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Annotation of gcc/ChangeLog, revision 1.1.1.2

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

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