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* attribs.c (decl_attributes): Avoid emitting a warning if
ATTR_FLAG_BUILT_IN.
* doc/rtl.texi (CALL_INSN_FUNCTION_USAGE): Use lowercase for rtx
codes. Document meaning of sets inside CALL_INSN_FUNCTION_USAGE.
* c-family/c-common.c (DEF_ATTR_STRING): Define and undefine as
necessary.
* builtin-attrs.def (DEF_ATTR_FOR_STRING): Define. Use it to
define a string "1".
(ATTR_RET1_NOTHROW_NONNULL_LEAF): New attr definition.
* builtins.def (BUILT_IN_MEMCPY, BUILT_IN_MEMMOVE, BUILT_IN_MEMSET,
BUILT_IN_STRCPY): Use it for these functions.
* postreload.c (reload_combine): Deal with SETs inside
CALL_INSN_FUNCTION_USAGE.
* caller-save.c (setup_save_areas, save_call_clobbered_regs):
Look for REG_RETURNED notes and use a cheap restore if possible.
* ira-int.h (struct ira_allocno): New member cheap_calls_crossed_num.
(ALLOCNO_CHEAP_CALLS_CROSSED_NUM): New macro.
* ira-build.c (ira_create_allocno, create_cap_allocno,
propagate_allocno_info, propagate_some_info_from_allocno,
copy_info_to_removed_store_destination, ira_flattening): Handle it.
* ira-lives.c (pseudo_regno_single_word_and_live_p,
find_call_crossed_cheap_reg): New static functions.
(process_bb_node_lives): Look for SETs in CALL_INSN_FUNCTION_USAGE,
and set ALLOCNO_CHEAP_CALLS_CROSSED_NUM if possible. Also make
a REG_RETURNED note in that case.
* ira.c (setup_reg_renumber): Change assert to allow cases where
allocnos only cross calls for which they are cheap to restore.
* ira-costs.c (ira_tune_allocno_costs): Compare
ALLOCNO_CALLS_CROSSED_NUM to ALLOCNO_CHEAP_CALLS_CROSSED_NUM rather
than 0.
* reg-notes.def (REG_RETURNED): New note.
* cse.c (cse_insn): Likewise.
* sched-deps.c (sched_analyze_insn): Likewise.
* expr.c (init_block_move_fn): Set a "fn spec" attribute.
* calls.c (decl_return_flags): New static function.
(expand_call): Generate a SET in CALL_INSN_FUNCTION_USAGE for
functions that return one of their arguments.
* lto/lto-lang.c (handle_fnspec_attribute): New static function.
(lto_attribute_table): Add "fn spec".
(DEF_ATTR_STRING): Define and undefine along with the other macros.
* regcprop.c (struct kill_set_value_data): New.
(kill_set_value): Interpret data as a pointer to such a struct.
Do nothing if the caller wants the register to be ignored.
(copyprop_hardreg_forward_1): Handle SETs in CALL_INSN_FUNCTION_USAGE.
testsuite/
* gcc.target/i386/retarg.c: New test.
From-SVN: r187459
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From-SVN: r181154
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* reg-notes.def (DEP_CONTROL): New.
* sched-ebb.c (add_deps_for_risky_insns): Add a REG_DEP_CONTROL when
not doing speculation.
* rtlanal.c (record_hard_reg_sets, find_all_hard_reg_sets,
record_hard_reg_uses_1, record_hard_reg_uses): New functions.
* function.c (record_hard_reg_sets, record_hard_reg_uses,
record_hard_reg_uses_1): Remove; move to rtlanal.c.
* lists.c (copy_INSN_LIST, concat_INSN_LIST): New functions.
* haifa-sched.c: Swap includes of "rtl.h" and "hard-reg-set.h".
(MUST_RECOMPUTE_SPEC_P): New macro.
(real_insn_for_shadow): New function.
(cond_clobbered_p, recompute_todo_spec, check_clobbered_conditions,
toggle_cancelled_flags): New static functions.
(schedule_insn): Relax an assert to only check for empty hard back
dependencies. Skip cancelled dependencies. Call
check_clobbered_conditions.
(copy_insn_list): Remove function, renamed moved to lists.c.
(save_backtrack_point): Use new spelling copy_INSN_LIST.
(unschedule_insns_until): Ensure TODO_SPEC is reset properly.
(restore_last_backtrack_point): Likewise. Call toggle_cancelled_flags.
(estimate_insn_tick): Ignore cancelled dependencies.
(haifa_speculate_insn): Move declaration.
(try_ready): Move code into recompute_todo_spec and call it. Tweak
some asserts. Ensure predicated patterns are restored if necessary.
Dump DEP_CONTROL flag.
(haifa_change_pattern): Merge with sched_change_pattern.
(sched_change_pattern): Remove function.
* sched-deps.c (NON_FLUSH_JUMP_KIND, NON_FLUSH_JUMP): Remove. All
uses changed to simply not test NON_FLUSH_JUMP_P.
(ds_to_dk, dk_to_ds, dump_dep, ds_to_dt, dump_ds, check_dep): Handle
REG_DEP_CONTROL.
(dep_spec_p): If DO_PREDICATION, REG_DEP_CONTROL is speculative.
(reg_pending_control_uses, control_dependency_cache): New static
variables.
(sched_get_reverse_condition_uncached): New function.
(sd_find_dep_between): Remove pointless assert. Look in
control_dependency_cache.
(ask_dependency_caches, set_dependency_caches, sd_delete_dep,
extend_dependency_caches, sched_deps_finish): Handle REG_DEP_CONTROL
and control_dependency_cache.
(sd_unresolve_dep): Use dep_spec_p.
(add_dependence): Now a wrapper around add_dependence_1, handling
REG_DEP_CONTROL specially.
(flush_pending_lists): Clear pending_jump_insns.
(sched_analyze_1): Handle pending_jump_insns like a memory flush.
(sched_analyze_2): Unconditionally add to pending memory flushes,
keep previous behaviour but apply it to pending_jump_insns instead.
(sched_analyze_insn): Defer adding jump reg dependencies using
reg_pending_control_uses; add them to the control_uses list. Handle
pending_jump_insns and control_uses when adding dependence lists.
(deps_analyze_insn): Update INSN_COND_DEPS.
(deps_analyze_insn): Add jumps to pending_jump_insns rather than
last_pending_memory_flush.
(init_deps): Initialize pending_jump_insns.
(free_deps): Free control_uses.
(remove_from_deps): Remove from pending_jump_insns.
(init_deps_global): Allocate reg_pending_control_uses).
(finish_deps_global): Free it.
(add_dependence_1): Renamed from add_dependence. Handle
REG_DEP_CONTROL.
* rtl.h (record_hard_reg_uses, find_all_hard_reg_sets): Declare.
(copy_INSN_LIST, concat_INSN_LIST): Declare.
* sched-int.h (struct deps_reg): Add control_uses.
(struct deps_desc): Add pending_jump_insns.
(struct _haifa_deps_insn_data): Add cond_deps.
(struct _haifa_insn_data): Add must_recompute_spec and predicated_pat.
(INSN_COND_DEPS, PREDICATED_PAT): New macros.
(BITS_PER_DEP_WEAK): Adjust for two extra bits in the word.
(DEP_CONTROL): New macro.
(DEP_TYPES): Include it.
(HARD_DEP): Adjust definition.
(DEP_CANCELLED): New macro.
(enum SCHED_FLAGS): Add DO_PREDICATION.
(sched_get_reverse_condition_uncached, real_insn_for_shadow): Declare.
* sched-rgn.c (concat_INSN_LIST): Remove function.
(deps_join): Handle pending_jump_insns.
(free_pending_lists): Likewise.
* config/c6x/c6x.c (c6x_set_sched_flags): Set DO_PREDICATION for final
schedule.
From-SVN: r180302
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PR target/49864
* reg-notes.def (REG_ARGS_SIZE): New.
* calls.c (emit_call_1): Emit REG_ARGS_SIZE for call_pop.
(expand_call): Add REG_ARGS_SIZE to emit_stack_restore.
* cfgcleanup.c (old_insns_match_p): Don't allow cross-jumping to
different stack levels.
* combine-stack-adj.c (adjust_frame_related_expr): Remove.
(maybe_move_args_size_note): New.
(combine_stack_adjustments_for_block): Use it.
* combine.c (distribute_notes): Place REG_ARGS_SIZE.
* dwarf2cfi.c (dw_cfi_row_struct): Remove args_size member.
(dw_trace_info): Add beg_true_args_size, end_true_args_size,
beg_delay_args_size, end_delay_args_size, eh_head, args_size_undefined.
(cur_cfa): New.
(queued_args_size): Remove.
(add_cfi_args_size): Assert size is non-negative.
(stack_adjust_offset, dwarf2out_args_size): Remove.
(dwarf2out_stack_adjust, dwarf2out_notice_stack_adjust): Remove.
(notice_args_size, notice_eh_throw): New.
(dwarf2out_frame_debug_def_cfa): Use cur_cfa.
(dwarf2out_frame_debug_adjust_cfa): Likewise.
(dwarf2out_frame_debug_cfa_offset): Likewise.
(dwarf2out_frame_debug_expr): Likewise. Don't stack_adjust_offset.
(dwarf2out_frame_debug): Don't handle non-frame-related-p insns.
(change_cfi_row): Don't emit args_size.
(maybe_record_trace_start_abnormal): Split out from ...
(maybe_record_trace_start): Here. Set args_size_undefined.
(create_trace_edges): Update to match.
(scan_trace): Handle REG_ARGS_SIZE.
(connect_traces): Connect args_size between EH insns.
* emit-rtl.c (try_split): Handle REG_ARGS_SIZE.
* explow.c (suppress_reg_args_size): New.
(adjust_stack_1): Split out from ...
(adjust_stack): ... here.
(anti_adjust_stack): Use it.
(allocate_dynamic_stack_space): Suppress REG_ARGS_SIZE.
* expr.c (mem_autoinc_base): New.
(fixup_args_size_notes): New.
(emit_single_push_insn_1): Rename from emit_single_push_insn.
(emit_single_push_insn): New. Generate REG_ARGS_SIZE.
* recog.c (peep2_attempt): Handle REG_ARGS_SIZE.
* reload1.c (reload_as_needed): Likewise.
* rtl.h (fixup_args_size_notes): Declare.
From-SVN: r177218
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* reg-notes.def (REG_CFA_FLUSH_QUEUE): New.
* dwarf2out.c (dwarf2out_frame_debug): Handle it.
* final.c (final_scan_insn): Look for it, and invoke
dwarf2out_frame_debug before the insn if found.
From-SVN: r175729
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* reg-notes.def (REG_CFA_WINDOW_SAVE): New.
* dwarf2out.c (dwarf2out_frame_debug): Handle it.
(dwarf2out_frame_debug_cfa_window_save): Rename from
dwarf2out_window_save; make static.
* tree.h (dwarf2out_window_save): Don't declare.
* config/sparc/sparc.c (sparc_dwarf_handle_frame_unspec): Remove.
(TARGET_DWARF_HANDLE_FRAME_UNSPEC): Remove.
(emit_save_register_window): Rename from gen_save_register_window;
emit the insn and add REG_CFA_* notes.
(sparc_expand_prologue): Update to match.
* config/sparc/sparc.md (save_register_window_1): Simplify from
save_register_window<P:mode>.
From-SVN: r175297
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* doc/invoke.texi: Remove reference to compiler internals from
user documentation.
* reg-notes.def: Remove REG_VALUE_PROFILE.
* combine.c (distribute_notes): Do not handle REG_VALUE_PROFILE.
From-SVN: r169861
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We had been relying on some extremely fragile code within
dwarf2out in order to guess what to do with aligned stack
frames, which broke when we decided to perform the stores
to the aligned stack frame via EBP instead of ESP.
Instead, emit the appropriate unwinding instructions from
the backend. This requires adding a new reg-note in order
to describe a register save at an arbitrary address.
From-SVN: r162889
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PR debug/43290
* reg-notes.def (REG_CFA_SET_VDRAP): New note.
* dwarf2out.c (dwarf2out_frame_debug_expr): Remove rule 20 - setting
of fde->vdrap_reg.
(dwarf2out_frame_debug): Handle REG_CFA_SET_VDRAP note.
(based_loc_descr): Only express drap or vdrap regno based expressions
using DW_OP_fbreg when not optimizing.
* config/i386/i386.c (ix86_get_drap_rtx): When not optimizing,
make the vDRAP = DRAP assignment RTX_FRAME_RELATED_P and add
REG_CFA_SET_VDRAP note.
PR debug/36728
* gcc.dg/guality/pr36728-1.c: New test.
* gcc.dg/guality/pr36728-2.c: New test.
From-SVN: r157363
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* cfgcleanup.c (try_crossjump_to_edge): Only skip past
NOTE_INSN_BASIC_BLOCK.
* cfglayout.c (duplicate_insn_chain): Copy epilogue insn marks.
Duplicate NOTE_INSN_EPILOGUE_BEG notes.
* cfgrtl.c (can_delete_note_p): Allow NOTE_INSN_EPILOGUE_BEG
to be deleted.
* dwarf2out.c (struct cfa_loc): Change indirect field to bitfield,
add in_use field.
(add_cfi): Disable check redefining cfa away from drap.
(lookup_cfa_1): Add remember argument; handle remember/restore.
(lookup_cfa): Pass remember argument.
(cfa_remember): New.
(compute_barrier_args_size_1): Remove sibcall check.
(dwarf2out_frame_debug_def_cfa): New.
(dwarf2out_frame_debug_adjust_cfa): New.
(dwarf2out_frame_debug_cfa_offset): New.
(dwarf2out_frame_debug_cfa_register): New.
(dwarf2out_frame_debug_cfa_restore): New.
(dwarf2out_frame_debug): Handle REG_CFA_* notes.
(dwarf2out_begin_epilogue): New.
(dwarf2out_frame_debug_restore_state): New.
(dw_cfi_oprnd1_desc): Handle DW_CFA_remember_state,
DW_CFA_restore_state.
(output_cfi_directive): Likewise.
(convert_cfa_to_fb_loc_list): Likewise.
(dw_cfi_oprnd1_desc): Handle DW_CFA_restore.
* dwarf2out.h: Update.
* emit-rtl.c (try_split): Don't split RTX_FRAME_RELATED_P.
(copy_insn_1): Early out for null.
* final.c (final_scan_insn): Call dwarf2out_begin_epilogue
and dwarf2out_frame_debug_restore_state.
* function.c (prologue, epilogue, sibcall_epilogue): Remove.
(prologue_insn_hash, epilogue_insn_hash): New.
(free_after_compilation): Adjust freeing accordingly.
(record_insns): Create hash table if needed; push insns into
hash instead of array.
(maybe_copy_epilogue_insn): New.
(contains): Search hash table instead of array.
(sibcall_epilogue_contains): Remove.
(thread_prologue_and_epilogue_insns): Split eh_return insns
and mark them as epilogues.
(reposition_prologue_and_epilogue_notes): Rewrite epilogue
scanning in terms of basic blocks.
* insn-notes.def (CFA_RESTORE_STATE): New.
* jump.c (returnjump_p_1): Accept EH_RETURN.
(eh_returnjump_p_1, eh_returnjump_p): New.
* reg-notes.def (CFA_DEF_CFA, CFA_ADJUST_CFA, CFA_OFFSET,
CFA_REGISTER, CFA_RESTORE): New.
* rtl.def (EH_RETURN): New.
* rtl.h (eh_returnjump_p, maybe_copy_epilogue_insn): Declare.
* config/bfin/bfin.md (UNSPEC_VOLATILE_EH_RETURN): Remove.
(eh_return_internal): Use eh_return rtx; split w/ epilogue.
* config/i386/i386.c (gen_push): Update cfa state.
(pro_epilogue_adjust_stack): Add set_cfa argument. When true,
add a CFA_ADJUST_CFA note.
(ix86_dwarf_handle_frame_unspec): Remove.
(ix86_expand_prologue): Update cfa state.
(ix86_emit_restore_reg_using_pop): New.
(ix86_emit_restore_regs_using_pop): New.
(ix86_emit_leave): New.
(ix86_emit_restore_regs_using_mov): Add CFA_RESTORE notes.
(ix86_expand_epilogue): Add notes for unwinding the epilogue.
* config/i386/i386.h (struct machine_cfa_state): New.
(ix86_cfa_state): New.
* config/i386/i386.md (UNSPEC_EH_RETURN): Remove.
(eh_return_internal): Merge from eh_return_<mode>,
use eh_return rtx, split w/ epilogue.
From-SVN: r147995
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From-SVN: r144324
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* see.c (see_analyse_one_def): Do not look for REG_LIBCALL and
REG_RETVAL notes.
(see_update_relevancy): Likewise.
* fwprop.c (try_fwprop_subst): Likewise.
* rtlanal.c (noop_move_p): Likewise.
* builtins.c (expand_buitlin_mathfn): Don't try to add REG_EQUAL
notes to non-existing libcall blocks.
* cse.c (cse_insn): Change prototype. Don't update libcall notes.
Remove orig_set.
(cse_extended_basic_block): Don't track libcall and no-conflict notes.
(dead_libcall_p): Remove.
(delete_trivially_dead_insns): Don't use it.
* web.c (union_defs): Remove comment about keeping nops.
* gcse.c (hash_scan_insn): Don't take libcall pointers.
(compute_hash_table_work): Don't track libcall notes.
(do_local_cprop): Don't take libcall pointers. Don't update
libcall notes.
(adjust_libcall_notes): Deleted.
(local_cprop_pass): Remove stack for nested libcalls (which shouldn't
ever have existed in the first place).
(replace_store_insn): Don't try to remove libcall notes.
* lower-subreg.c (move_libcall_note, move_retval_note): Deleted.
(resolve_reg_notes): Don't call them.
(resolve_simple_move): Likewise.
(decompose_multiword_subregs): Remove block handling REG_RETVAL notes.
Don't remove REG_RETVAL notes.
* emit-rtl.c (try_split): Don't update libcall notes.
(emit_copy_of_insn_after): Dito.
* cselib.c (cselib_current_insn_in_libcall): Remove.
(cselib_process_insn): Don't set/clear it.
(new_elt_loc_list): Don't record it.
(cselib_init): Don't initialize it.
* cselib.c (struct elt_loc_list): Remove in_libcall field.
* loop-invariant.c (find_invariant_insn): Don't look for libcall
notes.
* sched-deps.c (sched_analyze_insn): Don't group libcall blocks.
(sched_analyze): Don't set up deps->libcall_block_tail_insn.
(init_deps): Don't initialize it.
* sched-int.h (struct deps): Rremove libcall_block_tail_insn field.
* combine.c (delete_noop_moves): Don't update libcall notes.
(can_combine_p): Remove now pointless #if 0 block.
(try_combine): Remove another obsolete #if 0 block.
(distribute_notes): Don't distribute libcall notes.
* reg-notes.def (REG_LIBCALL, REG_RETVAL): Remove.
* dce.c (libcall_dead_p): Remove.
(delete_unmarked_insns): Don't handle libcall blocks.
(preserve_libcall_for_dce): Remove.
(prescan_insns_for_dce): Don't special-case libcall block insns.
* reload1 (reload): Don't handle libcall notes.
* doc/rtl.texi (REG_LIBCALL, REG_RETVAL, REG_LIBCALL_ID): Remove
documentation.
From-SVN: r136861
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2008-05-14 Kenneth Zadeck <zadeck@naturalbridge.com>
* doc/rtl.texi: Removed reference to REG_NO_CONFLICT notes.
* optabs.c (expand_binop, expand_absneg_bit, expand_unop,
expand_copysign_bit, ): Change call to emit_no_conflict_block to
emit_insn and remove unneeded code to construct extra args.
(emit_no_conflict_block): Removed.
* optabls.h: (emit_no_conflict_block): Removed.
* cse.c (cse_extended_basic_block): Remove search for
REG_NO_CONFLICT note.
* global.c: Removed incorrect comment added in revision 117.
* expr.c (convert_move): Change call to emit_no_conflict_block to
emit_insn.
* recog.c: Change comments so that they do not mention
REG_NO_CONFLICT.
* local_alloc.c (combine_regs): Removed last parameter.
(no_conflict_p): Removed.
(block_alloc): Removed note, no_conflict_combined_regno and set
local vars. Removed all code to process REG_NO_CONFLICT blocks.
(combine_regs): Removed already_dead and code to look for
REG_NO_CONFLICT notes.
* lower_subreg (remove_retval_note): Removed code to look for
REG_NO_CONFLICT block.
(resolve_reg_notes): Removed REG_NO_CONFLICT case.
(resolve_clobber): Remove code to process libcalls that have
REG_NO_CONFLICT notes.
* loop_invariant.c (find_invariant_insn): Removed REG_NO_CONFLICT
case.
* combine.c (can_combine_p, distribute_notes): Removed REG_NO_CONFLICT
case.
* config/cris/cris.md (movdi pattern): Changed
emit_no_conflict_block to emit_insns.
* config/mn10300/mn10300.md (absdf2, negdf2 patterns): Ditto.
* config/m68k/m68k.md (negdf2, negxf2, absdf2, absxf2 patterns):
Ditto.
* reg-notes.def (NO_CONFLICT): Removed.
From-SVN: r135289
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PR rtl-optimization/34773
* reg-notes.def (EQUAL): Mention significance of combination of
REG_EQUAL and REG_RETVAL.
* fwprop.c (try_fwprop_subst): Don't add REG_EQUAL to an
insn that has a REG_RETVAL.
From-SVN: r132053
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PR rtl-optimization/33644
* cfgcleanup.c: Do not include dce.h.
* cfgrtl.c (delete_insn_chain_and_edges): Resurrect.
* combine.c (distribute_notes): Delete REG_LIBCALL_ID case.
* dce.c (something_changed): Delete.
(libcall_dead_p): New predicate.
(delete_unmarked_insns): Use it to delete dead libcalls.
Deal with REG_LIBCALL and REG_RETVAL notes.
(prescan_libcall_for_dce): New function.
(prescan_insns_for_dce): Use it to deal with libcalls.
(mark_reg_dependencies): Do nothing special for libcalls.
(dce_process_block): Likewise.
(fast_dce): Delete unused local variable.
(run_fast_dce): Do not return a value.
* dce.h (struct df): Delete.
(run_fast_dce): Adjust prototype.
* optabs.c (libcall_id): Delete.
(maybe_encapsulate_block): Do not emit REG_LIBCALL_ID notes.
(emit_no_conflict_block): Do not look for REG_LIBCALL_ID notes.
* reload1.c (reload): Delete REG_LIBCALL_ID case.
* rtl.h (delete_insn_chain_and_edges): Resurrect prototype.
* see.c (see_update_relevancy): Look for REG_LIBCALL and REG_RETVAL
notes instead of REG_LIBCALL_ID notes.
* reg-notes.def (LIBCALL_ID): Delete.
* Makefile.in (see.o): Add dce.h dependency.
(cfgcleanup.o): Remove dce.h dependency.
From-SVN: r129556
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* doc/rtl.texi (Insns): Specify when a label_ref makes a jump_insn.
Similar for what label_refs can go in the JUMP_TARGET field. Split
REG_LABEL documentation into REG_LABEL_TARGET and REG_LABEL_OPERAND.
* reload.c (find_reloads): Generate REG_LABEL_OPERAND, not
REG_LABEL when replacing an operand with a LABEL_REF for a
non-jump insn.
(subst_reloads): When replacing a LABEL_REG with a register,
instead of generating a REG_LABEL note, assert that there already
is one or that the label is a known target for the insn.
* rtlanal.c (computed_jump_p): Instead of looking for a REG_LABEL
note, check the JUMP_LABEL field. Remove "else" after return.
* reorg.c (emit_delay_sequence): Replace case for REG_LABEL with
cases for REG_LABEL_OPERAND and REG_LABEL_TARGET.
(fill_slots_from_thread): Handle both REG_LABEL_OPERAND and
REG_LABEL_TARGET notes, including the JUMP_TARGET field on JUMP_P
insns. Iterate over all notes; don't assume there's only one.
* cse.c (recorded_label_ref): Adjust comment to refer to
REG_LABEL_OPERAND.
(cse_extended_basic_block): Do LABEL_REF check for all INSN_P
insns, not just NONJUMP_INSN_P.
(check_for_label_ref): For JUMP_P insns, check that the LABEL_REF
isn't a jump target.
* jump.c (rebuild_jump_labels): Adjust head comment.
(init_label_info): Ditto. Remove REG_LABEL_OPERAND notes only;
don't reset REG_LABEL_TARGET notes, including the JUMP_LABEL field.
(mark_all_labels): For JUMP_P insns without a target, check if the
the target is noted on the previous nonjump insn.
(mark_jump_label_1): New function, guts from mark_jump_label.
<case IF_THEN_ELSE>: Handle first operand as a non-target when
marking jump target labels.
<case LABEL_REF>: Adjust for whether to generate a
REG_LABEL_TARGET or a REG_LABEL_OPERAND note.
For 'E' format rtl, iterate in descending element order.
(delete_related_insns): Handle both REG_LABEL_TARGET and
REG_LABEL_OPERAND notes. For JUMP_P insns with labels with zero
reference count, delete and fallthrough. Move finding-next-
non-deleted insn last in the function. Look at all INSN_P insns
for REG_LABEL_OPERAND notes.
(redirect_jump_2): Assert that OLABEL equals the old JUMP_LABEL of
JUMP.
* print-rtl.c (print_rtx): For JUMP_P insns and a non-NULL
JUMP_LABEL, output the INSN_UID of it.
* gcse.c: Adjust comments as appropriate to say REG_LABEL_OPERAND
and/or REG_LABEL_TARGET.
(add_label_notes): Only add REG_LABEL_OPERAND notes. Put in line
with jump.c copy by only adding notes for labels actually
referenced in the insn.
* emit-rtl.c (try_split): Don't assume only NONJUMP_INSN_P need
usage count increment; handle all INSN_P trial insns.
(emit_copy_of_insn_after): Change to not copy REG_LABEL_OPERAND
notes.
* rtl.h (struct rtx_def) <volatil>: Adjust to mention
REG_LABEL_TARGET and REG_LABEL_OPERAND.
(LABEL_REF_NONLOCAL_P): Allow REG_LABEL_TARGET and
REG_LABEL_OPERAND.
* combine.c (distribute_notes): Adjust for REG_LABEL_TARGET on
JUMP_P insns and REG_LABEL_OPERAND everywhere.
* sched-rgn.c (is_cfg_nonregular): Check for REG_LABEL_OPERANDS
on all INSN_P insns.
* reg-notes.def (LABEL_TARGET, LABEL_OPERAND): Split from LABEL.
* cfgrtl.c (delete_insn): Adjust to handle REG_LABEL_TARGET and
REG_LABEL_OPERAND notes.
* reload1.c (calculate_needs_all_insns): Adjust comments.
(set_label_offsets): Adjust to look for REG_LABEL_OPERAND notes.
* config/alpha/alpha.md (split for load of an address into a
four-insn sequence on Unicos/Mk): Adjust to use
REG_LABEL_OPERAND.
* config/sh/sh.md (sh_reorg, final_prescan_insn): Ditto.
From-SVN: r128287
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License and to point readers at the COPYING3 file and the FSF's license web page.
From-SVN: r126948
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From-SVN: r125624
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time/space)
* sched-int.h (ds_to_dk, dk_to_ds): Declare functions.
(struct _dep): New type.
(dep_t): New typedef.
(DEP_PRO, DEP_CON, DEP_KIND): New access macros.
(DEP_STATUS): New access macro. The macro with the same name was
renamed to DEP_LINK_STATUS.
(dep_init): Declare function
(struct _dep_link): New type.
(dep_link_t): New typedef.
(DEP_LINK_NODE, DEP_LINK_NEXT, DEP_LINK_PREV_NEXTP): New access macros.
(DEP_LINK_DEP, DEP_LINK_PRO, DEP_LINK_CON, DEP_LINK_KIND): New macros.
(DEP_LINK_STATUS): New macro.
(debug_dep_links): New debug function.
(struct _deps_list): New type.
(deps_list_t): New typedef.
(DEPS_LIST_FIRST): New access macro.
(FOR_EACH_DEP_LINK): New cycle macro.
(create_deps_list, free_deps_list, delete_deps_list): Declare
functions.
(deps_list_empty_p, debug_deps_list, add_back_dep_to_deps_list): Ditto.
(find_link_by_pro_in_deps_list, find_link_by_con_in_deps_list): Ditto.
(copy_deps_list_change_con): Ditto.
(move_dep_link): Declare function.
(struct _dep_node): New type.
(dep_node_t): New typedef.
(DEP_NODE_BACK, DEP_NODE_DEP, DEP_NODE_FORW): New access macros.
(struct haifa_insn_data.back_deps): New field to hold backward
dependencies of the insn.
(struct haifa_insn_data.depend): Rename to forw_deps. Change its type
to deps_list_t.
(struct haifa_insn_data.resolved_deps): Rename to resolved_back_deps.
Change its type to deps_list_t.
(INSN_BACK_DEPS): New access macro to use instead of LOG_LINKS.
(INSN_DEPEND): Rename to INSN_FORW_DEPS.
(RESOLVED_DEPS): Rename to INSN_RESOLVED_BACK_DEPS.
(INSN_COST): Move to haifa-sched.c. Use insn_cost () instead.
(DEP_STATUS): Rename to DEP_LINK_STATUS. Fix typo in the comment.
(add_forw_dep, delete_back_forw_dep, insn_cost): Update declaration and
all callers.
(dep_cost): Declare.
* sched-deps.c (CHECK): New macro to (en/dis)able sanity checks.
(ds_to_dk, dk_to_ds): New functions.
(init_dep_1): New static function.
(init_dep): New function.
(copy_dep): New static function.
(dep_link_consistent_p, attach_dep_link, add_to_deps_list): New static
functions.
(detach_dep_link): New static function.
(move_dep_link): New function.
(dep_links_consistent_p, dump_dep_links): New static functions.
(debug_dep_links): New debugging function.
(deps_obstack, dl_obstack, dn_obstack): New static variables.
(alloc_deps_list, init_deps_list): New static functions.
(create_deps_list): New function.
(clear_deps_list): New static function.
(free_deps_list, delete_deps_list, deps_list_empty_p): New functions.
(deps_list_consistent_p, dump_deps_list): New static functions.
(debug_deps_list): New function.
(add_back_dep_to_deps_list, find_link_by_pro_in_deps_list): New
functions.
(find_link_by_con_in_deps_list, copy_deps_list_change_con): Ditto.
(maybe_add_or_update_back_dep_1, add_or_update_back_dep_1): Update to
use new scheduler dependencies lists.
(add_back_dep, delete_all_dependences, fixup_sched_groups): Ditto.
(sched_analyze): Ditto. Initialize dependencies lists.
(add_forw_dep, compute_forward_dependences): Update to use new
scheduler dependencies lists.
(init_dependency_caches): Init deps_obstack.
(free_dependency_caches): Free deps_obstack.
(adjust_add_sorted_back_dep, adjust_back_add_forw_dep): Update to use
new scheduler dependencies lists.
(delete_forw_dep, add_or_update_back_forw_dep): Ditto.
(add_back_forw_dep, delete_back_forw_dep): Ditto.
* sched-rgn.c (set_spec_fed, find_conditional_protection, is_pfree):
Update to use new scheduler dependencies lists.
(is_conditionally_protected, is_prisky, add_branch_dependences): Ditto.
(debug_dependencies): Ditto.
(schedule_region): Update comments.
* sched-ebb.c (earliest_block_with_similiar_load): Update to use new
scheduler dependencies lists.
(schedule_ebb): Update comments.
* rtl.def (DEPS_LIST): Remove.
* lists.c (unused_deps_list): Remove.
(free_list): Update assertions.
(alloc_DEPS_LIST, free_DEPS_LIST_list, free_DEPS_LIST_node): Remove.
(remove_free_DEPS_LIST_elem, copy_DEPS_LIST_list): Ditto.
* rtl.h (free_DEPS_LIST_list, alloc_DEPS_LIST): Remove declarations.
(remove_free_DEPS_LIST_elem, copy_DEPS_LIST_list): Ditto.
* haifa-sched.c (comments): Update.
(insn_cost1): Remove. Inline the code into insn_cost ().
(insn_cost): Update to use new scheduler dependencies lists. Move
processing of the dependency cost to dep_cost ().
(dep_cost): New function. Use it instead of insn_cost () when
evaluating cost of the dependency. Use compatible interface to
interact with the target.
(priority): Update to use new scheduler dependencies lists.
(rank_for_schedule): Ditto. Optimize heuristic that prefers the insn
with greater number of insns that depend on the insn.
(schedule_insn): Update to use new scheduler dependencies lists. Add
code to free backward dependencies lists. Inline and optimize code
from resolve_dep () - see PR28071.
(ok_for_early_queue_removal): Update to use new scheduler dependencies
lists. Update call to targetm.sched.is_costly_dependence hook.
(fix_inter_tick, try_ready, fix_tick_ready): Update to use new
scheduler dependencies lists.
(resolve_dep): Remove. Move the logic to schedule_insn ().
(init_h_i_d): Initialize dependencies lists.
(process_insn_depend_be_in_spec): Rename to
process_insn_forw_deps_be_in_spec. Update to use new scheduler
dependencies lists.
(add_to_speculative_block, create_check_block_twin, fix_recovery_deps):
Update to use new scheduler dependencies lists.
(clear_priorities, calc_priorities, add_jump_dependencies): Ditto.
* ddg.c (create_ddg_dependence, create_ddg_dep_no_link): Update to use
new scheduler dependencies lists.
(build_intra_loop_deps): Ditto.
* target.h (struct _dep): Declare to use in
gcc_target.sched.is_costly_dependence.
(struct gcc_target.sched.adjust_cost): Fix typo.
(struct gcc_target.sched.is_costly_dependence): Change signature to use
single dep_t parameter instead of an equivalent triad.
(struct gcc_target.sched.adjust_cost_2): Remove.
* target-def.h (TARGET_SCHED_ADJUST_COST_2): Remove.
* reg-notes.def (DEP_TRUE, DEP_OUTPUT, DEP_ANTI): Update comments.
* doc/tm.texi (TARGET_SCHED_IS_COSTLY_DEPENDENCE): Update
documentation.
(TARGET_SCHED_ADJUST_COST_2): Remove documentation.
* doc/rtl.texi (LOG_LINKS): Remove part about instruction scheduler.
(REG_DEP_TRUE): Document.
* config/ia64/ia64.c (ia64_adjust_cost_2): Rename to ia64_adjust_cost.
Change signature to correspond to the targetm.sched.adjust_cost hook.
Update use in TARGET_SCHED_ADJUST_COST_2.
(TARGET_SCHED_ADJUST_COST_2): Rename to TARGET_SCHED_ADJUST_COST.
(ia64_dependencies_evaluation_hook, ia64_dfa_new_cycle): Update to use
new scheduler dependencies lists.
(ia64_gen_check): Ditto.
* config/mips/mips.c (vr4130_swap_insns_p): Update to use new scheduler
dependencies lists.
* config/rs6000/rs6000.c (rs6000_is_costly_dependence): Change
signature to correspond to the targetm.sched.is_costly_dependence hook.
(is_costly_group): Update to use new scheduler dependencies lists.
* config/spu/spu.c (spu_sched_adjust_cost): Use insn_cost () function
instead of INSN_COST () macro.
From-SVN: r121494
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2006-03-16 Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
Andrey Belevantsev <abel@ispras.ru>
* ddg.c (build_intra_loop_deps): Adjust add_forward_dependence call.
* lists.c (unused_deps_list): New variable.
(free_list): Add assertions to verify the proper distinguishing
between INSN_LISTs and DEPS_LISTs.
(find_list_elem, remove_list_elem, remove_list_node): New static
functions.
(alloc_DEPS_LIST, free_DEPS_LIST, free_DEPS_LIST_node,
remove_free_INSN_LIST_elem, remove_free_DEPS_LIST_elem,
remove_free_INSN_LIST_node, remove_free_DEPS_LIST_node): New functions.
(alloc_INSN_LIST): Assert that the list we're working on is indeed
an INSN_LIST.
(free_INSN_LIST_node): Likewise.
* modulo-sched.c (current_sched_info): Initialize flags field.
* reg-notes.def: Exchange DEP_ANTI and DEP_OUTPUT.
* rtl.def (DEPS_LIST): Define.
* rtl.h: Declare new functions from lists.c.
* sched-deps.c (spec_dependency_cache): New static variable.
(maybe_add_or_update_back_dep_1, add_back_dep): New static functions.
(add_dependence): Change return type to void. Move the logic to ...
(add_or_update_back_dep_1): ... here. Handle speculative dependencies.
(delete_all_dependences): Add comment about forward_dependency_cache.
Handle spec_dependency_cache. Handle DEPS_LISTs.
(fixup_sched_groups): Clarify the change of priority of output
and anti dependencies.
(sched_analyze_2): Adjust add_dependence calls to create data
speculative dependence.
(add_forward_dependence): Renamed to add_forw_dep, change prototype.
Adjust all callers. Handle DEPS_LISTS.
(compute_forward_dependences): Use add_forw_dep. Sort LOG_LINKs in
presence of speculation.
(init_dependency_caches, free_dependency_caches):
Handle spec_dependency_cache.
(adjust_add_sorted_back_dep, adjust_back_add_forw_dep, delete_forw_dep,
estimate_dep_weak, get_dep_weak, ds_merge, check_dep_status):
New static functions.
(add_or_update_back_dep, add_or_update_back_forw_dep,
add_back_forw_dep, delete_back_forw_dep): New functions.
* sched-int.h (ds_t, dw_t): New typedefs.
(struct sched_info): Add new field flags.
(struct haifa_insn_data): Add new bitfield has_internal_dep.
Prototype new sched-deps.c functions.
(HAS_INTERNAL_DEP, DEP_STATUS): New access macros.
(BITS_PER_DEP_STATUS, BITS_PER_DEP_WEAK, DEP_WEAK_MASK, MAX_DEP_WEAK,
MIN_DEP_WEAK, NO_DEP_WEAK, UNCERTAIN_DEP_WEAK, BEGIN_DATA, BE_IN_DATA,
BEGIN_CONTROL, BE_IN_CONTROL, BEGIN_SPEC, DATA_SPEC, CONTROL_SPEC,
SPECULATIVE, BE_IN_SPEC, FIRST_SPEC_TYPE, LAST_SPEC_TYPE,
SPEC_TYPE_SHIFT, DEP_TRUE, DEP_OUTPUT, DEP_ANTI, DEP_TYPES, HARD_DEP):
New constants.
(enum SPEC_TYPES_OFFSETS, enum DEPS_ADJUST_RESULT, enum SCHED_FLAGS):
New enums.
* sched-rgn.c (current_sched_info): Initialize flags field.
(schedule_insns): Initialize current_sched_info before the sched_init
call.
* sched-ebb.c (current_sched_info): Initialize flags field.
(add_deps_for_risky_insns): Use control_flow_insn_p instead of JUMP_P.
Call add_or_update_back_dep instead of add_dependence.
Create control speculative dependencies.
(schedule_insns): Initialize current_sched_info before the sched_init
call.
Co-Authored-By: Andrey Belevantsev <abel@ispras.ru>
From-SVN: r112125
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From-SVN: r101317
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setjmpless_size.
* explow.c (allocate_dynamic_stack_space SETJMP_VIA_SAVE_AREA):
Kill setjmpless_size. current_function_calls_setjmp is completely
computed when we are called, so just use the optimized size value
instead of using REG_SAVE_AREA notes.
(optimize_save_area_alloca): Delete....
* rtl.h (optimize_save_area_alloca): Likewise...
* passes.c (rest_of_compilation): and don't call it any more.
* reg-notes.def (SAVE_AREA): Delete.
From-SVN: r98861
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* cfgloop.h, cfgloopanal.c, cfgloopmanip.c, conflict.c,
loop-init.c, loop-unroll.c, print-tree.c, reg-notes.def,
config/m68k/m68k.c, config/mips/mips.h,
config/rs6000/rs6000-protos.h, doc/contrib.texi,
doc/include/gcc-common.texi: Update copyright.
From-SVN: r95781
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* calls.c (emit_call_1): Don't use REG_ALWAYS_RETURN.
(emit_library_call_value_1): Don't use LCT_ALWAYS_RETURN and
REG_ALWAYS_RETURN.
* cfgrtl.c (need_fake_edge_p): Likewise.
* combine.c (distribute_notes): Likewise.
* emit-rtl.c (try_split): Likewise.
* recog.c (peephole2_opimize): Likewise.
* reg-notes.def (ALWAYS_RETURN): Remove.
* rtl.h (LCT_ALWAYS_RETURN): Remove.
* tree-cfg.c (need_fake_edge_p): Don't use ECF_ALWAYS_RETURN.
* tree.h (ECF_ALWAYS_RETURN): Remove.
From-SVN: r95690
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* reg-notes.def (REG_DEP_TRUE): New entry, place first so it
gets value 0.
* print-rtl.c (print_rtx): Print the name of a REG_NOTE even
if it has value 0.
From-SVN: r87821
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* reg-notes.def (REG_NOTE): In comment, change DEF_INSN_NOTE to
DEF_REG_NOTE.
From-SVN: r86465
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* insn-notes.def, reg-notes.def: New files.
* rtl.h: Use them to define enum insn_note and enum reg_note.
* rtl.c: Use them to define note_insn_name and reg_note_name.
* modulo-sched.c, sched-rgn.c, final.c: NOTE_DISABLE_SCHED_OF_BLOCK
renamed to NOTE_INSN_DISABLE_SCHED_OF_BLOCK.
From-SVN: r86212
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