Bob Manson <manson@charmed.cygnus.com>
* resource.c, resource.h: New files.
* haifa-sched.c (regno_use_in): Moved to rtlanal.c.
(split_block_insns): Moved to recog.c.
(update_flow_info): Make public.
* reorg.c: Moved the functions dealing with computing resource
usage to resource.c.
* sched.c (regno_use_in): Moved to rtlanal.c.
(update_flow_info): Make public.
(schedule_insns): Use split_block_insns.
* recog.c (split_block_insns): New function.
From-SVN: r24982
* c-common.c (declare_function_name): Declare predefinied variable
`__func__'.
* c-decl.c (flag_isoc9x): Set to 1 by default.
(c_decode_option): Handle -std= option. Remove -flang-isoc9x.
(grokdeclarator): Always emit warning about implicit int for ISO C 9x.
* c-parse.in: Allow constructors in ISO C 9x.
Rewrite designator list handling.
Allow [*] parameters.
Don't warn about comma at end of enum definition for ISO C 9x.
* cccp.c (c9x): New variable.
(rest_extension): New variable.
(print_help): Document new -std= option.
(main): Recognize -std= option. Set c9x appropriately.
(create_definition): Recognize ISO C 9x vararg macros.
* gcc.c (default_compilers): Adjust specs for -std options.
(option_map): Add --std.
(display_help): Document -std.
* toplev.c (documented_lang_options): Add -std and remove
-flang-isoc9x.
* c-lex.c (yylex): Recognize hex FP constants and call REAL_VALUE_ATOF
or REAL_VALUE_HTOF based on base of the constants.
* fold-const.c (real_hex_to_f): New function. Replacement function
for hex FP conversion if REAL_ARITHMETIC is not defined.
* real.c (asctoeg): Add handling of hex FP constants.
* real.h: Define REAL_VALUE_HTOF if necessary using ereal_atof or
real_hex_to_f.
Co-Authored-By: Richard Henderson <rth@cygnus.com>
Co-Authored-By: Stephen L Moshier <moshier@world.std.com>
From-SVN: r24049
* reorg.c (relax_delay_slots): When optimizing for code size, if a
return with a filled delay slot is followed by a return with an
unfilled delay slot, delete the first return and reemit the insn
that was previously in its delay slot.
From-SVN: r23729
* recog.h (enum op_type): Define.
(constrain_operands): Adjust prototype.
(recog_op_type): Declare new variable.
* recog.c (recog_op_type): New variable.
(insn_invalid_p): Allow modifying an asm statement after reload.
(extract_insn): Set up recog_op_type.
(constrain_operands): Lose INSN_CODE_NUM arg. All callers changed.
Don't compute operand types, use recog_op_type.
Use the information computed by extract_insn instead of the previous
method of finding it by insn code number.
* caller-save.c (init_caller_save): Use extract_insn, not insn_extract.
* reorg.c (fill_slots_from_thread): Likewise.
* reload1.c (reload_as_needed): Likewise.
(gen_reload): Likewise.
(inc_for_reload): Likewise.
(reload_cse_simplify_operands): Likewise.
Use the information computed by extract_insn instead of the previous
method of finding it by insn code number.
* genattrtab.c (write_attr_case): Generate call to extract_insn, not
insn_extract.
* final.c (final_scan_insn): Use extract_insn, not insn_extract.
(cleanup_operand_subregs): Use extract_insn, not insn_extract.
Use the information computed by extract_insn instead of the previous
method of finding it by insn code number.
* regmove.c (find_matches): Likewise. Change meaning of the return
value to be nonzero if the optimization can be performed, zero if
not. All callers changed.
Shorten some variable names to fix formatting problems.
(regmove_optimize): Shorten some variable names to fix formatting
problems.
Use the information computed by extract_insn instead of the previous
method of finding it by insn code number.
* regclass.c (scan_one_insn): Likewise.
(record_reg_classes): Don't compute operand types, use recog_op_type.
* reload.c (find_reloads): Lose CONSTRAINTS1 variable; use
recog_constraints instead.
From-SVN: r23529
1998-10-18 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>
* reorg.c (steal_delay_list_from_target) Check for insns that
modify the condition codes and effect the direction of the jump
in the sequence.
Sat Oct 17 13:09:09 1998 Graham <grahams@rcp.co.uk>
* function.c (purge_addressof_1): Replace call to
emit_insns_before() with emit_insn_before().
From-SVN: r23189
* flow.c (life_analysis_1): Do not clobber regs_ever_live after
reload. Never perform rescans of the insn chain after reload.
(propagate_block): Do not delete insn or create new autoinc addressing
modes after reload.
* jump.c (jump_optimize): Unconditionally use the code that was
previously conditional on PRESERVE_DEATH_INFO_REGNO_P.
* reload1.c (reload): When reloading is finished, delete all
REG_DEAD and REG_UNUSED notes.
(emit_reload_insns): Delete all code that was conditional on
PRESERVE_DEATH_INFO_REGNO_P.
(no_longer_dead_regs): Delete variable.
(reload_cse_delete_death_notes): Delete function.
(reload_cse_no_longer_dead): Delete function.
(reload_cse_regs_1): Delete all code to handle deletion of death
notes.
(reload_cse_noop_set_p): Likewise.
(reload_cse_simplify_set): Likewise.
(reload_cse_simplify_operands): Likewise.
(reload_cse_move2add): Likewise.
* reorg.c (used_spill_regs): Delete declaration.
(max_label_num_after_reload): Delete declaration.
(find_dead_or_set_registers): Don't assume that spill regs are
dead at a CODE_LABEL.
* rtlanal.c (dead_or_set_regno_p): Death notes are always accurate,
even after reload.
* sched.c (sched_analyze_insn): Likewise.
(update_flow_info): Likewise.
* haifa-sched.c (sched_analyze_insn): Likewise.
(update_flow_info): Likewise.
* tm.texi (PRESERVE_DEATH_INFO_REGNO_P): Delete documentation.
* toplev.c (max_label_num_after_reload): Delete variable.
(rest_of_compilation): Don't set max_label_num_after_reload.
Call life_analysis after reload_cse_regs if optimizing.
* config/gmicro/gmicro.h: Delete comment referring to
PRESERVE_DEATH_INFO_REGNO_P.
* config/i386/i386.h: Likewise.
* config/m88k/m88k.h: Likewise.
* config/m32r/m32r.h (PRESERVE_DEATH_INFO_REGNO_P): Delete definition.
* config/sh/sh.h: Likewise.
Accurate REG_DEAD notes after reload.
Co-Authored-By: Jeffrey A Law <law@cygnus.com>
From-SVN: r23120
* flow.c: Update comment.
(notice_stack_pointer_modification): New static function.
(record_volatile_insns): Use it.
(mark_regs_live_at_end): Mark the stack pointer as alive
at the end of the function if current_function_sp_is_unchanging
is set.
(life_analysis_1): Set current_function_sp_is_unchanging.
* function.c: Define it.
(init_function_start): Initialize it.
* output.h: Declare it.
* reorg.c (fill_simple_delay_slots, dbr_schedule): Mark
the stack pointer as alive at the end of the function if
current_function_sp_is_unchanging is set.
* i386.c (ix86_epilogue): Optimize the restoring
of the stack pointer.
From-SVN: r23009
* reorg.c (try_merge_delay_insns): Account for resources referenced
in each instruction in INSN's delay list before trying to eliminate
useless instructions. Similarly when looking at a trial insn's delay
slots.
* reorg.c (check_annul_list_true_false): New function.
(steal_delay_list_from_{target,fallthrough}): Call it and also
refine tests for when we may annul if already filled a slot.
(fill_slots_from_thread): Likewise.
(delete_from_delay_slot): Return newly-created thread.
(try_merge_delay_isns): Use its new return value.
From-SVN: r22685
* reorg.c (fill_simple_delay_slots): Do not abort if we encounter
an insn on the unfilled_slots_list that has no delay slots.
(fill_eager_delay_slots): Similarly.
From-SVN: r21977
* haifa-sched.c (haifa_classify_insn): TRAP_IF is risky.
(sched_analyze_2): Allow scheduling TRAP_IF.
* reorg.c (mark_referenced_resources): Examine operands of TRAP_IF.
* rtl.h (TRAP_CODE): New macro.
* rtl.def (TRAP_IF): Change second operand type to rtx.
* optabs.c (gen_cond_trap): New function.
(init_traps): New function.
(init_optabs): Call init_traps.
* expr.h: Declare gen_cond_trap.
* jump.c (jump_optimize): Optimize jumps to and around traps.
* sparc.md: Define trap instructions.
* rs6000.md: Define trap instructions.
* rs6000.c (print_operand): New code 'V' for trap condition.
(trap_comparison_operator): New function.
* m88k.md: Update use of TRAP_IF.
* tree.h (enum built_in_function): New function code BUILT_IN_TRAP.
* c-decl.c (init_decl_processing): New builtin __builtin_trap.
* expr.c (expand_builtin): Handle BUILT_IN_TRAP.
* expr.c (expand_builtin): Error if __builtin_longjmp second argument
is not 1.
From-SVN: r20543
* reorg.c (fill_slots_from_thread): Update REG_DEAD/REG_UNUSED notes
for any insns skipped at the start of a block because they were
redundant.
From-SVN: r19534
* reorg.c (fill_slots_from_thread): Don't steal delay list from target
if condition code of jump conflicts with opposite_needed.
* reorg.c (fill_slots_from_thread): Mark resources referenced in
opposite_needed thread. Return delay_list even when cannot get
any more delay insns from end of subroutine.
* reorg.c (fill_slots_from_thread): New parameter, delay_list.
All callers changed.
From-SVN: r18348
* reorg.c (dbr_schedule): At end of this pass, add REG_BR_PRED
note holding get_jump_flags() calculation to all JUMP_INSNs.
* rtl.h (enum reg_note): New note types REG_BR_PRED and REG_SAVE_AREA.
* rtl.c (reg_note_name): Add new note types.
From-SVN: r15670
* reorg.c (dbr_schedule): Allow current_function_return_rtx
to be something other than a REG.
* function.c (expand_function_end): Fix current_function_return_rtx
if it was a pseudo.
Brought over from the fsf/devo.
From-SVN: r14972
(mark_target_live_regs): Delete loop looking forward from target
and instead call find_dead_or_set_registers.
(fix_reg_dead_note): New function.
(fill_slots_from_thread): Call it.
From-SVN: r11091