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Diffstat (limited to 'gcc/ChangeLog.0')
| -rw-r--r-- | gcc/ChangeLog.0 | 6671 |
1 files changed, 6671 insertions, 0 deletions
diff --git a/gcc/ChangeLog.0 b/gcc/ChangeLog.0 new file mode 100644 index 00000000000..2e413b1c25f --- /dev/null +++ b/gcc/ChangeLog.0 @@ -0,0 +1,6671 @@ + +Wed Dec 21 02:46:34 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Version 1.32 released. + + * toplev.c (main): Vax pcc enforces goto-less programming + with fatal error. + + * stmt.c (fixup_memory_subreg): New arg INSN says where to emit insns. + (walk_fixup_memory_subreg): Likewise. All callers changed. + +Tue Dec 20 01:26:56 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * c-decl.c (start_function): Don't clear TREE_PERMANENT in fn decl. + Make the result decl a permanent node. + (finish_function): Don't clear DECL_RESULT in an inline function. + (duplicate_decls): Don't lose DECL_RESULT or DECL_SAVED_INSNS + or old decl, when defn is followed by redeclaration. + Likewise DECL_ARGUMENTS and DECL_RESULT_TYPE. + + * stmt.c (expand_function_end): End any sequences left unterminated. + + * cse.c (predecide_loop_entry): If "loop" has no label, do nothing. + + * recog.c (asm_noperands): Now return -1 if not that kind of insn. + All callers changed. + * combine.c (check_asm_operands): Calling changes not quite trivial. + * final.c (final): Likewise. + * reload.c (find_reloads): Likewise. + * recog.c (asm_noperands): Other changes: + Loop computing # of SETs in a PARALLEL was off by 1. + Validate all elts of any PARALLEL, to block invalid combinations. + + * ns32k.md (andsi3, andhi3): Make new CONST_INTs; don't clobber old. + + * integrate.c (copy_rtx_and_substitute): When looking in `parm_map', + if our mode mismatches parm's mode, use change_address to extract part. + On BYTES_BIG_ENDIAN machines, adjust the offset. + +Mon Dec 19 23:50:14 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * cexp.y ('/' and '%' ops): If divide by 0, print error, don't die. + +Sun Dec 18 14:03:02 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * toplev.c (main): Avoid shadowing I in inner block. + + * flow.c (propagate_block): The insn at the end of a libcall + may be dead, but the libcall might still be needed if the + hard return reg is used later. Detect this case. + (libcall_dead_p): New fn used to check that the libcall is dead. + + * output-m68k.c, tm-m68k.h (standard_sun_fpa_constant_p): Fn renamed. + +Sat Dec 17 13:23:51 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stmt.c (expand_end_bindings): error_with_file_and_line => ..._decl. + + * combine.o (try_combine): Accept combination making a valid + asm with operands. + (check_asm_operands): Recognize asm with operands that are valid. + + * loop.c (strength_reduce): Don't accept a reg as a giv + if the reg was made by loop-optimize. + + * stmt.c (balance_case_nodes): A list of 3 always splits in middle. + +Fri Dec 16 17:22:07 1988 Tiemann (rms at sugar-bombs.ai.mit.edu) + + * sparc.md (fetch from constant address): Split into two patterns, + one fixed point and one floating. + (store at constant address): Handle remembered hi-half differently. + Other bug fixes. + (fix_truncsfsi2): Use f1, not f0, as temp. + (fix_truncdfsi2): Don't clear CC_F1_IS_0. + + * output-sparc.c (singlemove_string): Changed handling of case + where op1 is not memory and op0 has varying address. + (output_fp_move_double): Avoid reloading high half address + in the ldd and std cases with constant address. + (make_f0_contain_0): Handle f0 and f1 individually. + + * tm-sparc.h (GO_IF_LEGITIMATE_ADDRESS): CONST is now illegitimate. + + * rtl.c (note_stores): Pass entire SET rtx, not flag, as 2nd arg to FN. + * local-alloc.c (reg_is_set): New type for 2nd arg. + + * Makefile: Comment out cc1plus, since not ready for release. + +Thu Dec 15 16:39:47 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * local-alloc.c (reg_is_set): If a hard reg is clobbered, make it free + before and after the insn. + * stupid.c (stupid_mark_refs): Likewise. + * global-alloc.c (global_conflicts): Likewise. + Use note_stores to call mark_reg_{store,clobber}. + (mark_reg_store): Changed calling conventions + All work done on set/clobbered regs is now done here. + Ignore CLOBBERs. + (mark_reg_clobber): Similar fn, but ignore SETs and handle CLOBBERs. + (regs_set, n_regs_set): New static vars for comm. among the above. + + * stmt.c (expand_asm_operands): call protect_from_queue on operands. + This requires preexpanding the outputs into a vector of rtx's. + + * Makefile (install): cd to $(libdir) before ranlib. + + * c-typeck.c (c_expand_asm_operands): emit_queue at the end. + + * reload.c (find_reloads): Count # alternatives properly for + an asm insn, and check that all operands correspond. + + * loop.c (verify_loop): Reject loops containg setjmps. + * cse.c (cse_main): Don't cse across a call to setjmp. + + * expr.c (expand_expr): Permit any non0 DECL_RTL for a VAR_DECL. + + * stmt.c (balance_case_nodes): Count ranges double when balancing. + +Wed Dec 14 13:50:45 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * final.c (output_addr_const): Output just `-', not `+-'. + + * make-cc1.com: Update filenames changed to `c-'. + * make-cccp.com: Pass needed -D options when compiling cccp.c. + Use /nomap when linking. + + * loop.c (strength_reduce): Paraphrase setting NEW_REG, for Iris cc. + + * output-m68k.c (output_move_const_single): %'s must be doubled twice. + + * loop.c (record_giv): A giv can be replaceable if its uses are + all in the same basic block as its sole setting. + (last_use_this_basic_block): Subroutine to test that. + +Tue Dec 13 13:41:57 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * expr.c (do_store_flag): Allow for COMPARISON to be a const_int. + + * c-decl.c (pushdecl): Warn if type mismatch with another external decl + in a global scope. + + * fixincludes: Fix typo in msg of deleting unchanged file. + + * Makefile (insn-*): Use two-step rules with a separate time-stamp file + to avoid rerunning gen* unless md has changed again. + +Mon Dec 12 13:32:05 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * i386.md (tstsf, tstdf, cmpsf, cmpdf): Use fnstsw, not fstsw. Faster. + + * tm-vax.h (ASM_OUTPUT_REG_POP): Use correct asm syntax for pop insn. + + * combine.c (subst): Handle (subreg (mem)) by making a changed mem. + This avoids producing any (subreg (mem))s except in the special + case they are supposed to be made here. + Also set undo_storage in a couple of cases that forgot to. + + * reload.c (push_reload): When handling (SUBREG (MEM)) for IN, + if there is an OUT, make that a separate reload. + Return its number in `output_reloadnum' + (find_reloads): When pushing matching-reloads, note that the + two operands can have different reload-numbers. + + * tm-3b1.h (ASM_OUTPUT_CASE_END): Test flag on TABLE, not its pattern. + (ASM_OUTPUT_CASE_LABEL): If /i flag set, don't output the dummy entry + since the fetcher-insn will not be off by 2 in this case. + * m68k.md (casesi_2 recognizer): For 3b1 syntax, compensate for that. + +Sun Dec 11 12:51:49 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * genrecog.c (try_merge_2): No longer put all explicit decompositions + before all predicates. Patterns are now tested in the order written. + * vax.md: Move the push-or-move-address patterns to the end. + * m68k.md: Move load-address pattern to end. + Rearrange the special-case movsi patterns. + * ns32k.md: Move special load-reg-17 pattern before movsi. + * i386.md: Move the QI and DI push patterns to logical places. + This should not actually change anything. + + * stmt.c: Add Andy Hitchins's binary-tree case statement code. + (struct case_stmt): case_list field is now a case_node chain. + Replace has_default field with default_label field. + (pushcase, pushcase_range): Build case_list in its new type, + and keep it sorted. + (expand_end_case): Use case_list in its new type. + Count a range of > 1 as two cases, when choosing strategy. + (group_case_nodes, balance_case_nodes): New fns, rearrange case_list. + (node_has_{low,high}_bound, node_is_bounded): New fns test + relationships of values of various case_list tree nodes. + (emit_jump_if_reachable): New fn. + (emit_case_nodes): Emit compares and jumps based on tree of case_list. + + * cccp.c (finclude): Handle nonordinary files (stat doesn't give size). + + * tm-3b1.h (PRINT_OPERAND_ADDRESS): Handle case of breg and no ireg. + +Sat Dec 10 16:30:32 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * sparc.md (movstrsi): Separate define_expand and define_insn; + clobber some pseudos to get temp regs to use in the output. + * output-sparc.c (output_block_move): Use those temp regs, + guaranteed to be free. + + * sparc.md (andcc patterns for bitfields from memory): + Test immed. arg for being in range. + (load DFmode constant): Use %m for output in one case. + * output-sparc.c (singlemove_string, output_move_double): Likewise. + + * output-sparc.c (singlemove_string): New case for mem-to-mem move. + +Fri Dec 9 11:42:15 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stupid.c (stupid_mark_refs): for CLOBBER of a pseudo, + it is born just before this insn and dies just after. + + * tm-vax.h (NOTICE_UPDATE_CC): For aob, sob insns, forget the cc's. + + * basic-block.h (REG_BLOCK_UNKNOWN, REG_BLOCK_GLOBAL): Move defn here. + * local-alloc.c: Use them. + + * c-decl.c (store_parm_decls): Additional explanatory message + for some prototype mismatches. + + * gnulib.c (SItype): New macro used instead of `int' + for SImode operands and values. Definition is `long int'. + +Thu Dec 8 18:45:48 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload.c (operands_match_p): Move the label `slow' so that + it doesn't cause a REG and a SUBREG to be compared wrong. + + * toplev.c (compile_file): Output a label `gcc_compiled.' for GDB. + If new macro ASM_IDENTIFY_GCC is defined, run that instead. + * tm-3b1.h (ASM_IDENTIFY_GCC): Define this as no-op. + +Wed Dec 7 12:20:42 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * i386.md (adddf3): Typo: paren was in a constraint. + + * c-decl.c (grokparms): Avoid duplicate msgs for incomplete type ptrs. + + * gnulib.c: Rename all fns to start with `__'. + * optabs.c, expr.c: Rename all references. + + * gnulib.c (__cmpdi2, __ucmpdi2): New fns. + * optabs.c (emit_cmp_insn): Use them. + + * Makefile (stage*): Ignore errors on the main `mv' (for cc1plus). + Run ranlib if we have to copy gnulib. + + * expmed.c (expand_divmod): Split `label' into several local vars. + + * jump.c (jump_back_p): Do nothing unless cc's were set from integers. + +Tue Dec 6 12:00:21 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * c-parse.y (extend_token_buffer): Use xrealloc, not realloc. + + * integrate.c (output_inline_function): fix args of expand_function_end + (expand_inline_function): Add missing arg to expand_end_bindings. + + * cse.c (cse_insn): Add missing MODE arg to canon_hash. + + * reload1.c (reload_as_needed): Del. extra arg of choose_reload_targets + (reload): Add missing MODE arg to immediate_operand. + + * expmed.c (expand_mult): Delete extra arg to expand_unop. + + * c-typeck.c (default_conversion): + Add missing NOCONVERT arg to build_unary_op. + + * c-decl.c (duplicate_decls, finish_struct): Add missing arg + KNOWN_ALIGMENT to layout_decl. + * stor-layout.c (layout_record): Likewise. + * varasm.c (assemble_variable): Likewise. + + * dbxout.c (dbxout_init): Add missing LOCAL arg to dbxout_symbol. + + * expr.c (clear_storage): Remove excess arg to emit_move_insn. + + * loop.c (consec_sets_invariant_p): Add parens in hairy if-condition. + + * fold-const.c (fold): Typo, missing `case'. + + * cccp.c (main): Typo handling `-I-' option. + + * tm-i386.h (NO_FUNCTION_CSE): Define this; cse is said to slow + things down with less than 7 calls. + + * stmt.c (fixup_var_refs_insn): When scanning the reg-notes, + don't touch other insns they point at. + + * expr.c (do_jump): Use invert_exp, not reverse_condition, + to invert sense of a jump. + * jump.c reverse_condition now static, invert_exp now global. + +Mon Dec 5 10:51:39 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * tm-sun386.h (ASM_FILE_START): In the .file arg, exclude directories. + + * stmt.c (expand_expr_stmt): If -W, warn if stmt has no side effect. + + * cccp.c (monthnames): Capitalize each name. + + * rtl.def: New code MATCH_OPERATOR. + * genconfig.c (walk_insn_part): Handle it. + * genextract.c (walk_rtx): Handle it. + * genpeep.c (match_rtx): Handle it. + * genrecog.c (add_to_sequence): Handle it. + * genemit.c (max_operand_1, gen_exp, gen_expand): Handle it. + * genoutput.c (scan_operands): Handle it. + (insn_n_alternatives): New array in the output. + (struct data): New slots n_alternatives and op_n_alternatives. + (scan_operands, gen_insn, gen_peephole): + Record op_n_alternatives for each operand. + (output_epilogue): Verify that all operands have same # of alternatives + Also output insn_n_alternatives. + + * reload.c (find_reloads): use insn_n_alternatives to control + the loop over all alternatives. + An empty constraint or empty alternative in a constraint + is always satisfied. + * recog.c (constrain_operands): Likewise. + + * c-decl.c (lang_decode_option): For each -f option, recognize a form + with `no-' and a form without, as contraries. + + * toplev.c (main): Decode -f options using a table + so that each option automatically has a `no-' variant. + + * combine.c (try_combine): Give up if I1 or I2 follows a compare insn. + +Sun Dec 4 12:00:36 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * varasm.c (data_section): If flag_shared, use SHARED_SECTION_ASM_OP + if that is defined. + + * cccp.c (include_default): Add /usr/local/include. + + * Makefile (install): Install the makefile. + + * varasm.c (assemble_external): New fn to declare an external. + (assemble_variable): Output nothing for externals. + * c-parse.y (primary => identifier): Call assemble_variable on 1st use. + + * toplev.c (main): Print version info on stderr, not stdout. + * tm-*.h (TARGET_VERSION): Likewise. + + * tm-isi68.h, tm-news800.h: Rename __HAVE_FPU__ to __HAVE_68881__. + + * sparc.md (seq, etc): Entire page rewritten by Tiemann + to avoid incorrect use of PARALLEL. + * output-sparc.c (gen_scc_insn): Corresponding changes. + +Sat Dec 3 00:03:19 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * gcc.c (do_spec_1): %P is an ANSIfied form of %p: + put __ at beg and end of each predefined macro name. + + * tm-sun3.h (CPP_SPEC): Don't define -Dmc68010, etc., if -ansi. + * tm-sun2.h (CPP_SPEC): Likewise. + + * c-decl.c (shadow_tag): Don't complain if declare a new tag + at top level, or if redeclare a tag. + + * c-decl.c (grokparms): Warn if parm points to incomplete type. + (We already err if its own type is incomplete.) + + * stmt.c (fixup_var_refs_insns): Fix any (SUBREG (MEM)) in REG_NOTES. + (walk_fixup_memory_subreg): New subroutine used for this. + + * integrate.c (copy_rtx_and_substitute): Handle MEM refs to the middle + of a stack-parm--at least in the case of reading the parm. + + * rtl.c (rtx_equal_p): REG_FUNCTION_VALUE_P is significant + only until end of reload pass. + * toplev.c (rest_of_compilation): + Control that by setting new var rtx_equal_function_value_matters. + + * c-decl.c (init_decl_processing): Don't declare the builtins + that aren't really implemented. + + * output-sparc.c (output_move_double): "in structure" implies + 8-byte alignment only for DFmode, not for DImode. + + * final.c (output_operand_lossage): Cleaner text for error msg. + No longer need to write text into .s file, now that linenum is correct. + + * c-decl.c (pushdecl): -traditional stops warning + about "declared extern, later static". + + * c-typeck.c (build_indirect_ref): Don't handle flag_volatile here. + * expr.c (expand_expr): Handle it here, in INDIRECT_REF case. + This prevents -fvolatile from causing additional warnings. + + * output-sparc.c (output_load_address): Allow REG+REG for operands[3]. + + * m68k.md (movsi): If we output the label LIn, + set the RTL_INTEGRATED flag in the switch table's pattern. + * tm-3b1.h (ASM_OUTPUT_CASE_END): Define LD%n only if LI%n was output. + + * i386.md (push-and-add pattern): Comment it out. + It's said to result in slower code. + + * i386.md (tstqi, tsthi, tstsi): Output real `test' insn if op is reg. + + * i386.md (push for DI): Allow `oiF' for 2nd operand. + +Fri Dec 2 13:57:35 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * i386.md (movdi): Allow F constraint for 2nd operand. + + * i386.md (push for QI): define pattern to push a QImode + which really uses pushw and therefore really pushes a halfword. + * tm-i386.h (PUSH_ROUNDING): Round up to multiple of 2. + + * gcc.c (do_spec_1): Handle %e, which means report an error. + Use it to prohibit -pg with -fomit-frame-pointer. + + * tree.h (DECL_RESULT_TYPE): New field in FUNCTION_DECL holds the type + of the widened returned value (not nec. the declared return type). + * c-decl.c (start_function): Set DECL_RESULT_TYPE. + * integrate.c (expan_inline_function): Use that, not DECL_RESULT. + +Thu Dec 1 16:44:10 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * cse.c (fold_rtx): When reordering constant args, insist on + manifest constants; regs with known contents won't do. + + * i386.md (mulsi3): Don't use rtx_equal_p to compare regs. + + * expr.c (move_by_pieces_1): Don't call change_address + if address is autoinc, since that may not be memory_address_p. + Subroutine-macro add_offset deleted. + + * optabs.c (bcc_gen_fctn, setcc_gen_fctn): Moved to this file. + (init_optabs): Init those tables here. + * expr.c (init_conditions): Not here. + + * stmt.c (assign_stack_local): Make a list of all stack slots. + * emit-rtl.c (unshare_all_rtl): Unshare all the stack slots. + + * final.c (final): Handle BARRIER with ASM_OUTPUT_ALIGN_CODE. + * tm-ns32k.h (ASM_OUTPUT_ALIGN_CODE): Align to 4-byte bdry. +?? * tm-sequent.h (ASM_OUTPUT_ALIGN_CODE): Override: just 2-byte bdry. + + * tm-m68k.h (PRINT_OPERAND): use new macros to print floats. + (ASM_OUTPUT_FLOAT_OPERAND): New macro. + (ASM_OUTPUT_DOUBLE_OPERAND): New macro. + * tm-sun3.h: Override those macros, to check for infinities. + +Wed Nov 30 06:35:47 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * tm-ns32k.h (FUNCTION_{PRO,EPI}LOGUE): if no frame pointer, + do explicit push or pop insns. + + * tm-genix.h (PRINT_OPERAND): Fix typo `file'. + Extedn decl for paren_base_reg_printed. + (MAIN_FUNCTION_PROLOGUE): Deleted. + (ASM_OUTPUT_EXTERNAL): Defined. + + * c-parse.y (yyerror): Better error msg for unprintable char in token. + (primary => identifier): Set TREE_USED if implicit decl made. + + * Makefile (cleanlinks): New target. + (INSTALL): New variable, has program used for installing files in sys. + + * output-ns32k.c (print_operand_address): If addr is sum of 2 consts, + output ADDR first, then OFFSET. + + * ns32k.md (addsi3): Allow adding const+reg with result in another reg. + + * tm-seq386.h (FUNCTION_PROFILER): Provide overriding definition. + + * tm-hp9k320.h: Alternate ASM_SPEC if using GAS. + Define STANDARD_STARTFILE_PREFIX if using GAS. + (FUNCTION_PROLOGUE): on 68020 for big stack frame use link.l. + + * gcc.c (STANDARD_STARTFILE_PREFIX): New cust. macro replaces `/lib/'. + + * va-sparc.h, va-spur.h: Prefix non-interface identifiers with `__'. + + * optabs.c (init_optabs): Don't set up libcalls for ftrunc_optab + because (1) they aren't supported and (2) they are never used. + + * gnulib.c (__builtin_saveregs): If not sparc, define the symbol anyway + to avoid a warning in ranlib. + +Mon Nov 28 01:46:12 1988 Michael Tiemann (mdt at choctaw) + + * c-parse.y (yylex): Typo, `=' for `==' making wide strings. + + * sparc.md (various places): make sure that all patterns which store + can store using const0_rtx (i.e., make all operands to `st' %rx). + + * output-sparc.c (various places): changed dispatches on SYMBOL_REF + to dispatches on CONSTANT_ADDRESS_P since we now recognize any CONST + (and not just SYMBOL_REFs). Don't recognize special case CONST for + output_block_move. Compiler doesn't have enough information to use + it. + + * stmt.c (expand_fixup): If the control stack is nested within the + nesting stack, then no fixup is needed. Otherwise, compiler must + check for possible fixups between the current nesting stack and the + nesting stack that immediately contains the control stack. + + * stmt.c (expand_function_start): functions which are nested use + DECL_CONTEXT. For these functions, test that their DECL_CONTEXT is + a LET_STMT node. + + * tree.h: declare `build_offset_type'. + +Sun Nov 27 10:34:53 1988 Richard Stallman (mdt at yahi) + + * output-sparc.c (output_move_double): + Don't try to use ldd/std if OP1 is a constant. + * sparc.md (movdi): Allow immediate args moved into general regs. + + * c-decl.c (grokparms): Reject incomplete parm types even if just + declarating, not defining. Change types to error_mark_node + in both the PARM_DECL and the list of types. + + * dbxout.c (dbxout_type): It's not a bug if a RECORD_TYPE + has a typedef as its TYPE_NAME. That happens in C++. + + * Make each `asm' with operands record its source file/line + with reg-notes. It doesn't work to emit a special note before the insn + because the insn can be moved by loop_optimize. + * stmt.c (expand_asm_operands): New args FILENAME, LINE. + Record them in the insn, in reg notes. + * c-typeck.c (c_expand_asm_operands): New args, passed along. + * c-parse.y: Pass those args. + (maybe_type_qual): Line #s for asm stmts emitted like all others. + * rtl.h (REG_ASM_FILE, REG_ASM_LINE): New kinds of reg notes. + * toplev.c (error_for_asm): Get the info from those notes. + + * reload.c (find_reloads): Don't clear BADOP for a reg letter + if the alternative ultimately doesn't allow any regs. + + * reload.c (find_reloads): If an `asm' insn gets an error, + change it to a USE to avoid duplicate error msgs or later trouble. + + * reload.c (find_reloads_address): Reloading a constant address, + specify Pmode as the mode for push_reloads, in case of CONST_INT. + + * expr.c (emit_push_insn): Fix calc. of space needed when PARTIAL > 0. + Both scalar case and BLKmode case needed fixing. + + * sparc.md (load/store constant address): + Moving DF from mem to cpu regs, don't go via %f0. + Don't use std/ltd if alignment is wrong or uncertain. + +Sun Nov 27 10:34:53 1988 Michael Tiemann (mdt at yahi) + + * reload.c (push_reload): Allow VOIDmode for INMODE, OUTMODE; + default the mode from the operand values. + + * sparc.md: remove patterns which generate annulled branch insns. + They are correct, but those insns confuse GDB. + + * tm-sparc.h (GO_IF_LEGITIMATE_ADDRESS): + Treat any constant address like a SYMBOL_REF. + * sparc.md: Check for CONSTANT_ADDRESS_P rather than SYMBOL_REF. + + * sparc.md: Peepholes now accept SYMBOL_REF addresses. + The output routine can now split them properly even as delay insns. + + * print-tree.c (dump): added entry for METHOD_TYPE and + METHOD_CALL_EXPR. Also added entry for WITH_CLEANUP_EXPR. Suggest + that we make first_rtl of WITH_CLEANUP_EXPR 2 instead of 1. + +Sun Nov 27 00:15:33 1988 Michael Tiemann (mdt at yahi) + + * print-tree.c (dump): added entry for OP_IDENTIFIER. + + * tree.c (build_op_identifier): new function. Needed because + `build_nt' expects an "e" node, but OP_IDENTIFIER is an "x" node. + + * store_layout.c (layout_record): use DECL_FIELD_CONTEXT instead of + DECL_CONTEXT. + + * tree.h (DECL_FIELD_CONTEXT): new macro. Points to the type that a + FIELD_DECL is a member of. For C, this is just DECL_CONTEXT. + + * tree.c (build_method_type): typo used "==" to assign basetype to + TYPE_METHOD_BASETYPE with predictably poor results. + +Sat Nov 26 22:55:32 1988 Michael Tiemann (mdt at yahi) + + * output-sparc.c (output_sized_memop): new function to output a load + or store insn based on the size of the operand loaded or stored. + (make_f0_contain_0): use info from condition codes to decide whether + the register %f0 needs to have 0 loaded from memory or not in order + to contain zero. + (gen_scc_insn): new function used by define_expands for + set-on-condition-code insns. + (output_delay_insn): now knows how to handle load and store + scheduling when the load or store operation takes two insns instead + of one. The rewrite is now understands is this: + + sethi %hi(address),%g1 -> sethi %hi(address),%g1 + ld/st [%g1+%lo(address)],%reg -> b target + b target -> ld/st [%g1+%lo(address)],%reg + nop -> ;; gone + + * jump.c (reverse_condition): make this function publicly visible, + now needed in expr.c. + + * output-sparc.c (reg_or_0_operand): new function, returns nonzero + if operand is const0_rtx or a register of specified mode. + (hardreg): deleted. + + * expr.c, stmt.c: fixed random syntax errors. + + * tree.c (build_method_type): now corresponds to defn in tree.def + expr.c (expand_call): removed code to get FUNCTION_TYPE from + METHOD_TYPE. This should probably be looked at harder. + + * tree.def (METHOD_TYPE): Changed definition so that TREE_TYPE (m) + (where m is a METHOD_TYPE) is the type of the return value of the + method, not the FUNCTION_TYPE from which the METHOD_TYPE is derived. + + * Makefile: Changed target of BINDIR from /usr/local to + /usr/local/bin. + +Sat Nov 26 16:29:22 1988 Michael Tiemann (mdt at chickasaw) + + * tm-sparc.h (GO_IF_LEGITIMATE_ADDRESS): Allow any SYMBOL_REF. + (NOTICE_UPDATE_CC): Remember high half of %g1 as a "condition code" + to avoid reloading it if it does not change. + (NOTICE_UPDATE_CC): Test SET_SRC, not SET_DEST, for a CALL rtx. + (PRINT_OPERAND): New code-letter `m' says output operand as an address. + + * toplev.c (flag_syntax_only): New flag variable. + * flags.h: Likewise. + + * toplev.c (error_with_decl): Extra arg, passed to fprintf. + (warning_with_decl): Likewise. + + * tree.c (build_offset_type): New function. + + * tree.h (TYPE_METHOD_BASETYPE): New name for TYPE_METHOD_CLASS. + Uses in tree.c and... renamed. + + * combine.c (SUBST_INT): New macro, for replacing an int. + (subst): Collapse nested SUBREGs even if SUBREG_WORDs are not 0. + + * expr.c (bcc_gen_fctn, setcc_gen_fctn): new tables, + initialized in init_comparisons. + Used in expand_expr, do_jump, do_store_flag + instead of explicit construction of a jump. + + * expr.c (save_noncopied_parts): New function. + + * expr.c (expand_expr): + ARRAY_REF: Special case for array of constants. + WITH_CLEANUP_EXPR: Handle it. + INIT_EXPR: Case deleted. + MODIFY_EXPR: Use save_noncopied_parts. + + * expr.c (expand_call): blkmode_parms_forced can be >0 + even when no stack arg space otherwise needed. + Don't use a hard reg as a target if there are cleanups. + + * stmt.c (struct block): New elt. outer_cleanups. + (struct case): New elt. num_ranges. + (struct fixup): Changed meaning of cleanup_list_list. + Changes in expand_fixup, fixup_gotos. + (expand_fixup): Detect some internal forward-jumps + that need no fixups--for speed. + (fixup_gotos): New arg THISBLOCK. + (expand_expr_stmt): Handle flag_syntax_only. + (use_variable): No longer static. + (use_variable_after): new fn. + (expand_end_bindings): handle cleanups like a stack level. + (expand_decl): Handle a cleanup with no decl. + (move_cleanups_up): Preserve relative order of cleanups. + (expand_anon_union_decl): New fn. + (pushcase): New fast clause if no ranges yet. + (pushcase_range): Turned on. + (expand_function_start): New temp var `fntype'. + Set TREE_USED for a parm we are ignoring. + (expand_function_end): Really use the `filename' arg. + Use use_variable_after for SAVE_EXPR regs. + + * dbxout.c (dbxout_type): Handle OFFSET_TYPE. + + * gnulib.c (__builtin_new, etc.): Support for C++. + + * emit-rtl.c (next_insn, prev_insn): New fns. + +Sat Nov 26 16:29:22 1988 Richard Stallman (mdt at chickasaw) + + * tree.h (TREE_LANG_FLAG_[1234]): New attributes. + (TYPE_METHOD_BASETYPE): New name for TYPE_METHOD_CLASS. + (TYPE_OFFSET_BASETYPE): New macro. + (NUM_TREE_CODE): New macro. + (TYPE_NONCOPIED_PARTS): new field in a type-node. + + * varasm.c (make_decl_rtl): Split out from assemble_variable. + (assemble_variable): No longer creates the rtl. + No longer handles policy of whether to output tentative decl yet. + (output_constant_def): Don't lose if wasn't temp allocation + when this was called. + (output_constant): Handle REFERENCE_EXPR. + + * Makefile (BISONFLAGS): new variable. + (prefix): New variable, used in bindir and libdir. + (C_OBJS, CPLUS_OBJS): New vars, split off from OBJS. + (LIBFUNCS): C++ support functions added. + (CPLUS_TREE_H): New variable. + (cc1plus): New target. + (lang_c, lang_cplus): Combines all targets for one language. + (gplus.info): New target. + (cplus-*.o): New targets. + (realclean): Handle new C++ files and recent renamings. + (install, TAGS): Likewise. + + * print-tree.c (prtypeinfo): Handle TREE_LANG_FLAG_[1-4]. + + * tm-sparc.h (ASM_OUTPUT_DOUBLE): Special case for infinity. + (ASM_OUTPUT_FLOAT): Likewise. + + * gcc.c: Don't define __GNU__. + For .cc files, pass -+ to cpp, and don't handle -ansi. + Use cc1plus as name of compiler for .cc files. + + * stor-layout.c (layout_type): abort if given a LANG_TYPE node. + (layout_union): Complain if union has basetypes or static members. + (layout_record): Handle anonymous union members. + + * tree.def (LANG_TYPE): New tree code for language-specific purposes. + (WITH_CLEANUP_EXPR): New tree code for expressions whose values + need to be cleaned up when they are deallocated. + (OP_IDENTIFIER): New tree code for certain C++ purposes. + + * toplev.c (rest_of_decl_compilation): Call make_var_rtl + before assemble_variable. + +Wed Nov 23 02:15:45 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * xm-sunos4.h: Rename included config files to xm-*. + * xm-*.h: Likewise. + + * fixincludes: Avoid altering args to names other than CTRL + that end in ...CTRL. + If a file isn't actually changed, delete the copy. + +Mon Nov 21 12:48:22 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * loop.c (move_movables): Never move a reg w/ # > old_max_reg. + (strength_reduce): For nonreplaceable giv, put insn to load it + after the insn that used to compute it, in case the latter + is the last of a libcall sequence. + + * stmt.c (expand_function_end): If returning BLKmode, also copy + address where value is returned to the place that GDB will + expect to see it after the return. + + * c-parse.y (readescape): Warn about hex constant out of range + for a target integer. + (yylex): Warn about escape out of range for non-wide char or string. + Use a buffer of ints to read a wide string. + +Sat Nov 19 02:18:02 1988 Richard Stallman (rms at apple-gunkies.ai.mit.edu) + + * Version 1.31 released. + + * sparc.md: Change `K' to `I' in all constraints. + + * loop.c (gen_iv_mult): Handle TARGET==0. + + * c-decl.c (duplicate_decls): Undo last change. + + * c-decl.c (pushdecl): Instead of that change, + save old-decl's file/line before calling duplicate_decls, + and pass them later to warning_with_file_and_line. + * toplev.c (warning_with_file_and_line): New fn. + +Fri Nov 18 13:07:06 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stmt.c (fixup_var_refs_1): (SUBREG (MEM)) was slipping through + in case where a SET was writing in the variable being fixed. + + * recog.c (register_operand, nonmemory_operand, memory_operand): + Changes to handle new var reload_completed: 1 means that + (SUBREG (MEM)) now counts as a mem-ref, since alter_subreg + will make it one. + * toplev.c (rest_of_compilation): Set and clear reload_completed. + + * sparc.md (call patterns): If TARGET_SUN_ASM, and address in reg, + output a jmpl rather than a call. + * tm-sun4os3.h: Like tm-sparc.h but turn on TARGET_SUN_ASM. + + * reload.c (push_reloads): Reinstate handling of reg_equiv_constant. + +Thu Nov 17 09:48:14 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload1.c (constraint_accepts_reg_p): Name changed from + constraint_all_regs_p; new arg is reg we are concerned with, + and condition tested takes some advantage of that reg. + + * gcc.c (main): Rename var `error' to `error_count' for name conflict. + + * emit-rtl.c (emit_note): Output line #s even if no debug info wanted. + (emit_line_note): New fn, does what emit_note did. + (emit_line_note_force): New name for emit_note_force. + * stmt.c, c-parse.y: Call emit_line_note instead of emit_note. + + * c-parse.y (maybe_type_qual): Call emit_note instead of emit_line_note + Now we can find the line # of every `asm' from the RTL. + * toplev.c (error_for_asm): New fn, gets line # by searching for NOTE. + * reload.c (find_reloads): Use error_for_asm. + * reload1.c (choose_reload_targets): Likewise. + * final.c (output_operand_lossage): Likewise. + Variable this_is_asm_operands is now current insn if it's nonzero. + + * loop.c (move_movables): When a reg is moved, update regno_first_uid + and regno_last_uid; say life span includes entire loop. + * Decrement THRESHOLD per reg moved, not per insn moved. + +Wed Nov 16 08:41:32 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * gnulib.c (___builtin_saveregs): New fn, for sparc. + + * tm-sparc.h (GO_IF_LEGITIMATE_ADDRESS): Don't recognize + SYMBOL_REFs, except for the constants pool. + But do recognize REG+REG and SMALLINT+REG. + * sparc.md: New patterns for fetching and storing memory + whose address is symbolic and not "legitimate". + + * sparc.md (movsi): Add `f' to op1 constraint. + New output clause for result in fp reg. + (Floating point fetch patterns): Output sethi insns. + (call_value, related patterns): value-register has `register_operand'. + + * output-sparc.c (hardreg): New function. + (COMPATIBLE): Clause added for n_regs == 2. + (single_insn_src_p): Return 0 for MEM whose address is absolute. + + * tm-genix.h (GO_IF_LEGITIMATE_ADDRESS subroutines): + Redefine, to exclude any possibility of SB-referencing addresses. + + * loop.c (strength_reduce): Can't eliminate a biv if used before + start of the loop. Used before is same as used after, if contained + in another loop. + + * recog.c (asm_noperands, decode_asm_operands): + Handle case of no outputs, but some clobbers. + * stmt.c (expand_asm_operands): Generate right stuff for that case. + + * tm-sun3.h (CPP_SPEC): Don't define __HAVE_68881__ if using fpa. + +Tue Nov 15 00:10:26 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * loop.c (gen_iv_mult): Arg OP0 may not be a constant. + Pay attention to return value of expand_mult. + (eliminate_biv): Call changed. + + * output-m88k.c, output-sparc.c (output_move_double): + Fix typo `optype0' for `optype1'. + + * c-decl.c (duplicate_decls): Don't alter file, line of old decl. + + * c-parse.y (skip_white_space): Don't recognize comments; rely on cpp. + + * rtl.c (rtx_equal_p): Handle vectors. + + * loop.c (scan_loop): Change elts of n_times_set back to positive + for candidates that weren't moved, before doing strength reduction. + + * ns32k.md (movdi, movdf): Use `&' constraint for first operand. + + * reload1.c (reload): Initialize spill_indirect_ok here. + + * config-sun4.h: Recognize `-static' switch. + + * global-alloc.c (set_preference): Avoid using nonsense hard reg #s + that result from adding OFFSET. + + * sdbout.c (sdbout_end_function): Line # in .ef should be relative. + + * final.c (output_source_line): For SDB, don't output negative #s. + + * tm-encore.h (ASM_OUTPUT_LOCAL): Don't ignore SIZE arg. + +Mon Nov 14 11:03:16 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload.c: Don't declare refers_to_regno_p. + + * gcc.c (main): Warn if any input files are for the linker + but the linker is not being run. + + * jump.c (sets_cc0_p): Dumb bug fetching elts of a PARALLEL. + + * local-alloc.c: qty_birth, qty_death elements are now -1, not 0, + when the value is not known. + + * expmed.c (extract_bit_field): Bug computing xbitpos, xoffset + when changing units from bytes to words. + + * loop.c: Rename `times_used' field in `struct movable' to `savings'. + (scan_loop): When scanning the consecutive sets, for each libcall, + increment `savings'--leave `consec'. + When making movable for (SET (REG) 0) which is part of zero-extension, + set `savings' to 1 initially, since only 1 insn will be moved. + And don't let any other reg force that insn. + Reduce initial THRESHOLDs. + (move_movables): Don't add `consec' into `savings' + since the initial `savings' was proportional to `consec'. + Decrement THRESHOLD by 3 (not 2) for each move done. + + * reload1.c (choose_reload_targets): Strip subregs from OLD + before writing the output-reload move-insn. + + * reload1.c (reload): counted_for_groups and counted_for_nongroups + are now file-scope. Update them both when spilling. + (new_spill_reg): No need for counted_for_nongroups as arg. + (choose_reload_targets): Don't use for a group + any spill regs for which counted_for_nongroups is set. + + * dbxout.c (dbxout_symbol): Indirect-symbol case checked erroneously + for PARM_DECL. + +Sun Nov 13 08:13:49 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * cse.c (fold_rtx): Don't alter MULT by -1 if arg mode != result mode. + + * loop.c (move_movables): If moving a CALL_INSN, make a new CALL_INSN. + * emit-rtl.c (emit_call_insn_before): New fn. + + * config-sun4.h (LINK_SPEC): Avoid shared libraries if -g. + + * expr.c (store_one_arg): Stabilize ARG->stack so it doesn't use SP + before computing the arg value. + + * combine.c (use_crosses_set_p): Moving a ref to stack ptr + is always forbidden if machine has push insns, since might cross one. + + * vax.md (movqi): Avoid out-of-range immed ops in mcomb. + + * expmed.c (extract_bit_field): Don't say `extzv' in the + clause for `extv'. + + * emit-rtl.c (copy_rtx_if_shared): Even if a MEM can be shared, + unshare its address from everything outside that MEM. + + * expr.c (expand_builtin): Fix omitted arg to `convert_to_mode'. + + * expr.c (store_expr): In case where will not return TARGET + and must do type conversion, don't fail to store into TARGET. + + * dbxout.c (FORCE_TEXT): New macro used before output `.stabs' + to go to the text section on targets that require it. + (DEBUG_SYMS_TEXT): Target macro which turns on that feature. + + * reload1.c (reload): Index in spill_regs was wrong + when checking counted_for_groups. + (choose_reload_targets): When calling find_equiv_reg looking for + a reload reg, reject all spill regs, even those not in use now. + + * tm-sun386.h, tm-sun386i.h, config-sun386i.h: New files. + + * cccp.c (main): Don't die if no output file arg given. + + * fixincludes: Tell `find' to find only ordinary files. + + * config.gcc: If symlink fails, make a hard link. + +Sat Nov 12 20:43:20 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Makefile (gnulib): Use cp to make the temporary .c files; + less likely to fail than ln. + +Sat Nov 5 12:46:39 1988 Randall Smith (randy at sugar-bombs.ai.mit.edu) + + * tm-m68k.h (HARD_REGNO_MODE_OK): Disallowed d7:a0 as an allowable + pair of registers to hold a double value. This is correct for the + fpa but incorrect for the 68881. It was, however, simpler than + defining a new regclass. + +Tue Oct 25 12:03:49 1988 Randall Smith (randy at gluteus.ai.mit.edu) + + * m68k.md: Added some thoughts (comments) on best method to allow + 68881 code with fpa code. + +Thu Oct 13 14:19:17 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Version 1.30 released. + + * stupid.c (stupid_life_analysis): Init last_call_suid with + largest possible value, not 0. + +Wed Oct 12 04:40:18 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * output-i386.c (output_asm_insn_double_reg_op): Compensate for + assembler bug that interchanges fsub and fsubr. + + * reload1.c (order_regs_for_reload): Undo 29 Sept change. + It breaks the 386. + + * varasm.c (decode_rtx_const): Don't example value->addr + if what was stored in was value->d. + + * toplev.c (set_float_handler): New fn, specify where to jump + on floating exception signal. + * fold-const.c (combine): Use that to handle overflow in arithmetic. + + * c-decl.c (grokdeclarator): Don't clear CONSTP, VOLATILEP + when making an array type. + + * dbxout.c (dbxout_symbol): Ignore VAR_DECLs in memory whose + addresses we can't represent. + + * fold-const.c (fold): don't convert >= to > if both args are constant. + When converting >= to >, don't fail to change CODE. + +Tue Oct 11 04:13:40 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * vax.md (movhi): Error in truncating mcomw, addh3 args to 16 bits. + + * final.c: Better error checking for %-specs in templates. + (output_operand_lossage): new fn to report errors. + (insn_noperands): new var: # operands in current fn. + (this_insn_asm_operands): new var: 1 for `asm', 0 otherwise. + (output_asm_insn): Check for operand # out of range. + (output_asm_label, output_operand): Call new fn to report errors. + + * reload.c (push_reloads): An input reload for (REG N) can match one + for (POST_INC (REG N)) or (PRE_INC (REG N)), since the value + reloaded is the same in any case. + +Mon Oct 10 06:19:05 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * recog.c (next_insns_test_no_inequality): Like next_insn_tests... + but check all insns that follow this one and can use it's cc's. + * output-m68k.c (output_btst): Use that. + + * vax.md (movsf, movdf): Undo last change; movq/movl set the cc wrong. + + * expr.c (expand_call): Set current_function_calls_setjmp if appro. + * stmt.c (setjmp_protect): New fn: move all vars into stack + unless declared `register'. + * c-decl.c (finish_function): Call it if -traditional and setjmp used. + + * cccp.c (main): Open output after the input. + Handle `-o -'. + +Sun Oct 9 00:28:06 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * tm-sun3.h (CPP_SPEC): Define __HAVE_FPA__ if appropriate. + + * c-decl.c (pushdecl): After duplicate_decls, maybe warn about + "declared extern and later static". + + * expmed.c (store_bit_field): In insv case, avoid turning + VALUE into a subreg of a subreg. + + * loop.c (move_movables): When moving a libcall, + un-cse the function address; put it into the call insn. + +Sat Oct 8 01:48:03 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * cse.c (equiv_constant): Subroutine to find the constant equivalent + of a reg. Now handles SUBREGs too. + (fold_rtx, fold_cc0): Use that function. + Don't handle SUBREGs like arithmetic. + + * reload1.c (choose_reload_targets): Don't call reg_overlap_mentioned_p + if arg is 0. + +Fri Oct 7 01:00:19 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * assert.h: Typo declaring __eprintf. + + * config.gcc: New file for making the links. + Fixed bugs for sun-[23]-os4. Added sun-[234] for sunos 3. + Added sequent-i386. + + * emit-rtl.c (gen_rtx): Return const0_rtx for 0 in DImode. + * varasm.c (immed_double_const): Don't be confused by this. + + * expmed.c (negate_rtx): New 1st arg MODE. + * expr.c (push_block): Calls changed. + * m68k.md, ns32k.md, vax.md: Calls changed. + + * c-decl.c (duplicate_decls): Don't discard DECL_BLOCK_SYMTAB_ADDRESS. + + * tree.c (staticp): INDIRECT_REF with constant address is static. + COMPONENT_REF may not be, if component offset isn't constant. + + * c-typeck.c (default_conversion): Converting array to ptr, if array + isn't a VAR_DECL, go through build_unary_op so that COMPONENT_REFs + will be simplified away. + + * ns32k.md (tbitd patterns): op 0 constraint: reject constants. + * ns32k.md (extzv for SImode and HImode): + Use adj_offsetable_operand; plus_constant was the wrong thing. + +Thu Oct 6 00:10:41 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Version 1.29 released. + + * loop.c (scan_loop): Don't think a `return' insn enters the loop. + + * ns32k.md (ashrsi3, etc): New define_expands for right shift. + + * reload1.c (choose_reload_targets): Change in the `force_group' + logic to avoid crashes. + +Wed Oct 5 04:09:19 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * expr.c (expand_expr, MINUS_EXPR): When negating integer op1, + truncate it to its mode. + + * expmed.c (extract_bit_field): SUBREG error check was wrong; + SImode SUBREGs are possible and ok in extzv, extv. + + * tm-ns32k.h (REGISTER_NAMES): Had two excess elements; deleted. + +Mon Oct 3 01:15:51 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * toplev.c (main, compile_file): If no files spec'd, use stdin, stdout. + + * flow.c (propagate_block): When checking for stack-adjust insns, + exclude non-SET patterns. + + * jump.c (jump_optimize): When changing jump=>return to return, + must rerecognize the insn. + + * toplev.c (compile_file): Allow `-' for main input or output filename. + +Sun Oct 2 10:30:09 1988 Richard Stallman (rms at apple-gunkies.ai.mit.edu) + + * final.c (final): NOTICE_UPDATE_CC has extra arg, INSN. + * tm-*.h: Change definitions. + + * stmt.c (optimize_bit_field): Use gen_lowpart to make subregs. + + * stmt.c (assign_parms): Don't obey regdecls in inline function. + Don't lose existing REG_NOTES when adding one. + + * stmt.c (expand_function_start): Make return rtx before + marking parms live. + (expand_function_end): Use use_variable to emit USEs for SAVE_EXPRs. + + * stmt.c (expand_return): Handle TRUTH_AND_EXPR like ANDIF; OR also. + + * stmt.c (expand_end_stmt_expr): Always set TREE_VOLATILE, + sometimes TREE_THIS_VOLATILE. + + * jump.c (delete_insn): When finding PREV, skip deleted insns. + + * varasm.c (output_constant): WORDS_BIG_ENDIAN test was backwards. + + * emit-rtl.c (gen_lowpart): Allow MODE > 1 word if X is same size. + + * final.c (final): Don't delete no-op moves (jump did it if appro.). + + * final.c: Support prescan pass. + (final_start_function): init_recog and CC_STATUS_INIT mvd to `final'. + (final): New arg PRESCAN. Do no output if prescanning. + Don't alter conditionals if PRESCAN < 0 (prescan already done). + If jump becomes no-op, change it to a NOTE. + Remember to free the temp space for ASM_OPERANDS. + + * final.c (final): Altering store-flag must check STORE_FLAG_VALUE. + Don't try to do it if that isn't defined. + Don't try it if condition doesn't test CC0. + (alter_cond): No need to check COND != 0. + Handle CC_Z_IN_NOT_N and CC_Z_IN_N. + (m68k.md): Delete code that handled CC_Z_IN_NOT_N. + + * conditions.h: New flag CC_Z_IN_N. + * tm-*.h: Renumber all CC_... flags to make room. + + * combine.c (use_crosses_set_p): Loop start was 1 off. + + * local-alloc.c (reg_is_set): When a reg is CLOBBERed and dies in + one insn, make it live immediately before and after that insn. + + * global-alloc.c: Hard reg preferences for global pseudos. + Var allocno_preferred_reg deleted; new vars hard_reg_preferences + and regs_someone_prefers. + (global_alloc): Init those vars. Pass hard_reg_preferences elt + to find_reg. + (set_preference): New function makes entries in those vars. + (global_conflicts): new arg to mark_reg_store. Call set_preference. + (find_reg): Last arg now a preferred hard_reg_set. + Scan that set first of all. + (mark_reg_store): New arg is offset for renumbered regno. + But the code to use it is turned off. + + * global_alloc (check_frame_pointer_required): Handle reg_equiv_address + like reg_equiv_mem. Don't try to allocate pseudos with equiv mems + that don't use the frame pointer. + * reload1.c (reload): Call changed. + + * jump.c (sets_cc0_p): Tests whether rtx sets cc0, and whether + it does nothing but set cc0. + (find_cross_jump, delete_jump): Use that fn for these tests. + * loop.c (loop_skip_over): Likewise. + * reload.c (push_reload): Likewise. + + * genoutput.c: Output `const' before the data arrays. + Define it as nothing if not __STDC__. + +Sat Oct 1 02:19:29 1988 Richard Stallman (rms at apple-gunkies.ai.mit.edu) + + * expr.c (store_one_arg): 3rd arg to emit_block_move is in bytes. + + * cse.c (fold_rtx): Handling ZERO_EXTEND or SIGN_EXTEND of constant, + if the arg width is too wide to handle, return safely. + + * combine.c (FAKE_EXTEND_SAFE_P): Don't allow extend to > 1 word. + + * rtl.c (refers_to_regno_p): Moved from reload.c. Not static. + (reg_overlap_mentioned_p): New function, calls the above. + * output-*.c: Use that instead of reg_mentioned_p. + * tm-*.h (NOTICE_UPDATE_CC): Likewise. + * reload.c (push_reload, combine_reloads): Likewise. + * reload1.c (choose_reload_targets): Use it to check earlyclobbers. + + * reload1.c (choose_reload_targets): Elimination of previous + output-reload feeding our input now limited to pseudo-regs. + + * flow.c (life_analysis): Delete any insn copying reg to itself. + (propagate_block): Move update of OLD after special life and death + for CALL_INSNs. + + * vax.md (ashrsi3, ashrdi3, rotrsi3): define_expands to negate + the shift count. + * expmed.c (expand_shift): Eliminate negate-the-shift-count feature. + + * vax.md (and*i3): define_expands which use complement and bit-clear. + * expmed.c (expand_bit_and): Eliminate feature to do that. + This function could be eliminated. + + * expmed.c (store_bit_field): Handle nested subregs. + Allow gen_insv to fail; if it does, delete what we did and then + use store_fixed_bit_field. + (store_fixed_bit_field): Use gen_lowpart to make SUBREGs. + Do that for SUBREGs just as for REGs. + Error check OFFSET must be 0 for REGs. + (store_split_bit_field): Error check OP0 is a SUBREG when expected. + (extract_bit_field): Allow gen_ext{,z}v to fail. + Use gen_lowpart to make subregs. + (expand_shift): If a try fails, delete any insns it made. + + * expmed.c (expand_mult): Use expand_unop to negate. + When adding 2 powers of 2, do serial shifts, not parallel. + Handle absval==1 like other powers of 2. + + * explow.c (force_reg): Don't lose any existing reg notes. + + * stmt.c (expand_start_stmt_expr): Eliminate return value. + (expand_end_stmt_expr): No need for argument. + * c-parse.y (primary): Change calls. + +Fri Sep 30 01:50:22 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * integrate.c (copy_rtx_and_substitute, copy_address): + 'u' case erroneously returned the translated single element. + (copy_address): Special cases for frame-ptr and sums containing it. + MEM and LABEL_REF cases passed wrong arg to copy_rtx_and_substitute. + (copy_rtx_and_substitute): adjust mode of inline_target for context. + + * jump.c (true_regnum): For SUBREG of pseudo, use pseudo's # unchanged. + +Thu Sep 29 02:50:46 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * i386.md (movsi, mov{q,h}i): Use find_reg_note to look for REG_WAS_0. + * vax.md (movsi, movhi): Likewise. + + * varasm.c (decode_rtx_const): Was setting un.addr.base wrong + for a CONST. Should be symbol name, not the SYMBOL_REF. + + * rtl.c (rtx_equal_p): When comparing registers, check + REG_FUNCTION_VALUE_P. If there are `u'-slots in the rtx, ignore them. + + * rtl.c (reg_mentioned_p): Some rtx types were mistakenly treated + as uniquified (various constants). + + * rtl.c (read_rtx): Element type 'S' is string that may be omitted. + * rtl.def (define_insn, define_peephole): Add a last element, type 'S'. + * genoutput.c: Collect these optional last elements and output as + array `insn_machine_info' of structs `INSN_MACHINE_INFO'. + The last must be defined as a macro. + * recog.h (insn_machine_info): Declare it if appropriate. + + * regclass.c (record_address_regs): In PLUS case, look inside SUBREGs. + + * reload1.c (reload): Use reg_equiv_address for REG_EQUIVs with + invalid memory addresses. + When changing pseudos to mem refs at end, do FIX_FRAME_POINTER_ADDRESS + on their addresses. + (alter_reg): Check that with reg_equiv_mem. + (spill_hard_reg): If fp reg, spill regardless of basic_block_needs. + + * reload1.c (order_regs_for_reload): Don't put invalid regs into + potential_reload_regs at all. (They used to go at the end.) + + * reload.c (find_reloads): Store all earlyclobber operand in + reload_earlyclobbers (# in n_earlyclobbers): + * reload1.c (choose_reload_targets): Don't use value of find_equiv_reg + if it matches an earlyclobber operand. + + * reload.c (find_reloads_address for REG): + No need for explicitly excluding hard regs in these tests. + (find_reloads, find_reloads_address_1 for REG): likewise. + + * reload.c (push_reload): Code testing reg_equiv_constant should + be obsolete; add error check to verify this. + + * reload.c (hard_reg_set_here_p): Handle CLOBBERs, SUBREGs, overlap. + (refers_to_regno_p): Handle CLOBBERS. Handle overlap. + New arg ENDREGNO specs end of range to check for; + all callers changed (all in this file). + + * reload.c (find_reloads): SUBREG like REG in alternate recovery + for earlyclobber conflict. + The operands to unswap are those that are supposed to commute. + When operands match, copy the regclass of earlier one for later one. + + * stmt.c (optimize_bit_field): Don't use gen_extend_insn; + use convert_move, then reorder the insns. + * optabs.c (gen_extend_insn): Deleted. + + * optabs.c (emit_cmp_insn): Don't emit queue before recursion. + Don't convert size to SImode for cmpstrqi. + + * optabs.c (expand_binop): Keep any old REG_NOTES when adding them. + Always delete_insns_since if returning failure. + (expand_unop, emit_unop_insn): Keep any old REG_NOTES when adding them. + * spur.md (movhi): likewise. + + * RTL_EXPR_SEQUENCE is now a chain of insns, not a SEQUENCE. + * emit-rtl.c (emit_insns): New fn, emit a chain of insns. + * expr.c (expand_expr): Use that. + Also put const0_rtx in the RTL_EXPR_SEQUENCE (mark RTL_EXPR as output). + * stmt.c (expand_end_stmt_expr): Use get_insns to get the chain. + + * stmt.c (expand_end_stmt_expr): Put the RTL_EXPR on rtl_expr_chain. + (fixup_var_refs): Scan all waiting RTL_EXPRs not yet output. + Also scan all stacked sequences on sequence_stack. + + * genemit.c (gen_expand): Generate calls to {start,end}_sequence. + Use `emit' to handle a PARALLEL. + (FAIL, DONE): Change to fit gen_expand changes. + + * emit-rtl.c (change_address): abort if arg isn't a MEM. + + * emit-rtl.c: Sequences work now by saving and restoring first_insn + and last_insn. So these variables are used even when in a sequence. + emit_to_sequence has been deleted. + (start_sequence, end_sequence): Save and restore first_insn, last_insn. + (get_last_insn, add_insn): Sequences no longer need special treatment. + (delete_insns_since, reorder_insns): likewise. + (push_to_sequence): Set up to emit to a given existing insn chain. + + * emit-rtl.c (copy_rtx_if_shared): Don't copy INSNs. + Insert missing return stmt in MEM case (for MEMs ok to share). + (unshare_all_rtx): Now can copy the REG_NOTES simply. + Copy the LOG_LINKS too. + + * emit-rtl.c (make_safe_from): Treat SUBREG as X like a REG. + (delete_insns_since): Don't lose if FROM is the first insn. + (emit): Declare void, since no useful value. + Call simplejump_p properly. + (restore_reg_data_1): When a reg is an address, do mark_reg_pointer. + + * dbxout.c (dbxout_types): Call dbxout_symbol to do the work. + (dbxout_type_def): Deleted. + (dbxout_symbol): Set TREE_ASM_WRITTEN when a TYPE_DECL is output. + Don't output the same one twice. + + * cse.c (fold_cc0): LABEL_REF is not zero. + + * cse.c (cse_insn): Don't insert src, dest if they are the same place. + + * cse.c (lookup_as_function): Return entire rtx, not just operand. + (cse_insn): Caller changed. Also, copy the result before inserting it. + + * cse.c (fold_rtx): Put constant arg last if commutative op. + Handle idempotents and identities for mult, div, booleans, shifts. + + * cse.c (canon_hash): Parens were missing around shifts in "rotates". + + * c-convert.c (convert_to_integer): Truncate TRUTH_ANDIF_EXPR + like TRUTH_AND_EXPR; OR also. + + * c-typeck.c (build_binary_op_nodefault): Do truthvalue_conversion + for TRUTH_ANDIF, etc. + (build_unary_op): More simplifications for TRUTH_NOT_EXPR; + uses new fn `invert_truthvalue'. + + * recog.c (reg_fits_class_p): New name for reg_renumbered_fits_class_p + since it no longer needs to renumber. Also it now really assumes + arg is a REG. Callers changed. + * reload.c: Callers changed. + + * recog.c (general_operand): (SUBREG (MEM...)) need not alter mode. + (register_operand, nonmemory_operand): (SUBREG (MEM...)) is allowed. + (memory_operand): (SUBREG (MEM...)) is *not* allowed. + (mode_independent_operand): Operand names were backwards! + (No change in effect of this function.) + + * print-tree.c (dump): Some expr nodes contain rtx's. Print as rtx's. + +Wed Sep 28 18:51:12 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload1.c (choose_reload_targets): If a reload wanted a group, + don't allow a single register for it. + +Tue Sep 27 11:43:56 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * final.c (output_addr_const): Handle DImode CONST_DOUBLEs. + * tm-*.h (PRINT_OPERAND): Treat DImode CONST_DOUBLE like a CONST_INT. + + * vax.md (rotldi3): Insn deleted; it doesn't really exist. + + * toplev.c (report_error_function): Also mention the file name, + for parallel makes. New arg FILE; all callers changed. + +Mon Sep 26 15:44:18 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * expmed.c (expand_shift): When using extzv, convert OP1 to SImode. + * c-typeck.c (build_binary_op_nodefault): Convert shift-count + to int regardless of result type. + + * output-spur.c (output_move_double): Fix typo, optype0=>optype1. + + * expr.c (expand_call): Avoid null deref on result of FUNCTION_ARG. + + * tm-i386.h (FUNCTION_PROFILER): Use correct assembler syntax. + +Sun Sep 25 12:13:56 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * fixincludes: Handle some files in netdnet, netdna, vaxif, vaxuba. + + * reload.c (find_reloads): Make no optional reloads if not -O. + + * loop.c (strength_reduce): Can't eliminate a biv if it's used + to compute a DEST_ADDR giv. Only DEST_REG givs are safe. + + * loop.c (general_induction_var): Shift & divide ops are linear + only in 1st operand; don't look for biv or giv in 2nd operand. + + * vax.md (fix_truncdfqi2): Use `%#'. + +Sat Sep 24 00:25:48 1988 Richard Stallman (rms at gluteus.ai.mit.edu) + + * loop.c (n_times_set, n_times_used): Now file-scope; + no longer passed as args to several functions. + + * loop.c (basic_induction_var): Accept reg as source value + only if it's invariant. + (strength_reduce): Benefit calculation and threshold changed. + Check reducibility of givs before trying to reduce them. + Check eliminability of biv before considering the givs; + let this affect the threshold. + (record_giv): New subroutine adds a giv to the chain. + + * ns32k.md (incrementing sp): Use cmpd insns to increment by 4 or 8. + + * integrate.c (expand_inline_function): Rename return_label + to local_return_label; avoid shadowing. + +Fri Sep 23 13:57:52 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * loop.c (loop_skip_over): Put the new label after the note that ends + the loop. + + * loop.c: New function strength_reduce and subroutines. + * toplev.c: New var flag_strength_reduce, set from -fstrength-reduce. + + * vax.md (sob insns): They were broken, with plus in one place + and minus in another. Use plus consistently. + + * rtl.h (REG_LIBCALL, REG_NONNEG): Two new kinds of reg-note. + * optabs.c (expand_binop, expand_unop): Make REG_LIBCALL notes. + * loop.c (scan_loop, move_movables): Move entire library calls. + Use m->set_src to get the expression, in case it's from a REG_EQUAL. + (consec_sets_invariant_p): Likewise. + + * loop.c (scan_loop): Start scan from loop_top, if entry is rearranged. + Watch out for pseudo regs created by strength_reduce; + they can't index regno_last_uid. + (replace_regs): # regs mapped is now an arg. + + * loop.c (count_loop_regs_set): Don't increment n_times_set past 127. + (consec_sets_invariant_p): Reject if N_SETS arg is 127. + + * toplev.c (rest_of_compilation): NREGS arg of loop_optimize deleted. + + * c-decl.c (store_parm_decls): Anything but an IDENTIFIER_NODE + in SPECPARMS indicates a parmlist, not an identifier list. + (get_parm_info): Use only PARM_DECLs when making the list of arg types. + + * combine.c (try_distrib): Boolean ops can't distribute through PLUS. + MULT can distribute through PLUS and only PLUS. + +Thu Sep 22 15:57:41 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * jump.c (jump_optimize): uncond jump to a return becomes a return. + + * integrate.c (copy_parm_decls, copy_decl_tree): Set TREE_USED. + Avoid inevitable "unused" warning for these decls. + + * c-typeck.c (comptypes): When comparing array types, + ignore qualifiers of element type. + + * tm-*.h (ASM_OUTPUT_REG_PUSH, ASM_OUTPUT_REG_POP): Define new macros. + * final.c (final_start_function): Use them to protect around + the call to the profiling function. + * stmt.c (expand_function_start): Set current_function_needs_context + and current_function_returns_struct. + + * stmt.c (expand_null_return_1): If clear_pending_stack_adjust + doesn't clear it, do the adjust now. + * expr.c (clear_pending_stack_adjust): No-op if -finline-functions. + + * cccp.c (macarg1, skip_if_group): Backslash makes next char ordinary. + + * reload.c (find_reloads): Delete code to look for an equiv reg + for a reg being input-reloaded. This isn't safe. + * reload1.c (choose_reload_targets): Do it here. + +Wed Sep 21 00:36:22 1988 Richard Stallman (rms at hobbes.ai.mit.edu) + + * tm-sun3.h (CPP_SPEC): Define it based on TARGET_DEFAULT. + (STARTFILE_SPEC): Likewise. + + * reload1.c (choose_reload_targets): When redirecting prev insn + into this insn's reload-reg, check this doesn't break the prev insn + by giving it a reg it can't accept. Use new fn constraint_all_regs_p. + + * tm-sparc.h (ASM_OUTPUT_LOCAL): Use .reserve, not .common. + + * tree.h (TREE_USED): New attribute macro. + * c-parse.y (primary): Set TREE_USED in ..._DECL nodes. + * toplev.c, flags.h: Define and set warn_unused. + * stmt.c (expand_end_bindings): Warn if any var is unused. + * print-tree.c (prtypeinfo): Print this attribute. + +Tue Sep 20 15:29:01 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * assert.h: `assert' must expand to an expression. + Error message should show arg before expansion, not after. + + * c-decl.c (implicitly_declare): Make decl perm if !warn_implicit + since start_function needs to look inside it in that case. + + * toplev.c (announce_function): If we don't print, don't record we did. + +Mon Sep 19 15:21:11 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * c-parse.y (structsp): If pedantic, warn if comma at end of enumlist. + + * reload.c (find_reloads): Check insn_code_number >= 0 when + looking in insn_operand_strict_low. + + * tm-sun[23].h (CPP_SPEC): Rename __HAVE_FPU__ to __HAVE_68881__ + and put a space after that option. + +Sun Sep 18 01:12:56 1988 Richard Stallman (rms at hobbes.ai.mit.edu) + + * reload.c (find_reloads): Make optional reloads for explicit MEMs. + + * tm-m68k.h (MODES_TIEABLE_P): If no 68881, can tie fixed to floating. + * m68k.md (movdi): Allow F's (can be DImode now). + Don't allow f-regs (experiment). Don't preference x-regs. + (DImode push): Allow y-regs. + (DFmode push): Allow y-regs, not x-regs. + + * reload1.c (modes_equiv_for_class_p): New function. + (reload): Compare multiple modes for reg group with that function. + Allows differing modes in some cases when not tieable. + + * c-parse.y (check_newline): Let ASM_OUTPUT_IDENT override .ident. + * tm-3b1.h (ASM_OUTPUT_IDENT): Define this as no-op. + + * emit-rtl.c (reorder_insns): Update sequence_{first,last}_insn if nec. + (get_last_insn): If in a sequence, return last insn of sequence. + (delete_insns_since): If in a sequence, set sequence_last_insn. + + * spur.md (CONST_DOUBLE load insn): Use & for most dests. + (cond branches): pass additional args to output_compare. + (movdf, movdi): Use & loading reg from mem. + (trunc*): Enable these. + (add): New pattern for adding large immediate operand. + (shifts): A define_expand for each kind of shift, + plus a recognizer which outputs repeated insns if necessary. + (call*): Use r9 as temp, not r2. + + * output-spur.c (output_compare): New args NEG_{EXCHANGE_,}OPCODE. + (singlemove_string): Handle reg as operand 1. + (output_add_large_offset): Fake add insn with large immediate arg. + (big_immediate_operand): Match such an arg. + + * tm-spur.h (FUNCTION_PROLOGUE): Align the stack pointer. + Handle bigger frames. + (TARGET_LONG_JUMP, TARGET_EXPAND_SHIFT): New target flags. + + * va-spur.h: Track position in regs and stack separately. + + * c-decl.c (duplicate_decls): Warn if prototype follows + non-prototype definition. + +Sat Sep 17 14:30:23 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * expr.c (expand_builtin): Avoid crash if arg isn't integer type. + + * c-decl.c (duplicate_decls): Just warn if redeclaring a builtin, + and leave it built in unless it is redefined. + + * vax.md (ashlsi3): Use addl3, moval or movad when useful. + (addsi3): Avoid pushab, movab for constants < 64. + Do use movab when > 64 when operands match. + (mov*i): Use mcom* rather than mneg*. + Use add*3 with two quick immediate args when useful. + (movhi): Don't use movzbw or cvtbw; said to be slow. + + * rtl.h: New macros MEM_VOLATILE_P, MEM_IN_STRUCT_P, + INSN_DELETED_P, REG_USER_VAR_P, RTX_UNCHANGING_P, RTX_INTEGRATED_P, + CONSTANT_POOL_ADDRESS_P. + Most places changed to use them. + +Fri Sep 16 11:50:15 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * jump.c (jump_optimize): Was testing volatil on non-MEMs erroneously + when looking for no-op move insns. + + * cccp.c (handle_directive): Ignore comments between # and directive. + + * integrate.c (copy_rtx_and_substitute): Stack-push memrefs need + to be copied. + + * tm-bsd386.h (ASM_OUTPUT_DOUBLE): Undef previous def. + + * reload1.c (alter_reg): Don't reuse spill_stack_slot + if it isn't big enough for this reg's mode. + + * expr.c (emit_move_insn): After force_const_mem, ensure + mem address is valid. + (move_block_to_reg, move_block_from_reg): Likewise. + + * expr.c (expand_call): Spurious TREE_VALUE on args[i].tree_value. + + * m68k.md (zero_extend*): Require register_operand for operand 0. + + * stdarg.h (va_start): Alternate defn for sparc. + +Thu Sep 15 11:39:06 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * c-parse.y (yylex): When atof gives ERANGE, check for "0.0", etc. + + * assert.h (__assert): Alternative definition for -traditional. + + * output-sparc.c (output_block_move): Initialize xoperands. + + * combine.c (try_combine): Never subst for a reg that is incremented. + + * m68k.md (cmpm pattern): Make the match_operands match memrefs + and check that they are pushes in the extra condition. + This makes reloading handle the pushes properly. + + * expr.c (MOVE_RATIO): Make it 15. Allow overriding it. + +Wed Sep 14 09:50:08 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * c-decl.c (build_enumerator): Use saveable_tree_cons. + + * vax.md (movdf): Use movq when safe. + + * Version 1.28 released. + + * tm-sparc.h (FIRST_PARM_CALLER_OFFSET): Defined. + +Tue Sep 13 00:11:37 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * tree.c (saveable_tree_cons): New function. + * c-decl.c (pushtag): Use it; lists of tags needed for inlining. + (get_parm_info): Likewise. + + * print-tree.c (dump): Handle each kind of statement node individually. + + * integrate.c (copy_decl_tree): Don't pass DECL_RTL through + copy_rtx_and_substitute if it's a memref with constant address. + + * sdbout.c (sdbout_symbol): Don't output garbage when DECL_RTL + has a form we don't understand. + + * reload.c (find_reloads_address_1): Don't reload an autoincrement + if it has a suitable hard reg already. + + * c-typeck.c (process_init_constructor): Error check after digest_init. + + * c-parse.y (is_reserved_word): Now static. + +Mon Sep 12 19:19:28 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * i386.md (all push insns): Use `<' for the constraint, + since a push_operand won't fit an `m' constraint on this machine. + + * expr.c (expand_call): If fn name is `__builtin_alloca', + it may be alloca. This case arises if the user redeclares + `__builtin_alloca'. + +Sun Sep 11 01:47:01 1988 Richard Stallman (rms at gluteus.ai.mit.edu) + + * Eliminate MAX_SETS_PER_INSN. + * cse.c (cse_insn): Combine all the tables and dynamically allocate. + (cse_main): Count the actual number of SETs; don't estimate. + * genconfig.c: Don't calculate MAX_SETS_PER_INSN. + * stmt.c (expand_asm_operands): No limit on # of output operands. + + * expr.c (expand_call): + Store all non-reg parms first, then store all partially-in-reg + parms, then all the (precomputed) wholly-in-reg parms. + Special hair for BLKmode parms which must be passed entirely + in memory; also for BLKmode parms initialized from function calls, + for which it is best to allocate the space before computing value. + Use macro FIRST_PARM_CALLER_OFFSET to handle machines where reg + parms "take up space" on the stack below the stack pointer. + (store_one_arg): Handle case of preallocated stack loc for BLKmode. + Update current_args_size here, not in caller. + +Sat Sep 10 19:58:03 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * output-sparc.c (output_scc_insn): Changed asm templates. + Use common code to emit the move insns and label at the end of fn. + (output_mul_by_constant): Use %g1 as temporary reg. + + * sparc.md (indexed load pattern): Deleted. + (fix_truncdfsi2): Don't ignore value of output_fp_move_double. + (cse'd multiply): Operand 1 predicate is general_operand. + (return peepholes): Conditionalize on ! TARGET_EPILOGUE. + + * tm-sparc.h (INIT_CUMULATIVE_ARGS,FUNCTION_ARG...): + Use partial regs for args that start in regs but won't entirely fit. + + * tm-sparc.h (CONST_COSTS): 0 for args that can be immediate. + (STRUCTURE_SIZE_BOUNDARY): Now 8. + (STRUCT_VALUE_OFFSET): Defined as symbolic name for `64'. + + * expr.c (struct arg_data): New component `stack' says where in the + stack to put a BLKmode arg (if it's nonzero). + (store_one_arg): Handle case where it's nonzero. + (target_for_arg): New fn, precompute stack locn for BLKmode arg. + +Fri Sep 9 01:41:13 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * cse.c (fold_rtx): Misnested ifs screwed SUBREG case. + + * reload.c (find_reloads_toplev): Special case for (SUBREG REG) + where REG is equivalent to a CONST_INT. + (find_reloads): Don't ignore the value returned by find_reloads_toplev. + Treat a (SUBREG constant) like a (SUBREG MEM): set force_reload. + + * reload.c (push_reload): Abort if memory subreg is not + paradoxical; the MEM mode should be narrower than the SUBREG. + + * stmt.c (fixup_var_ref_1): Fixup memory subregs in an insn + copying VAR to or from a register. + + * m68k.md (movdi, movdf): the x-reg constraint accidentally allowed + moving rm to rm with no &. + + * vax.md (call_value): Typo. + + * expr.c (emit_block_move, emit_push_insn): prefer movstrqi to movstrsi + + * m68k.md (FPA multiply): bad opcodes for 3-operand multiply insns. + +Thu Sep 8 18:22:14 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * c-parse.y: Use YYERROR instead of synonym YYFAIL. + BISON VERSIONS PRIOR TO THIS DATE WON'T WORK! + + * c-typeck.c (digest_init): Use TYPE_MAIN_VARIANT of array elt type. + + * tm-sun[23].h (CPP_SPEC, ASM_SPEC): Let -m(c|)680[12]0 control + options for CPP and assembler. + +Wed Sep 7 13:44:59 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * New handling of reloading of PRE_DEC, etc. + Now reload_in is the PRE_DEC, etc, and reload_inc is always positive. + * reload.c (push_reloads): Old code to set reload_inc deleted. + (find_reloads_address_1): Call push_reload the new way. + (find_inc_amount): Value always positive. + * reload1.c (choose_reload_targets): Detect this case. + (inc_for_reload): New fn; does the real work for this case. + * m68k.md (call, call_value): Fn address must be offsetable. + + * combine.c (try_distrib): Reject strange cases such as if + result of PREV1 or PREV2 is used in a memory address in INSN. + + * vax.md (movsf): Generate movl instead of movf. + + * expr.c (expand_call): If have regparms, store all BLKmode args + before all the other args. + (store_one_arg): New subroutine broken out. + + * output-sparc.c (output_block_move): Complete rewrite. + + * sparc.md (cse'd multiply insn): Typo in asm-output code. + +Tue Sep 6 20:05:48 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * c-parse.y (yylex, etc.) Install Schmidt's perfect hash table. + + * gcc.c: handle extension `.cc'. + +Mon Sep 5 12:09:58 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Version 1.27 released. + + * tm-i386.h (PREFERRED_RELOAD_REG): When reloading a QImode, + make sure the class doesn't include %esi or %edi. + * i386.md (movqi): Eliminate only use of the class `x', + for which PREFERRED_RELOAD_REG cannot work. + (In next version, get rid of INDEX_CLASS). + Also use `*' to cause preferencing of Q_REGS. + * tm-m68k.h (PREFERRED_RELOAD_REG): When reloading a QImode, + use DATA_REGS. + + * reload.c (push_reloads): Braino in last change when IN == 0. + + * flow.c (mark_used_regs, mark_set_1): Bug if HARD_REGNO_NREGS + returns 0 for VOIDmode reg (inside a CLOBBER). + + * c-parse.y (asm_operand): Handle `("REGNAME")' as an operand. + * recog.c (decode_asm_operands, asm_noperands): Ignore any CLOBBERs. + * regclass.c (reg_names): Variable now global. + * stmt.c (expand_asm_operands): Generate CLOBBERS when appropriate. + + * stmt.c (assign_parms): Ignore parms that aren't PARM_DECLs. + + * varasm.c (assemble_variable): Do ASM_OUTPUT_EXTERNAL for functions. + + * c-parse.y (yylex): floatflag is now an enum. + Detect invalid use of decimal points (> 1, or in exponent) + and multiple exponent letters. + + * expr.c (expand_call): If inlining fails, set TREE_ADDRESSABLE. + +Sun Sep 4 00:36:30 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * c-decl.c (grokdeclarator): A const array becomes an array of consts. + * c-typeck.c (build_array_ref): Array ref is const if array elts are. + + * output-sparc.c (output_move_double): Change criteria for ldd, std. + (output_fp_move_double): New alternatives avoid ldd, std for + stack refs that aren't aligned. + (output_block_move): Use %g1 as temp reg. + + * sparc.md (floating point load from constant mem address): + Use %g1 as temp reg. Use output_move_double in DF case, not ldd. + (movsf): Asm insn typo in FPreg to FPreg case. + (floatsi{s,d}f2): Constraint changed. + Also new special case pattern in front of it. + (fix_truncdfsi2): Use output_move_double, not ldd. + (addsi3, subsi3): Use %g1 as temp reg. + (cse-optimized multiply): Constraint now `g'; output generalized. + (andsi3, orsi3, xorsi3): Use %g1 as temp reg. + + * reload.c (find_reloads): Force int constants into memory just + like floating ones, if memory is allowed and no regs are. + + * expr.c (expand_call): Don't treat structure_value_addr like a parm + if the first parm would be passed in a register. + Also, write comments for all local vars. + + * tm-386v.h (START_SPEC): Use {g,m}crt1.o, not {g,m}crt0.o. + (LIB_SPEC): Always use crtn.o. + +Sat Sep 3 13:05:50 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * explow.c (plus_constant): Don't put CONST around lone SYMBOL_REF. + + * combine.c (subst): Simplify zero- or sign-extend of a constant. + + * expr.c (expand_expr): for REAL_CST, etc., check for invalid + memory addresses and copy into registers. + + * integrate.c (expand_inline_function): If incoming struct value addr + is in memory, map it like a memory parameter. + + * tm-*.h (FIRST_PARM_OFFSET): Now takes fndecl as argument. + * integrate.c (expand_inline_function): Calc., use and save + this fns value of FIRST_PARM_OFFSET. + (copy_rtx_and_substitute): Use that value. + * stmt.c (assign_parms): Likewise. + + * tm-sparc.h (FIRST_PARM_OFFSET): Make it 64 if value is BLKmode. + (STRUCT_VALUE{,_INCOMING}): Put the value in 64(fp). + + * tm-sparc.h (PRINT_OPERAND_ADDRESS): Print offsets in decimal. + Avoid excess `+' before a negative offset. + + * stmt.c (expand_function_start): Create the return value rtl + before making the tail-recursion loop point. + + * combine.c (gen_lowpart_for_combine): Generate a paradoxical subreg + rather than a wider memref. + + * reload.c (push_reload): Extend last change to case where OUT != 0. + +Fri Sep 2 11:43:20 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stmt.c (fixup_var_refs): Adjust last_parm_insn when deleting insns. + + * expr.c (emit_push_insn): calling memcpy, bump TEMP 2 pointers worth. + +Thu Sep 1 16:39:57 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload1.c (choose_reload_targets): Test for canceled reload + before looking inside reload_out. + + * jump.c (jump_optimize): Bug in last change. + + * m68k.md (return): Pattern disabled; confuses Aug 29 stmt.c change. + * ns32k.md, i386.md: likewise. + + * emit-rtl.c (emit_note_force): New, like emit_note but always do it. + * stmt.c (expand_function_end): Use emit_note_force. + +Wed Aug 31 11:34:08 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload1.c (alter_reg): New arg FROM_REG is hard reg that the pseudo + was spilled from. Works with spill_stack_slot. Callers changed. + Now all pseudos spilled from one hard reg get the same slot. + (reload): Initialize new variable spill_stack_slot. + + * cse.c (cse_insn): Don't insert floating point mems if -ffloat-store. + + * reload.c (find_equiv_reg): Allow no equivs for volatile memrefs. + Also none for floating mem refs if -ffloat-store. + + * output-sparc.c (output_mul_by_constant): make `p' and `log' unsigned. + +Tue Aug 30 13:47:12 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * jump.c (jump_optimize): Ignore other NOTEs while looking for + a NOTE_INSN_FUNCTION_END. + + * integrate.c (save_for_inline): Flush extra call to max_reg_num. + Don't copy NOTEs that are NOTE_INSN_FUNCTION_END. + (copy_for_inline): Don't copy NOTEs that are NOTE_INSN_FUNCTION_END. + + * stmt.c (optimize_bit_field): If bit field is SRC, strip subregs + from the DEST. + + * expmed.c (expand_mult): Special case for -1 as one operand. + +Mon Aug 29 12:14:51 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stmt.c (expand_goto_internal, expand_fixup): New arg LAST_INSN. + (expand_return): Pass that arg in tail-recursive case. + (other callers): Pass 0 for that arg. + (expand_null_return): Handle HAVE_return nonzero w/ FUNCTION_EPILOGUE. + (expand_null_return_1): New fn, has guts of old expand_null_return. + (expand_return): Call expand_null_return_1 to pass LAST_INSN arg. + (expand_return): Handle HAVE_return nonzero w/ FUNCTION_EPILOGUE. + (expand_function_{start,end}): Likewise. + (expand_cleanups): Fix typo in recursive-list case. + (move_cleanups_up): New fn. + + * expr.c (expand_call): Execute cleanups_of_this_call on exiting. + Notice calls to __builtin_new (but don't do anything about them yet). + + * reload.c (push_reload): If reloading a (SUBREG (MEM ...) ...), + really reload just the MEM in the MEM's own mode. + + * sparc.md: Define patterns for insns that set the ccs. + Define set-flag insns. + New patterns for indexed load, and for optimizing signed bit fields. + (mulsi3, umulsi3): Give "r" constraint to operand 0. + Peephole optimizers recognize some cases where delay insns are safe. + Changed patterns for call and return insns as well. + + * output-sparc.c (single_insn_src_p): New fn. + (output_delay_insn): New fn. + + * tm-sparc.h (TARGET_EPILOGUE): New target flag. + (NOTICE_UPDATE_CC): New clause for funny PARALLEL with a REG in it. + + * m68k.md (movqi): Use *'s to ensure preferencing d-regs. + + * c-parse.y (datadef): If traditional, no warning about no specs. + +Sun Aug 28 14:34:33 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * tm-i386.h: Define PROMOTE_PROTOTYPES. + POINTER_BOUNDARY now 32. + + * regclass.c (reg_scan): Compute `max_parallel', max # of sets and + clobbers in any insn in this function. + * global-alloc.c (global_conflicts): Use that, not MAX_SETS_PER_INSN. + + * stmt.c (expand_asm_operands): MAX_SETS_PER_INSN limits # output ops. + + * emit-rtl.c (init_emit_once): Make elt 2 of {f,d}const0_rtx nonzero. + + * c-decl.c (lang_decode_option): Handle -Wwrite-string. + * c-parse.y (combine_strings): If that flag, make array of const char. + + * expr.c (expand_expr): for INTEGER_CST, always use immed_double_const; + never do output_constant_def (it didn't work). + Also heed WORDS_BIG_ENDIAN. + + * varasm.c (output_constant): Handle integer CONST_DOUBLEs. + (output_constant_def): Abort if arg is an INTEGER_CST. + + * emit-rtl.c (gen_rtx): Don't return {f,d}const0_rtx for DImode. + +Sat Aug 27 12:37:23 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * c-decl.c (pushdecl): Global extern decls set TREE_PUBLIC + like local ones. + + * integrate.c (expand_inline_function): Handle parms that were + passed in registers but whose homes are on the stack. + + * varasm.c (force_const_mem): Output ints according to spec'd mode. + ({record,compare}_constant_rtx,const_hash_rtx,decode_rtx_const): + Take mode as argument; pass it along. + + * c-parse.y (read_escape): No warning for `\{' or `\['. + +Fri Aug 26 12:23:07 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stmt.c (fixup_memory_subreg): Typo calculating big-endian adjust. + + * vax.md (call_value): Handle >255 args as in `call'. + +Thu Aug 25 16:00:51 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * jump.c (delete_jump): Don't delete the cc-setter if it has autoinc. + +Wed Aug 24 16:33:37 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * expr.c (expand_expr): For sun with a COND_EXPR, use SUBTARGET + if validate_subtarget says ok. + + * tree.c (build_index_type): make_index_type moved here and renamed. + + * combine.c (move_deaths_2): New function. + (try_distrib): Use that, not move_deaths. + + * tm-sparc.h (SHIFT_COUNT_TRUNCATED, STORE_FLAG_VALUE): Define them. + + * tm-sparc.h: FUNCTION_{PRO,EPI}LOGUE: Save room for ins and + locals to spill to the frame if any ins *or* locals are live. + + * tm-sparc.h (NOTICE_UPDATE_CC): Delete the clause that always + cleared the cc's for unrecognized insns. + + * reload1.c (reload_as_needed): Don't try to use a spill-reg + in a basic block that wasn't spilled: ignore optional reloads. + +Tue Aug 23 09:45:05 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * output-sparc.c (output_scc_insn): New function. + + * expr.c (expand_builtin, alloca): Round result of alloca + up to a multiple of STACK_BYTES. + + * toplev.c (compile_file): Default main_input_filename is cc1 input. + + * tm-i386.h (FUNCTION_BOUNDARY): 32 avoids extra prefetch. + + * i386.md (movdi, movdf): Add `&' where needed in constraints. + +Mon Aug 22 11:57:51 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * symout.c (symout_finish): Allocate typevector after the symout_types. + +Sun Aug 21 16:10:54 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * tm-3b1.h (ASM_FORMAT_PRIVATE_NAME): Use a `_' as well as `%'. + + * expr.c (expand_expr): Typo setting MODE for MAX_EXPR. + + * Makefile (stage*): If ln fails, copy gnulib to stage*. + (realclean): Do `clean' and then some. + (install): new var USER_H specifies headers to copy. + + * c-typeck.c (build_binary_op_nodefault): LT_EXPR, etc. + on ptr vs int failed to set result_type. + (build_conditional_expr): Don't replace nonzero int + with null_pointer_node. + + * combine.c (remove_links, try_distrib): New fns. + (subst): New simplifications for ZERO_EXTEND, SIGN_EXTEND. + (combine_instructions): Call try_distrib. + (FAKE_EXTEND_SAFE_P): Allow SUBREGs. + + * m68k.md (non-FPA pattern for floatsisf2): Typo, had DF for SF. + +Sat Aug 20 12:04:37 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * integrate.c (copy_address): Variant of copy_rtx_and_substitute. + (copy_rtx_and_substitute): Use copy_address for MEM address that + doesn't satisfy memory_address_p. + + * reload.c (find_reloads): If force_reload set, don't set WIN + for a MEM even if `m', `o' or `g' in constraint. + + * i386.md (expendqihi2): Typo in asm template. + + * toplev.c (rest_of_compilation): Call clear_const_double_mem. + * varasm.c (init_const_rtx_hash_table): Don't call it here. + (immed_real_const): Don't record the rtx in the REAL_CST node. + (force_const_double_mem, clear_const_double_mem): Use cc0_rtx, not 0, + as flag for a CONST_DOUBLE not on the chain. + + * cccp.c (handle_directive): If traditional, do scan strings + but accept unterminated ones. + (collect_expansion): -traditional: Don't recognize comments in strings. + Stringify arguments that appear within strings. + (skip_quoted_string): -traditional: Always exit at newline. + (macroexpand): -traditional: Don't put `"'s around stringified arg. + (macarg): Set stringified_length accordingly. + + * c-decl.c (duplicate_decls): Avoid error redeclaring fcn after + implicit decl if -traditional. + + * toplev.c (announce_function, report_error_function): + Change communication logic between these fcns. + + * c-decl.c (lang_decode_options): Handle -Wall here. + * toplev.c (main): not here. + + * tm-bsd386.h: Don't include tm-i386.h--be like tm-att386.h + +Fri Aug 19 11:08:36 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * config-sun4.h: If sparc, include config-sparc.h. + Never include alloca.h. + + * tm-m68k.h (TARGET_SWITCHES): Define `-mc68020', `-mc68000'. + + * c-decl.c (init_decl_processing): If traditional, use signed sizetype. + + * gcc.c (main): Use stderr for printing version. + +Thu Aug 18 14:42:36 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Version 1.26 released. + + * m68k.md (movsi): Constraint change for fpa regs. + + * reload1.c (choose_reload_targets): Clear reg_reloaded_contents + for all regs of a multi-reg group. + + * reload.c (find_equiv_reg): HARD_REGNO_NREGS wants mode, not size. + Check properly for overlap against multiword reload regs. + +Tue Aug 16 14:54:18 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * varasm.c, expr.c (immed_double_const): immed_real_const_2 renamed. + + * tm-i386.h (SFVALUE): Should be `double'. + * tm-i386v.h (SFVALUE): Don't override it. + + * tm-i386.h (ASM_OUTPUT_ASCII): Don't define it. + * tm-att386.h: Definition moved here. + + * tm-bsd386.h: New file, for Sequent. + * tm-seq386.h: New file, for Sequent. + * config-i386.h: New file, for Sequent. + + * expr.c (push_block): Take account of STACK_POINTER_OFFSET. + (expand_call): Therefore need not do so here. + + * optabs.c (expand_fix): Typo if going via DImode. + + * reload1.c (choose_reload_targets): Don't * reload_reg_rtx if 0. + +Mon Aug 15 01:11:49 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * integrate.c (copy_for_inline): Don't try copying 0-length vector. + (copy_rtx_and_substitute): Likewise. + + * m68k.md (andsi3): use clrw instead of andw #0. + + * print-tree.c (walk): Don't omit permanent nodes reach from temps. + + * m68k.md (zero_extend...): Reinstall the old zero-extend insns + without names, so they can help the combiner. + + * expr.c (expand_expr): Don't use hard regs as subtargets. + * combine.c (FAKE_EXTEND_SAFE_P): Always consider MEMs safe. + * reload.c (find_reloads): For (SUBREG (MEM ...)) set force_reload. + + * c-parse.y (redescape): Don't warn for `\('. + + * reload.c (find_reloads_address): #if was backwards. + +Sun Aug 14 16:52:22 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * c-typeck.c (shorten_compare): Change switch to chain of ifs. + + * tm-ns32k.h (PRINT_OPERAND): CONST_DOUBLE contains a double + even if it's SFmode. + (FUNCTION_PROLOGUE): If MAIN_FUNCTION_PROLOGUE defined, run it. + + * cccp.c (file_buf): Rename field `free' to `free_ptr'. + + * Makefile (ALLOCA, MALLOC, LIBDEPS): New variables for easier + customization. Executables depend on LIBDEPS instead of OBSTACK1. + (cccp): Deps and libs now work like the others. + + * output-i386.c (notice_update_cc): Rewritten for clarity. + + * tm-i386.h (OUTPUT_JUMP): If CC_IN_OVERFLOW, abort. + + * recog.c (push_operand): Test for stack_pointer_rtx. + + * integrate.c (copy_rtx_and_substitute): Don't submit push-operands + to `memory_address'--it would lose on machines where pushing is + a special insn, not an addressing mode. + + * output-i386.c (top_dead_p): No more redundancy--that didn't work. + Now one method if optimized, one for call_insns if noopt, one for + other insns if noopt. + (call_top_dead_p): fp_top_dead_p renamed + and only the call-insn clause remains. + + * i386.md (cmpsf, cmpdf): Output was backwards. + (", tstsf, tstdf): Set CC_IN_80387. + (incb pattern): Restrict allowable registers. + (movsf, movdf): Call top_dead_p only when absolutely necessary. + (call_value): Use top_dead_p, not subroutine. + +Sat Aug 13 15:19:23 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stupid.c (stupid_life_analysis): If only 1 reg class, + call stupid_find_reg only once. + + * stmt.c (expand_function_start): + Clear current_function_pretend_args_size. + + * expr.c (store_constructor): If target is hard reg, go via a pseudo. + + * varasm.c (real_constant_chain): Now static in this file. + (force_const_double_mem): Put R on chain if not already on. + (clear_const_double_mem): Set XEXP (,2) to 0; + also clear real_constant_chain and the chain links. + * emit-rtl.c (init_emit_once): Put 0 in XEXP (,2) of {d,f}const0_rtx. + * cse.c (canon_hash): For CONST_DOUBLE, ignore elts other than 0,1. + +Fri Aug 12 11:48:38 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload1.c (order_regs_for_reload): Handle REG_ALLOC_ORDER more spots. + + * global-alloc.c (find_reg): error handling REG_ALLOC_ORDER; + also error skipping regs known to be hopeless. + * local-alloc.c (find_free_reg): error skipping hopeless regs. + * stupid.c (stupid_find_reg): likewise. + + * local-alloc.c (qty_compare_1): typo, had q1 for q2. + + * expr.c (expand_expr): Don't use supplied target when optimizing + arithmetic using a comparison or conditional; that target could be + needed for the result of the comparison. + + * reload1.c (reload): Don't set reg_equiv_constant for hard regs. + + * stupid.c (stupid_life_analysis): Ignore reg R if regno_reg_rtx[R]==0. + + * symout.c (symout_finish): Use perm. links in permanent_fwd_refs. + + * i386.md (movhi, movqi): Check no_labels_between_p. + +Thu Aug 11 10:44:46 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * c-parse.y (yylex): Out-of-range float is just a warning. + + * tm-gnx-v3.h: New file for Genix. + * ns32k.md (movsi, call, call_value): GNX_V3 conditionals. + * tm-ns32k.h (PRINT_OPERAND_ADDRESS): Changes for Genix. + + * ns32k.md (insv patterns): Operand 0 is read-write. + + * i386.md (tstsf, tstdf): Don't push the arg if already in st(0). + + * varasm.c (output_constant_def): If EXP is permanent, the rtl is too. + + * tm-*.h (ASM_OUTPUT_{LOCAL,COMMON}): New 4th arg, rounded size + vs unrounded size. + * varasm.c (assemble_variable): Pass new arg. + * symout.c (symout_init): Likewise. + + * cccp.c (rescan): Don't let char const cross lines. + (skip_quoted_string, macarg1, discard_comments): Likewise. + + * expr.c (expand_expr, VAR_DECL case): handle flag_force_addr. + + * tm-i386v.h (TAREGT_DEFAULT): Assume 80387. + * config-i386v.h (alloca): Use __builtin_alloca under GNU C. + +Wed Aug 10 11:23:06 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload.c (find_reloads): Alternative loses + if it has no regs for a reg operand. + + * tm-sun3.h (STARTFILE_SPEC): Define, for fpa's sake. + * tm-m68k.h: New hard regs, reg classes, reg class letters, + target flag and switch, operand syntax and CC handling for fpa. + * m68k.md: Add fpa insn patterns. + * output-m68k.c (standard_SunFPA_constant_p): New fn. + (output_move_const_{single,double}): Handle fpa regs. + (singlemove_string): Handle fpa regs. + + * stmt.c (fixup_memory_subreg): Result had wrong mode. + + * ns32k.md (insv patterns): Adjust bit-number along with address. + + * sparc.md (negdf2, absdf2): Order of the words was backwards. + + * reload1.c (new_spill_reg): End confusion about meaning of 1st arg. + Arg counted_for_nongroups had wrong type. + + * tm-m68k.h (FUNCTION_{PRO,EPI}LOGUE): Round frame size to word bdry. + +Tue Aug 9 07:53:59 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * tm-i386.h (ASM_OUTPUT_ASCII): Don't lose the sign bit. + + * tm-i386v.h (STARTFILE_SPEC, LIB_SPEC): Use crt1.o, crtn.o. + + * stmt.c (fixup_var_refs_1): fixup all memory subregs. + + * reload1.c (choose_reload_targets): Don't strip paradoxical + subregs from values to be reloaded. + + * cccp.c: Comment out text after #endif. + + * c-parse.y (init): Allow empty braces as init; warn if pedantic. + + * c-decl.c: Move C-specific options from toplev.c. + * c-tree.h: Move their externs from flags.h. + * c-decl.c (lang_decode_option): New fn called by `main'. + * toplev.c (sorry, really_sorry): New error reporting fns. + * c-decl.c (language_string): New var, name of this language. + + * c-parse.y: Don't include flags.h. + * dbxout.c: Do include it. + + * dbxout.c (dbxout_type): Handle function fields and static fields + and basetypes. Handle METHOD_TYPE and REFERENCE_TYPE. + Abort on unexpected tree code. + (dbxout_args): New fn to output prototype arg types. + (everywhere): Use IDENTIFIER_LENGTH instead of strlen. + (dbxout_type_name): Cleanup; avoid strlen. + + * local-alloc.c (reg_is_set): Don't call {post_,}mark_life for pseudos. + + * tree.h (TYPE_BASECLASSES): New field in type nodes. + + * ns32k.md (insv patterns): Was adjusting the address wrong. + + * c-decl.c (grokdeclarator): Just a warning for inline varargs fn. + +Mon Aug 8 08:16:46 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * varasm.c (immed_real_const_2): Guts of creating a CONST_DOUBLE. + * expr.c (expand_expr): Use that for 64-bit int constants. + + * loop.c (invariant_p): Don't check x->unchanging; it's not safe. + + * c-typeck.c (build_indirect_ref): Handle flag_volatile here + so that it propagates to component_refs. + * expr.c (expand_expr): No need to handle it here. + + * integrate.c (save_for_inline, expand_inline_function): + Set up insn_map to record mapping of old uids to copied insns. + (copy_for_inline, copy_rtx_and_substitute): Map 'u' refs via insn_map. + + * emit-rtl (emit_label, emit_barrier): Return what was emitted. + + * sdbout.c (sdbout_filename): Split off from sdbout_init. + * tm-encore.h, tm-3b1.h, tm-vaxv.h, tm-att386.h (ASM_FILE_START): + Call sdbout_filename. + + * toplev.c: Better messages for invalid options. + + * tm-m68k.h (PRINT_OPERAND_ADDRESS): Handle labelref+basereg. + + * tm-3b1.h (PUT_SDB_DIM): Override sdbout's definition. + (ASM_FORMAT_PRIVATE_NAME): Override tm-hp...s definition. + (PUT_SDB_PLAIN_DEF): Prepend `~' to specified name. + (SDB_GENERATE_FAKE): Prepend `~'. + + * gcc.c: Include config.h before obstack.h. + +Sun Aug 7 11:17:56 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stor-layout.c (layout_decl): Do nothing with CONST_DECL. + Treat FRIEND_DECLs like variables. + (layout_record): Handle VAR_DECLs and FUNCTION_DECLs in the fieldlist. + Handle basetypes (almost like fields). + (layout_type): Handle REFERENCE_TYPE and METHOD_TYPE. + + * tree.c (temp_tree_cons): New fn. + (array_type_nelts, simple_cst_equal): New fns. + (lvalue_p): CALL_EXPR is an lvalue if it returns REFERENCE_TYPE. + () Manage TYPE_REFERENCE_TO. + (TYPE_HASH_SIZE): Bigger. + (type_list_equal): Compare the TREE_PURPOSE fields. + (build_reference_type, build_method_type): New fns. + + * stmt.c (block_stack): Add field `cleanups' to each element. + (expand_{start,end}_bindings, expand_decl): Update that field. + (stack_block_stack): Now includes blocks that have cleanups. + (goto_fixup_chain): Add field `cleanup_list_list'. + (expand_goto_internal): Execute cleanups for blocks being exited. + (expand_fixup): Make a fixup if any block has cleanups. + (fixup_gotos): New args CLEANUPS and DONT_JUMP_IN. + Execute cleanups for blocks being exited, or add to cleanup_list_list. + (expand_end_bindings): New arg DONT_JUMP_IN. Execute any cleanups. + (expand_decl): New arg CLEANUP. + (expand_cleanups, fixup_cleanups): New functions. + * c-decl.c: Calls to expand_decl pass new arg. + * c-parse.y: Calls to expand_end_bindings pass new arg. + + * stmt.c (expand_return): Handle INIT_EXPR, or bare RESULT_DECL. + + * stmt.c (case_stack): Add field `has_default' to each element. + (pushcase,expand_end_case): Maintain and use that field. + + * stmt.c (pushcase): Handle RANGE_EXPR cases. + (pushcase_range): Create RANGE_EXPR cases. + + * final.c (final): Always pass 3 args to ASM_OUTPUT_CASE_END. + * tm-3b1.h: Delete offending spaces. + +Fri Aug 5 16:17:16 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * integrate.c (copy_rtx_and_substitute): Don't make fp+reg+const + without an intermediate temporary reg. + + * print-tree.c (dump): Don't print an identifier's chain. + + * toplev.c (compile_file): Treat `.i' suffix like `.co'. + + * gcc.c: New config macro CC1_SPEC: extra switches for cc1. + Make a new spec for `.i' files. + + * c-decl.c (pushdecl, finish_decl): Delete duplicate tests. + + * varargs.h: Maybe include va-sparc.h or va-spur.h. + * va-sparc.h: New file. + * va-spur.h: renamed file. + + * tree.h ({TYPE,DECL}_LANG_SPECIFIC): Types and decls can point to + language-specific structures containing other info. + * print-tree.c (dump): Hooks for printing the language-specific + data in types and decls. + +Thu Aug 4 08:54:30 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * tree.def: Add some tree codes for C++. + + * Rename files: parse.[yh] -> c-parse.[yh], decl.c -> c-decl.c, + typecheck.c -> c-typeck.c. + Part of tree.c split out to c-convert.c. + + * expr.c (push_block): No longer static. + (expand_expr): Handle REFERENCE_EXPR and INIT_EXPR. + (expand_call): Turn a METHOD_TYPE to a FUNCTION_TYPE. + This is probably not all that is required. + + * parse.y (yylex): Use p->rid to check for `signed' and `inline'. + + * tm-sparc.h (ASM_OUTPUT_SOURCE_LINE): typo. + + * sparc.md: Add a pattern for andcc. + (cmpsf): Clobber reg 32 in DFmode. + (branches): There are no unsigned floating branches; abort. + (bgt): Correct name of floating variant. + (mov?i): Load small constants via mov. + (movdf for constants): Use mov, not add, to move regs. + (movsf, floatsi*, fix*): Simplify reg-to-reg-via-mem move generation. + (trunc*): Use mov, not or, to move regs. + (negsi2, one_cmplsi2): Avoid "neg" and "not" assembler syntax. + (call...): Generate "call" insns; handle #-reg-parms value. + * Define some peepholes for return insns. + + * tm-sparc.h (TARGET_SUN_ASM): New target flag. + (TARGET_DEFAULT): Now 1. + (FRAME_POINTER_REQUIRED): Now 1. + (STARTING_FRAME_OFFSET): Now -16. + (LEGITIMATE_CONSTANT_P): Only CONST_DOUBLEs fail. + (FUNCTION_{PROLOGUE,EPILOGUE}): Rewritten. + + * output-sparc.c (small_int): Test for int that mov can load. + (singlemove_string): Use mov, not add. + (output_move_double): Changes for overlap and for use of ldd, std. + (output_fp_move_double): Use ldd, std when safe. + (make_f0_contain_0): Simplify. + + * integrate.c (expand_inline_function): Some special CALL_INSN + handling no longer needed due to REG_FUNCTION_VALUE_P. + + * m68k.md (movqi): Constraints allow moving areg to areg. + +Wed Aug 3 08:29:31 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Version 1.25 released. + + * integrate.c (expand_inline_function): Don't let MEM be inline_target. + +Tue Aug 2 09:13:37 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * integrate.c (INTEGRATE_THRESHOLD): New macro, default dfn here. + (function_cannot_inline_p): Use it. + + * rtl.h (REG_FUNCTION_VALUE_P): New macro. + * stmt.c (expand_function_start): Set that flag in the return reg. + * integrate.c (expand_inline_function, copy_rtx_and_substitute): + Test that flag to test for the return value. + * expmed.c (expand_fixed_bit_field, expand_mult, expand_divmod): ditto. + FUNCTION_VALUE_OUTGOING_REGNO_P no longer needed. + +Mon Aug 1 02:46:08 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * integrate.c (copy_rtx_and_substitute): If NO_FUNCTION_CSE, + don't break out constant fcn addresses here. + + * expmed.c (expand_fixed_bit_field): Tests of FUNCTION_VALUE_REGNO_P + were backwards. + +Sun Jul 31 13:10:07 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * recog.c (indirect_operand): New function. + + * output-i386.c (print_operand): define %*. eliminate %s. + (fp_top_dead_p): In nonopt case, skip stack-adjusts while looking + for the insn that uses the function value. + + * varasm.c (text_section, data_section): New functions. + Replaced explicit printfs elsewhere with calls to them. + * final.c (final_start_function): Use these fns. + * sdbout.c (sdbout_one_type): Use text_section. + * tm-att386.h (ASM_OUTPUT_LOCAL): Use data_section. + + * expr.c (prepare_call_address): Don't pass const via reg if no -O. + + * tm-sparc.h (FUNCTION_{PROLOGUE,EPILOGUE}) Round the size of saved + registers. Fix bug counting saved registers. + + * tm-sparc.h (ASM_OUTPUT_SOURCE_LINE): Define this macro. + + * tm-sparc.h (DEFAULT_SIGNED_CHAR): Now 1. + + * expr.c (expand_builtin, alloca case): Adding stack offset needs + special code if TARGET is a MEM. + + * dbxout.c (dbxout_init): Define Ltext: after the reference to it. + + * tm-3b1.h (ASM_OUTPUT_CASE_LABEL): `short 0' triggers assembler bug; + `short L%nn-L%nn' supposedly works. + +Sat Jul 30 00:25:52 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * sparc.md (floatsidf2): Minor change in output. + (fix_trunc{sf,df}si2): Similar. + + * output-sparc.c (output_fp_move_double): Minor change in output. + + * stmt.c (assign_parms): Don't count stack space for struct value + address if the function does not have one. + + * sdbout.c: Output .dim's and total size for arrays. + Detect bit-fields properly. + Changed handling of structure tags. + + * reload1.c (new_spill_reg): counted_for_nongroups is a new arg; + store 1 in it if this reg is needed for max_nongroups. + + * reload1.c (choose_reload_targets): Allow inheritance of DFmode + if it needs only one register. + + * reload1.c (choose_reload_targets): Delete the death-note from the + store-insn of an inherited reload if PRESERVE_DEATH_INFO_REGNO_P. + + * reload.c (push_reload): Crash if PREFERRED_RELOAD_CLASS is NO_REGS. + (find_reloads): Smarter handling of forcing CONST_DOUBLE into mem. + Check PREFERRED_RELOAD_CLASS & do this if it says NO_REGS. + + * reload.c (subst_indexed_address): Handle case with 2 regs + and no constant term. + + * local-alloc.c: New variable qty_n_refs, set from reg_n_refs + and tested in qty_compare{,_1}. + (combine_regs): Update qty_n_refs. + Update qty_preferred_or_nothing more intelligently. + + * regclass.c (regclass, reg_class_record, record_address_regs): + Count the number of refs to each reg along with the costs, + and use it when computing the preferred_or_nothing flag. + (Can't use reg_n_refs since that is weighted by loop depth). + + * global-alloc.c (global_alloc): Enable test of OVERLAPPING_REGNO_P + for setting no_global_alloc_regs. + + * expr.c (prepare_call_address): Use force_reg, so it gets a REG_EQUIV. + + * optabs.c (can_{fix,float}_p): Return enum insn_code, not a function. + (init_{fix,float}_tab): Store enum insn_code's in fixtab and floattab. + (expand_{fix,float}): Change calls to can_{fix,float}_p. + Also, use emit_unop_insn to make the actual insns. + +Fri Jul 29 02:42:40 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * cccp.c (initialize_char_syntax): If dollars_in_identifiers is 0, + set entries for `$' to 0. + Set entries to 1 rather than incrementing them. + +Tue Jul 26 11:14:22 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * varasm.c (assemble_variable): Make SDB output only if top-level. + + * local-alloc.c (reg_is_set): Arg to mark_life is regno, not qty. + + * output-ns32k.c (print_operand_address): New flag SEQUENT_BASE_REGS + * tm-sequent.h: Define that flag. + + * Makefile: add some missing deps. + + * tm-encore.h (ASM_FILE_START): Changed to do nothing. + + * sdbout.c (sdbout_init): Fix two dumb errors. + + * sdbout.c (sdbout_end_epilogue): No longer takes arg. + Examine current_function_decl here, not in caller. + * final.c: Call changed. + +Mon Jul 25 01:32:54 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stor-layout.c (layout_record): Handle PCC_BITFIELD_TYPE_MATTERS. + + * tm-3b1.h (__PTR_TO_INT, __INT_TO_PTR): Define these, to alter + parts of obstack.h. + +Sun Jul 24 17:56:53 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Padding for an arg may now go below or above it; new macro + FUNCTION_ARG_PADDING can now choose which, or can inhibit padding. + This makes for compatibility with PCC. + * expr.h: Default definition of that macro. + * expr.c (emit_push_insn): Put the padding above or below. + (expand_call): Don't count the padding if none wanted. + * stmt.c (assign_parms): Adjust parm stack addr if padded below. + Don't count the padding if none wanted. + * tm-3b1.h: Define FUNCTION_ARG_PADDING: no padding for > 4 bytes. + + * final.c (alter_subreg): Now returns the altered value + (but may still modify the original structure). + Handles (SUBREG:DI (CONST_DOUBLE:DF...)) by returning the CONST_DOUBLE. + + * m68k.md (DImode push): now allows `F'. + * ns32k.md (movdi): now allows `F'. + + * tm-m68k.h (FIX_FRAME_POINTER_ADDRESS): + Handle indexed references to frame pointer. + * tm-i386.h, tm-m88k.h, tm-sparc.h: Likewise. + + * cse.c (predecide_loop_entry): Must search for the loop top label. + +Sat Jul 23 08:53:01 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * parse.y (yylex): typo in wide strings. + + * tm-vaxv.h, config-vaxv.h: New files for sysV on vax. + + * config-sun4.h: If sparc and not compiling with GCC, include alloca.h. + +Fri Jul 22 02:38:02 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * tree.c (build_real_from_int_cst): CHECK_FLOAT_VALUE at proper place. + + * tm-hp9k320.h ({TEXT,DATA}_SECTION_ASM_OP): Should not include a tab. + * final.c (final_start_function): Don't output a tab before those. + + * sdbout.c (PUT_SDB_EPILOGUE_END): New macro. + * sdbout.c (sdbout_end_epilogue): New function to output the C_EFCN. + Like former sdbout_mark_end_function. Uses that macro. + * final.c (final_end_function): Call that function. + * tm-3b1.h: Override PUT_SDB_EPILOGUE_END like the other PUT_SDB... + + * tm-3b1.h (PRINT_OPERAND_ADDRESS, ASM_OUTPUT_INTERNAL_LABEL, + ASM_OUTPUT_CASE_{LABEL,END}): Put a % in names of internal labels. + (ASM_GENERATE_INTERNAL_LABEL, ASM_OUTPUT_ADDR_{VEC,DIFF}_ELT): + New macros, for same reason. + (FUNCTION_PROFILER): New macro, for % and also to put addr in a0. + + * final.c (output_source_line): For fcn's first line, use lineno 1. + * sdbout.c (sdbout_end_function): Clear sdb_begin_function_line + so can recognize first line of next function. + + * sdbout.c (sdbout_init): Output the .file pseudo here. + * tm-3b1.h, tm-att386.h (ASM_FILE_START): Don't do it here. + + * sdbout.c (PUT_SDB_VAL): Output leading tab, like the other macros. + * tm-3b1.h (PUT_SDB_VAL): Likewise. + + * regclass.c (regclass): Cast enums to int, not char. + * varasm.c (record_constant): Likewise. Avoids 3b1 PCC bug. + + * decl.c (pushdecl): Better choice of error message for extern/static. + + * emit-rtl.c: Do look for STRUCT_VALUE_INCOMING_REGNUM. + +Thu Jul 21 02:13:03 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * cse.c (canon_hash): CONST_INT case failed to add to prev. value + of HASH; was inconsistent with cse_insn mem address hashing. + + * m68k.md (divide insns): Alternate 3B1 syntax for `swap' insn. + +Wed Jul 20 18:27:10 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * m68k.md: In shift-by-24 patterns, rejects autoincrement memrefs + since they are mode-dependent. + +Tue Jul 19 13:01:38 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * parse.y (check_newline): Handle #ident by writing .ident to output. + * cccp.c: Don't handle #ident; delete IDENT_DIRECTIVE conditionals. + + * stmt.c (expand_end_case): In compares, put constant arg second. + + * jump.c (jump_optimize): Delete conditional jump if followed by + an unconditional jump to the same place. + +Mon Jul 18 17:49:13 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * emit-rtl.c (init_emit_once): Now STRUCT_VALUE_INCOMING is an + expression for an rtx. It can make a MEM. Likewise STRUCT_VALUE + for outgoing structure value addresses. + + * stmt.c (assign_parms): If incoming struct addr on stack, leave room. + * expr.c (expand_call): If outgoing addr on stack, push it like an arg. + + * PROMOTE_PROTOTYPES means if proto says `char', pass `int'. + * decl.c (get_parm_info): Alter DECL_ARG_TYPE to do this. + * typecheck.c (actualparameterlist): Convert value for this. + * tm-m68k.h: Define PROMOTE_PROTOTYPES. + +Sun Jul 17 14:25:47 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * jump.c (jump_optimize): peephole can delete insns following INSN. + Set NEXT after peephole. + + * decl.c (finish_decl): Always restart perm alloc if global. + + * stmt.c (assign_parms): When a float is passed as double, store the + float in low-numbered word. Avoids trouble with parm_map in integrate. + + * vax.md: New pattern for decrement and compare against -1. + +Sat Jul 16 14:18:00 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * decl.c (pushdecl): Ignore previous decl if it's really an error_mark. + + * stmt.c (expand_start_case): Make sure case_stmt.start is a NOTE. + + * combine.c (subst): In the simplification for + (set (zero_extract ...) (and/or/xor (zero_extract ...) const)), + require same memory location in both extracts. + + * *386*: New files. + + * cse.c (fold_rtx): Save time in memory address if it didn't change. + Don't replace cheaper expression with coslier one. + (cse_insn): Reenable generation of REG_WAS_0. It wasn't obsolete. + + * cccp.c: `ident' has 5 letters. + + * final.c (output_source_line): SDB can't handle multiple source + files, so ignore line-NOTEs for other files. + + * hard-reg-set.h: New var reg_class_size (# regs in the class). + * regclass.c (init_reg_class): Set it up. + + * reload.c (find_reloads): If an earlyclobber is in a class of size 1 + as an output, reload it as input instead of as output. + + * reload1.c (choose_reload_targets): Improve elimimation of spilled + pseudos made dead by reloading: if pseudo is limited to one block + and that block contains just stores, delete all the stores. + + * reload1.c (choose_reload_targets): reg_has_output_reload is now + static and survives through reload pass. + (forget_old_reloads): Don't cancel data on spilled regs of output + reloads of the insn just made. + + * sdbout.c (sdbout_one_type): Go to .text before defining a type. + (sdbout_block): Test against do_block was backwards. + + * stmt.c (expand_end_function): New args to make a NOTE for last line. + * decl.c (finish_function): Pass the args. + + * rtl.c (no_labels_between): New function. + * vax.md (movsi): Call it. + + * print-tree.c (dump): Don't follow chain of a decl. + + * rtl.c (volatile_refs_p): Moved from flow.c. + +Fri Jul 15 13:36:20 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * sdbout.c (PUT_SDB...): Allow config to override any of them. + * sdbout.c (PUT_SDB_{BLOCK,FUNCTION}_{START,END}): New macros. + * tm-3b1.h: Override all of them. + * sdbout.c (SDB_GENERATE_FAKE): New macro to create dummy tag name. + (gen_fake_label): Use SDB_GENERATE_FAKE. + * tm-3b1.h: Override its defn. + + * sdbout.c (sdbout_mark_function_end): Unused; deleted. + + * tm-3b1.h: Define SDB_DEBUGGING_INFO. + +Thu Jul 14 01:55:15 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * config-sunv4.h: New file for Sunos version 4. + + * tm-sun3.h (CPP_SPEC): Define mc68010 or mc68020, depending. + +Tue Jul 12 15:31:30 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stmt.c (expand_fixup, expand_goto_internal): New functions to + emit a jump that can restore the stack level, even without tree node. + (expand_null_return, expand_exit_loop, etc.): Use expand_goto_internal. + (expand_end_function): Do fixup_gotos after emitting return_label. + + * cse.c (predecide_loop_entry): Avoid using JUMP_LABEL. + * flow.c (find_basic_blocks): Avoid using JUMP_LABEL. + + * flow.c (insn_dead_p): Delete special case for stack-adjust insns. + (life_analysis): Mark those insns with INSN_VOLATILE here. + (mark_used_regs): a SET of a hard reg, in a volatile insn, + always makes its source live. + +Mon Jul 11 10:46:26 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * ns32k.md (floatqidf2): Commented out since assemblers warn about it. + +Sun Jul 10 11:49:23 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * decl.c (xref_tag): Default the TYPE_MODE of enum xrefs + to avoid making MEM and REG with VOIDmode. + + * vax.md (call): If > 255 args, pop them explicitly. + +Sat Jul 9 10:53:47 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * symout.c (symout_types): Fix up forward refs to previously + undefined structure types. + (filter_undefined_types): New function. + (symout_finish, symout_function_end): Output any never-defined structs. + * toplev.c (rest_of_compilation): call symout_function_end. + + * parse.y: Don't declare errno if it's a macro. + + * tm-hp9k320 (FUNCTION_PROFILER): Pass ptr in a0, not d0. + + * typecheck.c (truthvalue_conversion): Flush unnec recursive call. + (build_cond_expr): Bug testing zeroness of IFEXP with TREE_LITERAL. + + * cse.c (fold_cc0): Constants not CONST_INT are certainly nonzero. + * fold-const.c (fold): ADDR_EXPR is not equal to zero. + + * cccp.c (macroexpand): Disable the macro even if traditional. + (rescan): Error if use a disabled macro. + + * combine.c (try_combine): Don't substitute a different reg into + an auto-increment. Handle multiple REG_INC notes in I1 or I2. + + * decl.c (implicitly_declare): Don't reuse old implicit decl. + + * varasm.c (assemble_variable): Avoid syntax err if no DBX and no SDB. + * final.c (output_source_line): likewise. + + * fold-const.c (fold): PLUS/MINUS_EXPR: in case of cancellation, + convert result to original type. + + * regclass.c (reg_class_record): Changed arguments include address + of entire vector of constraints. + +Fri Jul 8 07:59:00 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload1.c (reload): Find groups of more than 2 registers. + +Thu Jul 7 08:33:07 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * expr.c (emit_push_insn): Typo adjusting arg for bcopy + if not STACK_GROWS_DOWNWARD. + + * gnulib.c (_cmpsf2): Value is int, not SFVALUE. + +Wed Jul 6 11:53:46 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * tm-encore.h, tm-3b1.h: Replace ASM_FILE_START; output a .file. + + * *m88*: New files for Motorola 88000. They don't really work. + +Tue Jul 5 14:40:03 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * local-alloc.c (combine_regs): Don't tie a reg to itself. + + * finxincludes: Make a variable LIB for the target dir. + + * m68k.md (movhi, addhi3, addsi3): Micro-optimize choice of asm insns. + + * expr.c (expand_expr): Use new macros NO_DEFER_POP, OK_DEFER_POP + in several places, to keep stack predictable. + +Mon Jul 4 09:50:18 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * integrate.c (function_cannot_inline_p): Increase threshold size. + + * flags.h (use_gdb_dbx_extensions): New variable. + * toplev.c: + + * sdbout.c (PUT_SDB_TAG): Delete duplicate defn. + + * expr.c (expand_expr): For FIX_TRUNC_EXPR to unsigned short/char, + REALLY go via signed int. + + * loop.c (may_trap_p): Was detecting floating arithmetic incorrectly. + + * tm-news800.h (CPP_PREDEFINES): Add sony and sony_news. + + * parse.y (check_newline): Avoid infinite loop at eof. + +Sat Jul 2 10:35:17 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Version 1.24 released. + + * stmt.c (expand_asm_operands): Produce proper no-outputs insn. + * recog.c (asm_noperands): Detect no-outputs insns. + (decode_asm_operands): Likewise. + * reload.c (find_reloads): Likewise (add case ASM_OPERANDS:). + + * local-alloc.c (block_alloc): Tests of qty_compare were backwards. + + * flow.c (life_analysis): Turn off code that finds regs live at + function start and marks them not local to any basic block. + + * cse.c (insert_regs): Fix typo (UNITS_PER_WORD). + + * cccp.c: Define max. + + * expr.c (expand_expr): Put each SAVE_EXPR's reg on save_expr_regs, + if not optimizing. + * stmt.c (expand_function_end): Mark each of those regs live + at the end and also retroactively at the beginning of the function. + + * output-vax.c (print_operand_address): New function from old macro. + * tm-vax.h (PRINT_OPERAND_ADDRESS): Call that function. + + * config-vms.h: If not under GNU C, define X_OK, etc. + + * expr.c (move_by_pieces_1): Use * to call GENFUN. + (expand_expr): Compare DECL_FUNCTION_CODE against an enum const. + (preexpand_calls): Likewise. + * genrecog.c (write_tree): Likewise. + * final.c (final): Use * to call the output function. + * reload.c (push_reload): Rename `noshare' to `dont_share'. + + * genoutput.c (output_epilogue): Put more newlines in insn_outfun. + * genemit (gen_exp): Put in more newlines. + +Fri Jul 1 00:23:57 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * global-alloc.c (allocno_compare): Avoid comparisons of floats + since that is sensitive to roundoff errors. + +Thu Jun 30 09:25:40 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * sdbout.c (PUT_SDB_{DEF,TAG}): Use ASM_OUTPUT_LABELREF. + (PUT_SDB_PLAIN_DEF): New name for old defn of PUT_SDB_DEF + (sdbout_one_type): Use PUT_SDB_PLAIN_DEF for `.eos'. + + * tree.c (allocation_temporary_p): New fcn. + (all_types_permanent): New variable. + (make_node): If that's set, make each ...TYPE node permanent. + * decl.c (grokdeclarator): If traditional, make decl data permanent. + (finish_decl): Make the rtl permanent too. + * stor-layout.c (layout_type): If type is permanent, + make its layout data permanent too. + + * cccp.c: Choose C++ or C at run time via var `cplusplus'. + Separate cplusplus_include_default from include_default. + Get GNU-specific include directory names from macros + GCC_INCLUDE_DIR and GPLUSPLUS_INCLUDE_DIR. + (main): Initialize based on CPLUSPLUS; `-+' sets it. + * Makefile: Set *_INCLUDE_DIR based on $(libdir). + +Tue Jun 28 09:25:49 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * tree.c (copy_node): Round LENGTH up to multiple of sizeof (int). + + * expr.c (emit_push_insn): Avoid using PUSH_ROUNDING if not defined. + + * sparc.md (floatsisf2): Insert missing brace. + (mulsi3): Replace reg_o0_rtx, reg_o1_rtx. + + * tm-sparc.h: Define DBX_DEBUGGING_INFO. + + * parse.y (yylex): If traditional, no error for out-of-range float. + + * Makefile: Comment saying how to compile on an Apollo. + + * tm-sparc.h (ASM_FILE_START): Switch to new calling convention. + + * decl.c (init_decl_processing): Create type nodes for 64-bit ints. + (grokdeclarator): use them for `long long'. Warn only if pedantic. + + * optabs.c (init_optabs): Add missing DImode insn names. + + * expr.c (emit_block_move, emit_push_insn): Use movstrqi if appro. + + * expr.c (convert_move): use extendsidi if appropriate. + + * cccp.c (initialize_builtins): Don't install __STDC__ if traditional. + (main): Call initialize_builtins after option processing. + + * integrate.c (output_inline_function): Set current_function_decl. + + * cse.c (fold_rtx): Typo in avoiding 32-bit shifts. + + * cccp.c: Add forward-decl. + +Mon Jun 27 18:06:42 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * hard-reg-set.h (reg_alloc_order): New variable + based on REG_ALLOC_ORDER, a new machine-description macro. + * regclass.c (reg_alloc_order): Define it. + * local-alloc.c (find_free_reg): Handle reg_alloc_order. + * global-alloc.c (find_reg): Likewise. + * stupid.c (stupid_find_reg): Likewise. + +Sun Jun 26 10:47:47 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Version 1.23 released. + + * tm-3b1.h: Define IDENT_DIRECTIVE. + + * tm-encore.h: Define SDB_DEBUGGING_INFO. + Define SCCS_DIRECTIVE and IDENT_DIRECTIVE. + + * output-ns32k.c: Decl of paren_base_reg_printed must be outside fcns. + + * tm-encore.h (ASM_OUTPUT_DOUBLE): Do 0f, not 0l. + (CPP_PREDEFINES): No -Dns32032. + + * sdbout.c: Include syms.h, not storclass.h. + (unnamed_struct_member): Decl was missing. + (PUT_SDB_INT_VAL, PUT_SDB_VAL): Fix typos. + (sdbout_types, sdbout_one_type, sdbout_parms): Fix typos. + + * Makefile: Add file sdbout.o. + Changed comments pertaining to sysV. + Make a separate target `doc' to make the info files. + + * m68k.md (bit-field insns): Use nonimmediate_operand for the thing + to extract from. + * vax.md (QImode bit-field insns): Likewise. + + * recog.c (nonimmediate_operand): Accept any nonconst general operand. + +Sat Jun 25 07:54:42 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * cse.c (lookup_as_function): arg to exp_equiv_p was missing. + +Fri Jun 24 09:14:47 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * recog.c (memory_operand): Allow (subreg (mem...)). + +Thu Jun 23 07:34:07 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * decl.c (finish_enum): Compute minimum value like maximum. + If minimum is negative, install it in the type and make it signed. + + * stor-layout.c (layout_record): STRUCTURE_SIZE_BOUNDARY is minimum. + (layout_type): A RECORD_TYPE or UNION_TYPE must be BLKmode if + any member is BLKmode. This is to prevent putting it in a register. + (layout_decl): If decl's type is BLKmode, the decl *must* be BLKmode. + + * local-alloc.c (find_free_reg): Never allocate the frame pointer reg. + + * tm-sequent.h (PRINT_OPERAND): Bug in SFmode CONST_DOUBLE. + * tm-encore.h: Likewise. + + * flow.c (flow_analysis): Bug in n_basic_blocks error check. + + * stmt.c (expand_asm_operands): Emit no insn if an arg is erroneous. + +Tue Jun 21 08:34:24 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload.c (find_reloads_address): Write back *loc even if + subst_reg_equivs makes no change, in case subst_index_address did. + + * flow.c: Define macros for -1 and -2 as values of reg_basic_block. + (mark_used_regs): Add an `else'; no change in behavior. + (mark_label_ref): Abort if LABEL_REF doesn't contain a CODE_LABEL. + (find_basic_blocks): Extra error check. + + * output-ns32k.c (print_operand_address): Changes in handling of + register-indirect, and of indexing by sb register. + +Mon Jun 20 04:55:38 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * cccp.c (collect_definition): Compute needed space more accurately. + Abort if use more space than was allocated. + (rescan) [USE_C_ALLOCA]: Do alloca (0) after handle_directive. + + * genflags.c (gen_insn): Put parens around defns of HAVE_... macros. + +Sun Jun 19 02:52:53 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * expr.c (emit_push_insn): Consider PARM_BOUNDARY when compensating + for size of a pushed arg to bcopy. + +Sat Jun 18 07:20:54 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * New files sparc.md, tm-sparc.h, config-sparc.h, output-sparc.c. + + * final.c (final): After an ADDR_{,DIFF_}VEC, do ASM_OUTPUT_CASE_END. + * tm-3b1.h: Define ASM_OUTPUT_CASE_END. + (PRINT_OPERAND_ADDRESS): Ref the case tables via an intermediate symbol + `LDnnn' whose def. is output by ASM_OUTPUT_CASE_END. + (ASM_OUTPUT_CASE_LABEL): Add missing newline. + + * reload.c (find_equiv_reg): Reject a MEM containing an autoincrement. + +Fri Jun 17 06:58:37 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * genpeep.c (main): Write `extern' in the decl for `peep_operand'. + + * flow.c (propagate_block): When a dead insn has a REG_RETVAL note, + call mark_set_regs anyway, so that `significant' is updated. + + * jump.c (follow_jumps): New arg IGNORE_LOOPS. If 0, don't follow + the insn at the beginning of a loop that enters the loop; this avoids + interference with loop optimizer. + (jump_optimize, tension_vector_labels): Pass that arg. + + * loop.c (loop_optimize): Mention invalid multiple-entry loops in log. + + * m68k.md (extv, extzv): Fix # of alternatives mismatch in constraints. + +Thu Jun 16 03:06:48 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * genrecog.c (change_state): Was mishandling printing XVECEXP indices + greater than 9. + + * combine.c (subst, simplify_and_const_int): Avoid making SUBREG + of a non-REG. + + * expr.c (expand_expr): For FIX_TRUNC_EXPR to unsigned short/char, + go via signed int. + + * optabs.c (expand_fix): Copy hard_libcall_value reg only once. + + * reload1.c (order_regs_for_reload): Init all elements + of potential_reload_regs to -1. + + * Prevent generation of (set (reg) (plus ... (label_ref ...))). + * explow.c (memory_address_noforce): Like `memory_address' but + never force it into a register. + * expr.c (do_tablejump): Use that. + * m68k.md (casesi): Use that. + + * rtl.h (struct rtx_def, GET_CODE, PUT_CODE): If SHORT_ENUM_BUG, + define the `code' field as a short. + +Wed Jun 15 01:25:57 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * gcc.c (CPP_SPEC): New spec set by config.h gives flags to cpp. + * tm-*.h for m68k: Define CPP_SPEC to define __HAVE_FPU__ on + appropriate conditions. + + * combine.c (subst): Simplify (not (minus x 1)) and (neg (minus x y)). + +Mon Jun 13 02:22:43 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * typecheck.c (build_array_ref): Avoid duplicate errmsg if index + is an error-mark. + +Sun Jun 12 23:04:39 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * cccp.c (handle_directive): If -traditional, quotes aren't special. + (rescan): Assume newline ends a string constant. + + * cccp.c, cexp.y: Make all fcns non-static; add some forward decls. + + * various: add static forward-decls for various functions. + +Fri Jun 10 00:25:18 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload1.c (choose_reload_targets): When writing back an incremented + value (handling reload_inc), write back to the real place, not to + OLDEQUIV (a register that holds the same value). + + * tm-m68k.h (LEGITIMIZE_ADDRESS): Don't give force_operand a target. + This can cause the use of multiple insns with same output reg, + which can confuse cse. + + * loop.c (consec_sets_invariant_p): + If invariant_p ever returns 2, we return 2. + New arg is # of consecutive sets to look for, + since this info is no longer in n_times_set at move_movables. + (scan_loop): If consec_sets_invariant_p returns 2, set m->cond. + (move_movables): check consecutive insns if m->consec && m->cond. + + * tm*.h: ASM_DECLARE_FUNCTION_NAME now takes 3rd arg, + the FUNCTION_DECL node. + * varasm.c (assemble_function): Pass this arg. + + * expr.c (expand_call, expand_builtin [alloca]): + If STACK_POINTER_OFFSET is defined, add it to stack pointer contents + before using it as address of actual data on the stack. + * stmt.c (expand_decl): Likewise. + + * stmt.c (assign_parms): If 1st parm named `__builtin_va_alist' + came in regs, pretend it came on stack. + Handle pretending a BLKmode var came on the stack. + If REG_PARM_STACK_SLOT, count stack space for each parm + even if the parm came in a register; and use that stack space + if the parm needs to be addressable or is BLKmode. + Rearrange to simplify conditionals. + +Thu Jun 9 01:21:29 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * local-alloc.c: + `qty_...' vectors' elements for hard-reg-numbers now aren't used. + `reg_qty' elements for hard-reg numbers now aren't used, + and the element for a pseudo is never a hard-reg number. + (local_alloc): No need to reset those elements. + No need to reset elements out of range of prev block's NEXT_QTY. + (reg_is_born, reg_is_set, wipe_dead_reg): + Divide labor in same way for hard regs and pseudos; + simplify using fact that locality-to-basic-block has been precomputed + and recorded in reg_qty; avoid refs to reg_qty[HARDREG]. + (reg_is_born, wipe_dead_regs): Block-number arg no longer needed. + + * local-alloc.c (combine_regs): Remove old code for tying hard regs + to pseudos; great simplification results. + Use find_regno_note, not regno_dead_p. + +Wed Jun 8 00:18:04 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * reload.c (subst_reg_equivs): Set a flag if anything is changed. + (find_reloads_address): Check that flag to avoid extra work. + Also check early for safe reg+const address and avoid work. + + * reload.c (find_reloads): Use loops instead of bcopy. + Check early for insn with no real constraints, and return. + Also check for move from hard reg to hard reg and return. + + * cse.c (canon_reg): Rewrite for speed; use a switch. + (cse_insn): Don't call find_reg_note if REG_NOTES is 0. + + * cse.c (cse_insn): Store modified SET_SRC even if there's a REG_EQUIV. + Inhibition was needed when the SET_SRC was the only place to find the + equivalent value; now it is in the REG_EQUIV note. + + * stmt.c (expand_asm_operands): If NINPUTS is 0, make vec of no elts. + * regclass.c (reg_scan_mark_refs): Don't lose if XVEC (x,i) is 0. + +Tue Jun 7 03:51:28 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * stmt.c (assign_stack_local): If big-endian and MODE is narrow, + the bytes actually used are the least significant. + + * parse.y (skip_white_space): Accept char as arg; let caller read it. + (yylex): Change call. + (check_newline): Return 1st nonwhite char after skipping lines. + (skip_white_space): Change call. + * toplev.c (compile_file): Change call. + + * gcc.c: Pass -traditional to cc1. + + * cse.c (cse_insn): Return very early for (set (reg) (call...)). + Mainly to save time. + (cse-insn) Old code to add REG_WAS_0 note wasted time but did nothing. + + * expr.c (clear_pending_stack_adjust): Really do clear it, + if current fcn doesn't want to be inline. + + * cse.c (cse_insn): Speedup: instead of safe_hash, use canon_hash + or HASHREG. + +Mon Jun 6 21:47:23 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * jump.c (rtx_renumbered_equal_p): Reject ADDR_VEC fast. + + * cse.c (cse_insn): Ignore a REG_EQUIV or REG_EQUAL note if the + equivalent value is the same as the SET_SRC of the insn. + + * flow.c (life_analysis): Don't call volatile_refs_p for a CALL_INSN; + just assume value is 1. + (propagate_block): Don't call mark_{used,set}_regs for a stack-pop + since if it isn't dead it has no effect on any useful life data. + (mark_set_1): Return quickly if setting stack-ptr, and almost as + quickly if setting any hard reg. + (mark_used_regs): Likewise for refs. + Also don't scan the vector of an ADDR_VEC or ADDR_DIFF_VEC. + (volatile_refs_p): Likewise. + + * varasm.c (output_constant): Discard NOP_EXPR and CONVERT_EXPR + in integer case (they were for casting a pointer). + + * parse.y (compstmt_or_error): Parse a compstmt after ignoring error. + Use this for fctn body so that an error after store_parm_decls + won't recover to xdecls and call store_parm_decls again. + Typical cause was missing semi at end of last parmdecl. + + * parse.y: Add missing semicolons in actions. + (yylex): Don't use yylloc. + +Sun Jun 5 16:14:40 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * typecheck.c (build_array_ref): Check arg types here, to make + error message more accurate (not about "addition"). + +Thu Jun 2 02:41:40 1988 Richard Stallman (rms at rice-krispies.ai.mit.edu) + + * cccp.c (collect_expansion): `#' isn't special if -traditional. + + * dbxout.c (dbxout_parms): Don't output a regparm symbol + unless the parm got a hard reg assigned. + + * tm-encore.h (ASM_OUTPUT_DOUBLE): Use 0f... not 0d... + + * tm-vax.h (CHECK_FLOAT_VALUE): Define this. + +Wed Jun 1 17:13:00 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * expr.c (expand_call): Have sequence points between args. + +Tue May 31 00:27:06 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * expmed.c (store_fixed_bit_field): Avoid shifting by 32. + * cse.c (fold_rtx): + * symout.c (subrange_p): likewise. + + * local-alloc.c (block_alloc): If operands 1 and 2 commute, + try tying output to operand 2 if operand 1 won't do. + + * toplev.c (compile_file): Pass main_input_file to symout_init. + + * tree.c (build_real, build_real_from_int_cst): + Call CHECK_FLOAT_VALUE if it's defined, to report out-of-range values. + + * tree.c (build_real, build_real_from_int_cst): New 1st arg TYPE. + * parse.y (yylex): Pass this arg; requires parsing suffixes first. + * fold-const.c (fold, combine, fold_convert): Pass this arg. + Handling of float binops in `combine' simplified. + + * tm-encore.h (CPP_PREDEFINES): Remove -Dencore since CC lacks it. + + * final.c (output_source_line): Let ASM_OUTPUT_SOURCE_LINE + be used for SDB also. + +Mon May 30 00:21:15 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * cse.c (insert): Was inserting in wrong place in list. + (exp_equiv_p): Was failing to check validity when x == y. + + * tree.c (build_pointer_type): Handle saveable_obstack + like current_obstack. + + * decl.c (finish_decl): Error in test for zero-size array warning. + + * reload.c (find_equiv_reg): New arg MODE specifies mode in which + an equivalent value is needed. Equivalence must be good in that mode. + In addition, notice overlap with multiword register modes. + Simplify, knowing that registers have already been renumbered. + It was invalidating memory-goals too easily; setting a reg + only invalidates memory-goal if its address varies. + * reload.c, reload1.c, jump.c: Calls pass the new argument. + + * cccp.c: For correct ANSI, must reject `$' in identifiers. + (dollars_in_ident): Variable says whether to allow them. + (rescan): Handle `$' as randomchar if that's 0. + (main): dollars_in_ident is set to 0 by -$, to 1 by -traditional. + (rescan, do_define): Delete former pedantic warnings for `$'. + (initialize_char_syntax, initialize_builtins): Inits split to two + functions; former is called after options are scanned + so `$' is in is_idchar conditionally. + * gcc.c: For -ansi, pass -$ to cccp. + * toplev.c, flags.h: Define dollars_in_ident. + * parse.y (yylex): Treat $ as punctuation unless dollars_in_ident. + Delete old pedantic warning about $. + * tm-vms.h: Define DOLLARS_IN_IDENTIFIERS as 1. + + * cccp.c (rescan): Preprocessing numbers can have signs, after `e'. + + * integrate.c (expand_inline_function): Abort, don't return failure, + if max_regno is too low. I believe this can't happen. + + * typecheck.c (build_binary_op_nodefault): + For ordered comparisons, no pedantic warning about void *. + For MAX, MIN, ditto, and also don't allow pointer vs 0. + + * typecheck.c (build_unary_op): Don't allow pointer for +. + + * typecheck.c (convert_for_assignment): + Add missing warning for case of unrelated pointer types. + Change criteria for new ANSI C draft. + + * optabs.c (expand_binop): Don't set unused target_is_not_an_operand. + + * fold-const.c (fold_convert): Don't set unused inprec, outprec. + + * emit-rtl.c, parse.y: Delete unused var. + + * stor-layout.c (add_vc_sizes): Unused function deleted. + * loop.c (constant_high_bytes): #if 0 this unused function. + + * gcc.c (fatal): Add missing arg to delete_temp_files. + + * cccp.c (dump_defn_1): Add missing arg to skip_quoted_string. + + * reload.c (find_reloads): If constraints don't fit in an `asm', + print error instead of aborting. + + * regclass.c (reg_class_record): Ignore `&' in constraint. + +Sun May 29 00:20:23 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * Makefile: Run ranlib only if /usr/bin/ranlib exists. + Add comment saying what to do on system V. + + * tree.c (suspend_momentary): Switch to the saveable_obstack + for the sake of inline functions. + + * flags.h (enum debugger): New enum for write_symbols. + * toplev.c, varasm.c, final.c: Use the enum constants where appro. + Add calls to sdbout paralleling the calls to dbxout; + put each in the appropriate conditional {SDB,DBX}_DEBUGGING_INFO. + + * toplev.c (main): Delete -noreg option; it's now the default. + Make -O an alias for -opt. Rename -g to -gg. -g is alias for -G. + Accept and ignore -Wtrigraphs. + * gcc.c: Simplify the specs. + + * toplev.c (compile_file), tm-*.h: + ASM_FILE_START is now a statement, not just a string to be output. + Output it *after* determining the real source file name. + + * fold-const.c (fold): Simplify x >= CST to x > CST-1 (CST positive). + To simplify this, canonicalize relationals to put constat last. + + * decl.c (duplicate_decls): Make a 2nd errmsg to show previous decl. + + * cccp.c (file_size_and_mode): Delete temporary VMS bootstrap patch. + + * tm-att386.h: New file. + + * decl.c (pushdecl): Warn if a local `extern' decl precedes + a file-scope `static' decl. + + * expr.c (expand_call): No warning for failure to inline. + + * expmed.c (extract_bit_field): copy operand 1 of extv or extzv + into register if memory isn't allowed. + +Sat May 28 02:10:56 1988 Richard Stallman (rms at sugar-bombs.ai.mit.edu) + + * gnulib.c, Makefile: Delete va_end. + + * final.c, symout.c: Check DBX_DEBUGGING_INFO, not NO_DBX_FORMAT. + + * genemit.c (gen_expand): Notice a CALL inside a PARALLEL. + + * regclass.c (init_reg_sets_1): Part of init_reg_set is put in this + new fn which is called after options are scanned. + Now CONDITIONAL_REGISTER_USAGE can depend on the options. + (fix_register): Just alter the data that init_reg_sets_1 will look at. + + * reload1.c (reload): Don't complain if two different but tieable + modes require groups of the same regclass (assuming same size group). + + * cccp.c: Add 3rd arg to all `open' calls. + + * parse.y (check_newline): Typo prevented ignoring whitespace. + + * cccp.c (perror_with_name): fprintf had harmful extra arg. + + * cccp.c (main, trigraph_pcp): -Wtrigraphs means warn if any trigraphs. + + * emit-rtl.c (gen_sequence): If LEN is 1, avoid looking at PATTERN + of something that doesn't have one. + + * reload1.c (alter_frame_pointer_addresses): frame pointer can + occur by itself, not just inside a PLUS. + (reload): Call eliminate_frame_pointer before reload_as_needed. + Otherwise the latter can make reload insns that copy the frame ptr + to a data reg, but 68k can't copy sp+const to a data reg. + + * decl.c (implicitly_declare): Always save the implicit decl + permanently. Reuse an old one if it exists. + * tree.c (resume_temporary_allocation): Used after `end_temporary...' + to go back to temporary allocation. + + * stor-layout (layout_{type,decl}): Call variable_size. + (variable_size): Turn a size into a SAVE_EXPR and either compute + it right away or put it on a list to be computed later. + (get_pending_sizes): Return that list and clear it out. + * stmt.c (expand_start_function): Tell `variable_size' to compute + sizes right away, and compute those saved on the list. + (expand_end_function): Tell it to put them on a list. + +Fri May 27 00:02:34 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * dbxout.c (dbxout_symbol): For local static var, use 'V', not 'v'. + + * gcc.c (main): Don't handle SIGHUP or SIGTERM if shell ignored it. + + * Makefile, gcc.c: Propagate Make var `libdir' to gcc search path. + + * expr.c (expand_expr): a PARM_DECL with no rtl can occur in size of + `a' in `foo (a,i) int i; struct {int x[i];} a;', so report an error. + + * flow.c (insn_dead_p): insn that makes stack bigger is never dead. + * combine.c (try_combine): Don't splice out stores into stack ptr. + + * reload.c (find_equiv_reg): Test given regno for OVERLAPPING_REGNO_P. + + * varasm.c (assemble_variable): Use saveable_obstack for allocation. + +Thu May 26 01:17:00 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * integrate.c (save_for_inline): Clear unused slots in parmdecl_map. + (There may be some non-parm regs below max_parm_regno.) + * integrate.c (copy_for_inline): Don't crash if parmdecl_map elt is 0. + + * Don't fail to output a static inline function that was referenced + via a local extern decl before its definition. + * expr.c (expand_call): If need to mark a fcn decl addressable, + mark the identifier addressable also. + * typecheck.c (mark_addressable): If marking fcn addressable, + mark the identifier as well. + * decl.c (start_function): If identifier was marked addressable, + propagate it to the function. + + * parse.y (yylex): Check for ERANGE after atof is called. + (Sun doesn't report ERANGE.) + + * loop.c (may_trap_p): Any floating arithmetic may trap. + +Wed May 25 00:03:34 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * parse.y: Delete `noalias'. + (asm_operand): Don't allow this to be empty. + (asm_operands): Do allow this to be empty. + + * reload.c (operands_match_p): Don't let REG and SUBREG match + if the reg isn't a hard reg. + No longer nec. to check reg_renumber, now that reload + substitutes the hard regno. + + * reload1.c (reload): Counting existing spilled groups, + check HARD_REGNO_MODE_OK so we don't get fooled by an odd-even pair. + Spill entire need for new groups before spilling any solitary regs. + Reg already counted against max_nongroups can't become part of a group. + (new_spill_reg): Do bookkeeping associated with a new spill-reg. + (n_spills): This var is now static, no longer passed as arg + within the file. + + (reload_reg_class_lower): Handle all group-reloads before solitaries. + (choose_reload_targets): therefore #if 0 the special code for + finding solitary registers that aren't suitable for groups. + But fix two bugs in it: braino deciding whether a reload + is looking for 1 register (not a group). Use CLASS_MAX_NREGS. + Also braino deciding whether a spill reg can be in a group. + Did not fix bug that it fails to test HARD_REGNO_MODE_OK, + so it might split up an even-odd pair. + + * vax.md: Special patterns for 8 and 16-bit fields, to make + move-insns (like the ones for the 68k). + + * tree.c (convert_to_integer): Pass truncation down thru COND_EXPR + as through a binary operator. + + * typecheck.c (build_cond_expr): If unpromoted operand types match, + don't promote them--let containing expression promote (just once). + +Tue May 24 14:46:26 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * combine.c (subst): Simplify (subreg (sign_extend X) 0). + + * tm-hp9k320.h: Delete NO_DBX_FORMAT. + * Most tm...h files: Define DBX_DEBUGGING_INFO. + * dbxout.c: Change conditional to DBX_DEBUGGING_INFO. + + * integrate.c (expand_inline_function): If inline fcn was declared to + return QI, but actually computes an SI, use SImode for INLINE_TARGET + but actually return a QI. + + * varasm.c (force_const_mem): Failed to determine alignment bdry + from machine mode. + + * jump.c (jump_optimize): Don't delete (move X Y) if X or Y is a + PRESERVE_DEATH_INFO_REGNO_P register. + + * final.c (output_addr_const): In PLUS, output constant term last. + + * final.c (final): Before outputting an insn, do FINAL_PRESCAN_INSN. + + * final.c (next_block_index): No longer static. + (final): Add SDB_DEBUGGING_INFO cases for outputing NOTEs + for beginning and end of a block. + (output_source_line): Add SDB_DEBUGGING_INFO case for line number. + * varasm.c (assemble_function): Add code for SDB symbol output. + + * gnulib.c: Allow config to override INTIFY. + New macro SFVALUE for data type to return a single-float in. + + * combine.c (remove_death): No longer `static'. + + * reload1. (choose_reload_targets): PRESERVE_DEATH_INFO_REGNO_P + selects hard regs for which death info should be updated for final. + + * reload1.c (reload_as_needed): Let INSN_CLOBBERS_REGNO_P + prevent inheritance of certain reloads. + + * reload.c (find_equiv_reg): Let OVERLAPPING_REGNO_P reject + an equiv reg. Needed for funny float regs on 80387. + + * cccp.c (do_ident): Define #ident as a no-op if IDENT_DIRECTIVE. + Warn if pedantic. + (do_sccs): Warn if pedantic. + + * emit-rtl.c (restore_reg_data): Set cur_insn_uid--prevent duplicates. + +Sun May 22 12:25:06 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * Version 1.22 released. + + * reload1.c (reload): Spilling isn't finished till max_nongroups is 0. + + * tm-encore.h (PRINT_OPERAND): No `$' before a CONST. + +Sat May 21 13:08:54 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * fold-const.c (combine): Typo in MIN_EXPR, MAX_EXPR. + + * reload1.c (reload): Was counting insn_groups as total size of groups, + not number of groups. + A new spilled group counts against group-needs of superclasses. + + * parse.y (parmlist{,_or_identifiers}_1): In error case, + return a tree list just as in the other cases. + +Fri May 20 02:14:51 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * config-vax.h, config-m68k.h: If __GNUC__, use builtin-alloca. + + * genpeep.c (match_rtx): Generated code was testing the wrong rtx + when testing an int or string at a nonzero index in the rtx. + + * reload.c (find_reloads): Typo checking `modified' for conflict + with an earlyclobber. + + * reload.c (find_equiv_reg): Reject stack ptr as return value. + + * expr.c (expand_builtin): Alloca must do pending stack adjust. + +Thu May 19 13:01:01 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * flow.c (propagate_block): Skipping back across libcall didn't happen + due to failing to set PREV. + + * expr.c (emit_library_call): Code to increment and decrement + current_args_size broke since emit_call_1 was changed to restore it. + + * combine.c (try_combine): When i1 or i2 auto-incs a reg, don't combine + if i3 uses that reg. + + * config-hp9k3.h: #define bcopy, bcmp, bzero here. + * conf-hp9k320.h: Delete file. + + * integrate.c: Don't include strings.h--no need. + + * stmt.c (expand_asm_operands): Don't make zero-length vectors. + + * loop.c (scan_loop): After a fcn call, maybe-trap insns can't move. + The fcn call might exit and that would prevent the trap. + + * reload1.c (reload): Set reload_first_uid to next uid to be used. + * reload.c (find_equiv_reg): Use reload_first_uid to ignore insns + that are due to reloading--only if reload_reg_p is not 0 or 1. + +Wed May 18 22:11:20 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * typecheck.c (build_unary_op): Don't complain about array + as argument to `!'. + + * decl.c (pushdecl): If locally declaring an extern function, + check the identifier's global value in case it's an inline function. + +Mon May 16 03:06:08 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * output-ns32k.c (output_shift_insn): New fn, maybe turn shift to adds. + (reg_or_mem_operand): Predicate for a non-immediate general_operand. + * tm-ns32k.h (CONST_OK_FOR_LETTER_P): Define letter K. + * ns32k.md: Use output_shift_insn for various addr insns that shift. + Don't allow nonexplicit constants in lprd, multiply or truncate insns. + Use reg_or_mem_operand for constraint in op1 of divide insns; + a constant there causes regclass to screw up. + Split alternative constraints on the bit-field insns to avoid + out-of-range operands in exts, inss. Some cases of extraction + can be done faster via memory. + + * flow.c (mark_set_1): When adding a REG_DEAD note, inc reg_n_deaths. + + * dbxout.c (dbxout_type_def): Do nothing for {integer,char}_type_node. + +Sun May 15 00:56:44 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * tm-sequent.h, tm-ns32k.h, tm-encore.h (PRINT_OPERAND): + Was treating SF's as SI's. + + * expr.c (emit_move_insn): Check all CONST_DOUBLEs for + LEGITIMATE_CONSTANT_P and put them in memory if not. + + * local-alloc.c (combine_regs): Allow a reg to be tied to a qty + if the reg's class is contained in the qty's class + (as well as if the reg's class contains the qty's class as before). + Rename qty_reg_class to qty_min_class and make it the smallest + class of any reg tied to the qty. + (reg_class_subset_p, reg_meets_class_p, update_qty_class): + New subroutines to implement this. + (local_alloc): Init reg_qty to -1 for pseudos not in cur. basic block. + (reg_is_born): Abort if pseudo not in basic block has -2 in reg_qty. + + * jump.c (rtx_renumbered_equal_p): Insist that modes of REGs match. + +Sat May 14 01:05:35 1988 Richard Stallman (rms at lucky-charms.ai.mit.edu) + + * stmt.c (expand_return): Empty frame frame_offset isn't nec. 0. + + * expr.c (emit_call_1): Use stack_size_rtx everywhere appropriate. + + * decl.c (init_decl_processing): Set sizetype to `unsigned long' + if `int' is less than a word. + + * stddef.h (size_t, ptrdiff_t): Both are now long. + +Fri May 13 01:06:00 1988 Richard Stallman (rms at lucky-charms.ai.mit.edu) + + * emit-rtl.c (gen_lowpart): Handle non-lowpart subreg as arg. + + * recog.c (register_operand): VOIDmode means allow any mode. + (immediate_operand, nonmemory_operand): Likewise. + + * emit-rtl.c (classify_insn): Update for changed CALL_INSN format. + (emit): New function to emit an rtl pattern as the right kind of insn. + * jump.c (simplejump_p): No longer static. + + * genemit.c (gen_expand): For match_operand at top level, call `emit'. + Use `emit_call_insn' when appropriate. + (gen_exp): Handle rtx's that contain strings. + + * final.c, symout.c: If not NO_DBX_FORMAT, include stab.h to get the + N_... symbols. Use their default definitions only if they're undef. + + * expr.c (expand_call) [no PUSH_ROUNDING]: Always set argblock + if there are any stack-passed arguments. + + * typecheck.c (build_unary_op): Mark all increment-exprs volatile. + + * recog.c (reg_renumbered_fits_class_p): Delete private copy of + reg_class_contents. + + * reload1.c (forget_old_reloads): Handle PARALLEL case by recursion. + Explicit store into a spilled reg invalidates old reloaded contents; + this can occur when we drop through into a basic block whose need was 0 + (and so whose local pseudos were not spilled). + + * gcc.c (main): If -v, print gcc's own version; also no error msg + if no input files. + + * loop.c (may_trap_p): Mem ref to nonconstant address may trap. + (scan_loop): Check may_trap_p only when insn is in other respects ok. + + * cexp.y: #include config.h (for decl of alloca on some machines). + +Thu May 12 17:24:19 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * regclass.c (regclass): When inserting an insn at start of block, + update basic_block_head. + +Wed May 11 00:47:09 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * stmt.c (assign_parms): DECL_OFFSET should be offset as passed + (not including big-endian width-change correction). + + * typecheck.c (shorten_compare): Set unsignedp[01] right in case + where get_narrower makes no change. + (build_binary_op_nodefault): Likewise for shortening shifts. + + * stmt.c (expand_end_case): Use type_for_size to get the type + to convert the index to, since `int' is wrong if -mshort. + + * decl.c (grokdeclarator): Don't check PARM type for completeness. + (grokparms): If fn definition, check all parm types for completeness. + (store_parm_decls): Likewise. + +Tue May 10 22:42:13 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * typecheck.c (store_init): For invalid init, store error_mark_node. + * varasm.c (assemble_variable): Ignore error_mark as an init. + * stmt.c (expand_decl): If init is error_mark, init to 0 if possible. + This avoids a spurious "uninitialized variable" warning. + +Sun May 8 17:08:07 1988 Richard Stallman (rms at lucky-charms.ai.mit.edu) + + * tm-hp9k320.h: Define STRUCTURE_SIZE_BOUNDARY. + + * decl.c (get_parm_info): Replaces get_parm_types. Returns a tree_list + containing parmdecls and tag list as well as type list. + (grokparms): Accept that tree_list as argument. + (grokdeclarator): Calling grokparms, say "not a definition" for the + function declarators for arg or value types within a definition. + + * parse.y: Call get_parm_info. + (parmlist_or_identifiers): If identifiers, make a tree_list + like the one get_parm_info returns. + +Fri May 6 16:44:19 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * m68k.md (casesi): Delete template aside from match_operand's. + + * tm-encore.h: New file from Robert Brown. + + * ns32k.md: Use %c in some addr insns. + (tst*): Use {d,f,}const0_rtx to make the constant 0; OS-independent. + (call, call_value): Use %? before address in a bsr. + + * output-ns32k.c (print_operand_address): To output a local label, + use `output_asm_label'. + Make SEQUENT_ADDRESS_BUG conditionals happen at compile time. + + * tm-ns32k.h: Delete SEQUENT_HAS_FIXED_THEIR_BUG. + (PRINT_OPERAND): Output nothing for `%?'. + * tm-sequent.h: (PRINT_OPERAND): Output nothing for `%?'. + + * final.c (output_asm_label): No longer `static'. + +Thu May 5 09:03:37 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * explow.c (memory_address): Ignore flag_force_reg unless optimize. + Also ignore it for addresses of stack slots (avoid invalid REG_EQUIVs). + + * typecheck.c (digest_init): If traditional, allow `char x[100]=0;'. + + * tree.c (get_unwidened): Don't alter a COMPONENT_REF if + innerprec equals the precision of the existing type. + It was changing pointers to integers. + + * m68k.md (movdi): Put all fpregs in separate constraint alternatives + and handicap them so spill reg won't be an fp reg. + + * parse.y (yyerror): Use the arg as part of the error message. + + * decl.c (start_function): Give the RESULT_DECL type int rather + than char or short. + * typecheck.c (c_expand_return): Convert value from fn's return type + to the RESULT_DECL's type. + + * Avoid generating dbx xrefs to enums, since dbx loses on them. + Do this by outputting all types in order of definition. + This is done only for top-level types; problem remains for local ones. + + * decl.c (finish_decl): Do rest_of_decl_compilation for TYPE_DECLs. + * toplev.c (rest_of_decl_compilation): Do dbxout_symbol for them. + + * dbxout.c (dbxout_symbol): Check DECL_RTL only for fns and variables. + For a TYPE_DECL, ignore it if the type was already output + and its preferred name is the TYPE_DECL. Else output type in full. + + * decl.c (pushdecl): Don't prefer typedef names to type tag names. + + * stor-layout.c (chain_type): Build chain in forward order. + + + * tm-3b1.h (ASM_OUTPUT_CASE_LABEL): Error getting length of table. + + * tm-3b1.h: #define SGS_3B1 was missing. + + * typecheck.c (build_compound_expr): Ignore non-volatile subexprs. + + * fold-const.c (fold): Simplify (unsigned) foo >= 0, etc. + + * stor-layout.c (layout_type): Set TYPE_PRECISION of ptr types. + +Wed May 4 08:06:25 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * parse.y: Don't use the Bison @ construct, since it makes parser slow. + + * decl.c (finish_function): Delete FILENAME and LINE args. + + * typecheck.c (digest_init): No pedantic warning for array="string". + +Tue May 3 09:09:30 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * toplev.c (main): Ignore `-Wcomment'. + * gcc.c: Pass -Wall to cpp (which treats it like -Wcomment). + + * tm-isi68.h: Greatly simplified; now works only with GAS. + + * tm-m68k.h (EMPTY_FIELD_BOUNDARY): now 16 (right on Sun, ISI and HP). + * tm-sun3.h: No need to redefine it. + + * decl.c (finish_struct): Don't ever make DECL_ALIGN smaller. + + * decl.c: Rename min, max to MIN, MAX. + + * typecheck.c (convert_for_assignment): Avoid warning if assigning + a `void *' from a `const void *'. + + * combine.c (FAKE_EXTEND_SAFE_P): Turn off for mem refs; avoid faults. + +Mon May 2 07:28:27 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * tm-vax.h: Support -mg switch to use g-float instead of d-float. + New macros TARGET_G_SWITCH, ASM_DOUBLE_CHAR. + Changes in TARGET_SWITCHES, ASM_OUTPUT_DOUBLE. + Define code `#' for PRINT_OPERAND. + * vax.md: use `#' in opcodes for doubleword float. + + * tm-vax.h: Define UDIVSI3_LIBCALL and UMODSI3_LIBCALL. + + * cccp.c (main, do_include): Implement -I- switch. + + * jump.c (jump_optimize): When hunting NOTE_INSN_FUNCTION_END, + skip final RETURN (found on the vax). + + * toplev.c (main): -Wall is equiv to all -W switches combined. + + * stmt.c (expand_decl, expand_end_bindings, + expand_{start,end}_function). The -noreg treatment of `register' vars + is extended to vars used as addresses of vars in memory (varying-size + structures). + (use_variable): Emit USE for regs used in specified rtx. + + * cse.c (fold_cc0): Stack-frame addresses are always nonzero. + (fold_rtx): 0200 bit in prev_insn_cc0 means only zeroness is known. + + * parse.y (parmlist): poplevel needs 3 args. + +Sun May 1 07:20:34 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * decl.c (start_function): typo checking for incomplete return type. + + * emit-rtl.c (restore_reg_data): If a pseudo appears nowhere, + don't leave its slot empty; create a pseudo for that slot. + + * Version 1.21 released. + + * expr.c (expand_call): Merge duplicate code for structure_value_addr. + + * emit-rtl.c (restore_reg_data): Delete error check; it's legit for + a pseudo reg to appear nowhere in the rtl. + +Sat Apr 30 07:35:31 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * integrate.c (copy_rtx_and_substitute): Fix typo for arg_pointer_rtx. + + * decl.c (poplevel): Undo previous change with #if 0. + + * stmt.c: `struct nesting' now records the depth on the stack. + Each expand_start... must update and record the depth; + each expand_end... uses macro POPSTACK to pop. + This way, if a level isn't explicitly popped, it won't cause + circular structure. + + * dbxout.c (dbxout_type): Replace with main variant only if incomplete. + + * typecheck.c (build_unary_op): Test of `pedantic' was backwards. + + * expr.c (STACK_BYTES): Typo in definition. + + * typecheck.c (build_binary_op_nodefault): Rename code1 to code0, + and likewise for code2, tt1, tt2. + + * expr.c (expand_call): Wrong arg order for warning_with_decl. + +Fri Apr 29 08:41:06 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * integrate.c (copy_decl_tree): New arg is depth in recursion. + Always discard the outermost LET_STMT being copied; never discard any + others. This way the copied LET_STMTs correspond to the copied NOTEs. + + * varasm.c (decode_rtx_const): For SYMBOL_REF, use string address + not address of the rtx. Library fns have only one copy of the name + but many copies of the SYMBOL_REF. + + * expr.c (emit_call_1): New arg OLD_ARGS_SIZE is used to reset + current_args_size. + (emit_library_call, expand_call): Pass new arg; don't restore it here. + + * flow.c (life_analysis): Don't mark sp live at end if fn is empty. + + * parse.y (parse_or_identifiers_1): Handle `error' in here, not in + callers notype_declarator etc. Also read the closeparen here. + +Thu Apr 28 12:43:52 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * expmed.c (expand_shift): In extzv strategy, handle the operand + predicates for operands 0, 1 and 3. (Not needed for 2.) + * vax.md: extzv pattern for SImode op1 must recognize general_operand + since the pattern named "extzv" allows them. + +Wed Apr 27 00:52:44 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * expr.c (emit_call_1): New arg NEXT_ARG_REG describes # regs + used for passing args. + (emit_library_call, expand_call): Provide that argument. + + * explow.c (round_push): New fn: round arg up to STACK_BOUNDARY. + * expr.c (expand_builtin): Use round_push on size for __builtin_alloca. + * stmt.c (expand_decl): Likewise for variable-size objects. + * expr.c (expand_call): Likewise for args_size.var. + Also use STACK_BOUNDARY to round a constant arg-block size. + Pass emit_call_1 that rounded value. + (emit_library_call): Round arg_size with STACK_BOUNDARY. + * tm-spur.h: Define STACK_BOUNDARY instead of ROUND_CALL_BLOCK_SIZE. + * tm-m68k.h: Define STACK_BOUNDARY as 16. + + * expr.c (emit_call_1): Don't change current_args_size. + (emit_library_call, expand_call): Always restore current_args_size + to ambient value, after calling emit_call_1. + + * tm-hp9k320.h: Don't define USG here. + * config-hp9k3.h: New file. USG defined here. + + * tm-3b1.h: #undef ASM_OUTPUT_ASCII (a defn came from tm-hp9k320.h). + + * decl.c (grokdeclarator primarily): Cast all RID_... to (int) before + using them in arithmetic. Placates CC on Sequent. + + * emit-rtl.c (emit_jump_insn): Return proper value, for a SEQUENCE. + * emit-rtl.c (emit_call_insn): Handle SEQUENCE like emit_jump_insn. + +Tue Apr 26 02:41:26 1988 Richard Stallman (rms at lucky-charms.ai.mit.edu) + + * cccp.c (macroexpand): If traditional, don't disable called macro. + (macarg1): Was failing to count backslash-newline inside a string + in a macro arg as part of file's linenumber. + +Mon Apr 25 18:46:53 1988 Richard Stallman (rms at lucky-charms.ai.mit.edu) + + * jump.c (jump_optimize): Don't do April 20 optimization on first + iteration; let other simpler opts be done before this is considered. + +Sun Apr 24 02:45:28 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * tree.c (staticp): a CONSTRUCTOR can be static. + + * varasm.c (output_constant_def): Always return memref, not address. + + * decl.c (complete_array_type): New fn, make an array type complete + based on an initializer. + (finish_decl): Use complete_array_type. + * parse.y (expr_no_commas): When parsing a constructor, + Use complete_array_type on constructors for incomplete array types. + + * typecheck.c (digest_init, store_init_value,process_init_constructor): + It's now TREE_STATIC, not TREE_ADDRESSABLE, that records that all elts + in a CONSTRUCTOR are simple constants. + (digest_init): A CONSTRUCTOR with non-null type is treated as ordinary + expression, not as a braced initializer. + Allow init of an array from an array-valued expr; warn if pedantic. + * expr.c (expand_expr, CONSTRUCTOR case): Put in memory only if static. + Was making an extraneous level of MEM; output_constant_def does it all. + + * typecheck.c (build_unary_op): Allow ADDR_EXPR of static CONSTRUCTOR. + (default_conversion): Likewise. + (initializer_constant_valid_p): Constructor is ok if static. + + * gcc.c: Change -fnostd... to -nostd... + * cccp.c (main): Likewise. + + * Everywhere: Use REG_NOTE_KIND to get the kind of a reg note. + + * rtl.c (find_regno_note): New function. + * flow.c (flow_deadp): Deleted; caller uses find_regno_note. + * global-alloc.c (reg_dead_p): Deleted. + (global_conflicts): Use find_regno_note instead of reg_dead_p. + + * final.c (final) Use find_reg_note to look for a REG_INC. + * combine.c (insn_has_inc_p): deleted; callers use find_reg_note. + (try_combine): Use find_reg_note whenever looking for a REG_INC. + (regno_dead_p, remove_death): Check the REG_NOTE_KIND before assuming + that the datum in it is a REG. + * reload1.c (reload): Use find_reg_note to find a REG_EQUIV. + + * gcc.c: Don't delete .o files if not all compilations succeed. + (record_temp_file): New arg SUCCESS_ONLY--delete file only if succeed. + (delete_temp_files): New arg SUCCESS says compilation succeeded. + (store_arg): Now 3 possibilities for arg TEMPNAMEP; 2 = del on success. + (do_spec_1): For %d, set delete_this_arg to 2. + + * decl.c (poplevel): Warn about any still-incomplete type-tags. + +Sat Apr 23 02:54:16 1988 Richard Stallman (rms at rice-krispies.ai.mit.edu) + + * expr.c (expand_builtin): For alloca, round arg up to multiple + of PARM_BOUNDARY. Also to convert it to Pmode unless it already is. + + * stor-layout.c (layout_union): Bug in 14 April change: + use caller-specified alignment as minimum, not as maximum. + + * parse.y (skip_white_space): Avoid infinite loop on unterm. comment. + +Fri Apr 22 00:22:59 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * cccp.c: Text following #else or #endif is just a warning. + (rescan): Digit-case was dropping into the $-case; reorder. + + * cccp.c (rescan): Comment start when -traditional was output as + `/*'; should be nothing. + + * jump.c (jump_optimize): Fix prev change: + do nothing if range1end == range2end; + don't lose any NOTEs when splicing. + + * flow.c (propagate-block): For CALL_INSN, clobber the call-used regs + only after mark_set_regs is done; avoids confusion about lifespan + of function value reg. + + * gcc.c: Pass -Wcomment to cpp. + + * cccp.c (main, rescan): If -Wcomment, warn if `/*' inside comment. + + * decl.c (duplicate_decls): Ignore `inline' decl following definition. + + * m68k.md (casesi): Split it up into subroutines, so insns emitted + by the call to memory_address (on 68000) come in the right place. + + * combine.c (record_dead_and_set_regs): Notice storing in a SUBREG. + + * integrate.c (expand_inline_function): Insn to copy a subroutine's + return-value was being output twice, once incorrectly. + + * reload.c (find_equiv_reg): A stack-push insn does not invalidate + an equiv for a goal in memory. + Any other write to memory does invalidate any goal in memory + (PARALLEL case failed to check for this). + + * expmed.c (expand_shift): In the extzv clause, force shifted value + out of memory if -fforce-mem. + + * print-tree.c (prtypeinfo): Some attributes were missing. + (dump): In ..._TYPE nodes, ignore the TREE_CHAIN field. + + * cse.c (note_mem_written): Pushing on stack does not invalidate mem. + + * vax.md (extv/andl peephole opt): Made incorrect code if output was + pushed on stack. Added special case code. + (extv, extzv for SImode operand): Require register_operand. + +Thu Apr 21 00:24:52 1988 Richard Stallman (rms at corn-chex.ai.mit.edu) + + * stmt.c (assign_parms): Round current_function_pretend_args_size up. + + * integrate.c: `pushlevel' arg was missing. + + * dbxout.c (dbxout_type): Undo rest of March 29 change: + When a named type is first seen inside another type, output an xref + and let the real definition come out later. + It is strange that Sun dbx has sometimes appeared to demand + one strategy and sometimes appeared to demand the other. + + * typecheck.c (convert_for_assignment): Allow conversion to or from + `const void *', etc., unless pedantic. + + * decl.c (get_parm_types): For `foo (void){}', set last_function_parms + to nil so store_parm_decls won't lose. + + * combine.c (subst): (plus (plus X N) -N) => X. + + * explow.c ({anti_,}adjust_stack): Don't make a copy of + `stack_pointer_rtx'. + + * integrate.c (expand_inline_function): Typo testing for the + USE that indicates a CALL_INSN's value is being returned. + + * expr.c (expand_builtin, alloca case): Copy arg to reg before + adjusting stack, to avoid invalid insns on some machines. + +Wed Apr 20 00:15:14 1988 Richard Stallman (rms at rice-krispies.ai.mit.edu) + + * typecheck.c (build_binary_op_nodefault): When shortening, + get_narrower may make no change because ARGn is already narrow. + In this case, set UNSIGNEPn from ARGn's type. + + * typecheck.c: Rename ARG1,ARG2 to ARG0,ARG1, etc. in several fns. + + * tm-vax.h: Turn off continuation on DBX output. + + * typecheck.c (build_function_call): Don't change __builtin_ffs to an + FFS_EXPR. Note that __builtin_alloca has always made a CALL_EXPR. + * expr.c (expand_builtin): New function expands all CALL_EXPRs that + are really built-in functions. + (preexpand_calls): Do nothing to a CALL_EXPR for a built-in function. + + * loop.c (count_loop_regs_set): Don't move a reg that is in a CLOBBER. + + * stupid.c (stupid_mark_refs): Was getting hard reg's mode from + the wrong place. + + * rtl.c (note_stores): Typo in checking vector elt for SET vs CLOBBER. + + * stmt.c (expand_end_bindings): If restoring stack level, + first do pending stack adjust (so it won't be done erroneously after). + (expand_goto): likewise. + + * rtl.h: LABEL_NUSES was an rtx. It should be an int. + * stmt.c (expand_label, expand_goto): Delete frobbing with LABEL_NUSES; + the value stored there was the same as the CODE_LABEL rtx. + + * jump.c (jump_optimize): Detect if (foo) ...; else { ... break;} + and change to if (! foo) { ... break;} else ...; so can drop out. + (next_label): New fn returns the next label after given insn. + +Tue Apr 19 21:30:05 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * flow.c (insn_dead_p): Delete special handling for stack ptr. + (mark_set_regs, mark_used_regs): Likewise. + (life_analysis): Mark stack ptr live at end of fn if necessary. + (propagate_block): Mark stack ptr live leading up to a CALL_INSN. + + * jump.c (jump_optimize): #if 0 around stack-adjust-deletion code. + + * cse.c (fold_rtx): Change const_arg from an array to 3 separate + scalars for the first three operands. + Handle SIGN_EXTEND and ZERO_EXTEND. + + * integrate.c (copy_rtx_and_substitute): If arg is 0, return 0. + (expand_inline_function): Separate vars for old pattern and new insn. + + * expr.c (expand_call): Set TREE_ADDRESSABLE if call is not inlined. + +Tue Apr 19 02:25:22 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * Version 1.20 released. + + * tm-ns32k.h: Define new reg class GEN_OR_FLOAT_REGS + so that GENERAL_REGS and FLOAT_REGS have a union. + + * tm-ns32k.h (GO_IF_LEGITIMATE_ADDRESS): Recognize a stack-push. + * ns32k.md: Many constraints must now allow or reject pushes. + Delete the special patterns for pushing. + +Mon Apr 18 06:02:39 1988 Richard Stallman (rms at rice-krispies.ai.mit.edu) + + * reload1.c (forget_old_reloads): For a multiword hard reg, + forget old reloads for each word. + + * reload.c (find_reloads): Typo in calling push_replacement. + + * tm-ns32k.h (HARD_REGNO_MODE_OK): Failed to allow fp regs for SFmode. + +Sun Apr 17 01:21:35 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * tm-sequent.h (PRINT_OPERAND): Handle absolute integer memaddress. + + * ns32k.md: Add DImode push insns. Add QImode and HImode push insns. + Supply missing statement in movsf. + + * dbxout.c (dbxout_type): Don't contin before 1st field of struct. + + * dbxout.c (dbx_continue): Use DBX_CONTIN_CHAR instead of backslash. + + * loop.c (scan_loop): Ov vax, the "loop-entry jump" can be a return, + in which case perhaps there is no label following it. + Detect phoniness of loop before looking for that label. + + * decl.c (init_decl_processing): Builtin fn names start with `__'. + + * typecheck.c (shorten_compare): Warn about constant result only in + cases like (char)x < 0x80, where old C compilers made it -0x80. + + * vax.md: All jbs/jbc/jlbs/jlbc patters with op0 in SImode + must reject mode-dependent memory addresses. + + * recog.c (mode_independent_operand): Test for general operand + that doesn't have a mode-dependent memory address. + + * varasm.c (assemble_function): ASM_DECLARE_FUNCTION_NAME, if def, + is now responsible for outputting the function name as a label. + +Sat Apr 16 05:02:55 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * cccp.c (do_xifdef): Warn about punctuation or other junk in argument. + Warn about no argument. If pedantic, warn if arg starts with digit. + If traditional, ignore all after first non-idchar and never warn. + +Thu Apr 14 01:12:59 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * integrate.c (expand_inline_function): Typo for addressable parms. + + * cse.c (insert_regs): Copying half a DImode into half of another + does not make the two DImode regs equivalent. + + * recog.c (general_operand): Was failing to accept symbol_ref:SI + when MODE arg was VOIDmode. + + * expr.c (preexpand_calls): For RTL_EXPR, do nothing. + + * decl.c (start_enum, build_enumerator): Remember default for next one + as a tree node (so the high-half isn't lost in a negative one). + + * stor-layout.c (layout_{record,union}): Pay attn to initial value + of TYPE_ALIGN in computing final alignment. + (layout_union): Round size up to multiple of the alignment. + + * decl.c (finish_struct): Don't alter size after type is laid out. + Instead, set TYPE_ALIGN before layout_type. + + * reload1.c (choose_reload_targets): Introduce reg_has_output_reload. + If there are two separate reloads (one in and one out) + for the same (hard or pseudo) reg, always set reg_last_reload_reg + based on the output reload. + +Wed Apr 13 21:26:16 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * reload.c (find_reloads_address_1): Always barf if a "constant" + register is autoincremented. + + * parse.y (structsp): suspend_momentary before start_enum; + else some nodes made by start_enum might be momentary. + + * stmt.c (expand_start_case): New arg is nominal type for comparison + (which is the promoted type of the index expression). + (pushcase): Always convert VALUE to that nominal type + before validating it. + * parse.y (case stmt): Promote each case-value before pushcase. + * typecheck.c (c_expand_start_case): Promote the index-expr + to determine the nominal type, before get_narrower. + +Wed Apr 13 12:43:08 1988 Chris Hanson (cph at kleph) + + * tm-hp9k320.h: Define ASM_FORMAT_PRIVATE_NAME. HPUX asm forbids + `.' in identifiers, so use `___' (there is some danger in this choice). + +Tue Apr 12 23:26:48 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * local-alloc.c (block_alloc): Make 1 extra slot in regs_live_at. + + * stmt.c (optimize_bit_field): Function moved from reload1.c. + When need to generate a SIGN_EXTEND or ZERO_EXTEND, make it a separate + insn and use gen_extend_insn to make it. + * optabs.c (gen_extend_insn): New fn, construct body of an insn + to extend Y and store in X. + +Mon Apr 11 19:20:57 1988 Richard Stallman (rms at rice-krispies.ai.mit.edu) + + * decl.c (finish_decl): Error if static var has variable size. + + * parse.y (yylex): Warn if int const is out of range. + + * parse.y: New keyword __alignof. + * typecheck.c (c_alignof): Given a type, return its alignment in bytes. + + * typecheck.c (c_sizeof{,_nowarn)): Don't return integer_one_node; + use build_int to make sure we get something with type `sizetype'. + + * Support variable-sized structures (containing var-sized arrays). + + * stmt.c (assign_parms): Handle parms whose size varies. + Use `memory_address' when constructing memrefs to args; + no need to set `invalid_stack_slot'. + Don't make a REG_EQUIV note for a scalar arg at variable offset. + * stor-layout.c (genop, build_int): No longer `static'. + + * stor-layout.c (convert_units): Optimize ceil (ceil(x,2)*2, 4) etc. + + * stmt.c (expand_decl): Don't abort if var-sized object has init. + Convert variable size from units of DECL_SIZE_UNIT to units of bytes. + + * expr.c (emit_push_insn): Arg ARGS_SO_FAR is now an rtx. + Pay attention to ARGS_ADDR even if machine has push insns. + (expand_call): Handle variable-sized arguments. + If have any such, push entire arg-block in advance. + Record each arg's offset during first loop and don't change args_size + during the actual pushing loop; this way the actual pushing loop + works regardless of arg-order if arg-block was pushed in advance. + (push_block): Copy SIZE to reg unless it's a reg or constant. + + * expmed.c (expand_divmod): If converting CEIL_DIV to FLOOR_DIV, + make new pseudo for incremented value, to help cse understand. + +Sun Apr 10 00:07:45 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * expr.c (emit_library_call): Two dumb bugs calling emit_call_1. + + * dbxout.c (dbxout_symbol): Handle case of (MEM (REG frameptr)). + + * cccp.c (skip_if_group): Ignore quote-chars if -traditional. + (rescan): If -traditional, don't output a space for a comment. + (handle_directive): If not -traditional, output a space for a comment. + +Sat Apr 9 21:26:51 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * decl.c (get_parm_types): `void' type is error, except as entire list. + * parse.y (parmlist_1): `void,...' is error. + + * typecheck.c (pointer_int_sum, pointer_diff): + Use an integer type with at least POINTER_SIZE bits. + * expr.c (expand_expr, ARRAY_REF): Likewise. + * tree.c (type_precision): Prec of a pointer is POINTER_SIZE. + (convert_to_pointer): Directly convert any int w/ width==POINTER_SIZE. + Other int types convert via an int of that width. + (convert_to_integer): Pointers convert via an int of that width. + + * decl.c (init_decl_processing): Use INT_TYPE_SIZE, if def, + to set width of `int' and `unsigned int'. + (make_index_type): Give new type the width of a long int. + + * tm-m68k.h: Add new -mshort which controls TARGET_SHORT. + * tm-m68k.h: Define INT_TYPE_SIZE depending on TARGET_SHORT. + +Fri Apr 8 05:02:59 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * typecheck.c (require_complete_type): Fix typo in detection of `void'. + (build_function_call): Fix backward test to allow `void' values. + + * dbxout.c (dbxout_tags): Output each tag once even if type is defined. + + * m68k.md (movstrictqi): Reject addr-reg always, for both operands. + + * tm-vax.h (STRUCTURE_SIZE_BOUNDARY): Make this always 8, for BSD. + * tm-ultrix.h: New file, overriding STRUCTURE_SIZE_BOUNDARY. + [This change has been taken out; tm-ultrix.h is now equivalent to + tm-vax.h. I must have been confused when testing PCC.] + + * integrate.c (expand_inline_function): Don't let inline_target + be nonzero in BLKmode. + + * decl.c (grokdeclarator): Const array parm becomes ptr-to-const. + +Thu Apr 7 05:02:41 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * genoutput.c (bcopy, bzero): Renamed to mybcopy, mybzero + so variation in C library and config.h won't affect the results. + * genrecog.c (bzero): likewise. + * genextract.c (bcopy): Fn deleted; used only in a string constant. + + * varasm.c (force_const_mem): Fix typo in arg decl. + + * toplev.c (compile_file): init_file with main_input_filename + so dbx output doesn't lack N_SOL symbols. + + * cccp.c (rescan) [CPLUSPLUS]: Put out // comments as // comments. + +Wed Apr 6 14:06:38 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * expr.c: Delete SLOW_ZERO_EXTEND conditionals added March 3. + Now that enums types can be unsigned, this isn't needed. + + * emit-rtl.c (emit_jump_insn): Handle SEQUENCEs. + + * genemit.c (gen_expand): Use emit_jump_insn, emit_label, emit_barrier + when the insn rtl requires it. + + * m68k.md (subsi3): Prefer to avoid reverse-subtraction alternative. + + * stmt.c (expand_end_case): Let CASE_DROPS_THROUGH control what to + emit after the table. + * tm-vax.h: Define CASE_DROPS_THROUGH. + +Tue Apr 5 15:47:10 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * genemit.c (gen_exp): Handle vectors within exprs. + + * stmt.c (expand_end_case): Pass 5th arg (default_label) to gen_casesi. + * m68k.md: Define casesi insn rather than tablejump insn. + + * cccp.c (skip_if_group): For validate_else, pass BP (end of cmd name). + Don't call validate_else if do_else or do_endif will detect error. + + * Bug: inline fcns can refer to the return reg with a strict_low_part + which confuses expand_inline_function. Fix is to change return reg + into inline_target *everywhere* except in or right after a call. + * integrate.c (copy_rtx_and_substitute): Delete special case for SET. + Replace return-value hard regs with INLINE_TARGET in all contexts. + (expand_inline_function): special handling for insn after a CALL_INSN + if it copies the function value out. + Allow notes and stack adjust insns to intervene + between the CALL_INSN and the value-copy. + + * expr.c (emit_call_1): New name for gen_call_1. + + * Bug: ({...}) insns were in wrong place for a subexpression + after a sequence point, as in x ? y : ({...}). + * tree.def: New tree-code RTL_EXPR holds a sequence. + * expr.c (expand_expr): Handle RTL_EXPR by emitting the sequence. + * stmt.c (expand_{start,end}_stmt_expr): Use emit_to_sequence + to make a sequence from everything within the ({...}). + (expand_{start,end,emit}_delayed_expr): Delete these functions. + * parse.y (`for'-statements): Don't call them; nothing special needed. + + * parse.y (yylex): Handle syntax L"..." and L'...' + (combine_strings): Handle wide strings being combined. + * typecheck.c (digest_init): Reject wide string as init for char array. + Allow it for an int array, but don't allow a narrow string. + * decl.c (init_decl_processing): New var int_array_type_node. + + * parse.y: Define keyword `noalias'. + * parse.h: Define RID_NOALIAS. + + * typecheck.c (compparms): Not all parmlists match an empty one; + call `compparms1' to filter them. + + * decl.c (groktypename): Remove special case for `void' as parameter. + (get_parm_types): Special case for list of one decl with type void. + + * decl.c (build_enumerator): Give enum constants the type `int'. + Variable `current_enum_type' eliminated. + (finish_enum): No need to repeat `fixup_unsigned_type' + since the precision has not changed. + * stor-layout.c (layout_type): Allow enum types to be unsigned. + + * emit-rtl.c (unshare_all_rtl): Unshare contents of all reg-notes. + + * parse.y (check_newline): filename is optional in #-lines. + +Mon Apr 4 14:36:54 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * typecheck.c (shorten_compare): When data type determines the value, + eval the nonconstant arg anyway if it has side effects. + (build_conditional_expr): When merging `foo *' with `void *', + also allow `const void *'. Result type has merged set of qualifiers. + (qualify_type): Merge qualifiers of two types. + + * decl.c (get_parm_types): Store any tags defined in parmlist + into `last_function_parm_types'. + (store_parm_decls): Add those tags into the current binding level. + + * parse.y (parmlist, parmlist_or_identifier): Pass 0 to pushlevel; + no binding levels in C should be transparent to tags. + + * 3b1 support: + * tm-3b1.h: New file. + + * m68k.md: Add HPUX_ASM conditionals for shift-by-24-and-compare. + In one of the dbra patterns, a HPUX_ASM conditional was backwards. + (movhi) [SGS_3B1]: Define the LI... label as in MIT syntax. + (addsi3) [SGS]: Syntax for base-displacement differs from MOTOROLA. + (subsi3) [SGS]: likewise. + (tablejump) [ASM_OUTPUT_CASE_LABEL]: Use 6, not 2, as displacement. + This assumes ASM_OUTPUT_CASE_LABEL on 68k is used for a `swbeg'. + + * final.c (final): Use ASM_OUTPUT_CASE_LABEL (if defined) to output + any CODE_LABEL followed by an ADDR_VEC or ADDR_DIFF_VEC. + It has 4 args; 4th is the insn which is the ADDR_VEC or ADDR_DIFF_VEC. + + * tm-*.h for 68000 (PRINT_OPERAND_ADDRESS): For unscaled indexing in + fetch from a branch table, use L and LI symbols as in the scaled case. + + * cccp.c: If SCCS_DIRECTIVE, define #sccs as no-op. + + * integrate.c (output_inline_function): Real start of function + is FIRST_PARM_INSN, not FIRST_FUNCTION_INSN. + + * tree.c (build_string): String contents must be saveable (for + inline fcn). + + * cse.c (cse_insn): Don't forget to set dest_hash_code when dest + is a stack slot (and so its address is not being optimized). + + * emit-rtl.c (restore_reg_data_1): reg_rtx_no must be 1+ largest REGNO. + + * m68k.md (non-SImode bit-field insns): Change constraint to "o,d" + so a nonoffsetable memref is handled by reloading its address + but a register can still be handled. + + * toplev.c (main): Execute OVERRIDE_OPTIONS, if it's defined. + +Sat Apr 2 00:55:21 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (convert_move): Handle a SUBREG in direct truncation case. + + * cse.c (lookup_for_remove): Don't test machine mode of registers: + Storing in (REG:SI 0) invalidates (REG:DF 0). + + * decl.c (pushlevel): New arg, nonzero means this level is for + variables only, not for tags. All calls changed. + (lookup_tag): Even if THIS_LEVEL_ONLY, skip variables-only levels. + (pushtag): Define it in the first non-variables-only level. + + * dbxout.c (dbxout_type): Undo Mar 29 change, in the DBX_NO_XREFS case. + So now each struct or union will contain only nameless cross-refs + to any others it uses. The prior change is still in effect when + DBX_NO_XREFS is not defined. + + * Implement variable array bounds for parameters. + * decl.c (poplevel): Don't crash if DECL_NAME gives 0. + * typecheck.c (comptypes): A variable array bound matches anything. + * parse.y (parmlist): Call pushlevel, then pushdecl each parm as it + is parsed; then poplevel after using get_parm_types to extract the + results of the parmlist. + * decl.c (get_parm_types): New function; reverse the current decls, + put them in last_function_parms, and return a list of their types. + (grokparms): Arg is now an idlist or a typelist. Do nothing if latter. + (push_parm_decl): New function, like {start,finish}_decl combined + for a parm in a parmlist. + + * dbxout.c (dbxout_symbol): Ignore sym if its DECL_RTL is 0. + + * symout.c (symout_block_symbols): Ignore sym if type is error_mark. + +Fri Apr 1 11:41:21 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (prepare_call_address): New function; given two rtx's + for function and context, copy the context to the right hard reg, + put the function address in the right place and return an rtx for it. + (gen_call_1): No longer do those things. Delete args CONTEXT, PROTECT. + (emit_library_call, expand_call): Call `prepare_call_address'. + In between that and `gen_call_1', USE the parm registers. + + * tm-hp9k320.h (ASM_OUTPUT_*): Flush uses of output_arith_constant. + + * varasm.c (assemble_variable): Use ASM_FORMAT_PRIVATE_NAME + to make the name for a local static variable. + * tm-m68k.h, tm-vax.h, tm-ns32k.h, tm-spur.h: + Define ASM_FORMAT_PRIVATE_NAME. Use `.', not `$', to separate. + + * tm-m68k.h, tm-ns32k.h (FIX_FRAME_POINTER_ADDRESS): + To refer to stack ptr, use stack_pointer_rtx, not a copy. + + * tree.c (build_real_from_string): Function deleted. + * parse.y (yylex): Use build_real and atof. + + * parse.y: Allow string concatenation in arg of asm. + + * parse.y (yylex): Always allow `$' in ident, but warn if pedantic. + * tm-vms.h: Delete DOLLARS_IN_IDENTIFIERS (no longer tested). + + * cccp.c (rescan, do_define, initialize_random_junk): + Always allow `$', but warn if pedantic. + (main): If -t, set `traditional'. + (collect_expansion): If `traditional', no special handling for quotes + and no whitespace added at end of macro definition. + + * expr.c (compare, compare1): Last arg to compare_constants + must be a size in bits. + +Thu Mar 31 00:31:52 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expmed.c (expand_mult, expand_divmod, extract_fixed_bit_field): + Reject function return register as target if may need to read it. + (Reading the return register in an inline function doesn't work.) + + * decl.c (start_function): Delete extra arg to `error'. + + * emit-rtl.c (last_parm_insn): Delete this unused var. + + * make-cc1.com: New version from Kashtan. + + * integrate.c (expand_inline_function): Always set up an INLINE_TARGET + for a function that returns a nonvoid nonBLK value. + Since `pushlevel' and `poplevel' are called, must also call + `expand_{start,end}_bindings' to make a pair of NOTEs. + Let them handle USEs at end of scope of formal parameter copies. + + * integrate.c (expand_inline_function): In a new-style CALL_INSN, + don't change the result reg into INLINE_TARGET. Also, + generate a move insn after the call only if INLINE_TARGET is non-0. + + * integrate.c (copy_decl_tree): Don't crash if DECL_RTL is 0. + + * integrate.c (copy_for_inline): Don't treat `return' rtx's specially. + + * stmt.c (expand_{start,end,emit}_delayed_expr): + New fns to handle ({...})'s in expressions output not where parsed + (such as third expression in a `for' statement). + * parse.y: Call them to handle third expression in a `for'. + + * decl.c (duplicate_decls): Result is `inline' if either OLD or NEW is. + + * emit-rtl.c (emit_note): Return the note, or 0 if none. + * stmt.c (expand_start_bindings): Use emit_note's value. + +Wed Mar 30 12:48:22 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * obstack.c (_obstack_begin): If ALIGNMENT is 0, use default. + Compute default for the alignment of a `double'. + * obstack.h (obstack_{begin,init}): Pass 0 for the alignment. + + * flow.c (mark_used_regs): Discard multiple SUBREGs, STRICT_LOW_PARTs. + + ** Call insns that return values are now represented as + (set (reg ...) (call ...)), not just (call ...). + + * *.md: Define a "call_value" insn pattern. + + * tm-m68k.h, tm-vax.h, tm-ns32k.h: (NOTICE_UPDATE_CC): + These insns invalidate the CC. + + * local-alloc.c (combine_regs): #if 0 special treatment of + function value hard reg. + (wipe_dead_reg): If hard reg, call reg_is_born so that the death + will not be ignored. + (reg_is_set): For reg that dies in this insn, mark it dead from now on + and post_mark it live after this insn only. + + * combine.c (try_combine): Don't allow a call insn as I1 or I2. + + * loop.c (count_loop_regs_set): Move CALL_INSN into a separate + clause. When finding regs that are function addresses, handle + both old and new format call insns. + + * flow.c (insn_dead_p): A SET that contains a CALL can't be dead. + (volatile_refs_p): Any CALL constitutes a volatile ref. + (mark_used_regs): If setting a reg from a volatile ref, + treat it like setting a reg whose value will be used. + + * expr.c (gen_call_1): New arg VALREG if nonzero means generate + a call_value insn which stores in VALREG. + (expand_call): Use `hard_function_value' to make the VALREG arg + unless expression has type `void'. + + * expr.c (emit_library_call): New 2nd arg OUTMODE is mode of result. + (So can give gen_call_1 the proper value-register.) + All callers (here and optabs.c) pass this arg. + + * cse.c (canon_hash): Consider all CALL rtx's volatile. + + ** end of change in representation of call insns. + + * stmt.c (expand_asm_operands): Replace complex lvalues with + SAVE_EXPRs here + * typecheck.c (c_expand_asm_operands): rather than here. + + * typecheck.c (pointer_diff): Fix typo preventing use of FLOOR_DIV_EXPR + when dividing by power of 2. + (build_c_cast): Flush unused locals. + (store_init_value): likewise. + (process_init_constructor): Delete unused 4th arg `for_static'. + + * toplev.c (fatal_io_error): Arg to fprintf was missing. + + * tm-m68k.h (LEGITIMIZE_ADDRESS): Flush extra arg to `emit_move_insn'. + + * decl.c: Delete some unused local vars. + + * stor-layout.c (layout_decl): `packed_size' now unsigned. + +Tue Mar 29 14:47:07 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * Version 1.19 released. + + * loop.c (may_trap_p): Nonzero if X is a division that might trap. + (scan_loop): If insn might trap, move only if loop always executes it. + + * dbxout.c (dbxout_type): Never output a cross-ref for + a type whose definition is known. Sun dbx won't accept them. + +Mon Mar 28 12:34:46 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * tm-vms.h (TARGET_DEFAULT): Default is PCC alignment. + The VMS compile driver controls the real default. + + * typecheck.c (c_expand_return): Don't ignore return value + when its type is void. + + * final.c (final): Forget the condition codes after an `asm'. + + * typecheck.c (build_binary_op_nodefault): Warn about ptr < 0 + even if not pedantic, but not if traditional. + + * typecheck.c (convert_for_assignment): Don't warn about + pointers volatile * vs nonvolatile * if -fvolatile specified. + + * decl.c (store_parm_decls): Among the old-style parm decls + there can legitiately be other decls! For example, if a parm + is declared `enum {foo, bar} x;', there are decls for `foo' and `bar'. + Don't let anything but a PARM_DECL match a parm name; + pass all the other decls through into the lexical context. + + * jump.c (jump_optimize): When deleting stack adjusts before a + jump-to-return, don't be fooled by intervening NOTEs. + + * tm-sequent.h (PRINT_OPERAND): Output (MEM (MEM (REG))) properly. + * output-ns32k.c (print_operand_address): Output (MEM (REG)) + properly; output stack-pointer as `tos'. + + * flow.c (find_use_as_address): Reject uses within operand 0 + of a ZERO_EXTRACT or SIGN_EXTRACT reference. It's hard to reload + an autoincrement inside these because they can refer to multiple bytes. + + * reload.c (find_reloads): `o' in constraint means any memref + (except auto-increment) is acceptable with reloading. + Braino: Clear BADOP, not BAD. + + * reload.c (push_reloads): Use rtx_equal_p (via macro MATCHES) + when considering reuse of an old reload. Otherwise equal values + may get reloaded into different registers, and two MEMs that + originally matched may fail to match once reloaded. + + * m68k.md (sign_extract and zero_extract insns): + If operand 0 is QI or HImode, don't allow register--only `o' + (except in some bftst patterns where bitpos is < 8). + And change `m' to `o' in all these patterns. + +Sun Mar 27 15:32:54 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (expand_expr, case CONSTRUCTOR): + Not all aggregates are BLKmode; use the type's mode. + + * gcc.c: Pass -y* to ld. + + * cse.c (struct hash): New member `equivalence_only'. + (insert): Initialize it. + (cse_insn): Set it to 1 when src_eqv is inserted. + When finding cheapest equivalent of something, + skip elts that are marked with `equivalence_only'. + + * decl.c (duplicate_decls): Don't call `layout_type' + if the type is `error_mark_node'. + + * decl.c (implicitly_declare): If decl will be file-scope, + make sure it's a permanent node, and its associated data too. + +Sat Mar 26 15:48:50 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * flow.c (insn_dead_p, mark_used_regs): Storing a reg via a + ZERO_EXTRACT or SIGN_EXTRACT is dead if the reg isn't needed afterward. + + * stmt.c (expand_start_function): Set current_function_name + to the name of this function. + * tm-vms.h (MAYBE_VMS_FUNCTION_PROLOGUE): Use current_function_name. + + * expr.c (expand_increment): A SUBREG in op0 can also a be a copy. + + * ns32k.md: Correct range of args for `adjspb' insn. + Use `adjspw' when appropriate. + New pattern for `lprd' insn. + Change some `const_int' predicates to GET_CODE tests. + + * expr.c (expand_call): Eval function before copying args to hard regs. + + * tree.c (make_node, copy_node): Don't get length of a REAL_CST + from tree_code_length. + + * expmed.c (extract_fixed_bit_field): In memory-word case, abort + if tm.h parms say word could fail to be well-aligned. + * tm-ns32k.h: Define STRUCTURE_SIZE_BOUNDARY so they will be aligned. + * tm-vax.h: Define STRUCTURE_SIZE_BOUNDARY since Unix CC seems to. + + * tm-vms.h (CPP_PREDEFINES): Predefine __GNU__ and __GNUC__. + +Fri Mar 25 13:23:27 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * gcc.c (main): Handle SIGHUP, SIGTERM. + + * expmed.c (expand_bit_and): Don't clobber OP1 when trying andcb. + +Thu Mar 24 21:59:09 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * stmt.c (assign_parms): Get size of BLKmode local from the type, + not the mode. + (expand_function_start): Init frame_offset before calling assign_parms. + +Wed Mar 23 23:50:37 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (emit_push_insn): When making a move insn, + go via emit_move_insn; else fails to put constants into memory. + +Tue Mar 22 15:45:10 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (expand_increment): Flush special case for register_operand; + actually call the predicate whatever it is. + + * genemit.c (gen_expand): Make `operands' a local variable, + not a global static one, in the `gen_...' function. + Avoids lossage when one `gen_...' fcn calls another indirectly. + + * genoutput.c (output_epilogue): Don't give printf a null string. + +Mon Mar 21 15:41:42 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expmed.c (store_bit_field) [HAVE_insv]: + Force VALUE1, not VALUE, into a register. + + * expmed.c (store_fixed_bit_field): Width of mask for clearing + the bit-field depends on mode of OP0. + + * ns32k.md (branch and store-flag insns): + Test cc_prev_status, not cc_status. + + * expmed.c (extract_bit_field): Delete unused var `omode'. + + * dbxout.c (dbxout_type, dbxout_tag): Use the main variant + of the specified type. + + * reload.c (find_reloads): When an alternative succeeds without reload, + initialize goal_alternative_matches from this_alternative_matches. + +Sun Mar 20 17:58:00 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * tm-sun*.h: Don't predefine `m68k'; Sun's compiler does not. + +Fri Mar 18 13:48:29 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * reload.c (find_reloads): Set up goal_alternative_matches + *after* the label `finish'. + + * stmt.c (assign_parms): GET_MODE_SIZE needs a mode, not an rtx. + + * recog.c (constrain_operands): Set global var `which_alternative' + to indicate which of the alternatives this insn matches. + + * typecheck.c (commontype): long int vs unsigned int + gives long unsigned, if long and int are the same width. + +Thu Mar 17 15:39:45 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * emit-rtl.c, tree.c: include local version of varargs.h. + + * decl.c (start_function): Clear TREE_EXTERNAL and set TREE_STATIC + here rather than in finish_function. Affects the case of + `extern foo (); static foo (a) {...}' + + * gcc.c: Handle -fnostdinc and -fnostdlib switches in specs. + + * cccp.c (main): Handle -fnostdinc: don't put default dirs + on the chain to be searched. + + * cccp.c (error, warning, error_with_line): No longer print + charpos within file; lineno is enough. + +Wed Mar 16 16:56:36 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expmed.c (expand_inc, expand_dec): Handy new subroutines + to generate x+=y or x-=y, given x and y as rtl. + * expmed.c (expand_divmod): Use them instead of gen_{add2,sub2}_insn. + + * expr.c (emit_move_insn): Return the move insn emitted. + Eliminate the code here to move a DImode or DFmode by pieces. + + * emit-rtl.c (emit_insn): Return-value was wrong if emit_to_sequence; + cannot use `last_insn' in that case. + + * regclass.c, stupid.c, local-alloc.c, global-alloc.c: + Some vars of type HARD_REG_SET should be `register' only + if HARD_REG_SET is a macro (ie a scalar). + + * expr.c (move_block_from_reg): New function, converse of + move_block_from_reg. + * stmt.c (assign_parms): If a BLKmode arrives in regs, + copy to a stack slot using move_block_from_reg. + +Tue Mar 15 17:33:22 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * regclass.c (regclass): Don't convert to two-operand insns + unless optimizing. + + * varasm.c (decode_rtx_const, const_hash_rtx): Fix typos. + + * stmt.c (fixup_var_1): Don't alter insn moving VAR to or from + a subreg of a register. + + * cse.c (fold_rtx): Don't fold if result is not LEGITIMATE_CONSTANT_P. + Construct all results in new local variable NEW; then test that + and decide whether to return it or the original rtx. + + * cse.c (cse_insn): When SRC_EQV is non-0 but set[0] has been + cleared, don't insert SRC_EQV in hash table. + + * All insns emitted by a define_expand become part of the SEQUENCE: + * SEQUENCE now contains a vector of insns, not of bodies. + * insn-emit.c (add_insn): If `emit_to_sequence' nonzero, add the + insn to a separate chain, `sequence_first_insn'. + (gen_sequence): Take everything on that chain and make a SEQUENCE. + (emit_insn): Handle SEQUENCE differently since elts are now insns. + (emit_insn_{before,after}): Handle SEQUENCE. + (classify_insn): #if 0. + * genemit.c (gen_expand): emit all the insns, then call gen_sequence + to make the return value. + Define two macros DONE and FAIL for use in a DEFINE_EXPAND: + Use DONE to inhibit emission of the pattern of the DEFINE_EXPAND. + Use FAIL to make the gen_... function return 0. + +Mon Mar 14 12:47:28 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (expand_expr): Extend the don't-sign-extend-enums hack + to COMPONENT_REF. (See 3 March.) + + * tm-*.h (FUNCTION_ARG, etc.) New argument NAMED + is nonzero for a named arg, zero for an anonymous extra arg. + * expr.c (expand_call): Pass 1 for NAMED if appropriate. + * expr.c (emit_library_call): Pass 1 for NAMED. + * stmt.c (assign_parms): Pass 1 for NAMED. + + * cccp.c: Test __GNUC__, not __GNU__. + + * integrate.c (copy_and_substitute_rtx): + Replacing a MEM parm with the parm value, convert mode if mismatch. + Always use VOIDmode when generating SETs. + Take heed of FIRST_PARM_OFFSET and distinguish arg-pointer + from frame-pointer when they are different. + (expand_inline_function): Handle (RETURN) insns, by creating a + return_label which is output after the integrated code. + + * parse.y (yylex): Condition for ignoring `inline' was backwards. + + * flow.c (mark_used_regs): Ignore STRICT_LOW_PART, so that + an insn that sets STRICT_LOW_PART (and its source values) may be dead. + (propagate_block): Always pass 1 for strict_low_ok to insn_dead_p. + + * optabs.c (emit_unop_insn): Don't make a REG_RETVAL note. + Change above deletes dead STRICT_LOW_PART stores without one. + + * optabs.c (expand_binop, expand_unop): If the library address + is to be put in a pseudoreg, do it here, and make the REG_RETVAL + note point after that. + + * expr.c (emit_library_call): Never defer stack-pops. + Deletion of the library call by flow.c loses if they are deferred. + + * cse.c (cse_insn): Handling of 68k's zero-extend was broken: + it made the actual source and the REG_EQUAL source equivalent. + * If dest is a STRICT_LOW_PART, ignore the actual source and use + the REG_EQUAL source in its place. src_eqv's mode may be different + from src's, so use proper mode in lookups or inserts for src_eqv. + * Don't forget to set src_eqv_elt if src_eqv already has an elt. + * On use_related_value for src_eqv, use src_eqv_elt. + + * toplev.c (main_input_filename): Name of file mentioned in first + #-line in the input. + (compile_file): Pass it to dbxout_init as 2nd arg. + * dbxout.c (dbxout_init): Use 2nd arg to make the N_SO symbol. + * parse.y (check_newline): Store main_input_filename. + + * expr.c (move_block_to_reg): New function, copies a MEM:BLK + to consecutive registers. + (use_regs): New function to emit a USE for each reg in a series. + (expand_call): Use the two new functions when a precomputed BLKmode + arg is passed entirely in regs. + (emit_push_insn): Use move_block_to_reg when PARTIAL > 0. + Also, don't subtract USED from SIZE twice. + Use plus_constant to add ARGS_SO_FAR so can use indexing on stack ptr. + + * varasm.c (assemble_integer_zero): Use rtx 0, not tree 0, + to go with prev change in ASM_OUTPUT_INT. + +Sun Mar 13 01:16:17 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * varasm.c (const_hash, compare_constant_1, record_constant_1): + Handle NOP_EXPR and CONVERT_EXPR in constant expressions. + + * optabs.c (expand_binop, expand_unop): When widening operands, + those with VOIDmode (like CONST_INT) may be left alone. + +Sat Mar 12 01:09:24 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * varasm.c (assemble_variable): When making a .comm or .lcomm, + round size up to multiple of BIGGEST_ALIGNMENT. + + * obstack.c (_obstack_newchunk): Eliminate fencepost causing copying + to access the word past the end of the existing object. + + * tm-vax.h, tm-ns32k.h: Define {INIT_,}CUMULATIVE_ARGS + and upgrade FUNCTION_ARGS for new calling convention. + + * gcc.c: If -O, define __OPTIMIZE__. + (do_spec_1): %c now scans SIGNED_CHAR_SPEC: define __CHAR_UNSIGNED__ + when appropriate whether or not it is the default. + +Fri Mar 11 16:49:25 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * parse.y: Define YYDEBUG. + + * rtl.c (rtx_unstable_p): New function, same as old rtx_varies_p. + * explow.c (stabilize): Use rtx_unstable_p. + * rtl.c (rtx_varies_p): Ignore `unchanging' (undoing previous change + in this function) because `unchanging' doesn't enable cse to compare + the value with any particular constant value. + * rtl.c (insn_store_addr_varies_p): Delete, since not used. + + * hard-reg-set.h (COPY_HARD_REG_SET, etc.) non-scalar case: + Rename and rearrange temp variables to avoid name conflicts with args. + + * regclass.c (reg_class_record): Don't smash class to GENERAL_REGS + and don't exit prematurely, when `r' or `g' is seen. Must merge + GENERAL_REGS with previously determined desired class. + + * expr.c (expand_call) [no PUSH_ROUNDING]: When pushing the arg + block, try to reuse some of the pending_stack_adjust. + + * cse.c: qty_const can now hold values (PLUS frame_pointer integer). + Effect is that storing into a structure doesn't invalidate + mem refs to scalar stack variables via addresses in registers. + (insert): Load such values into qty_const, like true constants. + (fold_rtx): Ignore qty_const if it isn't really a constant. + + * expr.c (expand_expr) VAR_DECL: Copy DECL_RTL before calling + change_address, so it isn't permanently clobbered. + + * stmt.c (fixup_var_refs_1): Make sure the stack slot address + is valid by calling fixup_stack_1 each time it is substituted. + + * stmt.c (fixup_stack_1): Return the altered rtx. + If it's a MEM in the stack, return a copy of it. + + * stmt.c (fixup_stack_slots): #if 0. + * stmt.c (expand_finish_function): Don't call fixup_stack_slots + because fixup_stack_1 is called elsewhere when necessary. + + * reload.c (find_reloads_address): New arg is location of the MEM + whose address is being reloaded. So we copy the MEM if it + is one that can be shared. New arg 0 means no need to copy the MEM. + All callers pass the new arg. + + * stmt.c (assign_parms): Determine parm stack-size from + the DECL_ARG_TYPE, not from the TREE_TYPE. + Else loses when parm is declared `float' but passed as `double'. + + * emit-rtl.c (make_safe_from): Constants are already safe. + Use proper machine mode for temp reg when needed. + +Thu Mar 10 14:35:14 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (emit_push_insn): Don't pass wrong type to plus_constant + (case where there is no PUSH_ROUNDING). + + * expr.c (expand_call): Round partial[i] down to multiple of + PARM_BOUNDARY before subtracting it from arg size on stack. + Compute these sizes just once and keep them in vector `arg_size'. + * expr.c (emit_push_insn): Handle `partial' uniformly, in accord + with this new convention for how it affects the stack size. + * stmt.c (assign_parms): Round NREGS down to PARM_BOUNDARY likewise. + + * obstack.h (obstack_free macro) [Not __GNUC__ but __STDC__]: + Don't cast result of (obstack_free) to (int); just ignore it. + + * reload.c (find_reloads): Initialize operand_reloadnum. + + * optabs.c (emit_unop_insn): New argument CODE, used to make + a REG_EQUAL note from operand OP0 if more than one insn results. + Also a REG_RETVAL note. + * expr.c (convert_move): Pass CODE arg to emit_unop_insn. + * flow.c (propagate_block): Use insn_dead_p to decide whether + to handle a REG_RETVAL note by skipping some insns. + Always pass 1 for STRICT_LOW_OK for an insn that has a REG_RETVAL note. + Handle case where REG_RETVAL points at an insn that's deleted. + * flow.c (insn_dead_p): New operand STRICT_LOW_OK says an insn + that sets STRICT_LOW_PART may be considered dead. + + * expr.c (expand_expr): Once again canonicalize X-C to X+(-C). + Change on March 1 made it stop doing this. + +Wed Mar 9 01:25:35 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * loop.c (move_movables): Don't always mark the moved reg + as equivalent to a constant value: not if it is being cleared + to zero-extend something or if it is used outside the loop. + + * expr.c (move_by_pieces_1): Finish last change. + + * stmt.c (assign_parms): Update stack_args_size properly. + Figure FIRST_PARM_OFFSET when making the stack mem refs. + + * cse.c (insert): Build the related_value lists in the opposite order + so that the oldest element in the chain is the one that follows + the most basic element. + + * expr.c (expand_expr): COMPONENT_REF case: criterion for + converting the the result is if MODE1 (its mode of arrival) isn't + a mode we want. + + * toplev.c (rest_of_compilation): Fix typo setting TREE_ASM_WRITTEN. + +Tue Mar 8 13:18:37 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * cse'ing of library calls. + + * expr.h: type `optab' is now a ptr to a struct. + The old contents are now the `handlers' element. + The `code' element gives the RTL code for the kind of expression + this optab makes (PLUS for add_optab, etc.) + Every var formerly declared `struct optab *' is now just `optab'. + + * optabs.c (init_optab, init_optabs): New function to init an optab + and set its `code'. Used in init_optabs. + + * optabs.c (expand_binop, expand_unop): Use the `code' field + to add a REG_EQUAL note to the insn that copies a libcall's + value into a pseudo. Also a REG_RETVAL note pointing at the + first insn for setting up args for the call. + + * cse.c (cse_insn): Process REG_EQUIV and REG_EQUAL datum almost like + another set-src; put the actual src into the equivalence class of that. + + * flow.c (propagate_block): If a dead insn has a REG_RETVAL reg-note, + either ignore or delete all the insns back to the insn the REG_ARG + note points to. + + * local-alloc.c (block_alloc): Don't refrain from allocating a + "constant" register if the constant value isn't ok for an immediate op. + + + * dbxout.c (CONTIN): If DBX_CONTIN_LENGTH is <= 0, do nothing. + + * cccp.c: Extra default include dirs for C++. + * cccp.c (main): For -M, strip dirs from object file name. + + * rtl.c (find_reg_note): New function. + + * expmed.c (store_fixed_bit_field): Don't AND with VALUE + if VALUE's original mode had no more bits than we want. + + * expr.c (emit_library_call): Use varargs. + + * integrate.c (copy_and_substitute_rtx): Recognize arg_pointer_rtx + and translate it just like frame_pointer_rtx. + +Mon Mar 7 00:48:33 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expmed.c (extract_fixed_bit_field): + Shift counts were wrong for narrow MODE in signed case. + Do the sign-extending shifts in the narrowest mode possible. + Reduce big-endian case to little-endian case. + Delete SLOW_ZERO_EXTEND conditional. + + * Implement constants in memory for RISC machines + with limited abilities for immediate args and constant addresses. + + * genoutput.c (output_epilogue): Empty predicate-name + is output as 0 in insn_operand_predicate. + + * expr.c (expand_expr): Change 4th arg to an `enum expand_modifier' + Value EXPAND_SUM corresponds to old nonzero 4th arg. + Value EXPAND_CONST_ADDRESS means ok to return an invalid MEM + whose address is a constant. Changes for this case in ADDR_EXPR, + COMPONENT_REF and ..._DECL. + + * varasm.c (output_arith_constant): Function deleted. + * tm-*.h: (ASM_OUTPUT_{INT,SHORT,CHAR}): 2nd arg is now an RTX + and output it using `output_addr_const'. + * varasm.c (output_constant): Change uses of those macros. + + * varasm.c (init_const_rtx_hash_table): Initialize constant pool + for a new function. Called from `expand_function_start'. + * varasm.c (force_const_mem): Turn a constant rtx into a MEM rtx + which refers to the constant pool. Other new subroutines too. + (force_const_double_mem): Use force_const_mem to make the MEM. + (immed_real_const): No longer record the REAL_CST node in the rtx. + + * explow.c (force_reg): If arg is a constant and not legitimate, + put it in the constant pool with force_const_mem. + Mark the register as equivalent to the constant value. + * expr.c (emit_move_insn): Likewise. + * explow.c (break_out_mem_refs): Use force_reg to put into a reg. + * explow.c (memory_address): Likewise. + * expr.c (expand_expr): ADDR_EXPR case: likewise. + + * expr.c (expand_call): Do force_reg on each register-operand + so it will go through a pseudo and can be cse'd. + + * recog.c (immediate_operand, nonmemory_operand, general_operand): + For constant operands, use LEGITIMATE_CONSTANT_P to decide value. + * tm-*.h: Define LEGITIMATE_CONSTANT_P. + + * reload1.c (reload): Invalid constants can't go in reg_equiv_constant. + +Sun Mar 6 22:49:06 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * reload.c (push_reloads): If IN occurs within OUT, + don't reuse an existing input-only reload. Otherwise would lose on + (set (mem (plus R C)) (plus R C1)) if R is available in a spill reg. + + * reload1.c (choose_reload_targets): Don't choose an inherited + reload register that's in use for another reload. + Without this, above change doesn't have an effect. + + * Implement the `unchanging' flag in MEM and REG rtx's. + Also simplify code with a new subroutine `change_address'. + + * emit-rtl.c (change_address): Return new memory ref like an old + one but with specified mode and address. + * expmed.c (extract{,_split,_fixed}_bit_field): Use change_address. + (store{,_split,_fixed}_bit_field): Likewise. + * expr.c (store_expr, expand_expr): Likewise. + + * expr.c (move_by_pieces): Args now memrefs, not addresses. + Eliminate the FROM_VOL and TO_VOL args since the memrefs indicate. + Change the structure `struct move_by_pieces' similarly. + (move_by_pieces_1): Same changes; use change_address. + (emit_block_move, emit_push_insn): Calls to move_by_pieces changed. + + * integrate.c (copy_rtx_and_substitute): Use change_address; + handle ->unchanging field. + + * rtl.c (rtx_varies_p): Regs or memrefs with ->unchanging don't vary. + (copy_rtx): Perserve ->unchanging. + (print_rtx): Print ->unchanging as /u. + + * stmt.c (expand_decl): Set ->unchanging on `const' decls. + (fixup_memory_subreg): Use change_address. + (assign_parms): Record in the rtl which parms are volatile or const. + + * varasm.c (assemble_variable): Set ->unchanging on `const' decls. + (output_constant_def): Always set ->unchanging for constant refs. + + * cse.c (canon_hash): Don't treat a MEM as "in memory" + if its ->unchanging bit is set. + + * loop.c (invariant_p): A REG or MEM with ->unchanging is invariant + (for a MEM, the address must be invariant). + +Sat Mar 5 13:22:11 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * genconfig.c (walk_insn_part): DO consider MATCH_DUPs + when calculating MAX_RECOG_OPERANDS. + (gen_expand): define_expand is now different from define_insn. + Compute max # SETs or CLOBBERs for any one sub-insn in a define_expand, + instead of summing them all. And don't count the MATCH_DUPs at all. + + * genemit.c (max_operand_1): Record largest opno in a MATCH_DUP + separately from largest in a MATCH_OPERAND. + (gen_expand): An operand # with only MATCH_DUPs gets + a local variable in the gen_ function we output. + + * integrate.c (save_for_inline): Delete vestige of NOTE_INSN_IS_DECL. + + * cse.c (invalidate): Handle subregs. + (cse_ins, invalidate_from_clobbers): Do call `invalidate' for subregs. + (insert_regs): When assigning one subreg from a like one, + make the two regs equivalent. + (cse_insn): Do call insert_regs when dest is a subreg. + + * expr.c (expand_call): Precompute all args going via hard regs + since even arithmetic could require a library call. + +Fri Mar 4 15:48:17 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * stor-layout.c (layout_parms): Function deleted. + * stmt.c (expand_function_start): Don't call it. + + * stmt.c (assign_parms): + stack_args_size counts size of args so far passed on stack. + Use PARM_BOUNDARY when counting it; derive stack offsets from it. + Set current_function_args_size from it. + + When an arg is split between regs and stack, make stack space + for the rest of it, and count it. + In a varargs function, push the last arg onto the stack. + When an arg is passed in regs alone, don't remember a stack slot + for it, and if it needs one, use assign_stack_local. + + Set DECL_OFFSET to the stack offset, or -1 if parm came in regs. + + * expr.c (expand_call): Anonymous args of a varargs function + are always passed on the stack. + + * varasm.c (force_const_double_mem): Copy the MEM rtx + if it may need to be smashed by reloading. + + * genemit.c (gen_expand): define_expand must have nonempty pattern + even though, due to `return' statements in the code-to-run, + that pattern may not be used to generate code. + +Thu Mar 3 17:08:43 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (expand_expr): If supposed to sign-extend an enum + which is never negative, zero-extend instead (unless SLOW_ZERO_EXTEND). + (store_expr): Likewise. + + * reload.c (find_reloads): 'm' for CONST_DOUBLE: clear BADOP, not BAD. + After force_const_double_mem, do find_reloads_toplev on the MEM. + (find_reloads_address): Handle constant addresses (on machines + that don't allow them). + + * final.c (set_current_gdbfile): New fn, get the gdbfile structure + for specified filename. + (output_source_line): Use set_current_gdbfile for the file. + * varasm.c (assemble_variable): Call set_current_gdbfile + for the declaration's source file, so GDB won't ignore the file. + + * varasm.c (force_const_double_mem): Build a new REAL_CST node + and get its data type from the machine mode of the CONST_DOUBLE. + (immed_real_const): Don't save the REAL_CST tree node. + * typecheck.c (get_floating_type): Return float type for given mode. + + * integrate.c (expand_inline_function): Ignore the (USE (REG...)) + (for the return-register) at the end of the inline function. + After a CALL_INSN, imagine the (SET (REG ...) (REG ...)) for + the return-register if the return-register isn't explicitly used. + +Wed Mar 2 22:08:49 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * typecheck.c (build_array_ref): Do default_conversion on INDEX. + +Tue Mar 1 15:49:34 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (expand_call): Always get a SYMBOL_REF for a fixed function. + If may be alloca, set may_call_alloca. + (gen_call_1): Never put a SYMBOL_REF through `memory_address'; + but if function cse is wanted, just copy it to a register. + If NO_FUNCTION_CSE is defined, never do function cse. + + * expr.c (init_expr): New function, does init_queue and inits + other things. + + * stmt.c (expand_function_start): Call init_expr, not init_queue. + + * optabs.c (expand_binop): Don't clobber OP0 and OP1 + if may call delete_insns_since later. + + * expr.c (emit_library_call): PUSH_ARGS_REVERSE test was backwards. + + * cse.c (cse_insn): Do canon_reg on the size and position operands + in a ZERO_EXTEND or SIGN_EXTEND that is a destination. + + * tm-*.h: Define SLOW_BYTE_ACCESS. + * expmed.c ({store,extract}_fixed_bit_field): + If SLOW_BYTE_ACCESS, get/set all bit fields from full words. + + * combine.c (subst): Simplify + (zero_extend:SI (subreg:QI (zero_extract ...))). + * combine.c (simplify_and_const_int): Simplify + (and (zero_extract ...) (const_int ...)). + + * local-alloc.c (qty_compare{,_1}): Test of qty_phys_sugg was reversed. + (combine_regs): If one pseudo gets two suggested hard regs + (one at birth and one at death), prefer the one from birth + unless we see at death that it's no good. + + * expr.c (expand_expr): Ignore sum_ok unless mode is Pmode. + Don't use force_operand unless sum_ok is set. + +Mon Feb 29 19:23:50 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (emit_move_insn): When a CONST_DOUBLE needs moving + by pieces, force it into memory, unless it is dconst0_rtx, + in which case each piece is const0_rtx. + (emit_push_insn): Likewise. Also, write code for pushing a + non-BLK mode which has no "mov" insn defined, but only + in the case where there is no PUSH_ROUNDING. + + * expr.c (do_tablejump): Put constant term in address last. + + * toplev.c (xrealloc): On error, call fatal instead of abort. + + * optabs.c (emit_cmp_insn): If genning from tst_optab, + make the operand fit its predicate. + + * optabs.c (expand_float): Don't adjust stack between cmp and jump. + + * optabs.c (expand_binop): Recursive calls can return 0; handle + that event by deleting any preparatory insns. Also don't smash + TARGET when this happens. + + * reload.c (push_reload): If IN != *INLOC, set reload_nocombine. + (combine_reloads): Don't combine an input reload with reload_nocombine. + + * jump.c (jump_optimize): Don't delete stack adjusts unless + EXIT_IGNORE_STACK is nonzero. + * expr.c (clear_pending_stack_adjust): Likewise. + * tm-*.h: When EXIT_IGNORE_STACK is defined, give it `1' as defn. + + * expr.c (expand_call): Initialize args_size. + Don't push a block if args_size is 0. + (emit_library_call): Don't include register-args (or reg-parts + of partial ones) in args_size. + Don't push a block if args_size is 0. + + * expr.c (expand_expr): For DECLs in memory, check the address + validity with memory_address_p, and preserve volatility info. + + * stmt.c (expand_function_end): fixup_gotos needs 2 args. + + * jump.c (mark_jump_label): If INSN is 0, don't set its JUMP_LABEL. + Inside an ADDR_VEC or ADDR_DIFF_VEC, recurse with 0 for INSN. + + * varasm.c (force_const_double_mem): Must zero TREE_CST_RTL + before output, or nothing will happen. + +Sun Feb 28 01:08:53 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * optabs.c (emit_unop_insn): Generate and emit an insn + given the insn-code and the two operands (one out, one in). + Can move the operands into registers when needed for various + reasons. + * expr.c (convert_move): Use emit_unop_insn for outputting the + conversion insns. + + * expr.c (emit_library_call): Use arg's nominal mode to choose + a reg to pass it in, not actual mode (which can be VOIDmode). + + * insn-emit.c (emit_insn): If arg is empty SEQUENCE, do nothing. + + * genemit.c (gen_expand): Scan the rtl-pattern for predicates + and machine modes of the operands. + + * m68k.d (dbra patterns): Add HPUX_ASM conditionals. + + * rtl.c (reg_mentioned_p): Use "equal", not "eq", when + REG isn't a register. + * reload.c (combine_reloads): Verify not reg_mentioned_p even if + the input reload's value isn't a register. + + * reload.c (operands_match_p): If successful and 2nd arg + has a pre-increment that matches a non-increment, return 2. + + * reload1.c (reload): At end, clobber a pseudoreg to a MEM + even if it's an out-of-range address. It doesn't affect the + assembler code in this case, but it makes the dbx output correct. + + * recog.c (constrain_operands): When operands_match_p returns 2, + in the constraint alternative that is ultimately successful, + copy the output operand from the input that it matched + so that the assembler insn that is output shows the pre-increment. + +Sat Feb 27 15:16:47 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * combine.c (subst): When optimizing + (set (zero_extract ...) (and (zero_extract ...) const)) + must arrange to have 1's, not 0's, shifted into low bits of const. + + * decl.c (grokdeclarator): When return-type defaults to int, + don't warn, just set warn_about_return_type. + (start_function): See that variable and warn, after starting function. + + * toplev.c (count_error): No longer print newline if not quiet. + (report_error_function): If not quiet, print a newline if + printing anything, and don't print the function name. + + * reload1.c (choose_reload_targets): + Fix the loop that checks for consecutive available spill regs. + Set `have_groups' nonzero if any reload wants a group. + In that case, for non-group reloads, prefer a reg that can't be in + group, or else one that has only one available neighbor. + + * reload1.c (reload): Find separately the max need for each class + for single registers, groups of registers, and single registers + not in any group. (The last one counts non-group reloads + in insns that have at least one group reload.) + Then make sure enough of each kind are found. + + * expmed.c: Now needs flags.h and recog.h (therefore insn-config.h). + + * expmed.c (store_bit_field): + Delete redundant protect_from_queue. + Force VALUE out of memory if -fforce-mem. + If insv's predicate for VALUE wants a register, put it there. + + * expmed.c (extract_bit_field): + Force TARGET out of memory if -fforce-mem. + If insv's predicate for TARGET wants a register, put it there. + +Fri Feb 26 00:12:48 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * reload1.c (eliminate_frame_pointer): Don't check for pushes + unless PUSH_ROUNDING is defined. + + * reload.c: Don't define REG_OK_FOR_{INDEX,BASE}_P + (since the tm file is supposed to do it). + + * expr.c (emit_push_insn, expand_call): + Don't use PUSH_ROUNDING if it's not defined. + + * expr.c (preexpand_calls): Do nothing for constants and decls. + + * expr.c (expand_call, emit_library_call): When PUSH_ROUNDING + is not defined, use ROUND_CALL_BLOCK_SIZE to round the size + of the block of arguments. + + * expr.c (expand_call): Don't count register-args in ARGS_SIZE. + + * rtl.h, emit-rtl.c: Create static_chain_incoming_rtx + and struct_value_incoming_rtx. + * stmt.c (expand_function_start): Use ..._incoming_rtx where needed. + + * expr.c (expand_call): Use new macros INIT_CUMULATIVE_ARGS, + CUMULATIVE_ARGS and FUNCTION_ARG_ADVANCE to update data + on args scanned so far. + (emit_library_call): Likewise. + * stmt.c (assign_parms): Likewise. + * tm-spur.h, tm-m68k.h: Define these macros. + + * rtl.h (NUM_MACHINE_MODES): NUM_MACHINE_MODE renamed. + * rtl.c, genrecog.c: Change places it is used. + + * cccp.c (output_line_command): line_cmd_buf should be chars, not ints. + +Thu Feb 25 13:33:29 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * genemit.c (gen_expand): Don't lose if pattern is empty-vector. + + * genconfig.c (gen_insn): Don't lose if pattern is empty-vector. + + * expr.c (expand_expr): For COMPONENT_REF, don't convert to tmode + unless the mode we get is unacceptable. + + * loop.c (scan_loop, move_movables): New field `partial' is 1 for + zero-extending clr insn; don't make the reg invariant when it's moved. + + * optabs.c (expand_unop, expand_binop, emit_cmp_insn): + mode-argument to predicates was missing. + + * optabs.c (expand_binop): If gen-function returns 0, this means + the insn wasn't available. + + * reload.c (find_reloads): Don't make optional reloads for operands + that match other operands. + + * reload.c (combine_reloads): Reject optional output reload. + + * reload.c (find_equiv_reg): Know that CALL_INSNs clobber memory. + + * typecheck.c (build_binary_op_nodefault): + If doing a short shift, leave the shift-count as a fullword. + +Tue Feb 23 14:43:46 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * combine.c (subst): Count, in n_occurrences, # times FROM is seen. + (try_combine): Refuse to combine x=*y++ into z = x*x. + + * loop.c (invariant_p): Frame pointer and arg pointer are invariant. + (move_movables): Don't forget to set ->done! + When moving the matching movables, don't forget to set n_times_set. + + * expmed.c (expand_shift): Reorder strategies for logical shift; + if widening, try all ashift strategies before extzv. + + * typecheck.c (build_binary_op_nodefault): + Always return error_mark if either operand is one. + + * recog.c (nonmemory_operand): New predicate. + + * optabs.c (expand_unop, expand_binop, emit_cmp_insn): + Don't treat `register_operand' as special. Apply the predicate + to the rtx; if the predicate fails, use a register instead. + +Mon Feb 22 22:37:32 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * expr.c (expand_calls): Preexpand all calls in arguments + that are passed in regs before copying any of them into the regs. + + * expr.c (emit_push_insn): Three more args. + EXTRA for extra space to leave. + ARGS_ADDR and ARGS_SO_FAR for using move-insns on machines + that lack true push insns. + + * expr.c (emit_library_call, expand_call): + Use the new arguments of `emit_push_insn'. + + * expr.c (PUSH_ARGS_REVERSED): defined if handle args last-to-firs. + +Sun Feb 21 12:17:59 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * toplev.c (rest_of_compilation): Set TREE_ASM_WRITTEN + when a function is really output as assembler code. + Don't do inlining of a function that is already made inline; + instead, output it as assembler code, because this must be + the second call for that function. + + * decl.c (finish_compilation): Delete it. + * toplev.c (compile_file): Output pending inline functions at the end + in the same way tentative-defined variables are output. + + * emit-rtl.c (restore_reg_data): New fn: given chain of insns, + restore emit-rtl's data on registers from the regs they use. + + * integrate.c (output_inline_function): Use restore_reg_data. + (fill_regno_reg_rtx_as_needed): Now restore_reg_data_1 in emit-rtl.c. + + * tree.c (build_decl): Function moved from decl.c. + No longer set attributes of function decls specially. + + * decl.c (implicitly_declare, builtin_function, grokdeclarator): + Don't expect build_decl to set attributes of FUNCTION_DECL. + + * tree.c (preserve_data): New fn, make all data now on + maybepermanent_obstack last permanently. + + * cse.c (cse_insn): Remove a STRICT_LOW_PART from the dest rtx + before putting it in the hash table. + + * symout.c (symout_block): Fix the args to `symout_block_symbols'. + +Sat Feb 20 00:07:52 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + Start of changes for inline functions. + Changes received from Tiemann, then slightly rearranged for simplicity. + + * integrate.c: New file (Tiemann's rtl2.c). + * integrate.c (function_cannot_integrate_p): + New fn, only checks whether current fn is safe and good to inline. + Returns an error message string if not. + + * expr.c (current_args_size): Var made static. + (store_expr): Fn no longer static. + (stack_pointer_rtx): Use this var for all refs to the stack pointer. + (struct_value_rtx, static_chain_rtx): Likewise + + * expr.c (expand_call): Detect calls to integrable functions + and integrate them. + **If fn is not named "alloca" then assume it is not `alloca'. ** + + * emit-rtl.c (max_label_num): New fn, returns number for next label. + (get_first_label_num): New fn, returns first label of current fn. + (init_emit): Save first label number of this fn. + + * emit-rtl.c (gen_inline_header_rtx): New fn, make an INLINE_HEADER. + + * emit-rtl.c (emit_declaration): New fn to emit new kind of NOTE. + + * emit-rtl.c (init_emit_once): New fn. + Move inits of unique rtl objects here, from init_emit. + + * decl.c (finish_compilation): New fn to compile separately + any nonglobal inline functions that need to be addressable. + + * decl.c (grokdeclarator): Handle `inline' kwd among the declspecs. + Set TREE_INLINE if it's safe. + + * decl.c (finish_function): If fn was inlined, don't clear + the DECL_ARGUMENTS or DECL_RESULT or DECL_INITIAL. + + * gen*.c: Provide rtl_obstack, not current_obstack. + + * rtl.c (rtl_obstack): Variable: ptr to obstack to use for making rtl. + * rtl.c (rtx_alloc, rtvec_alloc): Use that obstack. + * rtl.c (copy_rtx): Copy the `integrated' flag. + * rtl.c (print_rtx): Print that flag as `/i'. + + * rtl.def: New rtx code INLINE_HEADER. + + * rtl.h (struct rtx_def): Add `integrated' field. + * rtl.h: Define macros for fields in an inline_header rtx. + + * stmt.c (max_parm_reg_num, get_first_function_insn): + New fns, return info on parm regs and the insns that init them. + + * stmt.c (expand_decl): Simplify with new local `type'. + + * stmt.c (stack_pointer_rtx): Replace all refs to stack pointer + with this shared rtx. + * stmt.c (struct_value_rtx): Likewise. + + * stmt.c (expand_start_function): Call init_pending_stack_adjust + instead of clear_pending_stack_adjust. + If not using a return-label, set `return_label' to 0. + + * stmt.c (expand_null_return, expand_end_function): + Call clear_pending_stack_adjust unconditionally. + + * expr.c (clear_pending_stack_adjust): Move the conditionals here. + For now, this fn is a no-op, since it's not safe in an inline fn + and the stack adjusts are deleted by jump.c in if optimizing. + + * expr.c (init_pending_stack_adjust): New fn. + +Fri Feb 19 14:30:13 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * toplev.c (main): Decode -finline-functions, -fkeep-inline-functions. + + * toplev.c (rest_of_compilation): + At start, save the rtl if function should be inline. + For inline function, if we don't yet know whether it should be + compiled on its own, don't do so. + + * toplev.c (compile_file): Clear, and later print, `integration_time'. + Call `init_emit_rtl' when starting. + Call `finish_compilation' at the end. + + [Add an extra arg to the error and warning functions?] + + * tree.c ({push,pop,clear}_momentary): + Change momentary_stack from a char ** to a struct momentary_level *. + + * tree.c (build_pointer_type): Put temporary type in `saveable_obstack' + * tree.c (build_type_variant): Likewise. + * tree.c (make_node): Likewise. Also put decls and LET_STMTs there. + * tree.c (type_hash_canon): Free a temporary type in `saveable_obstack' + + * tree.c (perm_tree_cons): Like `tree_cons' but on perm. obstack. + + * tree.c (init_tree, {{end_,}temporary,permanent}_allocation): + Handle `maybepermanent_obstack' and `saveable_obstack' and + `rtl_obstack'. + + * tree.h (TREE_INLINE): New attribute macro. + * tree.h (DECL_SAVED_INSNS, DECL_FRAME_SIZE): + New components in a FUNCTION_DECL. + Delete the `unused` slot in a `struct tree_decl'. + + * typecheck.c (mark_addressable): Set TREE_ADDRESSABLE + even in FUNCTION_DECLs. + + * typecheck.c (build_function_call): + If function is a FUNCTION_DECL, avoid setting TREE_ADDRESSABLE + when taking its address. + + * parse.h: Define RID_INLINE. + * parse.y: Define keyword `inline'; set up ridpointers for it. + (yylex): Don't recognize `inline' of -fno-asm or -ftraditional. + + * flags.h: New vars flag_inline_functions + and flag_keep_inline_functions. + + End of changes for inline functions. + + * tree.c (convert): If EXPR's type is an error_mark, return error_mark. + + * Makefile (install): Don't strip the executables. + + * jump.c (delete_insn): Deleting a label's target + can delete either NEXT and PREV! So must search for a + following nondeleted insn to return. + + * typecheck.c (build_function_call): Typo in validating + data type of function. + + * genoutput.c (gen_expand): Must create a `struct data' even + for a define_expand, so we can output the proper insn_gen_function + and leave zeros in the other tables. + + * loop.c (scan_loop): Replace the code for handling zero-extends + with unconditional code that checks for a pair of insns. + + * m68k.md: Do zero-extend using define_expand to generate + a pair of insns, to set all to zero and then copy the low part. + +Thu Feb 18 15:54:00 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * emit-rtl.c (emit_insn): If arg is a SEQUENCE, emit several insns. + * emit-rtl.c (classify_insn): Given an RTX, return the rtx-code for + an insn containing it: CODE_LABEL, INSN, JUMP_INSN or CALL_INSN. + + * rtl.def: New RTX types DEFINE_EXPAND and SEQUENCE. + * gen*.c: Handle DEFINE_EXPAND. Only genemit.c does real work. + + * make.com, make-cc1.com, make-cccp.com: New, VMS command files. + + * tm-vms.h: New file, used as tm.h to generate VMS code. + + * tm-vax.h (FUNCTION_PROLOGUE): Turn off no bits in the mask; + let call_used_registers alone control this. + Call MAYBE_VMS_FUNCTION_PROLOGUE, and define that as no-op. + + * tm-vax.h (TARGET_VAXC_ALIGNMENT): New target-flag bit. + BIGGEST_ALIGNMENT, EMPTY_FIELD_BOUNDARY and POINTER_BOUNDARY use it. + + * varasm.c (assemble_function): Use ASM_DECLARE_FUNCTION_NAME + if it is defined. + + * varasm.c (assemble_variable): On an external, + use ASM_OUTPUT_EXTERNAL if defined. Default is do nothing, as before. + + * toplev.c: + Use FATAL_EXIT_CODE and SUCCESS_EXIT_CODE. + Don't include time.h and resource.h on VMS. + (main) Define __VERSION__ if not already defined. + Conditionalize setrlimit on RLIMIT_STACK. + Test __GNUC__, not __GNU__. + Don't do `ps v' on VMS. + (gettime): Conditional code for VMS. + + * gcc.c: Define __GNUC__ as well as __GNU__. + __GNU__ will be deleted in a future version. + + * symout.c (symout_finish) [VMS]: Don't refer to `getwd' on VMS. + * symout.c (symout_init) [VMS]: Fatal error; GDB syms not supported. + + * parse.y (yylex): Handle DOLLARS_IN_IDENTIFIERS. + + * genoutput.c (gen_insn): Workaround for VMS printf %s bug. + + * gen*.c: Include config.h. Whenever exiting, use + SUCCESS_EXIT_CODE or FATAL_EXIT_CODE. + + * config-*.h: Define SUCCESS_EXIT_CODE and FATAL_EXIT_CODE. + * config-vms.h: New file, mostly like config-vax.h. + +Wed Feb 17 13:35:34 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * cccp.c: VMS support from Kashtan. + Some #include files are conditional. + Use file_size_and_mode instead of fstat. + When reading file contents, the size we get from that + is just an upper bound; don't assume it must match. + Replacement definitions of read and write for VMS. + Different default include directories. + Conditionalize the setrlimit code on RLIMIT_STACK. + Use SUCCESS_EXIT_CODE when exiting if no errors; + both that and FATAL_EXIT_CODE are not #defined if already defined. + + Treat $ as an identifier-character if DOLLARS_IN_IDENTIFIERS. + Rename the `delete' function as `delete_macro' + to avoid VMS name conflict. + + * cexp.y: Treat $ as an identifier-character if DOLLARS_IN_IDENTIFIERS. + + * stmt.c (fixup_memory_offset): Do big-endian compensation + only within a word, not for DImode vs SImode. + + * stmt.c (fixup_var_refs): Don't fix up the insn to load the var + from its own stack slot; delete it instead. + + * tm-ns32k.h (MODES_TIEABLE_P): DImode is like DFmode. + + * tree.c (MAX_HASH_TABLE): 1009 (more prime) instead of 1008. + + * decl.c (duplicate_decls): If merged type is OLD's type, + keep OLD's DECL_SIZE and DECL_SIZE_UNIT. + + * gen*.c (xmalloc, xrealloc): Call `fatal' if memory is full. + + * reload1.c (choose_reload_targets): If a mode doesn't fit the + reload register, and the insn is an ASM_OPERANDS, ignore the reload. + Otherwise, final would crash. + + * expmed.c (expand_shift): Two new strategies for lshr on short/char: + widen and do ashr, or widen and do extzv. + + * vax.md (peepholes): Use dead_or_set_p to check for eliminable + intermediate result, rather than requiring a match with final result. + + * local-alloc.c (block_alloc): Testing frame_pointer_needed is + enough; no need to test FRAME_POINTER_REQUIRED, etc. + * global-alloc.c (find_reg): Likewise. + * reload1.c (reload): Likewise for flag_omit_frame_pointer + + * jump.c (delete_insn): If not `optimize', don't complain + about finding an already-deleted insn in the chain. + +Tue Feb 16 17:14:54 1988 Richard Stallman (rms at wheaties.ai.mit.edu) + + * final.c: Don't define N_SOL and N_SLINE if already defined. + + * final.c (output_source_line): + Typo calling ASM_OUTPUT_SOURCE_FILENAME. + + * flow.c (INSN_VOLATILE): fix a typo. + +Fri Feb 12 16:48:16 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * final.c (final): for `asm' without operands, output literally. + +Thu Feb 11 12:44:41 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * symout.c (symout_record_fields): Handle nameless fields. + * symout.c (symout_record_field_names): Likewise. + + * typecheck.c (require_complete_type): `void' is a complete type. + * typecheck.c (build_function_call): Don't complain if result is void. + + * tm-hp9k320.h: Change definition of ASM_SPEC to +X, not -X. + + * cccp.c (main): Expected object file name for foo.cc is foo.o. + +Wed Feb 10 16:04:58 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * reload1.c (reload): Initialize `regmask' to zero. + Class number is in I, not in CLASS, when setting its elements. + Don't let J+K be too large. + + * reload1.c (potential_reload_regs): Make it a `short' + since that can't be unsigned. + + * cccp.c (warning): New function, called like `error'. + * cccp.c (do_define): Make redefinition just a warning. + +Tue Feb 9 13:28:00 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * decl.c (grokdeclarator): Don't be fooled by ERROR_MARK as a declspec. + + * toplev.c (compile_file): Strip final .c or .co from .sym file name. + + * gcc.c: When running `as', specify the .sym file if -gg. + +Mon Feb 8 11:26:26 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * expmed.c (store_fixed_bit_field): Don't try gen_lowpart on VALUE + if it's a subreg since it might lose; use convert_to_mode instead. + + * tm-hp9k320.h: Define TARGET_MEM_FUNCTIONS. + * expr.c (emit_block_move, emit_push_insn, clear_storage): + If TARGET_MEM_FUNCTIONS, generate calls to memcpy and memset + instead of bcopy and bzero. + * optabs.c (emit_cmp_insn): Likewise for memcmp vs bcmp. + + * stmt.c (expand_goto): New temp var to avoid RT/PC compiler bug. + +Sun Feb 7 12:20:23 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * flow.c (mark_used_regs, mark_set_regs): + Handle hard regs in multiword modes: set the bits for each + distinct register-number that makes up the multiword mode. + Necessary because function arg registers can inevitably + live across basic blocks. + + * cse.c (canon_hash): Function arg and value registers no longer + considered volatile, because flow should now handle the code that + can result from cse'ing them. + + * cse.c (make_regs_eqv): Abort if OLD is invalid. + * cse.c (reg_invalidate): Abort if reg already invalid has eqvs. + +Sat Feb 6 16:25:32 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * gcc.c (main): Specific error msg if no input files. + +Fri Feb 5 17:56:00 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * stmt.c (expand_decl, put_var_into_stack, assign_parms): + Set in_struct on a MEM if the variable is an aggregate or union. + * varasm.c (assemble_variable): Set in_struct on aggregate vars. + +Thu Feb 4 11:52:30 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * m68k.md (movsf): Correct two fmove.x to fmove.s. + + * expmed.c (extract_fixed_bit_field): + Must always generate an `and' to mask the bitfield + unless its width is the same as the output machine mode. + + * version 1.18 released. + +Wed Feb 3 08:41:20 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * fold-const.c (fold): Convert EXPR's operands before returning them. + +Tue Feb 2 15:35:18 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * reload.c (find_reloads_address_1): + + * typecheck.c (default_conversion): Handle COMPOUND_EXPR arrays. + +Mon Feb 1 18:53:05 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * ns32k.md: operand 0 of all unsigned divide/modulus insns + is now register_operand. + + * stdarg.h: Make va_list be char *, not char *[1]. + Latest draft doesn't say it must be an array type. + +Sun Jan 31 11:14:07 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * flow.c (find_basic_blocks): Add temp var to avoid Sequent + compiler bug. + + * tm-ns32k.h (GO_IF_LEGITIMATE_ADDRESS): Don't allow pushes or pops + since there are special insn patterns for them. + Resubroutinize and add temp vars to make expressions smaller. + * ns32k.md: Add a few more special stack insns; now there are enough. + + * tm-sequent.h: Definitions of DBX_NO_XREFS and DBX_CONTIN_LENGTH. + + * reload1.c (choose_reload_targets): Handling of reload_strict_low + is needed for input reloads as well as output, since a strict_low_part + operand is normally a read-write operand. + + * reload1.c (reload): The mode a reload needs is the wider of + the input and output modes--just as it is in choose_reload_targets. + + * reload.c (find_dummy_reload): If IN and OUT have different widths + and one of them exceeds a word, don't find any dummy reload. + + * toplev.c (compile_file): Allocate enough space for .jump2 filename. + +Sat Jan 30 10:35:46 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * output-ns32k.c (print_operand_address): + Print addresses of the form C1+(N*REG+C2) which currently + are accepted as legitimate memory addresses. + + * tm-sequent.h: Simple bugs in PRINT_OPERAND, TARGET_DEFAULT + and SEQUENT_ADDRESS_BUG. + + * gen*.c: Must explicitly exit; returning from `main' fails + to indicate nonzero status due to bug in Unix. + + * parse.y (check_line_number): Ignore entire line of unrecognized + #-directive; no error if it is `pragma'. + +Fri Jan 29 06:46:01 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * genrecog.c, genextract.c, genoutput.c: Define bcopy and/or bzero. + + * cccp.c (do_define): Make defn->argnames long enough in no-args case. + + * reload1.c (reload): Make basic_block_needs 0 until after the + frame pointer reg is spilled, so that ALL pseudos in it are spilled. + + * typecheck.c (truthvalue_conversion): + Strip a NOP_EXPR only if it extends, not if it truncates. + (build_unary_op): For TRUTH_NOT_EXPR, call invert_truthvalue + to simplify. + + * Fixes for HPUX support from cph: + * tm-hp9k320.h: Correct names of floating-point registers. + Fix typos in ASM_OUTPUT_OPCODE; also convert `fmove' to `fmov'. + * Makefile (comments for HPUX): + cph says -Wd,-X isn't needed in CFLAGS, nor -lBSD in CLIB. + Also that -g can't be used in CFLAGS with HP's pcc. + * conf-hp9k320.h: New file, like config-m68k.h but with + #defines for the bstring functions. + * m68k.md: Add else-clauses to the HPUX_ASM conditionals on cmp insns. + Reinsert mistakenly-deleted MOTOROLA conditionals around + some OUTPUT_JUMPs. + +Thu Jan 28 09:51:41 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * jump.c (jump_back_p): If TARGET is unconditional, return 0. + +Wed Jan 27 04:18:29 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * combine.c (subst): Simplify (plus (plus x c1) c2). + + * expr.c (emit_push_insn): Don't use small-block push-insns for BLKmode + when one of them would be affected by PUSH_ROUNDING. + Instead, make all the space and then copy. + * expr.c (expand_call): Don't apply PUSH_ROUNDING if BLKmode. + + * Allow `asm' with operands to be marked volatile. + * cse.c (canon_hash): Don't record ASM_OPERANDS that has `volatil'. + * loop.c (invariant_p): ASM_OPERANDS with `volatil' can't be invariant. + * flow.c (volatile_refs_p): Note ASM_OPERANDS that are volatile. + * stmt.c (expand_asm_operands): New arg VOL; mark ASM_OPERANDS as vol. + * typecheck.c (c_expand_asm_operands): New arg VOL. + * parse.y: allow a TYPE_QUAL after ASM. + + * Make cse handle `asm' with operands: + * cse.c (canon_hash): Hash string operands by contents, not address. + * cse.c (exp_equiv_p): Compare string operands with strcmp. + * rtl.c (rtx_equal_p): Compare string operands with strcmp. + + * decl.c (init_decl_processing): Once sizetype is set, + correct the type of the sizes of types already made. + + * cccp.c (do_defines): Don't reject #define foo{a}. + +Tue Jan 26 04:53:16 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * reload.c (find_reloads): Now that `asm' is limited to + MAX_RECOG_OPERANDS, eliminate dynamic allocation of `constraints' + and `constraints1', and go back to `recog_operand' instead of + `operands'. + + * typecheck.c (c_expand_asm_operands): New fn to handle `asm' for C. + Calls expand_asm_operands, and handles output operands that + the other function cannot handle. + + * parse.y: Call that function. + + * stmt.c (expand_asm_operands): Error if too many operands. + #include insn-config.h to get MAX_RECOG_OPERANDS. + + * expr.c (expand_assignment): Use store_field to handle + structure fields and array elements. + + * output-m68k.c (output_move_double): PUSHOP and POPOP were swapped. + Handle insns that push an sp-relative address onto sp; + these can arise with -fomit-frame-pointer. + BUG? Do unoffsetable mem refs using sp and fp lose? + + * m68k.md (movdi,movdf): Allow unoffsetable mem refs + only if the other operand is a register. + + * m68k.md (zero_extendqisi2): SGS conditionals deleted. + Supposedly the MOTOROLA syntax works for those addresses. + + * typecheck.c (default_conversion): + If flag_traditional, preserve unsignedness when promoting ints, + and promote float to double. + + * typecheck.c (build_binary_op_nodefault): + Allow comparisons between pointers and ints. + If not -traditional, warn about them. + +Mon Jan 25 02:11:18 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * expmed.c ({extract,store}_split_bit_field): + Functions {extract,store}_split_reg_bit_field now work for memory + also, and therefore are renamed. + * ({extract,store}_fixed_bit_field): Call those fns when a field + is split across two words. + Also, preserve the `volatil' bit on memory refs. + + * output-m68k.c (output_move_double): Handle nonoffsetable mem refs. + * m68k.md: Relax constraints on movdi, movdf. + + * decl.c (init_decl_processing): Define `int' and `char' first. + Set `sizetype' explicitly. + + * stmt.c (fixup_var_refs_1): May not just return when a SET + doesn't have VAR as its src or dest. + + * varasm.c: Don't include c-tree.h. + + * decl.c (build_struct): Split this function into three: + `xref_tag', `start_struct' and `finish_struct'. + `xref_tag' subsumes `xref_enum'. + + * parse.y (structsp): When parsing `struct foo {...}', define the tag + as a cross-ref before parsing the components. Use the three new fns. + + * regclass.c (regclass): Recognize new-format ASM_OPERANDS insns + with `asm_noperands', and scan their operands as usual. + + * cse.c: In numerous functions such as canon_hash, rtx_cost, etc. + that do tree-walk on rtx, handle vectors of subexpressions. + + * loop.c (invariant_p): Likewise. + + * jump.c (delete_insn): Two bugs: + If insn already deleted, return the first following nondeleted. + Deleting a jump's label can delete NEXT. Make sure return value + is always the first insn following INSN and not yet deleted. + +Sun Jan 24 02:27:49 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * rtl.def (ASM_OPERANDS): Change the rtl expression of an + `asm' with operands so it looks like this for one output operand: + (set OUTPUT (asm_operands:OUTPUTMODE INSNSTRING OUTPUTCONSTRAINT + 0 INPUTS INPUTCONSTRAINTS)). + and like this for multiple outputs: + (PARALLEL [ + (set OUTPUT0 (asm_operands:OUTPUTMODE INSNSTRING OUTPUTCONSTRAINT + 0 INPUTS INPUTCONSTRAINTS)). + (set OUTPUT1 (asm_operands:OUTPUTMODE1 INSNSTRING OUTPUTCONSTRAINT1 + 1 INPUTS INPUTCONSTRAINTS))]) + + * parse.y: Change parsing of `asm' to distinguish input and output + operands. Separate them with colon; separate the string with colon. + + * stmt.c (expand_asm_operands): Receive inputs and outputs separately. + Generate the new rtl format. + + * recog.c (asm_noperands, decode_asm_operands): New fns + for extracting the operands and constraints from these insns. + + * final.c (final): Recognize and output the new rtl format + using those new functions. + + * reload.c (find_reloads): Recognize and get constraints + from the new rtl format using those new functions. + New variable `operand_modes' holds the machine modes of the + operands, obtained one way for ASM_OPERANDS insns and another + for other insns. + + * rtl.c (note_stores): Calling convention + is changed: the first arg FUNCTION now receives as its 2nd arg + 1 if clobbering, 0 if setting. Used to be the CLOBBER or SET rtx. + + * local-alloc.c (reg_is_set): This fn is called from note_stores; + change its arguments. + + * tm-m68k.h (FIXUP_FRAME_POINTER_ADDRESSES): + Use frame_pointer_rtx to recognize intended frame-pointer refs + and not recognize pseudo-regs that were allocated to the frame + pointer register. + + * emit-rtl.c: All refs to frame pointer use a single rtx, in + frame_pointer_rtx. Likewise arg_pointer_rtx for the arg pointer. + If they are the same register, these are the same rtx. + Initialize them in init_emit. + * rtl.h: Declare these vars. + + * stmt.c (assign_parms, assign_stack_local): Use those rtx's. + +Sat Jan 23 00:32:10 1988 Richard Stallman (rms at frosted-flakes.ai.mit.edu) + + * reload.c (find_reloads): Don't combine_reloads if `&' constraint + was used. + + * parse.y: Parse `asm' with operands. + * stmt.c (expand_asm_params): New fn: generate an ASM_OPERANDS for + `asm' with operands. + * final.c (final): Output an ASM_OPERANDS insn-body. + * regclass.c (regclass): Ignore ASM_OPERANDS, like ASM_INPUT. + + * reload.c (find_reloads): Handle reloading of ASM_OPERANDS. + The number of operands can no longer be bounded. + For example we can't always put the operands in recog_operands. + + New locals OPERANDS and OPERAND_LOCS point to alloca'd vectors of + operands and their locations. New locals CONSTRAINTS and CONSTRAINTS1 + hold alloca'd vectors of constraints. + + Unfortunately this isn't enough; every vector with length + MAX_RECOG_OPERANDS needs to be dynamically allocated. + Would this be too slow? For now, a cheap "solution" is to delete + any insn that has too many operands. + + * rtl.def: Delete VOLATILE, UNCHANGING and UNDESCRIBED. + Add ASM_OPERANDS. + + * regclass.c (reg_class_record): Delete ref to UNCHANGING. + * loop.c (invariant_p): + * rtl.c (rtx_varies_p): + + * cccp.c: Define __VERSION__. + + * decl.c (shadow_tag): TYPE_NAME doesn't work to get the tag-name + of a struct, so use new function lookup_tag_reverse. + * decl.c (lookup_tag_reverse): Given a type, return its tag name. + + * symout.c (symout_source_file): Output one `struct source'. + * symout.c (symout_lines): Output all of them, and the sourcevector. + * gdbfiles.h: New file for communication between final.c and symout.c. + + * final.c (output_source_line): New arg WRITE_SYMBOLS says write + new GDB-format linenumber info. Assigns a filenum to each source + file name and keeps track of the correspondence. + + * cccp.c (do_include): Output the -M info after searching the dirs; + include the actual dir name. Don't generate "./" for current dir. + +Fri Jan 22 04:10:10 1988 Richard Stallman (rms at frosted-flakes) + + * tm-news800.h: Delete override of INDIRECTABLE_1_ADDRESS. + Output is faster if it doesn't use 32-bit displacements. + + * reload.c (combine_reloads): New function. + If possible, find an input reload + and an output reload that can be turned into one input-output reload. + The old output-reload is marked as inoperative: reload_out + and reload_in both zero. This is called from find_reloads. + + * reload1.c (reload, choose_reload_targets): Ignore inoperative + reloads. + + * Print warnings for variables that could be clobbered by `longjmp'. + * expr.c (expand_call): Generate a NOTE_INSN_SETJMP whenever + `setjmp' or `_setjmp' is called. + * flow.c (propagate_block): When NOTE_INSN_SETJMP is seen, + record the live regs in `regs_live_at_setjmp'. + * stmt.c (uninitialized_vars_warning): Warn about vars that have regs + that are set more than once and are marked in `regs_live_at_setjmp'. + Works through function `regno_clobbered_by_longjmp'. + * rtl.h: Define NOTE_INSN_SETJMP. + + * genrecog.c (try_merge_2): When enforce_modes, keep all the + alternatives segregated by modes and keep the modes in numerical order. + * genrecog.c (write_tree): Make conditions for switch-on-modes + know what difference enforce_mode makes. + +Thu Jan 21 00:12:35 1988 Richard Stallman (rms at frosted-flakes) + + * tm-ns32k.h: Use Stein's definitions of PRINT_OPERAND{,_ADDRESS}; + move the Sequent definitions info tm-sequent.h. + Handle %$ in both old and new PRINT_OPERAND. + Define CPP_PREDEFINES. + + * ns32k.md: Merge some features from Jan Stein's port: + strict_low_part insns, smart output of booleans with small + constant args, acbd insns generalized for other increments. + Use %$ wherever there is an explicit immediate. + Fix shortcomings of adjsp insns: use adjspd in general, + and use adjspb in all the cases that allow it. + Don't bother explicitly clearing CC_REVERSED. + For tstsf/tstdf, output the floating-zero constants + using {f,d}const0_rtx. + + A problem still remains, which is that the Sequent and the + other ns32k assembler syntax require different + + * typecheck.c (unary_complex_value): Use correct datatype for + compound-exprs. + + * gen*.c (main): Use obstack_init instead of obstack_begin. + + * vax.md: define_peephole for andl3 x,y,z; extzv z,....,z + + * m68k.md (tstsi): Use cmpw instead of cmpl to test addr reg. + + * tm-m68k.h: Bugs for 68000 when frame size is over 64k. + For FUNCTION_PROLOGUE, just subtract from sp instead of fp. + For FUNCTION_EPILOGUE, must put the size into a0 and then + all insns must be indexed by a0. And do this even on 68020. + + * tm-isi68.h: Similar changes. + * tm-news800.h, tm-hp9k320.h: Similar changes. + +Wed Jan 20 04:38:21 1988 Richard Stallman (rms at frosted-flakes) + + * cccp.c (error_with_line): New function. + Use it to report the "unterminated whatever" errors. + + * typecheck.c (build_unary_op): Recursive call had missing arg. + + * m68k.md (movhi): If MOTOROLA, the insn that fetches from a + case-dispatch table now defines the LI label as .+2. + * tm-news800.el, tm-hp9k320.h (PRINT_OPERAND_ADDRESS): + Don't subtract 2 when outputting the address in that insn. + +Tue Jan 19 00:02:33 1988 Richard Stallman (rms at frosted-flakes) + + * cse.c (cse_basic_block): Abort if more qtys were used than allocated. + +Mon Jan 18 04:44:28 1988 Richard Stallman (rms at frosted-flakes) + + * cccp.c (special_symbol): tm_mon is origin-0, not origin-1. + + * final.c (output_asm_insn): If %LETTER with no digits, + pass null pointer as the operand. + + * output-m68k.c (singlemove_string): Get rid of %e. + + * stmt.c (fixup_memory_subreg): Convert (SUBREG (MEM a)) to (MEM a'). + * stmt.c (fixup_var_ref_1): Use that fn for operands of + SIGN_EXTRACT and ZERO_EXTRACT, since (SUBREG:SI (REG:QI...)) + could have turned into (SUBREG:SI (MEM:QI...)), which is unsafe. + + * rtl.c (debug_rtx): Print an rtx on stderr, for debugging. + +Sun Jan 17 04:37:20 1988 Richard Stallman (rms at frosted-flakes) + + * gcc.c: options -M* treated like -M. + + * stmt.c (pushcase): Do nothing if the case index has error_mark type. + + * expr.c (expand_increment): Don't use queue for post-inc on memory + if the add insn requires register args. (Better code for RISCs.) + +Sat Jan 16 02:10:22 1988 Richard Stallman (rms at frosted-flakes) + + * ns32k.md: Change register_operand to general_operand. + * ns32k.md (udivmoddisi4): Use match_dup where required. + Comment it out because it can't accept two independent output args. + +Fri Jan 15 00:02:35 1988 Richard Stallman (rms at frosted-flakes) + + * toplev.c: Include sys/time.h only for BSD. For USG, use time.h. + This is correct for HPUX; don't know about others. + + * gcc.c (execute): Eliminate `union wait'. Make `status' an int. + * gcc.c (execute) [USG]: Use fork instead of vfork. + + * final.c (output_source_line): Use ASM_OUTPUT_SOURCE_{FILENAME,LINE} + if they are defined. + + * tm-hp9k320.h: New name for tm-hpux.h. + * tm-hp9k320.h (ASM_OUTPUT_LOCAL): Add 3rd arg to `lcomm' statements. + * tm-hp9k320.h (ASM_OUTPUT_{DOUBLE,FLOAT}): Use `double' and `float'. + * tm-hp9k320.h (CALL_USED_REGISTERS): Don't save any 68881 regs. + * tm-hp9k320.h (CPP_PREDEFINES): different names defined. + * tm-hp9k320.h (HPUX_ASM, NO_DBX_FORMAT, ASM_SPEC): define these. + * tm-hp9k320.h (ASM_OUTPUT_OPCODE): Convert `ftst' to `ftest'. + * tm-hp9k320.h: Define ASM_OUTPUT_SOURCE_{FILENAME,LINE}. + + * m68k.md: Rename `hpux' conditionals to `HPUX_ASM'. + * m68k.md: Reverse `fcmp' args if HPUX_ASM. + + * cccp.c (print_deps): 2 means give all files, 1 means only user files. + * cccp.c (do_include): Support that. + * cccp.c (main): -MM sets 1, -M alone sets 2. + * cccp.c (main): Give fatal error if I/O error in writing. + + * toplev.c (fatal_io_error): Report I/O error on given filename, + and exit. + + * toplev.c (compile_file): Detect error writing asm_out_file. + Always put asm file's name in asm_file_name for err msg. + * symout.c (symout_finish): Detect error writing symfile. + * symout.c (symout_init): Save filename in symfile_name for err msg. + + * gen*.c: Return 1 if ferror (stdout)--in case disk is full. + + * local-alloc.c (block_alloc): Don't crash if 1st rtx + in a PARALLEL is not a SET. + + * tm-m68k.h, tm-news800.h (PRINT_OPERAND). Eliminate code `%e'. + * m68k.md: Change `%e' to `e' everywhere. + * tm-hpux.h (ASM_OUTPUT_OPCODE): Output `move' as `mov'. + + * tm-m68k.h, tm-news800.h, tm-hpux.h (PRINT_OPERAND): + New code `%!' is output as the name for the cc register. + * m68k.md (insns that use andi to ccr): Use `%!' to avoid + conditionals. + + * cse.c: Record in qty_const_insn the insn that stored the + constant value of a qty. When making a REG_WAS_0 note, + store in it the insn that established the value 0. + + * vax.md (movsi): When checking a REG_WAS_0 note, + verify that the insn it points to hasn't been deleted or made a NOTE. + +Thu Jan 14 00:01:35 1988 Richard Stallman (rms at frosted-flakes) + + * toplev.c: Eliminate error_with_line and warning_with_line. + * parse.y, decl.c: Change remaining calls to those two. + + * tree.c (get_unwidened, get_narrower): To see if a COMPONENT_REF + is unsigned, look at the FIELD_DECL, not at the COMPONENT_REF. + + * rtl.c (print_rtx): Print /v for the `volatil' bit. + * expr.c (expand_assignment expand_expr): If handling a COMPONENT_REF, + note whether it is volatile. + + * fold-const.c (fold): a call to split_tree missed an argument. + + * flow.c (volatile_refs_p): Scan an rtx for volatile mem refs. + * flow.c (life_analysis): Record in INSN_VOLATILE which insns + have any volatile mem refs. + * flow.c (mark_used_regs): Always mark an insn with volatile mem refs. + Always pass INSN as an arg. New arg FINAL now says whether + this is the last time scanning. + * flow.c (propagate_block): Don't delete insns with volatile mem refs. + + * flow.c: Remove all refs to `obey_regdecls'. + Calling this with -noreg just doesn't help -W. + +Wed Jan 13 01:13:07 1988 Richard Stallman (rms at frosted-flakes) + + * decl.c (finish_decl): Error if auto var's size isn't known. + Change type to error_mark_node to avoid crash if the var + is used in an expression, since it has no DECL_RTL. + + * output-m68k.c (output_move_const_single): % -> %% for sprintf. + + * parse.y (yylex): Store token_buffer properly after ellipsis. + + * decl.c (duplicate_decls): Don't call layout_decl + for FUNCTION_DECL or TYPE_DECL. + + * toplev.c (warning_with_decl): New warning function with decl as arg. + * (error_with_decl): similar. + + * decl.c: Replace most `yylinerror' calls with `error_with_decl'. + + * decl.c (build_struct): Reform code to detect erroneous bit-fields. + All such errors are now detected here. + Promote bit-fields to int if appropriate. + If traditional, make all int bit-fields unsigned. + Set DECL_ALIGN for members that are not bit-fields. + + * decl.c (grokfield): Don't set DECL_ALIGN here. + + * stor-layout.c (layout_decl): Don't promote the type of a bit-field. + Use TREE_PACKED to distinguish a bit-field. + Don't check the width because build_struct did that. + + * m68k.md (cmpm): Reject if either operand (address) is a constant. + +Tue Jan 12 15:11:20 1988 Richard Stallman (rms at frosted-flakes) + + * cse.c (canon_reg): Never replace ANY hard reg from reg_rtx + because that could alter the machine mode. + + * tm-news800.h: Redefine INDIRECTABLE_1_ADDRESS only if MOTOROLA. + +Mon Jan 11 13:15:45 1988 Richard Stallman (rms at frosted-flakes) + + * jump.c (follow_jumps): If we find a cycle, make it a jump to self. + + * cse.c (predecide_loop_entry): Give up if chase more than 10 jumps. + +Sun Jan 10 14:52:42 1988 Richard Stallman (rms at frosted-flakes) + + * reload1.c (reload): basic_block_needs (new vector) gets 1 + for each basic block that needs a reload. + * reload1.c (spill_hard_reg): Don't spill pseudos that are + confined to a basic block which has no need for any reloads. + * reload1.c (reload): Each cycle that any element of basic_block_needs + changes from 0 to 1, must re-spill all previously spilled regs. + + * regclass.c (record_address_regs): + Skip the charging of ICOST if it is 0. + + * flags.h, toplev.c: New flag -fvolatile. + * typecheck.c (build_indirect_ref): If flag_volatile, + every INDIRECT_REF is marked with TREE_THIS_VOLATILE. + + * fold-const.c (fold): Test in TRUTH_NOT_EXPR case was backward. + Also result type is always `int'. + +Sat Jan 9 04:16:11 1988 Richard Stallman (rms at rice-krispies) + + * flags.h (flag_traditional): New flag. + * toplev.c: recognize -ftraditional and -traditional. + * parse.y (yylex): If flag_traditional, don't recognize + `signed', `const' or `volatile'. + + * decl.c (pushdecl): If flag_traditional, any extern decl + takes effect at top level. + + * tree.c (lvalue_or_else): New 2nd arg for use in error message. + * typecheck.c: All callers pass 2nd arg. + + * global-alloc.c: allocno_preferred_reg can specify a preferred + hard reg for each allocno. If so, try it first (new call to find_reg). + + * global-alloc.c (find_reg): New arg PREFREG specifies reg to try + first. + + * decl.c (build_struct): if :0 bit field at the end, round the + structure size to multiple of EMPTY_FIELD_BOUNDARY. + + * cse.c (make_regs_eqv): Was testing for reg_next_eqv[lastr] == 0 + and should be == -1. + + * reload1.c (reload_as_needed): Fix invalid optimization deleting + the previous store into a pseudo-reg that feeds an input-reload. + It is not safe because a later insn may look in the pseudo's stack + slot for the value. Delete the store only if we can eliminate the + pseudo entirely or if the current insn stores a new value there. + Also verify that reload_in[j] is a REG. + + * reload1.c (reload_as_needed): When doing an input reload from a + pseudo that was stored by the previous insn (not as a reload), + redirect the previous insn into the reload register, if this lets + us eliminate the pseudo entirely. + + * reload1.c (reload_as_needed): In both of the above cases, it's + impossible to prevent a stack slot since one was already assigned, + so don't alter reg_n_refs. Instead, set reg_renumber to record + that this pseudo did get a hard reg. + + * stmt.c: Set `volatil' in pseudo-regs for the user's variables. + + * jump.c (delete_insn): Do nothing if insn already deleted. + + * tm-sun{2,3}.h: #define STRUCTURE_SIZE_BOUNDARY 2 + for compatibility with Sun PCC. Note that 4.3 vax PCC + does not want this. + + * fold-const.c: Replace truncate_unsigned with force_fit_type + which truncates unsigned types and sign-extends signed types. + + * expr.c (do_jump): emit_queue before outputting the jump insns + that use the comparison. + + * stmt.c: Error message for any goto that jumps into a + binding contour that restores a stack level. + + TREE_PACKED (label) means label was defined inside + such a binding contour that is now exited. Using such a label + is an error. + + TREE_ADDRESSABLE (label) means label was used from a place + outside all such binding contours. If this is 1 when + TREE_PACKED is set to 1, it is an error. + + Any other invalid goto must have a fixup. fixup_gotos detects + such invalid gotos. fixup_gotos takes a second arg, which + is the first insn of the contour now being exited. + + * GNU C version 1.17. + +Local Variables: +mode: indented-text +left-margin: 8 +fill-column: 76 +version-control: never +End: |