320.h: Change definition of ASM_SPEC to +X, not -X.
        !          2325: 
        !          2326:        * cccp.c (main): Expected object file name for foo.cc is foo.o.
        !          2327: 
        !          2328: Wed Feb 10 16:04:58 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2329: 
        !          2330:        * reload1.c (reload): Initialize `regmask' to zero.
        !          2331:        Class number is in I, not in CLASS, when setting its elements.
        !          2332:        Don't let J+K be too large.
        !          2333: 
        !          2334:        * reload1.c (potential_reload_regs): Make it a `short'
        !          2335:        since that can't be unsigned.
        !          2336: 
        !          2337:        * cccp.c (warning): New function, called like `error'.
        !          2338:        * cccp.c (do_define): Make redefinition just a warning.
        !          2339: 
        !          2340: Tue Feb  9 13:28:00 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2341: 
        !          2342:        * decl.c (grokdeclarator): Don't be fooled by ERROR_MARK as a declspec.
        !          2343: 
        !          2344:        * toplev.c (compile_file): Strip final .c or .co from .sym file name.
        !          2345: 
        !          2346:        * gcc.c: When running `as', specify the .sym file if -gg.
        !          2347: 
        !          2348: Mon Feb  8 11:26:26 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2349: 
        !          2350:        * expmed.c (store_fixed_bit_field): Don't try gen_lowpart on VALUE
        !          2351:        if it's a subreg since it might lose; use convert_to_mode instead.
        !          2352: 
        !          2353:        * tm-hp9k320.h: Define TARGET_MEM_FUNCTIONS.
        !          2354:        * expr.c (emit_block_move, emit_push_insn, clear_storage):
        !          2355:        If TARGET_MEM_FUNCTIONS, generate calls to memcpy and memset
        !          2356:        instead of bcopy and bzero.
        !          2357:        * optabs.c (emit_cmp_insn): Likewise for memcmp vs bcmp.
        !          2358: 
        !          2359:        * stmt.c (expand_goto): New temp var to avoid RT/PC compiler bug.
        !          2360: 
        !          2361: Sun Feb  7 12:20:23 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2362: 
        !          2363:        * flow.c (mark_used_regs, mark_set_regs):
        !          2364:        Handle hard regs in multiword modes: set the bits for each
        !          2365:        distinct register-number that makes up the multiword mode.
        !          2366:        Necessary because function arg registers can inevitably
        !          2367:        live across basic blocks.
        !          2368: 
        !          2369:        * cse.c (canon_hash): Function arg and value registers no longer
        !          2370:        considered volatile, because flow should now handle the code that
        !          2371:        can result from cse'ing them.
        !          2372: 
        !          2373:        * cse.c (make_regs_eqv): Abort if OLD is invalid.
        !          2374:        * cse.c (reg_invalidate): Abort if reg already invalid has eqvs.
        !          2375: 
        !          2376: Sat Feb  6 16:25:32 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2377: 
        !          2378:        * gcc.c (main): Specific error msg if no input files.
        !          2379: 
        !          2380: Fri Feb  5 17:56:00 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2381: 
        !          2382:        * stmt.c (expand_decl, put_var_into_stack, assign_parms):
        !          2383:        Set in_struct on a MEM if the variable is an aggregate or union.
        !          2384:        * varasm.c (assemble_variable): Set in_struct on aggregate vars.
        !          2385: 
        !          2386: Thu Feb  4 11:52:30 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2387: 
        !          2388:        * m68k.md (movsf): Correct two fmove.x to fmove.s.
        !          2389: 
        !          2390:        * expmed.c (extract_fixed_bit_field):
        !          2391:        Must always generate an `and' to mask the bitfield
        !          2392:        unless its width is the same as the output machine mode.
        !          2393: 
        !          2394:        * version 1.18 released.
        !          2395: 
        !          2396: Wed Feb  3 08:41:20 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2397: 
        !          2398:        * fold-const.c (fold): Convert EXPR's operands before returning them.
        !          2399: 
        !          2400: Tue Feb  2 15:35:18 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2401: 
        !          2402:        * reload.c (find_reloads_address_1):
        !          2403: 
        !          2404:        * typecheck.c (default_conversion): Handle COMPOUND_EXPR arrays.
        !          2405: 
        !          2406: Mon Feb  1 18:53:05 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2407: 
        !          2408:        * ns32k.md: operand 0 of all unsigned divide/modulus insns
        !          2409:        is now register_operand.
        !          2410: 
        !          2411:        * stdarg.h: Make va_list be char *, not char *[1].
        !          2412:        Latest draft doesn't say it must be an array type.
        !          2413: 
        !          2414: Sun Jan 31 11:14:07 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2415: 
        !          2416:        * flow.c (find_basic_blocks): Add temp var to avoid Sequent
        !          2417:        compiler bug.
        !          2418: 
        !          2419:        * tm-ns32k.h (GO_IF_LEGITIMATE_ADDRESS): Don't allow pushes or pops
        !          2420:        since there are special insn patterns for them.
        !          2421:        Resubroutinize and add temp vars to make expressions smaller.
        !          2422:        * ns32k.md: Add a few more special stack insns; now there are enough.
        !          2423: 
        !          2424:        * tm-sequent.h: Definitions of DBX_NO_XREFS and DBX_CONTIN_LENGTH.
        !          2425: 
        !          2426:        * reload1.c (choose_reload_targets): Handling of reload_strict_low
        !          2427:        is needed for input reloads as well as output, since a strict_low_part
        !          2428:        operand is normally a read-write operand.
        !          2429: 
        !          2430:        * reload1.c (reload): The mode a reload needs is the wider of
        !          2431:        the input and output modes--just as it is in choose_reload_targets.
        !          2432: 
        !          2433:        * reload.c (find_dummy_reload): If IN and OUT have different widths
        !          2434:        and one of them exceeds a word, don't find any dummy reload.
        !          2435: 
        !          2436:        * toplev.c (compile_file): Allocate enough space for .jump2 filename.
        !          2437: 
        !          2438: Sat Jan 30 10:35:46 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2439: 
        !          2440:        * output-ns32k.c (print_operand_address):
        !          2441:        Print addresses of the form C1+(N*REG+C2) which currently
        !          2442:        are accepted as legitimate memory addresses.
        !          2443: 
        !          2444:        * tm-sequent.h: Simple bugs in PRINT_OPERAND, TARGET_DEFAULT
        !          2445:        and SEQUENT_ADDRESS_BUG.
        !          2446: 
        !          2447:        * gen*.c: Must explicitly exit; returning from `main' fails
        !          2448:        to indicate nonzero status due to bug in Unix.
        !          2449: 
        !          2450:        * parse.y (check_line_number): Ignore entire line of unrecognized
        !          2451:        #-directive; no error if it is `pragma'.
        !          2452: 
        !          2453: Fri Jan 29 06:46:01 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2454: 
        !          2455:        * genrecog.c, genextract.c, genoutput.c: Define bcopy and/or bzero.
        !          2456: 
        !          2457:        * cccp.c (do_define): Make defn->argnames long enough in no-args case.
        !          2458: 
        !          2459:        * reload1.c (reload): Make basic_block_needs 0 until after the
        !          2460:        frame pointer reg is spilled, so that ALL pseudos in it are spilled.
        !          2461: 
        !          2462:        * typecheck.c (truthvalue_conversion):
        !          2463:        Strip a NOP_EXPR only if it extends, not if it truncates.
        !          2464:        (build_unary_op): For TRUTH_NOT_EXPR, call invert_truthvalue
        !          2465:        to simplify.
        !          2466: 
        !          2467:        * Fixes for HPUX support from cph:
        !          2468:        * tm-hp9k320.h: Correct names of floating-point registers.
        !          2469:        Fix typos in ASM_OUTPUT_OPCODE; also convert `fmove' to `fmov'.
        !          2470:        * Makefile (comments for HPUX):
        !          2471:        cph says -Wd,-X isn't needed in CFLAGS, nor -lBSD in CLIB.
        !          2472:        Also that -g can't be used in CFLAGS with HP's pcc.
        !          2473:        * conf-hp9k320.h: New file, like config-m68k.h but with
        !          2474:        #defines for the bstring functions.
        !          2475:        * m68k.md: Add else-clauses to the HPUX_ASM conditionals on cmp insns.
        !          2476:        Reinsert mistakenly-deleted MOTOROLA conditionals around
        !          2477:        some OUTPUT_JUMPs.
        !          2478: 
        !          2479: Thu Jan 28 09:51:41 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2480: 
        !          2481:        * jump.c (jump_back_p): If TARGET is unconditional, return 0.
        !          2482: 
        !          2483: Wed Jan 27 04:18:29 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2484: 
        !          2485:        * combine.c (subst): Simplify (plus (plus x c1) c2).
        !          2486: 
        !          2487:        * expr.c (emit_push_insn): Don't use small-block push-insns for BLKmode
        !          2488:        when one of them would be affected by PUSH_ROUNDING.
        !          2489:        Instead, make all the space and then copy.
        !          2490:        * expr.c (expand_call): Don't apply PUSH_ROUNDING if BLKmode.
        !          2491: 
        !          2492:        * Allow `asm' with operands to be marked volatile.
        !          2493:        * cse.c (canon_hash): Don't record ASM_OPERANDS that has `volatil'.
        !          2494:        * loop.c (invariant_p): ASM_OPERANDS with `volatil' can't be invariant.
        !          2495:        * flow.c (volatile_refs_p): Note ASM_OPERANDS that are volatile.
        !          2496:        * stmt.c (expand_asm_operands): New arg VOL; mark ASM_OPERANDS as vol.
        !          2497:        * typecheck.c (c_expand_asm_operands): New arg VOL.
        !          2498:        * parse.y: allow a TYPE_QUAL after ASM.
        !          2499: 
        !          2500:        * Make cse handle `asm' with operands:
        !          2501:        * cse.c (canon_hash): Hash string operands by contents, not address.
        !          2502:        * cse.c (exp_equiv_p): Compare string operands with strcmp.
        !          2503:        * rtl.c (rtx_equal_p): Compare string operands with strcmp.
        !          2504: 
        !          2505:        * decl.c (init_decl_processing): Once sizetype is set,
        !          2506:        correct the type of the sizes of types already made.
        !          2507: 
        !          2508:        * cccp.c (do_defines): Don't reject #define foo{a}.
        !          2509: 
        !          2510: Tue Jan 26 04:53:16 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2511: 
        !          2512:        * reload.c (find_reloads): Now that `asm' is limited to
        !          2513:        MAX_RECOG_OPERANDS, eliminate dynamic allocation of `constraints'
        !          2514:        and `constraints1', and go back to `recog_operand' instead of
        !          2515:        `operands'.
        !          2516: 
        !          2517:        * typecheck.c (c_expand_asm_operands): New fn to handle `asm' for C.
        !          2518:        Calls expand_asm_operands, and handles output operands that
        !          2519:        the other function cannot handle.
        !          2520: 
        !          2521:        * parse.y: Call that function.
        !          2522: 
        !          2523:        * stmt.c (expand_asm_operands): Error if too many operands.
        !          2524:        #include insn-config.h to get MAX_RECOG_OPERANDS.
        !          2525: 
        !          2526:        * expr.c (expand_assignment): Use store_field to handle
        !          2527:        structure fields and array elements.
        !          2528: 
        !          2529:        * output-m68k.c (output_move_double): PUSHOP and POPOP were swapped.
        !          2530:        Handle insns that push an sp-relative address onto sp;
        !          2531:        these can arise with -fomit-frame-pointer.
        !          2532:        BUG? Do unoffsetable mem refs using sp and fp lose?
        !          2533: 
        !          2534:        * m68k.md (movdi,movdf): Allow unoffsetable mem refs
        !          2535:        only if the other operand is a register.
        !          2536: 
        !          2537:        * m68k.md (zero_extendqisi2): SGS conditionals deleted.
        !          2538:        Supposedly the MOTOROLA syntax works for those addresses.
        !          2539: 
        !          2540:        * typecheck.c (default_conversion):
        !          2541:        If flag_traditional, preserve unsignedness when promoting ints,
        !          2542:        and promote float to double.
        !          2543: 
        !          2544:        * typecheck.c (build_binary_op_nodefault):
        !          2545:        Allow comparisons between pointers and ints.
        !          2546:        If not -traditional, warn about them.
        !          2547: 
        !          2548: Mon Jan 25 02:11:18 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2549: 
        !          2550:        * expmed.c ({extract,store}_split_bit_field):
        !          2551:        Functions {extract,store}_split_reg_bit_field now work for memory
        !          2552:        also, and therefore are renamed.
        !          2553:        * ({extract,store}_fixed_bit_field): Call those fns when a field
        !          2554:        is split across two words.
        !          2555:        Also, preserve the `volatil' bit on memory refs.
        !          2556: 
        !          2557:        * output-m68k.c (output_move_double): Handle nonoffsetable mem refs.
        !          2558:        * m68k.md: Relax constraints on movdi, movdf.
        !          2559: 
        !          2560:        * decl.c (init_decl_processing): Define `int' and `char' first.
        !          2561:        Set `sizetype' explicitly.
        !          2562: 
        !          2563:        * stmt.c (fixup_var_refs_1): May not just return when a SET
        !          2564:        doesn't have VAR as its src or dest.
        !          2565: 
        !          2566:        * varasm.c: Don't include c-tree.h.
        !          2567: 
        !          2568:        * decl.c (build_struct): Split this function into three:
        !          2569:        `xref_tag', `start_struct' and `finish_struct'.
        !          2570:        `xref_tag' subsumes `xref_enum'.
        !          2571: 
        !          2572:        * parse.y (structsp): When parsing `struct foo {...}', define the tag
        !          2573:        as a cross-ref before parsing the components.  Use the three new fns.
        !          2574: 
        !          2575:        * regclass.c (regclass): Recognize new-format ASM_OPERANDS insns
        !          2576:        with `asm_noperands', and scan their operands as usual.
        !          2577: 
        !          2578:        * cse.c: In numerous functions such as canon_hash, rtx_cost, etc.
        !          2579:        that do tree-walk on rtx, handle vectors of subexpressions.
        !          2580: 
        !          2581:        * loop.c (invariant_p): Likewise.
        !          2582: 
        !          2583:        * jump.c (delete_insn): Two bugs:
        !          2584:        If insn already deleted, return the first following nondeleted.
        !          2585:        Deleting a jump's label can delete NEXT.  Make sure return value
        !          2586:        is always the first insn following INSN and not yet deleted.
        !          2587: 
        !          2588: Sun Jan 24 02:27:49 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2589: 
        !          2590:        * rtl.def (ASM_OPERANDS): Change the rtl expression of an
        !          2591:        `asm' with operands so it looks like this for one output operand:
        !          2592:        (set OUTPUT (asm_operands:OUTPUTMODE INSNSTRING OUTPUTCONSTRAINT
        !          2593:                                             0 INPUTS INPUTCONSTRAINTS)).
        !          2594:        and like this for multiple outputs:
        !          2595:        (PARALLEL [
        !          2596:          (set OUTPUT0 (asm_operands:OUTPUTMODE INSNSTRING OUTPUTCONSTRAINT
        !          2597:                                                0 INPUTS INPUTCONSTRAINTS)).
        !          2598:          (set OUTPUT1 (asm_operands:OUTPUTMODE1 INSNSTRING OUTPUTCONSTRAINT1
        !          2599:                                                1 INPUTS INPUTCONSTRAINTS))])
        !          2600: 
        !          2601:        * parse.y: Change parsing of `asm' to distinguish input and output
        !          2602:        operands.  Separate them with colon; separate the string with colon.
        !          2603: 
        !          2604:        * stmt.c (expand_asm_operands): Receive inputs and outputs separately.
        !          2605:        Generate the new rtl format.
        !          2606: 
        !          2607:        * recog.c (asm_noperands, decode_asm_operands): New fns
        !          2608:        for extracting the operands and constraints from these insns.
        !          2609: 
        !          2610:        * final.c (final): Recognize and output the new rtl format
        !          2611:        using those new functions.
        !          2612: 
        !          2613:        * reload.c (find_reloads): Recognize and get constraints
        !          2614:        from the new rtl format using those new functions.
        !          2615:        New variable `operand_modes' holds the machine modes of the
        !          2616:        operands, obtained one way for ASM_OPERANDS insns and another
        !          2617:        for other insns.
        !          2618: 
        !          2619:        * rtl.c (note_stores): Calling convention
        !          2620:        is changed: the first arg FUNCTION now receives as its 2nd arg
        !          2621:        1 if clobbering, 0 if setting.  Used to be the CLOBBER or SET rtx.
        !          2622: 
        !          2623:        * local-alloc.c (reg_is_set): This fn is called from note_stores;
        !          2624:        change its arguments.
        !          2625: 
        !          2626:        * tm-m68k.h (FIXUP_FRAME_POINTER_ADDRESSES):
        !          2627:        Use frame_pointer_rtx to recognize intended frame-pointer refs
        !          2628:        and not recognize pseudo-regs that were allocated to the frame
        !          2629:        pointer register.
        !          2630: 
        !          2631:        * emit-rtl.c: All refs to frame pointer use a single rtx, in
        !          2632:        frame_pointer_rtx.  Likewise arg_pointer_rtx for the arg pointer.
        !          2633:        If they are the same register, these are the same rtx.
        !          2634:        Initialize them in init_emit.
        !          2635:        * rtl.h: Declare these vars.
        !          2636: 
        !          2637:        * stmt.c (assign_parms, assign_stack_local): Use those rtx's.
        !          2638: 
        !          2639: Sat Jan 23 00:32:10 1988  Richard Stallman  (rms at frosted-flakes.ai.mit.edu)
        !          2640: 
        !          2641:        * reload.c (find_reloads): Don't combine_reloads if `&' constraint
        !          2642:        was used.
        !          2643: 
        !          2644:        * parse.y: Parse `asm' with operands.
        !          2645:        * stmt.c (expand_asm_params): New fn: generate an ASM_OPERANDS for
        !          2646:        `asm' with operands.
        !          2647:        * final.c (final): Output an ASM_OPERANDS insn-body.
        !          2648:        * regclass.c (regclass): Ignore ASM_OPERANDS, like ASM_INPUT.
        !          2649: 
        !          2650:        * reload.c (find_reloads): Handle reloading of ASM_OPERANDS.
        !          2651:        The number of operands can no longer be bounded.
        !          2652:        For example we can't always put the operands in recog_operands.
        !          2653: 
        !          2654:        New locals OPERANDS and OPERAND_LOCS point to alloca'd vectors of
        !          2655:        operands and their locations.  New locals CONSTRAINTS and CONSTRAINTS1
        !          2656:        hold alloca'd vectors of constraints.
        !          2657: 
        !          2658:        Unfortunately this isn't enough; every vector with length
        !          2659:        MAX_RECOG_OPERANDS needs to be dynamically allocated.
        !          2660:        Would this be too slow?  For now, a cheap "solution" is to delete
        !          2661:        any insn that has too many operands.
        !          2662: 
        !          2663:        * rtl.def: Delete VOLATILE, UNCHANGING and UNDESCRIBED.
        !          2664:        Add ASM_OPERANDS.
        !          2665: 
        !          2666:        * regclass.c (reg_class_record): Delete ref to UNCHANGING.
        !          2667:        * loop.c (invariant_p):
        !          2668:        * rtl.c (rtx_varies_p):
        !          2669: 
        !          2670:        * cccp.c: Define __VERSION__.
        !          2671: 
        !          2672:        * decl.c (shadow_tag): TYPE_NAME doesn't work to get the tag-name
        !          2673:        of a struct, so use new function lookup_tag_reverse.
        !          2674:        * decl.c (lookup_tag_reverse): Given a type, return its tag name.
        !          2675: 
        !          2676:        * symout.c (symout_source_file): Output one `struct source'.
        !          2677:        * symout.c (symout_lines): Output all of them, and the sourcevector.
        !          2678:        * gdbfiles.h: New file for communication between final.c and symout.c.
        !          2679: 
        !          2680:        * final.c (output_source_line): New arg WRITE_SYMBOLS says write
        !          2681:        new GDB-format linenumber info.  Assigns a filenum to each source
        !          2682:        file name and keeps track of the correspondence.
        !          2683: 
        !          2684:        * cccp.c (do_include): Output the -M info after searching the dirs;
        !          2685:        include the actual dir name.  Don't generate "./" for current dir.
        !          2686: 
        !          2687: Fri Jan 22 04:10:10 1988  Richard Stallman  (rms at frosted-flakes)
        !          2688: 
        !          2689:        * tm-news800.h: Delete override of INDIRECTABLE_1_ADDRESS.
        !          2690:        Output is faster if it doesn't use 32-bit displacements.
        !          2691: 
        !          2692:        * reload.c (combine_reloads): New function.
        !          2693:        If possible, find an input reload
        !          2694:        and an output reload that can be turned into one input-output reload.
        !          2695:        The old output-reload is marked as inoperative: reload_out
        !          2696:        and reload_in both zero.  This is called from find_reloads.
        !          2697: 
        !          2698:        * reload1.c (reload, choose_reload_targets): Ignore inoperative
        !          2699:        reloads.
        !          2700: 
        !          2701:        * Print warnings for variables that could be clobbered by `longjmp'.
        !          2702:        * expr.c (expand_call): Generate a NOTE_INSN_SETJMP whenever
        !          2703:        `setjmp' or `_setjmp' is called.
        !          2704:        * flow.c (propagate_block): When NOTE_INSN_SETJMP is seen,
        !          2705:        record the live regs in `regs_live_at_setjmp'.
        !          2706:        * stmt.c (uninitialized_vars_warning): Warn about vars that have regs
        !          2707:        that are set more than once and are marked in `regs_live_at_setjmp'.
        !          2708:        Works through function `regno_clobbered_by_longjmp'.
        !          2709:        * rtl.h: Define NOTE_INSN_SETJMP.
        !          2710: 
        !          2711:        * genrecog.c (try_merge_2): When enforce_modes, keep all the
        !          2712:        alternatives segregated by modes and keep the modes in numerical order.
        !          2713:        * genrecog.c (write_tree): Make conditions for switch-on-modes
        !          2714:        know what difference enforce_mode makes.
        !          2715: 
        !          2716: Thu Jan 21 00:12:35 1988  Richard Stallman  (rms at frosted-flakes)
        !          2717: 
        !          2718:        * tm-ns32k.h: Use Stein's definitions of PRINT_OPERAND{,_ADDRESS};
        !          2719:        move the Sequent definitions info tm-sequent.h.
        !          2720:        Handle %$ in both old and new PRINT_OPERAND.
        !          2721:        Define CPP_PREDEFINES.
        !          2722: 
        !          2723:        * ns32k.md: Merge some features from Jan Stein's port:
        !          2724:        strict_low_part insns, smart output of booleans with small
        !          2725:        constant args, acbd insns generalized for other increments.
        !          2726:        Use %$ wherever there is an explicit immediate.
        !          2727:        Fix shortcomings of adjsp insns: use adjspd in general,
        !          2728:        and use adjspb in all the cases that allow it.
        !          2729:        Don't bother explicitly clearing CC_REVERSED.
        !          2730:        For tstsf/tstdf, output the floating-zero constants
        !          2731:        using {f,d}const0_rtx.
        !          2732: 
        !          2733:        A problem still remains, which is that the Sequent and the
        !          2734:        other ns32k assembler syntax require different 
        !          2735: 
        !          2736:        * typecheck.c (unary_complex_value): Use correct datatype for
        !          2737:        compound-exprs.
        !          2738: 
        !          2739:        * gen*.c (main): Use obstack_init instead of obstack_begin.
        !          2740: 
        !          2741:        * vax.md: define_peephole for  andl3 x,y,z; extzv z,....,z
        !          2742: 
        !          2743:        * m68k.md (tstsi): Use cmpw instead of cmpl to test addr reg.
        !          2744: 
        !          2745:        * tm-m68k.h: Bugs for 68000 when frame size is over 64k.
        !          2746:        For FUNCTION_PROLOGUE, just subtract from sp instead of fp.
        !          2747:        For FUNCTION_EPILOGUE, must put the size into a0 and then
        !          2748:        all insns must be indexed by a0.  And do this even on 68020.
        !          2749: 
        !          2750:        * tm-isi68.h: Similar changes.
        !          2751:        * tm-news800.h, tm-hp9k320.h: Similar changes.
        !          2752: 
        !          2753: Wed Jan 20 04:38:21 1988  Richard Stallman  (rms at frosted-flakes)
        !          2754: 
        !          2755:        * cccp.c (error_with_line): New function.
        !          2756:        Use it to report the "unterminated whatever" errors.
        !          2757: 
        !          2758:        * typecheck.c (build_unary_op): Recursive call had missing arg.
        !          2759: 
        !          2760:        * m68k.md (movhi): If MOTOROLA, the insn that fetches from a
        !          2761:        case-dispatch table now defines the LI label as .+2.
        !          2762:        * tm-news800.el, tm-hp9k320.h (PRINT_OPERAND_ADDRESS):
        !          2763:        Don't subtract 2 when outputting the address in that insn.
        !          2764: 
        !          2765: Tue Jan 19 00:02:33 1988  Richard Stallman  (rms at frosted-flakes)
        !          2766: 
        !          2767:        * cse.c (cse_basic_block): Abort if more qtys were used than allocated.
        !          2768: 
        !          2769: Mon Jan 18 04:44:28 1988  Richard Stallman  (rms at frosted-flakes)
        !          2770: 
        !          2771:        * cccp.c (special_symbol): tm_mon is origin-0, not origin-1.
        !          2772: 
        !          2773:        * final.c (output_asm_insn): If %LETTER with no digits,
        !          2774:        pass null pointer as the operand.
        !          2775: 
        !          2776:        * output-m68k.c (singlemove_string): Get rid of %e.
        !          2777: 
        !          2778:        * stmt.c (fixup_memory_subreg): Convert (SUBREG (MEM a)) to (MEM a').
        !          2779:        * stmt.c (fixup_var_ref_1): Use that fn for operands of
        !          2780:        SIGN_EXTRACT and ZERO_EXTRACT, since (SUBREG:SI (REG:QI...))
        !          2781:        could have turned into (SUBREG:SI (MEM:QI...)), which is unsafe.
        !          2782: 
        !          2783:        * rtl.c (debug_rtx): Print an rtx on stderr, for debugging.
        !          2784: 
        !          2785: Sun Jan 17 04:37:20 1988  Richard Stallman  (rms at frosted-flakes)
        !          2786: 
        !          2787:        * gcc.c: options -M* treated like -M.
        !          2788: 
        !          2789:        * stmt.c (pushcase): Do nothing if the case index has error_mark type.
        !          2790: 
        !          2791:        * expr.c (expand_increment): Don't use queue for post-inc on memory
        !          2792:        if the add insn requires register args.  (Better code for RISCs.)
        !          2793: 
        !          2794: Sat Jan 16 02:10:22 1988  Richard Stallman  (rms at frosted-flakes)
        !          2795: 
        !          2796:        * ns32k.md: Change register_operand to general_operand.
        !          2797:        * ns32k.md (udivmoddisi4): Use match_dup where required.
        !          2798:        Comment it out because it can't accept two independent output args.
        !          2799: 
        !          2800: Fri Jan 15 00:02:35 1988  Richard Stallman  (rms at frosted-flakes)
        !          2801: 
        !          2802:        * toplev.c: Include sys/time.h only for BSD.  For USG, use time.h.
        !          2803:        This is correct for HPUX; don't know about others.
        !          2804: 
        !          2805:        * gcc.c (execute): Eliminate `union wait'.  Make `status' an int.
        !          2806:        * gcc.c (execute) [USG]: Use fork instead of vfork.
        !          2807: 
        !          2808:        * final.c (output_source_line): Use ASM_OUTPUT_SOURCE_{FILENAME,LINE}
        !          2809:        if they are defined.
        !          2810: 
        !          2811:        * tm-hp9k320.h: New name for tm-hpux.h.
        !          2812:        * tm-hp9k320.h (ASM_OUTPUT_LOCAL): Add 3rd arg to `lcomm' statements.
        !          2813:        * tm-hp9k320.h (ASM_OUTPUT_{DOUBLE,FLOAT}): Use `double' and `float'.
        !          2814:        * tm-hp9k320.h (CALL_USED_REGISTERS): Don't save any 68881 regs.
        !          2815:        * tm-hp9k320.h (CPP_PREDEFINES): different names defined.
        !          2816:        * tm-hp9k320.h (HPUX_ASM, NO_DBX_FORMAT, ASM_SPEC): define these.
        !          2817:        * tm-hp9k320.h (ASM_OUTPUT_OPCODE): Convert `ftst' to `ftest'.
        !          2818:        * tm-hp9k320.h: Define ASM_OUTPUT_SOURCE_{FILENAME,LINE}.
        !          2819: 
        !          2820:        * m68k.md: Rename `hpux' conditionals to `HPUX_ASM'.
        !          2821:        * m68k.md: Reverse `fcmp' args if HPUX_ASM.
        !          2822: 
        !          2823:        * cccp.c (print_deps): 2 means give all files, 1 means only user files.
        !          2824:        * cccp.c (do_include): Support that.
        !          2825:        * cccp.c (main): -MM sets 1, -M alone sets 2.
        !          2826:        * cccp.c (main): Give fatal error if I/O error in writing.
        !          2827: 
        !          2828:        * toplev.c (fatal_io_error): Report I/O error on given filename,
        !          2829:        and exit.
        !          2830: 
        !          2831:        * toplev.c (compile_file): Detect error writing asm_out_file.
        !          2832:        Always put asm file's name in asm_file_name for err msg.
        !          2833:        * symout.c (symout_finish): Detect error writing symfile.
        !          2834:        * symout.c (symout_init): Save filename in symfile_name for err msg.
        !          2835: 
        !          2836:        * gen*.c: Return 1 if ferror (stdout)--in case disk is full.
        !          2837: 
        !          2838:        * local-alloc.c (block_alloc): Don't crash if 1st rtx
        !          2839:        in a PARALLEL is not a SET.
        !          2840: 
        !          2841:        * tm-m68k.h, tm-news800.h (PRINT_OPERAND).  Eliminate code `%e'.
        !          2842:        * m68k.md: Change `%e' to `e' everywhere.
        !          2843:        * tm-hpux.h (ASM_OUTPUT_OPCODE): Output `move' as `mov'.
        !          2844: 
        !          2845:        * tm-m68k.h, tm-news800.h, tm-hpux.h (PRINT_OPERAND):
        !          2846:        New code `%!' is output as the name for the cc register.
        !          2847:        * m68k.md (insns that use andi to ccr): Use `%!' to avoid
        !          2848:        conditionals.
        !          2849: 
        !          2850:        * cse.c: Record in qty_const_insn the insn that stored the
        !          2851:        constant value of a qty.  When making a REG_WAS_0 note,
        !          2852:        store in it the insn that established the value 0.
        !          2853: 
        !          2854:        * vax.md (movsi): When checking a REG_WAS_0 note,
        !          2855:        verify that the insn it points to hasn't been deleted or made a NOTE.
        !          2856: 
        !          2857: Thu Jan 14 00:01:35 1988  Richard Stallman  (rms at frosted-flakes)
        !          2858: 
        !          2859:        * toplev.c: Eliminate error_with_line and warning_with_line.
        !          2860:        * parse.y, decl.c: Change remaining calls to those two.
        !          2861: 
        !          2862:        * tree.c (get_unwidened, get_narrower): To see if a COMPONENT_REF
        !          2863:        is unsigned, look at the FIELD_DECL, not at the COMPONENT_REF.
        !          2864: 
        !          2865:        * rtl.c (print_rtx): Print /v for the `volatil' bit.
        !          2866:        * expr.c (expand_assignment expand_expr): If handling a COMPONENT_REF,
        !          2867:        note whether it is volatile.
        !          2868: 
        !          2869:        * fold-const.c (fold): a call to split_tree missed an argument.
        !          2870: 
        !          2871:        * flow.c (volatile_refs_p): Scan an rtx for volatile mem refs.
        !          2872:        * flow.c (life_analysis): Record in INSN_VOLATILE which insns
        !          2873:        have any volatile mem refs.
        !          2874:        * flow.c (mark_used_regs): Always mark an insn with volatile mem refs.
        !          2875:        Always pass INSN as an arg.  New arg FINAL now says whether
        !          2876:        this is the last time scanning.
        !          2877:        * flow.c (propagate_block): Don't delete insns with volatile mem refs.
        !          2878: 
        !          2879:        * flow.c: Remove all refs to `obey_regdecls'.
        !          2880:        Calling this with -noreg just doesn't help -W.
        !          2881: 
        !          2882: Wed Jan 13 01:13:07 1988  Richard Stallman  (rms at frosted-flakes)
        !          2883: 
        !          2884:        * decl.c (finish_decl): Error if auto var's size isn't known.
        !          2885:        Change type to error_mark_node to avoid crash if the var
        !          2886:        is used in an expression, since it has no DECL_RTL.
        !          2887: 
        !          2888:        * output-m68k.c (output_move_const_single): % -> %% for sprintf.
        !          2889: 
        !          2890:        * parse.y (yylex): Store token_buffer properly after ellipsis.
        !          2891: 
        !          2892:        * decl.c (duplicate_decls): Don't call layout_decl
        !          2893:        for FUNCTION_DECL or TYPE_DECL.
        !          2894: 
        !          2895:        * toplev.c (warning_with_decl): New warning function with decl as arg.
        !          2896:        * (error_with_decl): similar.
        !          2897: 
        !          2898:        * decl.c: Replace most `yylinerror' calls with `error_with_decl'.
        !          2899: 
        !          2900:        * decl.c (build_struct): Reform code to detect erroneous bit-fields.
        !          2901:        All such errors are now detected here.
        !          2902:        Promote bit-fields to int if appropriate.
        !          2903:        If traditional, make all int bit-fields unsigned.
        !          2904:        Set DECL_ALIGN for members that are not bit-fields.
        !          2905: 
        !          2906:        * decl.c (grokfield): Don't set DECL_ALIGN here.
        !          2907: 
        !          2908:        * stor-layout.c (layout_decl): Don't promote the type of a bit-field.
        !          2909:        Use TREE_PACKED to distinguish a bit-field.
        !          2910:        Don't check the width because build_struct did that.
        !          2911: 
        !          2912:        * m68k.md (cmpm): Reject if either operand (address) is a constant.
        !          2913: 
        !          2914: Tue Jan 12 15:11:20 1988  Richard Stallman  (rms at frosted-flakes)
        !          2915: 
        !          2916:        * cse.c (canon_reg): Never replace ANY hard reg from reg_rtx
        !          2917:        because that could alter the machine mode.
        !          2918: 
        !          2919:        * tm-news800.h: Redefine INDIRECTABLE_1_ADDRESS only if MOTOROLA.
        !          2920: 
        !          2921: Mon Jan 11 13:15:45 1988  Richard Stallman  (rms at frosted-flakes)
        !          2922: 
        !          2923:        * jump.c (follow_jumps): If we find a cycle, make it a jump to self.
        !          2924: 
        !          2925:        * cse.c (predecide_loop_entry): Give up if chase more than 10 jumps.
        !          2926: 
        !          2927: Sun Jan 10 14:52:42 1988  Richard Stallman  (rms at frosted-flakes)
        !          2928: 
        !          2929:        * reload1.c (reload): basic_block_needs (new vector) gets 1
        !          2930:        for each basic block that needs a reload.
        !          2931:        * reload1.c (spill_hard_reg): Don't spill pseudos that are
        !          2932:        confined to a basic block which has no need for any reloads.
        !          2933:        * reload1.c (reload): Each cycle that any element of basic_block_needs
        !          2934:        changes from 0 to 1, must re-spill all previously spilled regs.
        !          2935: 
        !          2936:        * regclass.c (record_address_regs):
        !          2937:        Skip the charging of ICOST if it is 0.
        !          2938: 
        !          2939:        * flags.h, toplev.c: New flag -fvolatile.
        !          2940:        * typecheck.c (build_indirect_ref): If flag_volatile,
        !          2941:        every INDIRECT_REF is marked with TREE_THIS_VOLATILE.
        !          2942: 
        !          2943:        * fold-const.c (fold): Test in TRUTH_NOT_EXPR case was backward.
        !          2944:        Also result type is always `int'.
        !          2945: 
        !          2946: Sat Jan  9 04:16:11 1988  Richard Stallman  (rms at rice-krispies)
        !          2947: 
        !          2948:        * flags.h (flag_traditional): New flag.
        !          2949:        * toplev.c: recognize -ftraditional and -traditional.
        !          2950:        * parse.y (yylex): If flag_traditional, don't recognize
        !          2951:        `signed', `const' or `volatile'.
        !          2952: 
        !          2953:        * decl.c (pushdecl): If flag_traditional, any extern decl
        !          2954:        takes effect at top level.
        !          2955: 
        !          2956:        * tree.c (lvalue_or_else): New 2nd arg for use in error message.
        !          2957:        * typecheck.c: All callers pass 2nd arg.
        !          2958: 
        !          2959:        * global-alloc.c: allocno_preferred_reg can specify a preferred
        !          2960:        hard reg for each allocno.  If so, try it first (new call to find_reg).
        !          2961: 
        !          2962:        * global-alloc.c (find_reg): New arg PREFREG specifies reg to try
        !          2963:        first.
        !          2964: 
        !          2965:        * decl.c (build_struct): if :0 bit field at the end, round the
        !          2966:        structure size to multiple of EMPTY_FIELD_BOUNDARY.
        !          2967: 
        !          2968:        * cse.c (make_regs_eqv): Was testing for reg_next_eqv[lastr] == 0
        !          2969:        and should be == -1.
        !          2970: 
        !          2971:        * reload1.c (reload_as_needed): Fix invalid optimization deleting
        !          2972:        the previous store into a pseudo-reg that feeds an input-reload.
        !          2973:        It is not safe because a later insn may look in the pseudo's stack
        !          2974:        slot for the value.  Delete the store only if we can eliminate the
        !          2975:        pseudo entirely or if the current insn stores a new value there.
        !          2976:        Also verify that reload_in[j] is a REG.
        !          2977: 
        !          2978:        * reload1.c (reload_as_needed): When doing an input reload from a
        !          2979:        pseudo that was stored by the previous insn (not as a reload),
        !          2980:        redirect the previous insn into the reload register, if this lets
        !          2981:        us eliminate the pseudo entirely.
        !          2982: 
        !          2983:        * reload1.c (reload_as_needed): In both of the above cases, it's
        !          2984:        impossible to prevent a stack slot since one was already assigned,
        !          2985:        so don't alter reg_n_refs.  Instead, set reg_renumber to record
        !          2986:        that this pseudo did get a hard reg.
        !          2987: 
        !          2988:        * stmt.c: Set `volatil' in pseudo-regs for the user's variables.
        !          2989: 
        !          2990:        * jump.c (delete_insn): Do nothing if insn already deleted.
        !          2991: 
        !          2992:        * tm-sun{2,3}.h: #define STRUCTURE_SIZE_BOUNDARY 2
        !          2993:        for compatibility with Sun PCC.  Note that 4.3 vax PCC
        !          2994:        does not want this.
        !          2995: 
        !          2996:        * fold-const.c: Replace truncate_unsigned with force_fit_type
        !          2997:        which truncates unsigned types and sign-extends signed types.
        !          2998: 
        !          2999:        * expr.c (do_jump): emit_queue before outputting the jump insns
        !          3000:        that use the comparison.
        !          3001: 
        !          3002:        * stmt.c: Error message for any goto that jumps into a
        !          3003:        binding contour that restores a stack level.
        !          3004: 
        !          3005:        TREE_PACKED (label) means label was defined inside
        !          3006:        such a binding contour that is now exited.  Using such a label
        !          3007:        is an error.
        !          3008: 
        !          3009:        TREE_ADDRESSABLE (label) means label was used from a place
        !          3010:        outside all such binding contours.  If this is 1 when
        !          3011:        TREE_PACKED is set to 1, it is an error.
        !          3012: 
        !          3013:        Any other invalid goto must have a fixup.  fixup_gotos detects
        !          3014:        such invalid gotos.  fixup_gotos takes a second arg, which
        !          3015:        is the first insn of the contour now being exited.
        !          3016: 
        !          3017:        * GNU C version 1.17.
        !          3018: 
        !          3019: Local Variables:
        !          3020: mode: indented-text
        !          3021: left-margin: 8
        !          3022: fill-column: 76
        !          3023: version-control: never
        !          3024: End:

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