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841 Commits

Author SHA1 Message Date
Richard Henderson
65030b761e combine.c (combine_instructions): Don't use reg_equal/equiv results if the mode doesn't match. 
* combine.c (combine_instructions): Don't use reg_equal/equiv
        results if the mode doesn't match.

From-SVN: r102679
 2005-08-02 21:32:00 -07:00
J"orn Rennecke
45002e594c re PR rtl-optimization/22258 (combine causes spill failure on return value register) 
PR rtl-optimization/22258
	* combine.c (likely_spilled_retval_1, likely_spilled_retval_p):
	New functions.
	(try_combine): Use likely_spilled_retval_p.

From-SVN: r102279
 2005-07-22 12:55:42 +01:00
Ben Elliston
dfea6c85d8 bt-load.c (link_btr_uses): Fix uninitialised warnings. 
* bt-load.c (link_btr_uses): Fix uninitialised warnings.
	* cfganal.c (find_edge_index): Ditto.
	* combine.c (combine_instructions): Ditto.
	* ddg.c (create_scc): Ditto.
	(find_successors): Ditto.
	(find_predecessors): Ditto.
	(find_nodes_on_paths): Ditto.
	(longest_simple_path): Ditto.
	* flow.c (update_life_info): Ditto.
	(count_or_remove_death_notes): Ditto.
	(clear_log_links): Ditto.
	* modulo-sched.c (generate_reg_moves): Ditto.
	(find_max_asap): Ditto.
	(find_max_hv_min_mob): Ditto.
	(find_max_dv_min_mob): Ditto.
	* sbitmap.c (sbitmap_first_set_bit): Ditto.
	* sched-rgn.c (extract_edgelst): Ditto.
	* tree-into-ssa.c (prepare_names_to_update): Ditto.
	(dump_update_ssa): Ditto.
	(ssa_names_to_replace) Ditto.
	(switch_virtuals_to_full_rewrite): Ditto.
	(update_ssa): Ditto.
	* tree-vect-transform.c (vect_create_epilog_for_reduction): Ditto.

From-SVN: r102151
 2005-07-19 14:08:32 +10:00
Paolo Bonzini
ef3303124e Makefile.in: Adjust dependencies. 
2005-07-05  Paolo Bonzini  <bonzini@gnu.org>

	* Makefile.in: Adjust dependencies.
	* tree-pass.h: Add new passes and passes formerly in tree-optimize.c.
	* basic-block.h (duplicate_computed_gotos): Remove, it is now static.
	* alias.c (rest_of_handle_cfg, pass_cfg): New.
	* bb-reorder.c (duplicate_computed_gotos): Make it static.
	* cfgexpand.c (tree_expand_cfg): Add code formerly at the beginning of
	rest_of_compilation.

	* bb-reorder.c (gate_duplicate_computed_gotos,
	pass_duplicate_computed_gotos, gate_handle_reorder_blocks,
	rest_of_handle_reorder_blocks, pass_reorder_blocks,
	gate_handle_partition_blocks, rest_of_handle_partition_blocks,
	pass_partition_blocks): New.
	* bt-load.c (gate_handle_branch_target_load_optimize,
	rest_of_handle_branch_target_load_optimize,
	pass_branch_target_load_optimize): New.
	* cfgcleanup.c (rest_of_handle_jump, pass_jump, rest_of_handle_jump2,
	pass_jump2): New.
	* cfglayout.c (pass_insn_locators_initialize): New.
	* cfgrtl.c (pass_free_cfg): New.
	* combine.c (gate_handle_combine, rest_of_handle_combine,
	pass_combine): New.
	* cse.c (gate_handle_cse, rest_of_handle_cse, pass_cse,
	gate_handle_cse2, rest_of_handle_cse2, pass_cse2): New.
	* emit-rtl.c (pass_unshare_all_rtl, pass_remove_unnecessary_notes): New.
	* except.c (pass_set_nothrow_function_flags,
	pass_convert_to_eh_region_ranges, gate_handle_eh, rest_of_handle_eh,
	pass_rtl_eh): New.
	* final.c (pass_compute_alignments, rest_of_handle_final, pass_final,
	rest_of_handle_shorten_branches, pass_shorten_branches,
	rest_of_clean_state, pass_clean_state): New.
	* flow.c (pass_recompute_reg_usage, gate_remove_death_notes,
	rest_of_handle_remove_death_notes, pass_remove_death_notes,
	rest_of_handle_life, pass_life, rest_of_handle_flow2,
	pass_flow2): New.
	* function.c (pass_instantiate_virtual_regs, pass_init_function,
	rest_of_handle_check_leaf_regs, pass_leaf_regs): New.
	* gcse.c (gate_handle_jump_bypass, rest_of_handle_jump_bypass,
	pass_jump_bypass, gate_handle_gcse, rest_of_handle_gcse,
	pass_gcse): New.
	* global.c (rest_of_handle_global_alloc, pass_global_alloc): New.
	* ifcvt.c (gate_handle_if_conversion, rest_of_handle_if_conversion,
	pass_rtl_ifcvt, gate_handle_if_after_combine,
	rest_of_handle_if_after_combine, pass_if_after_combine,
	gate_handle_if_after_reload, rest_of_handle_if_after_reload,
	pass_if_after_reload): New.
	* integrate.c (pass_initial_value_sets): New.
	* jump.c (pass_cleanup_barriers, purge_line_number_notes,
	pass_purge_lineno_notes): New.
	* mode-switching.c (rest_of_handle_mode_switching,
	pass_mode_switching): New.
	* local-alloc.c (rest_of_handle_local_alloc, pass_local_alloc): New.
	* loop-init.c (gate_handle_loop2, rest_of_handle_loop2,
	pass_loop2): New.
	* loop.c (gate_handle_loop_optimize, rest_of_handle_loop_optimize,
	pass_loop_optimize): New.
	* modulo-sched.c (gate_handle_sms, rest_of_handle_sms,
	pass_sms): New.
	* postreload-gcse.c (gate_handle_gcse2, rest_of_handle_gcse2,
	pass_gcse2): New.
	* postreload.c (gate_handle_postreload, rest_of_handle_postreload,
	pass_postreload_cse): New.
	* profile.c (gate_handle_profiling, pass_profiling,
	rest_of_handle_branch_prob, pass_branch_prob): New.
	* recog.c (pass pass_split_for_shorten_branches, gate_do_final_split,
	pass_split_before_regstack, gate_handle_split_before_regstack,
	gate_handle_peephole2, rest_of_handle_peephole2, pass_peephole2,
	rest_of_handle_split_all_insns, pass_split_all_insns): New.
	* reg-stack.c (gate_handle_stack_regs, rest_of_handle_stack_regs,
	pass_stack_regs): New.
	* regmove.c (gate_handle_regmove, rest_of_handle_regmove, pass_regmove,
	gate_handle_stack_adjustments, rest_of_handle_stack_adjustments,
	pass_stack_adjustments): New.
	* regrename.c (gate_handle_regrename, rest_of_handle_regrename,
	pass_regrename): New.
	* reorg.c (gate_handle_delay_slots, rest_of_handle_delay_slots,
	pass_delay_slots, gate_handle_machine_reorg,
	rest_of_handle_machine_reorg, pass_machine_reorg): New.
	* rtl.h (extern void purge_line_number_notes): New.
	* sched-rgn.c (gate_handle_sched, rest_of_handle_sched,
	gate_handle_sched2, rest_of_handle_sched2, pass_sched,
	pass_sched2): New.
	* tracer.c (gate_handle_tracer, rest_of_handle_tracer,
	pass_tracer): New.
	* value-prof.c (gate_handle_value_profile_transformations,
	rest_of_handle_value_profile_transformations,
	pass_value_profile_transformations): New.
	* var-tracking.c (gate_handle_var_tracking,
	pass_variable_tracking): New.
	* web.c (gate_handle_web, rest_of_handle_web, pass_web): New.

	* passes.c (open_dump_file, close_dump_file, rest_of_handle_final,
	rest_of_handle_delay_slots, rest_of_handle_stack_regs,
	rest_of_handle_variable_tracking, rest_of_handle_machine_reorg,
	rest_of_handle_old_regalloc, rest_of_handle_regrename,
	rest_of_handle_reorder_blocks, rest_of_handle_partition_blocks,
	rest_of_handle_sms, rest_of_handle_sched, rest_of_handle_sched2,
	rest_of_handle_gcse2, rest_of_handle_regmove,
	rest_of_handle_tracer, rest_of_handle_if_conversion,
	rest_of_handle_if_after_combine, rest_of_handle_if_after_reload,
	rest_of_handle_web, rest_of_handle_branch_prob,
	rest_of_handle_value_profile_transformations, rest_of_handle_cfg,
	rest_of_handle_jump_bypass, rest_of_handle_combine,
	rest_of_handle_life, rest_of_handle_cse, rest_of_handle_cse2,
	rest_of_handle_gcse, rest_of_handle_loop_optimize,
	rest_of_handle_loop2, rest_of_handle_branch_target_load_optimize,
	rest_of_handle_mode_switching, rest_of_handle_jump,
	rest_of_handle_eh, rest_of_handle_stack_adjustments,
	rest_of_handle_flow2, rest_of_handle_jump2,
	rest_of_handle_peephole2, rest_of_handle_postreload,
	rest_of_handle_shorten_branches, rest_of_clean_state,
	rest_of_compilation): Remove.

	* cgraphunit.c (ipa_passes): Moved from tree-optimize.c.
	* passes.c (dump_flags, in_gimple_form, all_passes,
	all_ipa_passes, all_lowering_passes, register_one_dump_file,
	register_dump_files, next_pass_1, last_verified, execute_todo,
	execute_one_pass, execute_pass_list, execute_ipa_pass_list): Moved
	from tree-optimize.c.
	(init_optimization_passes): Moved from tree-optimize.c,
	adding the RTL optimizations.
	* tree-dump.h (dump_info_p, dump_flag): Moved from tree.h.
	* tree-optimize.c (dump_flags, in_gimple_form, all_passes,
	all_ipa_passes, all_lowering_passes, register_one_dump_file,
	register_dump_files, next_pass_1, last_verified, execute_todo,
	execute_one_pass, execute_pass_list, execute_ipa_pass_list,
	init_tree_optimization_passes, ipa_passes): Delete.
	* tree-pass.h (enum tree_dump_index): Moved from tree.h, removing
	the RTL dumps.
	(TDF_*, get_dump_file_name, dump_enabled_p, dump_initialized_p,
	dump_begin, dump_end, dump_node, dump_switch_p, dump_flag_name): Moved
	from tree.h.
	(ipa_passes): Remove.
	(all_passes, all_ipa_passes, all_lowering_passes): Now extern.
	* tree.h (enum tree_dump_index, TDF_*, get_dump_file_name,
	dump_enabled_p, dump_initialized_p, dump_begin, dump_end, dump_node,
	dump_switch_p, dump_flag_name): Moved to tree-pass.h.
	(dump_info_p, dump_flag): Moved to tree-dump.h.

	* Makefile.in: Adjust dependencies for tree-pretty-print.c,
	cgraph.c, opts.c.
	* passes.c (finish_optimization_passes): Use dump_begin
	and dump_end, TDI_end.
	(gate_rest_of_compilation): New.
	(pass_rest_of_compilation): Use it.
	(gate_postreload, pass_postreload): New.
	* toplev.c (general_init): Rename init_tree_optimization_passes.
	* toplev.h (init_tree_optimization_passes): Rename to
	init_optimizations_passes.
	* tree-dump.c (dump_flag): Make static.
	(dump_files): Remove RTL dumps.
	* tree-optimize.c (pass_all_optimizations, pass_early_local_passes,
	pass_cleanup_cfg, pass_free_cfg_annotations,
	pass_cleanup_cfg_post_optimizing, pass_free_datastructures,
	pass_init_datastructures, pass_fixup_cfg): Make non-static.
	* tree-pretty-print.c: Include tree-pass.h.
	* cgraph.c: Include tree-dump.h.

cp:
2005-07-05  Paolo Bonzini  <bonzini@gnu.org>

	* Makefile.in (class.o, decl2.o): Adjust dependencies.
	* class.c: Include tree-dump.h.
	* decl2.c: Include tree-dump.h.

java:
2005-07-05  Paolo Bonzini  <bonzini@gnu.org>

	* Makefile.in (parse.o): Adjust dependencies.
	* parse.y: Include tree-dump.h.

From-SVN: r101627
 2005-07-05 16:20:53 +00:00
Joseph Myers
ab532386bd bb-reorder.c, [...]: Avoid "." or "\n" at end of diagnostics and capital letters at start of diagnostics. 
* bb-reorder.c, c-pch.c, c-pragma.c, c.opt, cfghooks.c, cfgloop.c,
	cfgrtl.c, cgraphunit.c, config/c4x/c4x.c, config/cris/cris.c,
	config/frv/frv.c, config/host-darwin.c, config/iq2000/iq2000.c,
	config/lynx.h, config/m68k/m68k.c, config/pa/pa.c, config/sh/sh.h,
	config/stormy16/stormy16.c, config/v850/v850.c,
	config/vax/netbsd-elf.h, coverage.c, dwarf2out.c, emit-rtl.c,
	except.c, gcc.c, tree-cfg.c, tree-eh.c, tree-ssa.c, xcoffout.c:
	Avoid "." or "\n" at end of diagnostics and capital letters at
	start of diagnostics.
	* combine.c, cse.c: Don't translate dump file output.
	* toplev.c (print_version): Only translate output if going to
	stderr.

From-SVN: r101561
 2005-07-03 22:08:11 +01:00
Kelley Cook
366ccddb2b Update FSF address. 
From-SVN: r101317
 2005-06-25 02:02:01 +00:00
Fariborz Jahanian
8c98e9d03d re PR target/22077 (vec_all_eq does not produce good result) 
PR 22077.
Oked by Roger Sayle.

From-SVN: r101211
 2005-06-20 17:59:35 +00:00
Andreas Krebbel
966b148a49 combine.c (make_compound_operation): Use simplify_subreg. 
2005-06-19  Andreas Krebbel  <krebbel1@de.ibm.com>

	* combine.c (make_compound_operation): Use simplify_subreg.  Delete
	a optimization already done by simplify_subreg.

From-SVN: r101183
 2005-06-19 13:29:45 +00:00
Jan Hubicka
5e2d947ce8 basic-block.h (rtl_bb_info): Break out head_, end_, global_live_at_start, global_live_at_end from ... 
* basic-block.h (rtl_bb_info): Break out head_, end_,
	global_live_at_start, global_live_at_end from ...
	(basic_block_def): ... here; update all references
	(BB_RTL): New flag.
	(init_rtl_bb_info): Declare.
	* cfgexpand.c (expand_gimple_basic_block): Init bb info, set BB_RTL
	flag.
	* cfgrtl.c: Include ggc.h
	(create_basic_block_structure): Init bb info.
	(rtl_verify_flow_info_1): Check BB_RTL flag and rtl_bb_info pointer.
	(init_rtl_bb_info): New function.
	(rtl_merge_block, cfglayout_merge_block): Copy global_live_at_end here.
	* cfghooks.c (merge_block): Do not copy global_live_at_end here.
	* cfg.c (clear_bb_flags): Skip BB_RTL flag.
	(dump_flow_info): Gueard global_live_* dumping.

From-SVN: r101082
 2005-06-16 10:33:40 +00:00
Kazu Hirata
b6e7e9af04 sbitmap.h (sbitmap_iterator, [...]): New. 
* sbitmap.h (sbitmap_iterator, sbitmap_iter_init,
	sbitmap_iter_cond, sbitmap_iter_next): New.
	* bt-load.c, cfganal.c, combine.c, ddg.c, flow.c,
	modulo-sched.c, sbitmap.c, sched-rgn.c, tree-into-ssa.c,
	tree-outof-ssa.c, tree-ssa-alias.c, tree-ssa-live.c: Update
	uses of EXECUTE_IF_SET_IN_SBITMAP to the new style.

From-SVN: r100709
 2005-06-07 14:30:25 +00:00
Jakub Jelinek
c8b622ff2d combine.c (try_combine): Use hard_regno_nregs array instead of HARD_REGNO_NREGS macro. 
* combine.c (try_combine): Use hard_regno_nregs array instead of
	HARD_REGNO_NREGS macro.
	* config/rs6000/rs6000.c (rs6000_split_multireg_move,
	rs6000_register_move_cost, rs6000_memory_move_cost): Likewise.
	* config/ia64/ia64.c (mark_reg_gr_used_mask): Likewise.

From-SVN: r100673
 2005-06-06 21:22:19 +02:00
Jakub Jelinek
125886c749 re PR rtl-optimization/21239 (Illegal elimination of SSE2 load/store using xmm intrinsics) 
* config/i386/i386.c (ix86_expand_vector_set): Fix setting 3rd and 4th
	item in V4SF mode.

	PR rtl-optimization/21239
	* combine.c (combine_simplify_rtx) <case VEC_SELECT>: Fix a typo.

	* gcc.dg/i386-sse-11.c: New test.

From-SVN: r99186
 2005-05-04 00:16:01 +02:00
Nathan Sidwell
535a42b116 builtins.c (gimplify_va_arg_expr): Reword comments to avoid 'abort'. 
* builtins.c (gimplify_va_arg_expr): Reword comments to avoid
	'abort'. Use gcc_assert and gcc_unreachable as appropriate.
	* c-format.c (get_constant, decode_format_attr, get_flag_spec,
	find_char_info_specifier_index,
	find_length_info_modifier_index): Likewise.
	* c-typeck.c (composite_type, pop_init_level): Likewise.
	* combine.c (cant_combine_insn_p, try_combine): Likewise.
	* cse.c (cse_insn): Likewise
	* dominance.c (calc_dfs_tree): Likewise
	dwarf2out.c (loc_descriptor_from_tree_1,
	add_abstract_origin_attribute, force_decl_die,
	force_type_die): Likewise
	emit-rtl.c (operand_subword_force): Likewise
	explow.c (hard_function_value): Likewise
	expmed.c (store_bit_field, expand_divmod,
	emit_store_flag_force): Likewise
	expr.c (emit_move_multi_word, store_expr,
	expand_expr_real_1): Likewise
	final.c (this_is_asm_operands, shorten_branches, final_scan_insn,
	output_operand): Likewise
	flow.c (recompute_reg_usage): Likewise
	* function.c (assign_stack_temp_for_type, assign_temp,
	handle_epilogue_set): Likewise
	* genextract.c (main): Likewise
	* gimplify.c (mostly_copy_tree_r, gimplify_return_expr,
	gimplify_modify_expr_rhs, gimplify_expr): Likewise
	* haifa-sched.c (ready_lastpos, ready_remove_first, ready_element,
	ready_remove, rm_line_notes, rm_other_notes,
	schedule_block): Likewise
	mips-tfile.c (copy_object, out_of_bounds): Likewise

From-SVN: r98567
 2005-04-22 16:14:55 +00:00
Kazu Hirata
25cd19de2f cfgrtl.c (purge_all_dead_edge): Remove an unused argument. 
* cfgrtl.c (purge_all_dead_edge): Remove an unused argument.
	* basic-block.h: Update the prototype for
	purge_all_dead_edges.
	* cfgexpand.c (tree_expand_cfg): Update a call to
	purge_all_dead_edges.
	* combine.c (combine_instructions): Likewise.
	* passes.c (rest_of_handle_old_regalloc, rest_of_handle_cse,
	rest_of_handle_cse2, rest_of_handle_gcse,
	rest_of_handle_postreload): likewise.

From-SVN: r98168
 2005-04-15 03:16:20 +00:00
Richard Sandiford
ecf9c079e2 combine.c (combine_simplify_rtx): Remove a transformation that relies on an invalid assumption about rtl... 
* combine.c (combine_simplify_rtx): Remove a transformation that
	relies on an invalid assumption about rtl sign-extension semantics.

From-SVN: r97941
 2005-04-10 06:27:12 +00:00
Paolo Bonzini
bf66727567 combine.c (RTL_HOOKS_GEN_LOWPART_NO_EMIT): Use gen_lowpart_for_combine. 
2004-04-05  Paolo Bonzini  <bonzini@gnu.org>

	* combine.c (RTL_HOOKS_GEN_LOWPART_NO_EMIT): Use
	gen_lowpart_for_combine.
	* cse.c (gen_lowpart_if_possible): Move...
	* rtlhooks.c (gen_lowpart_if_possible): ... here.  Also try
	gen_lowpart_SUBREG.
	(gen_lowpart_no_emit_general): Use it.

From-SVN: r97633
 2005-04-05 14:50:35 +00:00
Hans-Peter Nilsson
17c9bcdd28 re PR rtl-optimization/20527 (Mishandling of postincrement causes bzip2 miscompilation.) 
PR rtl-optimization/20527
	* combine.c (can_combine_p) [AUTO_INC_DEC]: When INSN has an
	REG_INC note, test that the register also isn't mentioned in PRED
	or SUCC.

From-SVN: r96853
 2005-03-22 03:48:44 +00:00
Paolo Bonzini
14f02e7315 combine.c (combine_simplify_rtx, [...]): Adjust calls to reverse_comparison. 
2005-03-21  Paolo Bonzini  <bonzini@gnu.org>

	* combine.c (combine_simplify_rtx, simplify_if_then_else,
	simplify_logical, if_then_else_cond, known_cond,
	simplify_comparison): Adjust calls to reverse_comparison.
	Don't use combine_reversed_comparison_code).
	(combine_reversed_comparison_code): Remove.
	(reversed_comparison): Using reversed_comparison_code, move it...
	* jump.c (reversed_comparison): ... here.
	* rtl.h (reversed_comparison): Add prototype.

From-SVN: r96801
 2005-03-21 14:38:01 +00:00
Bernd Schmidt
1ad93fbfe9 combine.c (try_combine): When changing the mode of a hard reg, make sure that doing so is valid. 
* combine.c (try_combine): When changing the mode of a hard reg, make
	sure that doing so is valid.

From-SVN: r96730
 2005-03-19 15:01:45 +00:00
Paolo Bonzini
bcb34aa3dd combine.c (gen_binary): Remove. 
2005-03-01  Paolo Bonzini  <bonzini@gnu.org>

	* combine.c (gen_binary): Remove.
	(known_cond, simplify_shift_const, find_split_point,
	combine_simplify_rtx, simplify_if_then_else, simplify_set,
	simplify_logical, expand_field_assignment, extract_left_shift,
	force_to_mode, if_then_else_cond, apply_distributive_law,
	simplify_and_const_int, simplify_shift_const, gen_lowpart_for_combine,
	simplify_comparison, reversed_comparison): Replace with
	simplify_gen_binary, simplify_gen_relational or
	distribute_and_simplify_rtx.
	(distribute_and_simplify_rtx): New function.

From-SVN: r96681
 2005-03-18 13:52:33 +00:00
J"orn Rennecke
9b12dc4f93 re PR rtl-optimization/20291 (combine throws away clobbers before trying to split) 
PR rtl-optimization/20291
	* combine.c (try_combine): If splitting fails, re-try with
	original combined pattern, i.e. before clobber stripping.

From-SVN: r96476
 2005-03-15 12:39:01 +00:00
Jakub Jelinek
985f2d8fa3 re PR target/20322 (Miscompilation of libcpp/expr.c at -O2+) 
PR target/20322
	* combine.c (try_combine): If recog_for_combine added CLOBBERs
	to NEWI2PAT, fail to combine if they are used by NEWPAT.

	* gcc.dg/20050307-1.c: New test.

From-SVN: r96260
 2005-03-10 22:26:12 +01:00
Kazu Hirata
6c6cfbfd52 c-common.c, [...]: Fix comment formatting. 
* c-common.c, c-opts.c, combine.c, cse.c, dojump.c,
	gimplify.c, tree-dfa.c, tree-ssa-loop-ivopts.c,
	tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa-sink.c,
	tree-vect-analyze.c, tree.def, tree.h: Fix comment formatting.

From-SVN: r96104
 2005-03-08 13:57:01 +00:00
Kazu Hirata
bb80db7b6d combine.c (simplify_and_const_int): Use gen_int_mode instead of GEN_INT (trunc_int_for_mode (...)). 
* combine.c (simplify_and_const_int): Use gen_int_mode instead
	of GEN_INT (trunc_int_for_mode (...)).
	* loop-iv.c (iv_number_of_iterations): Likewise.
	* postreload.c (reload_cse_move2add): Likewise.
	* simplify-rtx.c (simplify_const_unary_operation,
	simplify_const_binary_operation): Likewise.
	* stor-layout.c (get_mode_bounds): Likewise.

From-SVN: r95935
 2005-03-05 17:25:33 +00:00
Kazu Hirata
321cf1f25e calls.c (emit_call_1): Don't use REG_ALWAYS_RETURN. 
* 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
 2005-02-28 18:18:26 +00:00
Kazu Hirata
647eea9dd8 c-tree.h, [...]: Fix comment typos. 
* c-tree.h, combine.c, expmed.c, flow.c, libgcc2.c,
	simplify-rtx.c, tree-ssa-live.h: Fix comment typos.  Follow
	spelling conventions.

From-SVN: r94939
 2005-02-12 15:17:56 +00:00
Alexandre Oliva
aa2d0bc31c combine.c (simplify_comparison, [...]): Do not drop the extend if we'd have to add a paradoxical subreg later. 
gcc/ChangeLog:
* combine.c (simplify_comparison, case SIGN_EXTEND, ZERO_EXTEND):
Do not drop the extend if we'd have to add a paradoxical subreg
later.  Include optabs.h and insn-codes.h.
* Makefile.in (combine.o): Depend on $(OPTABS_H).
gcc/testsuite/ChangeLog:
* gcc.c-torture/execute/20050203-1.c: New.

From-SVN: r94655
 2005-02-03 09:09:42 +00:00
Richard Henderson
eb2ab51138 combine.c (make_field_assignment): Fix argument order to gen_int_mode. 
* combine.c (make_field_assignment): Fix argument order
        to gen_int_mode.

From-SVN: r94420
 2005-01-29 16:27:01 -08:00
Richard Henderson
55e79aef81 re PR middle-end/18008 (Duplicate mask on bitfield insertion) 
PR middle-end/18008
        * combine.c (make_field_assignment): Simplify store to zero_extract
        from a source with an overlapping mask.

From-SVN: r94282
 2005-01-26 12:29:25 -08:00
Roger Sayle
b975043470 combine.c (simplify_logical): Only simplify logical expressions of the form ior(and(x,y),z) by the inverse... 
* combine.c (simplify_logical): Only simplify logical expressions
	of the form ior(and(x,y),z) by the inverse distributive law if the
	result is cheaper than the original.

Co-Authored-By: Eric Botcazou <ebotcazou@libertysurf.fr>

From-SVN: r94114
 2005-01-23 15:43:56 +00:00
Hans-Peter Nilsson
3eacd71fc1 re PR target/18701 (mmix-knuth-mmixware gcc.c-torture/execute failures: 20010224-1.c, 20020216-1.c, 20040218-1.c, 20040709-2.c) 
PR target/18701
	* combine.c (combine_simplify_rtx): Revert change of 2004-12-31.

From-SVN: r94005
 2005-01-21 02:14:25 +00:00
Jakub Jelinek
49c3b9a846 re PR rtl-optimization/15139 (cc1 uses excessive amounts of memory compiling small routine) 
PR rtl-optimization/15139
	* combine.c: Include params.h.
	(count_rtxs): New function.
	(record_value_for_reg): If replace_rtx would replace at least
	2 occurrences of REG in VALUE and TEM is really large, replace REG with
	(clobber (const_int 0)) instead of TEM.
	* params.def (PARAM_MAX_LAST_VALUE_RTL): New.
	* params.h (MAX_LAST_VALUE_RTL): New.
	* Makefile.in (combine.o): Depend on $(PARAMS_H).
	* doc/invoke.texi (--param max-last-value-rtl=N): Document.

	* gcc.dg/20050111-2.c: New test.

From-SVN: r93892
 2005-01-19 10:31:16 +01:00
Kazu Hirata
ad616de14c basic-block.h, [...]: Update copyright. 
* basic-block.h, c-common.c, c-cppbuiltin.c, c-lang.c,
	c-tree.h, cfgbuild.c, cgraph.c, cgraph.h, collect2.c,
	combine.c, config.gcc, coverage.h, cse.c, cselib.c,
	defaults.h, df.c, dwarf2asm.c, dwarf2out.c, explow.c, expr.c,
	flow.c, fold-const.c, gcse.c, ggc-page.c, gimple-low.c,
	gimplify.c, ifcvt.c, langhooks-def.h, lcm.c, optabs.h,
	output.h, postreload-gcse.c, postreload.c, recog.c,
	resource.c, rtl.def, rtlanal.c, sched-deps.c, sched-rgn.c,
	targhooks.h, toplev.c, tree-data-ref.c, tree-eh.c,
	tree-flow.h, tree-loop-linear.c, tree-mudflap.h, tree-nrv.c,
	tree-optimize.c, tree-outof-ssa.c, tree-pass.h,
	tree-scalar-evolution.c, tree-ssa-copy.c, tree-ssa-dce.c,
	tree-ssa-dse.c, tree-ssa-loop-ivopts.c, tree-ssa-operands.c,
	tree-ssa-pre.c, tree-ssa.c, tree-vectorizer.c, tree.def,
	unwind-dw2-fde-darwin.c, var-tracking.c: Update copyright.

From-SVN: r93827
 2005-01-18 11:36:31 +00:00
Eric Botcazou
f917ae9680 re PR rtl-optimization/19296 (Range check on short miscompiled at -O) 
PR rtl-optimization/19296
	* combine.c (simplify_comparison): Rewrite the condition under
	which a non-paradoxical SUBREG of a PLUS can be lifted when
	compared against a constant.

From-SVN: r93818
 2005-01-18 08:26:21 +00:00
Steven Bosscher
46d096a3c7 combine.c (expand_compound_operation): Add comment that we fall through after case. 
* combine.c (expand_compound_operation)  <ZERO_EXTRACT>: Add
	comment that we fall through after case.
	(mark_used_regs_combine): Don't expect a SIGN_EXTRACT in a SET_DEST.
	(distribute_links): Likewise.
	* cse.c (cse_insn): Likewise.
	* cselib.c (cselib_invalidate_mem): Likewise.
	* df.c: Update comments at the top of the file.
	(read_modify_subreg_p): Update comments here too.
	(df_def_record_1): Don't expect a SIGN_EXTRACT in a SET_DEST.
	* flow.c (mark_set_1): Likewise.
	(mark_used_regs): Likewise.
	* gcse.c (mems_conflict_for_gcse_p): Likewise.
	(canon_list_insert): Likewise.
	(mark_set): Likewise.
	(try_replace_reg): Likewise.
	(store_killed_in_insn): Likewise.
	* loop.c (count_one_set): Likewise.
	(basic_induction_var): Likewise.
	* postreload-gcse.c (find_mem_conflicts): Likewise.
	* postreload.c (reload_combine_note_store): Likewise.
	(move2add_note_store): Likewise.
	* reload.c (find_equiv_reg): Likewise.
	(mark_referenced_resources): Likewise.
	* rtlanal.c (set_noop_p): Likewise.
	(note_stores): Likewise.
	(note_uses): Likewise.
	* sched-deps.c (sched_analyze_1): Likewise.
	* sched-rgn.c (check_live_1): Likewise.
	(update_live_1): Likewise.
	* config/i860/i860.c: Likewise.

	* rtl.dec (SIGN_EXTRACT): Document that this cannot appear as
	an lvalue.
	(ZERO_EXTRACT): Mention that this one can be an lvalue.

	* doc/rtl.texi: Update documentation for bit-fields and SET.

From-SVN: r92974
 2005-01-05 23:19:23 +00:00
Hans-Peter Nilsson
bf08edc139 re PR target/18701 (mmix-knuth-mmixware gcc.c-torture/execute failures: 20010224-1.c, 20020216-1.c, 20040218-1.c, 20040709-2.c) 
PR target/18701
	* combine.c (combine_simplify_rtx): Do not allow paradoxical
	subregs of MEM.

From-SVN: r92762
 2004-12-31 16:28:34 +00:00
Hans-Peter Nilsson
32f2ce0299 re PR target/18701 (mmix-knuth-mmixware gcc.c-torture/execute failures: 20010224-1.c, 20020216-1.c, 20040218-1.c, 20040709-2.c) 
PR target/18701
	* combine.c (gen_lowpart_for_combine): When stripping SUBREG of
	MEM, adjust imode and isize.

From-SVN: r92760
 2004-12-31 16:24:48 +00:00
Ian Lance Taylor
6bd26f0bee combine.c (combine_validate_cost): Consider cost of undobuf.other_insn rather than always allowing the... 
* combine.c (combine_validate_cost): Consider cost of
	undobuf.other_insn rather than always allowing the recombination
	if it is set.

From-SVN: r92173
 2004-12-15 01:02:55 +00:00
Jakub Jelinek
b78b8bd83e re PR rtl-optimization/17825 (ICE in reg_bitfield_target_p) 
PR rtl-optimization/17825
	* combine.c (subst): Ignore STRICT_LOW_PART no matter if REG_P (new)
	or not.

	* gcc.c-torture/compile/20041119-1.c: New test.

From-SVN: r91369
 2004-11-27 10:39:00 +01:00
Richard Henderson
7a32a925c5 combine.c (gen_lowpart_for_combine): Factor out mode of x as well as mode sizes into local temporaries. 
* combine.c (gen_lowpart_for_combine): Factor out mode of x as well
        as mode sizes into local temporaries.  Unify failure path.

From-SVN: r91118
 2004-11-23 15:27:23 -08:00
Kazu Hirata
471854f82a alias.c, [...]: Fix comment formatting. 
* alias.c, basic-block.h, cgraphunit.c, combine.c, domwalk.h,
	final.c, gengtype.c, genpreds.c, ggc-page.c, insn-notes.def,
	lambda-code.c, loop-unroll.c, modulo-sched.c, pointer-set.c,
	pretty-print.c, ra-colorize.c, sbitmap.c, tree-complex.c,
	tree-data-ref.c, tree-dfa.c, tree-inline.c, tree-into-ssa.c,
	tree-scalar-evolution.c, tree-ssa-dom.c,
	tree-ssa-loop-manip.c, tree-ssa-loop-niter.c,
	tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa-threadupdate.c,
	tree-vectorizer.c, vec.h: Fix comment formatting.

From-SVN: r89453
 2004-10-22 17:05:11 +00:00
Pat Haugen
b757b9f8b2 simplify-rtx.c (mode_signbit_p): Externalize function... 
2004-10-18  Pat Haugen  <pthaugen@us.ibm.com>

        * simplify-rtx.c (mode_signbit_p): Externalize function...
        * rtl.h (mode_signbit_p): ... to here.
        * combine.c (simplify_shift_const): Recognize PLUS signbit as
        canonical form of XOR signbit and move to outer op.

From-SVN: r89235
 2004-10-18 14:46:06 -04:00
Roger Sayle
7d103eb5d4 combine.c (force_to_mode): Only convert the expression (AND (NE FOO 0) CONST) into (AND FOO CONST) if... 
* combine.c (force_to_mode) <NE_EXPR>: Only convert the expression
	(AND (NE FOO 0) CONST) into (AND FOO CONST) if FOO has the same
	machine mode as the result.

From-SVN: r88369
 2004-09-30 23:44:30 +00:00
Ulrich Weigand
2f39b6caf6 cse.c (cse_insn): Avoid creating direct non-local jumps. 
* cse.c (cse_insn): Avoid creating direct non-local jumps.
	* combine.c (can_combine_p): Likewise.
	* local-alloc. (update_equiv_regs): Likewise.

From-SVN: r88258
 2004-09-28 23:29:02 +00:00
Roger Sayle
5c8c573a86 re PR rtl-optimization/17151 (x >> (y % WORDSIZE) not optimized) 
PR middle-end/17151
	* combine.c (force_to_mode): Remove dubious early return test that
	inhibits further optimization.

From-SVN: r88129
 2004-09-26 14:55:37 +00:00
Richard Henderson
41bf2a8b17 re PR middle-end/17503 (quadratic behaviour in invalid_mode_change_p) 
PR rtl-opt/17503
        * regclass.c (subregs_of_mode): Turn into an htab.  Make static.
        (som_hash, som_eq): New.
        (init_subregs_of_mode, record_subregs_of_mode): New.
        (cannot_change_mode_set_regs): Rewrite for htab implementation.
        (invalid_mode_change_p): Likewise.
        * combine.c (gen_lowpart_for_combine): Use record_subregs_of_mode.
        * flow.c (mark_used_regs): Likewise.
        (life_analysis): Use init_subregs_of_mode.
        * regs.h (subregs_of_mode): Remove.
        * rtl.h (init_subregs_of_mode, record_subregs_of_mode): Declare.

From-SVN: r88067
 2004-09-24 12:47:05 -07:00
Ulrich Weigand
0b21d1dcf9 combine.c (try_combine): When swapping i2 and i3... 
* combine.c (try_combine): When swapping i2 and i3, newi2pat may be
	a PARALLEL instead of a SET due to added clobbers.

From-SVN: r87255
 2004-09-09 21:57:50 +00:00
Nathan Sidwell
341c100fc5 cfganal.c (flow_depth_first_order_compute, [...]): Use gcc_assert or gcc_unreachable. 
* cfganal.c (flow_depth_first_order_compute, dfs_enumerate_from,
	cfgbuild.c, inside_basic_block_p, control_flow_insn_p,
	make_label_edge, make_edges, find_basic_blocks_1): Use gcc_assert
	or gcc_unreachable.
	* cfg.c (clear_edges, initialize_bb_rbi, compact_blocks,
	remove_edge, alloc_aux_for_blocks, free_aux_for_blocks,
	alloc_aux_for_edges, free_aux_for_edges): Likewise.
	* cfgcleanup.c (try_forward_edges,
	merge_blocks_move_predecessor_nojumps,
	merge_blocks_move_successor_nojumps): Likewise.
	* cfgexpand.c (expand_gimple_cond_expr,
	expand_gimple_tailcall): Likewise.
	* cfghooks.c (duplicate_block): Likewise.
	* cfglayout.c (record_effective_endpoints,
	insn_locators_initialize, change_scope, fixup_reorder_chain,
	verify_insn_chain, fixup_fallthru_exit_predecessor,
	duplicate_insn_chain, cfg_layout_finalize): Likewise.
	* cfgloopanal.c (check_irred): Likewise.
	* cfgloop.c (superloop_at_depth, flow_loops_free,
	flow_loop_entry_edges_find, flow_loops_find,
	flow_loop_outside_edge_p, get_loop_body,
	get_loop_body_in_dom_order, get_loop_body_in_bfs_order,
	get_loop_exit_edges, num_loop_branches, cancel_loop,
	verify_loop_structure): Likewise.
	cfgloopmanip.c (find_path, remove_path, loop_delete_branch_edge,
	duplicate_loop_to_header_edge, create_preheader,
	create_loop_notes): Likewise.
	* cfgrtl.c (delete_insn, try_redirect_by_replacing_jump,
	edirect_branch_edge, force_nonfallthru_and_redirect,
	rtl_split_edge, insert_insn_on_edge, commit_one_edge_insertion,
	commit_edge_insertions, commit_edge_insertions_watch_calls,
	purge_dead_edges, cfg_layout_redirect_edge_and_branch,
	cfg_layout_redirect_edge_and_branch_force,
	cfg_layout_merge_blocks, rtl_flow_call_edges_add): Likewise.
	* cgraph.c (cgraph_node, cgraph_create_edge, cgraph_remove_edge,
	cgraph_redirect_edge_callee, cgraph_global_info, cgraph_rtl_info,
	cgraph_varpool_node): Likewise.
	* cgraphunit.c (cgraph_finalize_function,
	cgraph_finalize_compilation_unit, cgraph_mark_functions_to_output,
	cgraph_expand_function, cgraph_remove_unreachable_nodes,
	cgraph_clone_inlined_nodes, cgraph_mark_inline_edge,
	cgraph_mark_inline, cgraph_expand_all_functions,
	cgraph_build_static_cdtor): Likewise.
	* combine.c  (do_SUBST, try_combine, subst, combine_simplify_rtx,
	simplify_logical, distribute_notes, insn_cuid): Likewise.
	* conflict.c (conflict_graph_add, print_conflict): Likewise.
	* coverage.c (rtl_coverage_counter_ref, tree_coverage_counter_ref,
	coverage_checksum_string): Likewise.
	* cse.c (make_new_qty, make_regs_eqv, insert, invalidate,
	hash_rtx, exp_equiv_p, cse_basic_block, count_reg_usage,
	cse_cc_succs, cse_condition_code_reg): Likewise.
	* cselib.c (entry_and_rtx_equal_p, remove_useless_values,
	rtx_equal_for_cselib_p, wrap_constant, cselib_hash_rtx,
	new_cselib_val, cselib_subst_to_values, cselib_invalidate_regno,
	cselib_record_set): Likewise.

From-SVN: r87145
 2004-09-07 15:46:53 +00:00
Kazu Hirata
8c27b7d4d1 c-common.c, [...]: Fix comment formatting. 
* c-common.c, c-decl.c, combine.c, defaults.h, fold-const.c,
	gimplify.c, gthr-nks.h, hooks.c, lambda-code.c, lambda-mat.c,
	stor-layout.c, target.h, tree-cfg.c, tree-chrec.c,
	tree-if-conv.c, tree-inline.c, tree-into-ssa.c,
	tree-mudflap.c, tree-optimize.c, tree-scalar-evolution.c,
	tree-ssa-alias.c, tree-ssa-ccp.c, tree-ssa-dce.c,
	tree-ssa-pre.c, tree-vectorizer.c, tree-vectorizer.h, tree.h,
	vec.h: Fix comment formatting.

From-SVN: r87105
 2004-09-05 16:05:06 +00:00
Roman Zippel
9e42ab3e45 combine.c (try_combine): Delay modifying of insns which cannot be easily undone. 
* combine.c (try_combine): Delay modifying of insns which cannot
        be easily undone.

From-SVN: r87025
 2004-09-02 21:12:12 -07:00
Roman Zippel
b54567e24c * combine.c (distribute_notes): Don't add REG_LABEL to jump insn. 
From-SVN: r87002
 2004-09-02 16:55:09 -07:00
Steven Bosscher
324a6c95a9 ppro.md (ppro_complex_insn): Add missing check for cpu==pentiumpro. 
* config/i386/ppro.md (ppro_complex_insn): Add missing check
	for cpu==pentiumpro.

	* combine.c (struct reg_stat): Fix comment typo.

From-SVN: r86380
 2004-08-22 16:26:03 +00:00
Jakub Jelinek
f3b2657c01 re PR rtl-optimization/17099 (Bootstrap failure on powerpc64-redhat-linux) 
PR rtl-optimization/17099
	* combine.c (force_to_mode): Check if inner_mask has any bits set
	outside of GET_MODE (x) instead of op_mode.

	* gcc.c-torture/execute/20040820-1.c: New test.

From-SVN: r86339
 2004-08-20 22:52:22 +02:00
Zack Weinberg
f822d2527e rtl.def (NIL): Delete. 
* rtl.def (NIL): Delete.
	* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
	Tighten the syntax a little.

	* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
	* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
	* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
	* config/i386/predicates.md, config/m32r/m32r.h
	* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
	* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
	* config/sparc/sparc.h, doc/tm.texi:
	Replace all occurrences of NIL with UNKNOWN.

From-SVN: r86193
 2004-08-18 17:05:14 +00:00
Richard Henderson
389fdba06a rtl.h (MEM_READONLY_P): Replace RTX_UNCHANGING_P. 
* rtl.h (MEM_READONLY_P): Replace RTX_UNCHANGING_P.
	* alias.c (true_dependence): Update to match new semantics.
	(canon_true_dependence, write_dependence_p): Likewise.
	(anti_dependence, output_dependence): Update write_dependence_p args.
	(unchanging_anti_dependence): Remove.
	* calls.c (purge_mem_unchanging_flag): Remove.
	(fixup_tail_calls): Don't call it.
	(expand_call): Don't add unchanging memory to function usage.
	* expr.c (emit_block_move_via_libcall): Likewise.
	(clear_storage_via_libcall): Don't clobber RTX_UNCHANGING_P mems.
	(get_subtarget): Don't use RTX_UNCHANGING_P.
	(expand_assignment, store_constructor, expand_expr_real_1): Likewise.
	(do_tablejump): Set MEM_READONLY_P, not RTX_UNCHANGING_P.
	* combine.c (get_last_value_validate): Use MEM_READONLY_P.
	* cse.c (insert): Don't use RTX_UNCHANGING_P.
	(cse_insn, canon_hash): Use MEM_READONLY_P.
	* emit-rtl.c (set_mem_attributes_minus_bitpos): Use MEM_READONLY_P
	instead of RTX_UNCHANGING_P.
	* explow.c (maybe_set_unchanging): Remove.
	* expr.h (maybe_set_unchanging): Remove.
	* flow.c (insn_dead_p, mark_used_regs): Use anti_dependence.
	* function.c (assign_stack_temp_for_type): Don't use RTX_UNCHANGING_P.
	(assign_parm_setup_reg, expand_function_start): Likewise.
	* integrate.c (copy_rtx_and_substitute): Likewise.
	* ra-rewrite.c (emit_colors): Likewise.
	* regmove.c (copy_src_to_dest, regmove_optimize): Likewise.
	(fixup_match_1): Likewise.
	* reload1.c (reload, alter_reg): Likewise.
	* local-alloc.c (validate_equiv_mem): Check MEM_READONLY_P,
	not RTX_UNCHANGING_P.
	(equiv_init_varies_p): Likewise.
	* loop-invariant.c (check_maybe_invariant): Likewise.
	* resource.c (mark_referenced_resources, mark_set_resources): Likewise.
	* loop.c (note_addr_stored): Likewise.
	(prescan_loop): Likewise. Don't check function usage for clobbered
	unchanging memory.
	* rtlanal.c (rtx_unstable_p): Check MEM_READONLY_P,
        not RTX_UNCHANGING_P.
	(rtx_varies_p, modified_between_p, modified_in_p): Likewise.
	* varasm.c (force_const_mem): Likewise.
	* stmt.c (expand_decl): Don't set RTX_UNCHANGING_P.
	* web.c (entry_register): Likewise.
	* tree-gimple.h (get_base_address): Move decl ...
	* tree.h: ... here.
	* doc/rtl.texi (MEM_READONLY_P): Replace RTX_UNCHANGING_P.

	* config/alpha/alpha.c (alpha_set_memflags_1): Rewrite to be
	called via for_each_rtx.  Copy MEM_SCALAR_P, MEM_NOTRAP_P too.
	(alpha_set_memflags): Update to match.

	* config/darwin.c (machopic_indirect_data_reference): Set
	MEM_READONLY_P instead of RTX_UNCHANGING_P.
	(machopic_indirect_call_target): Likewise.
	(machopic_legitimize_pic_address): Likewise.
	* config/arm/arm.c (legitimize_pic_address, arm_gen_load_multiple,
	arm_gen_store_multiple, arm_gen_movmemqi): Likewise.
	* config/arm/arm.md (load_multiple, store_multiple): Likewise.
	* config/frv/frv.md (symGOT2reg): Likewise.
	* config/i386/i386.c (legitimize_pic_address,
	legitimize_tls_address, ix86_split_to_parts): Likewise.
	* config/ia64/ia64.c (ia64_expand_tls_address): Likewise.
	* config/ia64/ia64.md (load_fptr): Likewise.
	* config/m32r/m32r.c (m32r_legitimize_pic_address): Likewise.
	* config/m68k/m68k.c (legitimize_pic_address): Likewise.
	* config/mcore/mcore.c (block_move_sequence): Likewise.
	* config/mn10300/mn10300.md (symGOT2reg): Likewise.
	* config/pa/pa.c (legitimize_pic_address): Likewise.
	* config/rs6000/rs6000.c (rs6000_legitimize_tls_address): Likewise.
	(rs6000_emit_move): Likewise.
	* config/s390/s390.c (legitimize_pic_address): Likewise.
	(legitimize_tls_address): Likewise.
	* config/s390/s390.md (casesi): Likewise.
	* config/sh/sh.c (prepare_move_operands, sh_reorg): Likewise.
	* config/sh/sh.md (symGOT2reg): Likewise.
	* config/sparc/sparc.c (legitimize_pic_address): Likewise.
	* config/v850/v850.md (casesi): Likewise.

	* config/ia64/ia64.c (gen_thread_pointer): Don't set RTX_UNCHANGING_P.
	* config/iq2000/iq2000.c (save_restore_insns): Likewise.
	* config/mips/mips.c (mips_restore_gp): Likewise.
	(mips_save_restore_reg, mips16_gp_pseudo_reg): Likewise.
	* config/sh/sh.c (sh_reorg): Likewise.

From-SVN: r86178
 2004-08-18 01:25:01 -07:00
Steven Bosscher
165b54c3f3 cfgcleanup.c (try_simplify_condjump): Don't remove line notes to avoid unreachable code warnings. 
* cfgcleanup.c (try_simplify_condjump): Don't remove line
	notes to avoid unreachable code warnings.
	* toplev.c (backend_init): Don't emit line notes for
	unreachable code warnings.

	* combine.c (distribute_notes): Don't distribute a
	REG_VTABLE_REF note.
	* final.c (final_scan_insn): Don't handle it.
	* rtl.c (reg_note_name): Remove it.
	* rtl.h (enum reg_node): Dito.

	* emit-rtl.c (force_line_numbers, restore_line_number_status):
	Remove.
	* rtl.h (force_line_numbers, restore_line_number_status):
	Remove prototypes.

	* stmt.c (using_eh_for_cleanups_p, using_eh_for_cleanups): Move...
	* tree-eh.c (using_eh_for_cleanups_p): ...here.  Make static.
	(using_eh_for_cleanups): Also moved here.

	* expr.c (expand_expr_real_1) <CASE_LABEL_EXPR>: Die if we see one.
	<SWITCH_EXPR>: Die if we have a non-NULL SWITCH_BODY.  Update calls
	to expand_start_case and add_case_node.
	* stmt.c (struct nesting): Cleanup unused fields condition_code,
	last_unconditional_cleanup, nominal_type, printname, and
	line_number_status.
	(struct fixup_goto): Remove.
	(struct stmt_status): Remove x_goto_fixup_chain field.
	(goto_fixup_chain): Remove.
	(strip_default_case_nodes, group_case_nodes, emit_jump_if_reachable,
	pushcase, pushcase_range): Remove.
	(expand_start_bindings_and_block): Don't set unused fields in
	the nesting stack.
	(expand_start_case, add_case_node): Cleanup unused formal arguments.
	(expand_end_case_type): Don't simplify the case-list.  Use emit_jump
	instead of emit_jump_if_reachable.
	(emit_case_nodes): Likewise.
	* tree-cfg.c (group_case_labels, cleanup_dead_labels): No longer
	static.
	(update_eh_label): Work around left-over exception handing regions.
	* tree-flow.h (group_case_labels, cleanup_dead_labels): Add protos.
	* tree-optimize.c (execute_cleanup_cfg_post_optimizing): New function.
	(pass_cleanup_cfg_post_optimizing): New pass.
	(init_tree_optimization_passes): Run the new pass after all
	optimizations.
	* tree.h (pushcase, pushcase_range): Remove prototypes.
	(expand_start_case, add_case_node): Update prototypes.

cp/
	* cp-tree.h (struct lang_type): Don't have three GTY options on a
	single bit GTY desc.

java/
	* parse.y (java_complete_expand_methods, java_expand_classes): Don't
	abuse restore_line_number_status.

From-SVN: r84849
 2004-07-17 00:31:15 +00:00
Roman Zippel
8abcb0f705 combine.c (simplify_set): match the mode of the constant 0 with the tested operand to match the compare... 
2004-07-15  Roman Zippel  <zippel@linux-m68k.org>

        * combine.c (simplify_set): match the mode of the constant 0 with
        the tested operand to match the compare behaviour and the
        simplify_relational_operation() expectation.

From-SVN: r84779
 2004-07-15 21:16:21 +00:00
Roger Sayle
6fd21094e5 rtlanal.c (insn_rtx_cost): New function, moved and renamed from combine.c's combine_insn_cost. 
* rtlanal.c (insn_rtx_cost): New function, moved and renamed from
	combine.c's combine_insn_cost.
	* rtl.h (insn_rtx_cost): Prototype here.
	* combine.c (combine_insn_cost): Delete function.
	(combine_validate_cost): Update callers of combine_insn_cost to
	call insn_rtx_cost instead.
	(combine_instructions): Likewise.  Use NONJUMP_INSN_P to avoid
	requesting the rtx_cost of call and/or jump instructions.

	* ifcvt.c (total_bb_rtx_cost): Use insn_rtx_cost instead of calling
	rtx_cost directly.  Don't request/use the cost of call or jump
	instructions.  Return -1 if the cost of any instruction can't be
	determined (or the BB contains a function call).
	(find_if_case_1): Abort transformation if total_bb_rtx_cost returns
	-1 (i.e. can't determine the cost of any instruction or the basic
	block contains a subroutine call).
	(find_if_case_2): Likewise.

From-SVN: r84513
 2004-07-11 14:37:57 +00:00
Jerry Quinn
4b4bf9414f alias.c (nonlocal_mentioned_p, [...]): Use, LABEL_P, JUMP_P, CALL_P, NONJUMP_INSN_P, INSN_P, NOTE_P, BARRIER_P. 
2004-07-08  Jerry Quinn  <jlquinn@optonline.net>

	* alias.c (nonlocal_mentioned_p, nonlocal_referenced_p,
	nonlocal_set_p, init_alias_analysis): Use, LABEL_P, JUMP_P, CALL_P,
	NONJUMP_INSN_P, INSN_P, NOTE_P, BARRIER_P.
	* bb-reorder.c (mark_bb_for_unlikely_executed_section,
	add_labels_and_missing_jumps, find_jump_block,
	fix_crossing_unconditional_branches, add_reg_crossing_jump_notes):
	Likewise.
	* bt-load.c (btr_referenced_p, compute_defs_uses_and_gen,
	link_btr_uses, move_btr_def): Likewise.
	* builtins.c (expand_builtin_longjmp, expand_builtin_nonlocal_goto,
	expand_builtin_expect_jump): Likewise.
	* caller-save.c (save_call_clobbered_regs, insert_one_insn): Likewise.
	* calls.c (expand_call, emit_library_call_value_1): Likewise.
	* cfganal.c (forwarder_block_p): Likewise.
	* cfgbuild.c (inside_basic_block_p, count_basic_blocks,
	make_label_edge, rtl_make_eh_edge, make_edges, find_basic_blocks_1,
	find_bb_boundaries): Likewise.
	* cfgcleanup.c (try_simplify_condjump, try_forward_edges,
	merge_blocks_move_predecessor_nojumps,
	merge_blocks_move_successor_nojumps, insns_match_p,
	flow_find_cross_jump, outgoing_edges_match, try_crossjump_to_edge,
	try_optimize_cfg): Likewise.
	* cfgexpand.c (expand_block, construct_exit_block): Likewise.
	* cfglayout.c (skip_insns_after_block, label_for_bb,
	record_effective_endpoints, insn_locators_initialize,
	fixup_reorder_chain, update_unlikely_executed_notes): Likewise.
	* cfgmainloop.c (create_loop_notes): Likewise.
	* cfgrtl.c (delete_insn, delete_insn_chain,
	create_basic_block_structure, rtl_delete_block, free_bb_for_insn,
	update_bb_for_insn, rtl_merge_blocks, rtl_can_merge_blocks,
	block_label, try_redirect_by_replacing_jump, last_loop_beg_note,
	redirect_branch_edge, force_nonfallthru_and_redirect,
	rtl_tidy_fallthru_edge, back_edge_of_syntactic_loop_p,
	rtl_split_edge, commit_one_edge_insertion, print_rtl_with_bb,
	update_br_prob_note, rtl_verify_flow_info_1, rtl_verify_flow_info,
	purge_dead_edges, cfg_layout_redirect_edge_and_branch,
	cfg_layout_delete_block, cfg_layout_can_merge_blocks_p,
	cfg_layout_merge_blocks, rtl_block_ends_with_call_p,
	need_fake_edge_p, rtl_flow_call_edges_add): Likewise.
	* combine.c (combine_instructions, can_combine_p, try_combine,
	find_split_point, record_dead_and_set_regs, reg_dead_at_p,
	distribute_notes, distribute_links, insn_cuid): Likewise.
	* cse.c (fold_rtx, cse_insn, cse_around_loop,
	invalidate_skipped_block, cse_set_around_loop,
	cse_end_of_basic_block, cse_main, cse_basic_block,
	cse_condition_code_reg): Likewise.
	* cselib.c (cselib_process_insn): Likewise.
	* ddg.c (create_ddg): Likewise.
	* df.c (df_insn_refs_record, df_bb_rd_local_compute, df_insns_modify):
	Likewise.
	* dwarf2out.c (dwarf2out_stack_adjust, dwarf2out_frame_debug,
	gen_label_die, dwarf2out_var_location): Likewise.
	* emit-rtl.c (get_first_nonnote_insn, get_last_nonnote_insn,
	next_insn, previous_insn, next_nonnote_insn, prev_nonnote_insn,
	last_call_insn, active_insn_p, next_label, prev_label,
	link_cc0_insns, next_cc0_user, try_split, add_insn_after,
	add_insn_before, remove_insn, add_function_usage_to,
	reorder_insns, find_line_note, remove_unnecessary_notes,
	emit_insn_after_1, classify_insn): Likewise.
	* except.c (convert_from_eh_region_ranges_1, emit_to_new_bb_before,
	connect_post_landing_pads, sjlj_mark_call_sites,
	sjlj_emit_function_enter, sjlj_emit_function_exit, reachable_handlers,
	can_throw_internal, can_throw_external, set_nothrow_function_flags,
	convert_to_eh_region_ranges): Likewise.
	* explow.c (optimize_save_area_alloca): Likewise.
	* expr.c (expand_expr_real): Likewise.
	* final.c (insn_current_reference_address, compute_alignments,
	shorten_branches, final, scan_ahead_for_unlikely_executed_note,
	final_scan_insn, output_asm_label, leaf_function_p): Likewise.
	* flow.c (first_insn_after_basic_block_note, delete_dead_jumptables,
	propagate_block_delete_insn, propagate_one_insn,
	init_propagate_block_info, propagate_block, libcall_dead_p,
	mark_set_1, attempt_auto_inc, find_auto_inc, try_pre_increment):
	Likewise.
	* function.c (instantiate_virtual_regs,	reorder_blocks_1,
	expand_function_start, expand_function_end, contains,
	thread_prologue_and_epilogue_insns,
	reposition_prologue_and_epilogue_notes): Likewise.
	* gcse.c (constprop_register, bypass_conditional_jumps,
	insert_insn_end_bb, gcse_after_reload): Likewise.
	* genemit.c (gen_expand, gen_split): Likewise.
	* genpeep.c (gen_peephole, main): Likewise.
	* global.c (build_insn_chain): Likewise.
	* graph.c (node_data, print_rtl_graph_with_bb): Likewise.
	* haifa-sched.c (unlink_other_notes, unlink_line_notes,
	get_block_head_tail, no_real_insns_p, rm_line_notes, save_line_notes,
	restore_line_notes, rm_redundant_line_notes, rm_other_notes,
	ok_for_early_queue_removal, set_priorities, sched_init): Likewise.
	* ifcvt.c (count_bb_insns, first_active_insn, last_active_insn,
	cond_exec_process_insns, end_ifcvt_sequence, noce_process_if_block,
	merge_if_block, block_jumps_and_fallthru_p, find_if_block,
	dead_or_predicable): Likewise.
	* integrate.c (try_constants): Likewise.
	* jump.c (rebuild_jump_labels, cleanup_barriers,
	purge_line_number_notes, init_label_info, mark_all_labels,
	squeeze_notes, get_label_before, get_label_after,
	reversed_comparison_code_parts, simplejump_p, pc_set,
	returnjump_p, onlyjump_p, follow_jumps, mark_jump_label,
	delete_barrier, delete_prior_computation, delete_computation,
	delete_related_insns, delete_for_peephole, redirect_jump):
	Likewise.
	* lcm.c (optimize_mode_switching): Likewise.
	* local-alloc.c (validate_equiv_mem, update_equiv_regs, block_alloc):
	Likewise.
	* loop-doloop.c (doloop_valid_p, doloop_optimize): Likewise.
	* loop-invariant.c (find_exits, find_invariants_bb): Likewise.
	* loop-iv.c (simplify_using_assignment): Likewise.
	* loop.c (compute_luids, loop_optimize, scan_loop, libcall_other_reg,
	libcall_benefit, skip_consec_insns, move_movables, prescan_loop,
	find_and_verify_loops, labels_in_range_p, for_each_insn_in_loop,
	loop_bivs_init_find, strength_reduce, check_insn_for_bivs,
	check_insn_for_givs, check_final_value, update_giv_derive,
	basic_induction_var, product_cheap_p, check_dbra_loop,
	loop_insn_first_p, last_use_this_basic_block,
	canonicalize_condition, get_condition, loop_regs_scan, load_mems,
	try_copy_prop, LOOP_BLOCK_NUM, loop_dump_aux): Likewise.
	* modulo-sched.c (doloop_register_get, find_line_note, sms_schedule,
	sms_schedule_by_order): Likewise.
	* optabs.c (emit_no_conflict_block, emit_libcall_block): Likewise.
	* postreload.c (reload_cse_simplify_operands, reload_combine,
	reload_cse_move2add): Likewise.
	* predict.c (can_predict_insn_p, estimate_probability,
	expected_value_to_br_prob, process_note_predictions): Likewise.
	* print-rtl.c (print_rtx, print_rtl, print_rtl_single): Likewise.
	* profile.c (branch_prob): Likewise.
	* ra-build.c (live_out_1, livethrough_conflicts_bb,
	detect_webs_set_in_cond_jump): Likewise.
	* ra-debug.c (ra_print_rtx_object, ra_debug_insns,
	ra_print_rtl_with_bb): Likewise.
	* ra-rewrite.c (insert_stores, rewrite_program2): Likewise.
	* recog.c (next_insn_tests_no_inequality, find_single_use,
	split_all_insns, peephole2_optimize, if_test_bypass_p): Likewise.
	* reg-stack.c (next_flags_user, record_label_references,
	emit_swap_insn, swap_rtx_condition, subst_stack_regs,
	compensate_edge, convert_regs_1): Likewise.
	* regclass.c (scan_one_insn): Likewise.
	* regmove.c (optimize_reg_copy_1, optimize_reg_copy_2, fixup_match_2,
	regmove_optimize, fixup_match_1, single_set_for_csa,
	combine_stack_adjustments_for_block): Likewise.
	* regrename.c (build_def_use, copyprop_hardreg_forward_1): Likewise.
	* reload.c (find_reloads, find_reloads_address_1, subst_reloads,
	find_equiv_reg): Likewise.
	* reload1.c (reload, calculate_needs_all_insns, set_label_offsets,
	reload_as_needed, emit_input_reload_insns, do_output_reload,
	delete_output_reload, delete_address_reloads_1, fixup_abnormal_edges):
	Likewise.
	* reorg.c (find_end_label, emit_delay_sequence,
	delete_from_delay_slot, delete_scheduled_jump, optimize_skip,
	get_jump_flags, rare_destination, mostly_true_jump,
	try_merge_delay_insns, redundant_insn, own_thread_p,
	fill_simple_delay_slots, fill_slots_from_thread,
	fill_eager_delay_slots, relax_delay_slots, make_return_insns,
	dbr_schedule): Likewise.
	* resource.c (find_basic_block, next_insn_no_annul,
	find_dead_or_set_registers, mark_target_live_regs): Likewise.
	* rtl.h (RTX_PREV): Likewise.
	* rtlanal.c (global_reg_mentioned_p, no_labels_between_p,
	no_jumps_between_p, reg_used_between_p, reg_referenced_between_p,
	reg_set_p, find_last_value, dead_or_set_regno_p, find_reg_fusage,
	find_regno_fusage, pure_call_p, replace_label, rtx_referenced_p_1,
	tablejump_p, computed_jump_p, insns_safe_to_move_p,
	find_first_parameter_load, can_hoist_insn_p): Likewise.
	* sched-deps.c (get_condition, add_dependence, sched_analyze_2,
	sched_analyze_insn, sched_analyze, add_forward_dependence): Likewise.
	* sched-ebb.c (fix_basic_block_boundaries, add_deps_for_risky_insns,
	schedule_ebbs): Likewise.
	* sched-rgn.c (is_cfg_nonregular, find_conditional_protection,
	is_conditionally_protected, can_schedule_ready_p,
	add_branch_dependences, debug_dependencies): Likewise.
	* stmt.c (emit_nop, expand_start_case, emit_jump_if_reachable):
	Likewise.
	* unroll.c (unroll_loop, copy_loop_body, back_branch_in_range_p,
	reg_dead_after_loop, loop_find_equiv_value, loop_iterations,
	set_dominates_use, ujump_to_loop_cont): Likewise.
	* var-tracking.c (prologue_stack_adjust, vt_initialize): Likewise.
	* varasm.c (output_constant_pool_1): Likewise.

From-SVN: r84341
 2004-07-09 03:29:35 +00:00
Richard Sandiford
b8ff6ca062 * combine.c (simplify_comparison): Fix comment typo. 
From-SVN: r84098
 2004-07-04 22:22:50 +00:00
Jerry Quinn
3c0cb5de6a alias.c (get_alias_set, [...]): Use MEM_P. 
2004-07-01  Jerry Quinn  <jlquinn@optonline.net>

	* alias.c (get_alias_set, canon_rtx, get_addr,
	nonoverlapping_memrefs_p, nonlocal_referenced_p_1, memory_modified_1):
	Use MEM_P.
	* builtins.c (expand_builtin_prefetch, expand_builtin_profile_func,
	expand_builtin): Likewise.
	* calls.c (expand_call, emit_library_call_value_1, store_one_arg):
	Likewise.
	* combine.c (can_combine_p, combinable_i3pat, try_combine,
	find_split_point, combine_simplify_rtx, simplify_set, make_extraction,
	rtx_equal_for_field_assignment_p, gen_lowpart_for_combine,
	record_dead_and_set_regs_1, get_last_value_validate,
	mark_used_regs_combine, move_deaths, unmentioned_reg_p_1): Likewise.
	* cse.c (check_dependence, canon_hash, equiv_constant,
	gen_lowpart_if_possible, cse_insn, invalidate_from_clobbers,
	cse_around_loop, cse_check_loop_start, cse_set_around_loop,
	count_reg_usage): Likewise.
	* cselib.c (rtx_equal_for_cselib_p, add_mem_for_addr, cselib_lookup,
	cselib_invalidate_mem, cselib_invalidate_rtx, cselib_record_set,
	cselib_record_sets): Likewise.
	* dbxout.c (PARM_PASSED_IN_MEMORY, dbxout_symbol,
	dbxout_symbol_location, dbxout_parms, dbxout_reg_parms): Likewise.
	* ddg.c (mark_mem_use, mark_mem_store, rtx_mem_access_p): Likewise.
	* df.c (df_uses_record): Likewise.
	* dojump (do_jump): Likewise.
	* dwarf2out.c (stack_adjust_offset, mem_loc_descriptor,
	loc_descriptor_from_tree, rtl_for_decl_location, add_bound_info,
	decl_start_label): Likewise.
	* emit-rtl.c (gen_complex_constant_part, gen_highpart,
	operand_subword, change_address_1, make_safe_from): Likewise.
	* explow.c (break_out_memory_refs, copy_all_regs, validize_mem,
	stabilize, force_not_mem): Likewise.
	* expmed.c (store_bit_field, store_split_bit_field, extract_bit_field,
	expand_mult_const, expand_divmod, emit_store_flag): Likewise.
	* expr.c (convert_move, convert_modes, emit_block_move,
	emit_group_load, emit_group_store, clear_storage, emit_move_insn,
	emit_move_insn_1, expand_assignment, store_expr,
	store_constructor_field, store_constructor, store_field,
	force_operand, safe_from_p, expand_expr_real_1, expand_increment):
	Likewise.
	* final.c (cleanup_subreg_operands, alter_subreg,
	get_mem_expr_from_op): Likewise.
	* flow.c (notice_stack_pointer_modification_1,
	init_propagate_block_info, insn_dead_p, mark_set_1, mark_used_regs):
	Likewise.
	* function.c (mark_temp_addr_taken, preserve_temp_slots,
	preserve_rtl_expr_result, put_var_into_stack, fixup_var_refs_1,
	optimize_bit_field, flush_addressof, purge_addressof_1,
	instantiate_decl, instantiate_virtual_regs_1, assign_parms,
	setjmp_protect, setjmp_protect_args, fix_lexical_addr,
	keep_stack_depressed): Likewise.
	* ifcvt.c (noce_try_cmove_arith, noce_try_abs, noce_operand_ok,
	noce_process_if_block, find_memory): Likewise.
	* integrate.c (subst_constants, allocate_initial_values): Likewise.
	* local-alloc.c (validate_equiv_mem_from_store, memref_referenced_p,
	update_equiv_regs): Likewise.
	* loop.c (scan_loop, prescan_loop, note_addr_stored, check_store,
	maybe_eliminate_biv_1, find_mem_in_note_1): Likewise.
	* optabs.c (expand_abs, emit_unop_insn): Likewise.
	* passes.c (rest_of_handle_final): Likewise.
	* postreload.c (reload_cse_simplify_set, reload_cse_simplify_operands,
	move2add_note_store): Likewise.
	* ra-build.c (detect_remat_webs): Likewise.
	* ra-debug.c (dump_static_insn_cost): Likewise.
	* ra-rewrite.c (slots_overlap_p, insert_stores): Likewise.
	* recog.c (validate_change, apply_change_group, cancel_changes,
	validate_replace_rtx_1, general_operand, register_operand,
	nonmemory_operand, push_operand, pop_operand, memory_operand,
	indirect_operand, asm_operand_ok, offsettable_memref_p,
	offsettable_nonstrict_memref_p, constrain_operands,
	store_data_bypass_p): Likewise.
	* reg-stack.c (subst_stack_regs_pat): Likewise.
	* regclass.c (record_operand_costs, scan_one_insn, record_reg_classes,
	copy_cost, reg_scan_mark_refs): Likewise.
	* regmove.c (optimize_reg_copy_3, stack_memref_p,
	combine_stack_adjustments_for_block): Likewise.
	* regrename.c (copyprop_hardreg_forward_1): Likewise.
	* reload.c (can_reload_into, push_reload, decompose, immune_p,
	find_reloads, find_reloads_address, find_reloads_address_1,
	reg_overlap_mentioned_for_reload_p, refers_to_mem_for_reload_p,
	find_equiv_reg): Likewise.
	* reload1.c (reload, eliminate_regs, eliminate_regs_in_insn,
	reload_as_needed, choose_reload_regs, emit_input_reload_insns,
	do_input_reload, emit_reload_insns, gen_reload, delete_output_reload,
	delete_address_reloads): Likewise.
	* resource.c (mark_referenced_resources): Likewise.
	* rtlanal.c (get_jump_table_offset, count_occurrences,
	reg_referenced_p, reg_set_p, set_of_1, set_noop_p,
	reg_overlap_mentioned_p, note_uses, replace_regs, nonzero_bits1,
	num_sign_bit_copies1): Likewise.
	* rtlhooks.c (gen_lowpart_general): Likewise.
	* sched-deps.c (sched_analyze_1, sched_analyze_2): Likewise.
	* sdbout.c (PARM_PASSED_IN_MEMORY, sdbout_symbol,
	sdbout_toplevel_data, sdbout_parms, sdbout_reg_parms,
	sdbout_global_decl): Likewise.
	* simplify-rtx.c (simplify_subreg): Likewise.
	* stmt.c (expand_asm_operands, expand_expr_stmt_value, expand_decl,
	expand_anon_union_decl, expand_end_case_type): Likewise.
	* unroll.c (calculate_giv_inc): Likewise.
	* var-tracking.c (stack_adjust_offset_pre_post,
	bb_stack_adjust_offset, track_expr_p, count_uses, add_uses,
	add_stores, compute_bb_dataflow, vt_get_decl_and_offset,
	vt_add_function_parameters): Likewise.
	* varasm.c (make_var_volatile, notice_global_symbol,
	assemble_external, decode_addr_const, mark_weak,
	default_encode_section_info): Likewise.

From-SVN: r83980
 2004-07-01 12:52:53 +00:00
Per Bothner
6773e15fa5 Conditionally compile support for --enable-mapped_location. 
* cfgexpand.c:  Handle USE_MAPPED_LOCATION case for function_end_locus.
	* cfglayout.c (insn_locators_initialize):  Const cleanup.  New macros.
	* cfgrtl.c (delete_insn):  Use new NOTE_DELETED_LABEL_NAME macro.
	* print-rtl.c (print_rtx):  Likewise.
	* emit-rtl.c:  Don't clear NOTE_SOURCE_FILE if USE_MAPPED_LOCATION.
	* combine.c:  Use new SET_INSN_DELETED macro.
	* flow.c:  Likewise.
	* haifa-sched.c:  Likewise.
	* ifcvt.c:  Likewise.
	* recog.c:  Likewise.
	* reload1.c:  Likewise.
	* diagnostic.c:  Use expand_location macro.
	* pretty-print.c (pp_base_format_text):  Likewise.
	* profile.c:  Likewise.
 	* dwarf2out.c:  Likewise.  Also use expand_location, DECL_IS_BUILTIN.
 	* dwarf2out.c (dwarf2out_decl:  Use BUILTINS_LOCATION.
	* emit-rtl.c (emit_line_note):  Simplify if USE_MAPPED_LOCATION.
	(force_next_line_note, insn_emit):  Handle USE_MAPPED_LOCATION case.
	* final.c (final):  Likewise.
	* haifa-sched.c:  Likewise.
	* integrate.c:  Likewise.
	* jump.c:  Likewise.
	* rtl-error.c:  Likewise.
	* stmt.c (check_seenlabel):  Likewise.
	* tree-pretty-print.c:  Likewise.

From-SVN: r83921
 2004-06-30 11:18:01 -07:00
Roger Sayle
64b8935d48 combine.c: Include "output.h" to define dump_file. 
* combine.c: Include "output.h" to define dump_file.
	(uid_insn_cost, last_insn_cost): New global variables.
	(combine_insn_cost): New function to estimate cost of an insn.
	(combine_validate_cost): New function to determine whether a
	try_combine replacement sequence is cheaper than the original.
	(combine_instructions): Allocate and populate uid_insn_cost
	array at the start of the combine pass, and deallocate it after.
	(try_combine): Check combine_validate_cost to determine whether
	a "recombination" should be rejected as being more expensive.
	* Makefile.in (combine.o): Add dependency upon output.h.

From-SVN: r83908
 2004-06-30 13:02:36 +00:00
Zack Weinberg
2cd54c2a56 combine.c (distribute_notes): Don't look at global_regs for pseudos. 
* combine.c (distribute_notes): Don't look at global_regs for
	pseudos.

From-SVN: r83889
 2004-06-30 03:28:31 +00:00
Ulrich Weigand
45da19e38e combine.c (can_combine_p): Do not prevent building insns that use and clobber the same fixed hard register. 
* combine.c (can_combine_p): Do not prevent building insns that use
	and clobber the same fixed hard register.
	(reg_dead_at_p): Likewise.

From-SVN: r83785
 2004-06-28 13:11:44 +00:00
Eric Christopher
de7c79cc77 combine.c (distribute_notes): Don't delete sets to global register variables. 
2004-06-24  Eric Christopher  <echristo@redhat.com>

	* combine.c (distribute_notes): Don't delete sets to
	global register variables.

From-SVN: r83606
 2004-06-24 19:15:43 +00:00
Jerry Quinn
f8cfc6aa07 alias.c (record_set, [...]): Use REG_P. 
2004-06-15  Jerry Quinn  <jlquinn@optonline.net>

	* alias.c (record_set, record_base_value, canon_rtx, get_addr,
	nonlocal_mentioned_p_1, init_alias_analysis): Use REG_P.
	* bt-load.c (find_btr_reference, insn_sets_btr_p, note_btr_set):
	Likewise.
	* builtins.c (expand_builtin_setjmp, expand_builtin_apply,
	expand_builtin_mathfn, expand_builtin_strlen, expand_builtin_memcmp,
	expand_builtin_strcmp, expand_builtin_strncmp,
	expand_builtin_frame_address): Likewise.
	* caller-save.c (mark_set_regs, add_stored_regs, mark_referenced_regs,
	insert_one_insn): Likewise.
	* calls.c (prepare_call_address, precompute_register_parameters,
	precompute_arguments, expand_call, emit_library_call_value_1): Likewise.
	* cfganal.c (flow_active_insn_p): Likewise.
	* combine.c (set_nonzero_bits_and_sign_copies, can_combine_p,
	combinable_i3pat, try_combine, find_split_point, COMBINE_RTX_EQUAL_P,
	subst, combine_simplify_rtx, simplify_if_then_else, simplify_set,
	make_extraction, recog_for_combine, gen_lowpart_for_combine,
	simplify_comparison, record_dead_and_set_regs_1,
	record_dead_and_set_regs, record_promoted_value,
	check_promoted_subreg, get_last_value_validate, get_last_value,
	reg_dead_at_p_1, reg_bitfield_target_p, distribute_notes,
	unmentioned_reg_p_1): Likewise.
	* conflict.c (mark_reg): Likewise.
	* cse.c (HASH, COST, COST_IN, approx_reg_cost_1, notreg_cost,
	mention_regs, insert_regs, lookup, lookup_for_remove, insert,
	merge_equiv_classes, flush_hash_table, invalidate,
	remove_invalid_refs, remove_invalid_subreg_refs, rehash_using_reg,
	invalidate_for_call, use_related_value, canon_hash, exp_equiv_p,
	cse_rtx_varies_p, canon_reg, find_best_addr, fold_rtx, equiv_constant,
	record_jump_cond, cse_insn, addr_affects_sp_p,
	invalidate_from_clobbers, cse_process_notes, cse_around_loop,
	cse_set_around_loop, count_reg_usage, set_live_p, cse_change_cc_mode,
	cse_cc_succs, cse_condition_code_reg): Likewise.
	* cselib.c (cselib_reg_set_mode, rtx_equal_for_cselib_p,
	cselib_lookup, cselib_invalidate_regno, cselib_invalidate_rtx,
	cselib_record_set, cselib_record_sets): Likewise.
	* dbxout.c (dbxout_symbol_location, dbxout_parms, dbxout_reg_parms,
	dbxout_block): Likewise.
	* df.c (df_ref_record, df_def_record_1, df_uses_record): Likewise.
	* dojump.c (do_jump): Likewise.
	* dwarf2out.c (dwarf2out_frame_debug_expr, is_pseudo_reg,
	is_based_loc, rtl_for_decl_location): Likewise.
	* emit-rtl.c (set_reg_attrs_for_parm, set_decl_rtl,
	set_decl_incoming_rtl, mark_user_reg): Likewise.
	* explow.c (copy_all_regs, copy_all_regs, memory_address, force_reg,
	copy_to_suggested_reg, allocate_dynamic_stack_space,
	probe_stack_range, hard_function_value): Likewise.
	* expmed.c (store_bit_field, store_fixed_bit_field,
	store_split_bit_field, extract_bit_field, extract_fixed_bit_field,
	extract_split_bit_field, expand_divmod, emit_store_flag_force):
	Likewise.
	* expr.c (convert_move, convert_modes,
	block_move_libcall_safe_for_call_parm, emit_group_load, use_reg,
	use_group_regs, emit_move_insn, emit_move_insn_1,
	compress_float_constant, push_block, emit_single_push_insn,
	emit_push_insn, get_subtarget, expand_assignment, store_expr,
	store_constructor, store_field, force_operand, safe_from_p,
	expand_expr_real_1, expand_increment, do_store_flag, do_tablejump):
	Likewise.
	* final.c (profile_function, final_scan_insn, alter_subreg,
	get_mem_expr_from_op, output_asm_operand_names, output_operand,
	only_leaf_regs_used, leaf_renumber_regs_insn): Likewise.
	* flow.c (verify_wide_reg_1, mark_regs_live_at_end,
	find_regno_partial, propagate_one_insn, init_propagate_block_info,
	insn_dead_p, libcall_dead_p, mark_set_1, not_reg_cond,
	attempt_auto_inc, find_auto_inc, mark_used_regs,
	count_or_remove_death_notes_bb): Likewise.
	* function.c (find_temp_slot_from_address, update_temp_slot_address,
	preserve_temp_slots, put_var_into_stack, fixup_var_refs_insn,
	fixup_var_refs_1, fixup_stack_1, optimize_bit_field, flush_addressof,
	put_addressof_into_stack, purge_addressof_1, insns_for_mem_walk,
	purge_single_hard_subreg_set, instantiate_decl,
	instantiate_virtual_regs_1, aggregate_value_p, assign_parms,
	promoted_input_arg, setjmp_vars_warning, setjmp_args_warning,
	setjmp_protect, setjmp_protect_args, fix_lexical_addr,
	expand_function_start, diddle_return_value, clobber_return_register,
	expand_function_end, keep_stack_depressed, handle_epilogue_set,
	update_epilogue_consts): Likewise.
	* genemit.c (gen_exp, gen_insn): Likewise.
	* genrecog.c (make_insn_sequence): Likewise.
	* global.c (global_conflicts, expand_preferences, mark_reg_store,
	mark_reg_conflicts, set_preference, reg_becomes_live,
	build_insn_chain, mark_reg_change): Likewise.
	* haifa_sched.c (CONST_BASED_ADDRESS_P, find_set_reg_weight):
	Likewise.
	* ifcvt.c (noce_try_abs, noce_get_condition, noce_process_if_block):
	Likewise.
	* integrate.c (copy_rtx_and_substitute, try_constants,
	subst_constants, mark_stores, allocate_initial_values): Likewise.
	* jump.c (reversed_comparison_code_parts, delete_prior_computation,
	delete_computation, rtx_renumbered_equal_p, true_regnum,
	reg_or_subregno): Likewise.
	* lcm.c (reg_dies, reg_becomes_live): Likewise.
	* local-alloc.c (validate_equiv_mem_from_store, validate_equiv_mem,
	update_equiv_regs, no_equiv, block_alloc, combine_regs, reg_is_set,
	wipe_dead_reg, no_conflict_p): Likewise.
	* loop-iv.c (simple_reg_p, simple_set_p, kill_sets,
	iv_get_reaching_def, iv_analyze_biv, altered_reg_used, mark_altered,
	simple_rhs_p, simplify_using_assignment, implies_p): Likewise.
	* loop.c (scan_loop, combine_movables, rtx_equal_for_loop_p,
	move_movables, note_set_pseudo_multiple_uses, consec_sets_invariant_p,
	find_single_use_in_loop, count_one_set, loop_bivs_init_find,
	loop_givs_rescan, check_insn_for_bivs, check_insn_for_givs,
	valid_initial_value_p, simplify_giv_expr, consec_sets_giv,
	loop_regs_update, check_dbra_loop, maybe_eliminate_biv,
	maybe_eliminate_biv_1, record_initial, update_reg_last_use,
	canonicalize_condition, loop_regs_scan, load_mems, try_copy_prop,
	try_swap_copy_prop): Likewise.
	* optabs.c (expand_binop, expand_vector_binop, expand_vector_unop,
	expand_abs, emit_no_conflict_block, emit_libcall_block, expand_float):
	Likewise.
	* postreload.c (reload_cse_simplify, reload_cse_simplify_set,
	reload_cse_simplify_operands, reload_combine,
	reload_combine_note_store, reload_combine_note_use,
	reload_cse_move2add, move2add_note_store): Likewise.
	* print-rtl.c (print_rtx): Likewise.
	* ra-build.c (copy_insn_p, remember_move, init_one_web_common,
	contains_pseudo, handle_asm_insn): Likewise.
	* ra-debug.c (ra_print_rtx_object, dump_constraints,
	dump_static_insn_cost): Likewise.
	* ra-rewrite.c (slots_overlap_p, emit_colors,
	remove_suspicious_death_notes): Likewise.
	* recog.c (validate_replace_rtx_1, find_single_use_1, find_single_use,
	register_operand, scratch_operand, nonmemory_operand,
	constrain_operands): Likewise.
	* reg-stack (check_asm_stack_operands, remove_regno_note,
	emit_swap_insn, swap_rtx_condition, subst_stack_regs_pat,
	subst_asm_stack_regs): Likewise.
	* regclass.c (scan_one_insn, record_reg_classes, copy_cost,
	record_address_regs, reg_scan_mark_refs): Likewise.
	* regmove.c (discover_flags_reg, replacement_quality,
	copy_src_to_dest, reg_is_remote_constant_p, regmove_optimize,
	fixup_match_1): Likewise.
	* regrename.c (note_sets, clear_dead_regs, build_def_use, kill_value,
	kill_set_value, copyprop_hardreg_forward_1): Likewise.
	* reload.c (MATCHES, push_secondary_reload, find_reusable_reload,
	reload_inner_reg_of_subreg, can_reload_into, push_reload,
	combine_reloads, find_dummy_reload, hard_reg_set_here_p,
	operands_match_p, decompose, find_reloads, find_reloads_toplev,
	find_reloads_address, subst_indexed_address, find_reloads_address_1,
	find_reloads_subreg_address, find_replacement,
	refers_to_regno_for_reload_p, reg_overlap_mentioned_for_reload_p,
	refers_to_mem_for_reload_p, find_equiv_reg, regno_clobbered_p): Likewise.
	* reload1.c (replace_pseudos_in, reload, calculate_needs_all_insns,
	find_reg, delete_dead_insn, alter_reg, eliminate_regs,
	elimination_effects, eliminate_regs_in_insn, scan_paradoxical_subregs,
	forget_old_reloads_1, reload_reg_free_for_value_p, choose_reload_regs,
	emit_input_reload_insns, emit_output_reload_insns, do_input_reload,
	do_output_reload, emit_reload_insns, gen_reload,
	delete_address_reloads_1, inc_for_reload): Likewise.
	* reorg.c (update_reg_dead_notes, fix_reg_dead_note,
	update_reg_unused_notes, fill_slots_from_thread): Likewise.
	* resource.c (update_live_status, mark_referenced_resources,
	mark_set_resources, mark_target_live_regs): Likewise.
	* rtlanal.c (nonzero_address_p, get_jump_table_offset,
	global_reg_mentioned_p_1, reg_mentioned_p, reg_referenced_p,
	reg_set_p, set_noop_p, find_last_value, refers_to_regno_p,
	note_stores, dead_or_set_p, dead_or_set_regno_p, find_regno_note,
	find_reg_fusage, find_regno_fusage, replace_regs, regno_use_in,
	parms_set, find_first_parameter_load, keep_with_call_p,
	hoist_test_store, hoist_update_store, address_cost, nonzero_bits1,
	num_sign_bit_copies1): Likewise.
	* rtlhooks.c (gen_lowpart_general): Likewise.
	* sched-deps.c (deps_may_trap_p, sched_analyze_1, sched_analyze_insn,
	sched_analyze): Likewise.
	* sched-rgn.c (check_live_1, update_live_1, sets_likely_spilled_1):
	Likewise.
	* sdbout.c (sdbout_symbol, sdbout_parms, sdbout_reg_parms): Likewise.
	* simplify-rtx.c (simplify_replace_rtx, simplify_unary_operation,
	simplify_binary_operation, simplify_const_relational_operation,
	simplify_subreg): Likewise.
	* stmt.c (decl_conflicts_with_clobbers_p, expand_asm_operands,
	expand_end_stmt_expr, expand_return, expand_decl,
	expand_anon_union_decl): Likewise.
	* unroll.c (precondition_loop_p, calculate_giv_inc, copy_loop_body,
	find_splittable_regs, find_splittable_givs, find_common_reg_term,
	loop_iterations): Likewise.
	* var-tracking.c (variable_union, variable_part_different_p,
	variable_different_p, count_uses, add_uses, add_stores,
	compute_bb_dataflow, set_variable_part, delete_variable_part,
	emit_notes_in_bb, vt_get_decl_and_offset, vt_add_function_parameters):
	Likewise.
	* varasm.c (assemble_variable): Likewise.

From-SVN: r83195
 2004-06-15 18:02:40 +00:00
J"orn Rennecke
e867970356 * combine.c (distribute_notes): Comment typo fix. 
From-SVN: r83191
 2004-06-15 16:55:27 +01:00
Graham Stott
446f52f40b combine.c (simplify_shift_const): Check shift amount is a CONST_INT. 
* combine.c(simplify_shift_const): Check shift amount is a
	CONST_INT.

From-SVN: r82644
 2004-06-05 07:59:39 +00:00
Paolo Bonzini
1999435c8a revert: combine.c (gen_binary): Remove. 
2004-05-31  Paolo Bonzini  <bonzini@gnu.org>

	Revert this patch:
	2004-05-27  Paolo Bonzini  <bonzini@gnu.org>

	* combine.c (gen_binary): Remove.
	(known_cond, simplify_shift_const
	find_split_point, combine_simplify_rtx,
	simplify_if_then_else, simplify_set,
	simplify_logical, expand_field_assignment,
	extract_left_shift, force_to_mode,
	if_then_else_cond, apply_distributive_law,
	simplify_and_const_int, simplify_shift_const,
	gen_lowpart_for_combine, simplify_comparison,
	reversed_comparison): Replace with
	simplify_gen_binary, simplify_gen_relational or
	distribute_and_simplify_rtx.
	(distribute_and_simplify_rtx): New function.

From-SVN: r82475
 2004-05-31 06:59:47 +00:00
Paolo Bonzini
dce1438a65 combine.c (gen_binary): Remove. 
2004-05-25  Paolo Bonzini  <bonzini@gnu.org>

        * combine.c (gen_binary): Remove.
        (known_cond, simplify_shift_const
        find_split_point, combine_simplify_rtx,
        simplify_if_then_else, simplify_set,
        simplify_logical, expand_field_assignment,
        extract_left_shift, force_to_mode,
        if_then_else_cond, apply_distributive_law,
        simplify_and_const_int, simplify_shift_const,
        gen_lowpart_for_combine, simplify_comparison,
        reversed_comparison): Replace with
        simplify_gen_binary, simplify_gen_relational or
        distribute_and_simplify_rtx.
        (distribute_and_simplify_rtx): New function.
        * simplify-rtx.c (simplify_binary_operation):
        Use nonzero_bits to simplify ANDs where we are
        turning off bits already known to be off in OP0.

From-SVN: r82317
 2004-05-27 08:28:31 +00:00
Paolo Bonzini
2f93eea861 Makefile.in (OBJS): Add rtlhooks.o. 
2004-05-25  Paolo Bonzini  <bonzini@gnu.org>

	* Makefile.in (OBJS): Add rtlhooks.o.
	(rtlanal.o): Depend on function.h.
	(cse.o): Depend on rtlhooks-def.h.
	(combine.o): Depend on rtlhooks-def.h.
	(rtlhooks.o): New rule.
	* combine.c: Include rtlhooks-def.h.
	(nonzero_bits, cached_nonzero_bits, nonzero_bits1,
	num_sign_bit_copies, cached_num_sign_bit_copies,
	num_sign_bit_copies1): Move most of the code to rtlanal.c.
	(reg_nonzero_bits_for_combine,
	reg_num_sign_bit_copies_for_combine): New functions holding
	the remnants of the above.
	(combine_rtl_hooks): New.
	(combine_instructions): Set rtl_hooks instead of gen_lowpart.
	* cse.c: Include rtlhooks-def.h.
	(cse_rtl_hooks): New.
	(cse_main): Set rtl_hooks instead of gen_lowpart.
	* emit-rtl.c (gen_lowpart): Remove.
	(gen_lowpart_general): Move to rtlhooks.c.
	* rtl.h (nonzero_bits, num_sign_bit_copies,
	struct rtl_hooks, rtl_hooks, general_rtl_hooks): New.
	(gen_lowpart_general): Remove.
	(gen_lowpart): Temporarily redefine as a macro.
	* rtlanal.c: Include function.h.
	(nonzero_bits, cached_nonzero_bits, nonzero_bits1,
	num_sign_bit_copies, cached_num_sign_bit_copies,
	num_sign_bit_copies1): New, from combine.c.
	* rtlhooks.c: New file.

From-SVN: r82234
 2004-05-25 12:04:17 +00:00
Steven Bosscher
827c06b6cf basic-block.h (life_analysis, [...]): Update prototypes. 
* basic-block.h (life_analysis, delete_noop_moves):
	Update prototypes.
	* bt-load.c (branch_target_load_optimize): Don't take the
	insns stream as an argument.  Update the life_analysis calls.
	* combine.c (combine_instructions): Update delete_noop_moves
	calls.
	* flow.c (notice_stack_pointer_modification): Don't take the
	insns stream as an argument.  Work on the flow graph.
	(life_analysis): Likewise.
	(delete_noop_moves): Likewise.
	* passes.c (rest_of_handle_stack_regs): Update reg_to_stack call.
	(rest_of_handle_life): Update life_analysis call.
	(rest_of_compilation): Likewise, and also update
	branch_target_load_optimize call.
	* ra.c (reg_alloc): Update life_analysis call.
	* reg-stack.c (reg_to_stack): Likewise.  Also, don't take
	the insns stream as an argument.
	* regrename.c (copyprop_hardreg_forward): Update delete_noop_moves
	call.
	* rtl.c (branch_target_load_optimize, reg_to_stack): Update
	prototypes.
	* value-profile.c (branch_prob): Update life_analysis call.
	* web.c (web_main): Work on the CFG, not on the insns stream.

	* config/ip2k/ip2k.c (ip2k_reorg): Update life_analysis calls.
	* config/m68hc11/m68hc11.c (m68hc11_reorg): Likewise.
	* config/sh/sh.c (sh_output_mi_thunk): Likewise.

From-SVN: r81873
 2004-05-15 09:39:30 +00:00
Diego Novillo
6de9cd9a88 Merge tree-ssa-20020619-branch into mainline. 
From-SVN: r81764
 2004-05-13 02:41:07 -04:00
Paolo Bonzini
5eaad4813d Replace several arrays with a struct of arrays. 
2004-05-12  Paolo Bonzini  <bonzini@gnu.org>

	Replace several arrays with a struct of arrays.
        * combine.c (struct reg_stat): New.
        (init_reg_last_arrays): Renamed to...
        (init_reg_last): ...this.  Callers adjusted.
        (reg_stat): New.
        (combine_instructions): Allocate it and use it.
        (reg_last_death, reg_last_set, reg_last_set_value,
        reg_last_set_label, reg_last_set_table_tick,
        reg_last_set_invalid, reg_nonzero_bits, reg_sign_bit_copies,
        reg_last_set_mode, reg_last_set_nonzero_bits,
        reg_last_set_sign_bit_copies): Replace throughout
        with items of reg_stat.

From-SVN: r81740
 2004-05-12 08:32:00 +00:00
Kaz Kojima
e51f915912 re PR rtl-optimization/15100 (cc1plus got hang-up on libstdc++-v3/testsuite/abi_check.cc) 
PR optimization/15100
	* combine.c (distribute_notes): Don't create a dangling
	REG_LIBCALL/REG_RETVAL note.

From-SVN: r81736
 2004-05-12 04:32:01 +00:00
Paolo Bonzini
c520783756 Complete last checkin: 
2004-04-29  Paolo Bonzini  <bonzini@gnu.org>

	Complete last checkin:
        * combine.c (combine_simplify_rtx): Adjust call to use
        simplify_relational_operation.  Do not use SELECT_CC_MODE
        when a comparison already has a MODE_CC mode.

From-SVN: r81283
 2004-04-29 08:08:44 +00:00
Paolo Bonzini
c6fb08ad28 combine.c (combine_simplify_rtx): Adjust call to use simplify_relational_operation. 
2004-04-29  Paolo Bonzini  <bonzini@gnu.org>

        * combine.c (combine_simplify_rtx): Adjust call to use
        simplify_relational_operation.  Do not use SELECT_CC_MODE
        when a comparison already has a MODE_CC mode.
        (simplify_set): simplify_relational_operation may now
        return another relational expression.
        * cse.c (fold_rtx): simplify_relational_operation now
        takes of computing the comparison mode.
        * dojump.c (compare_from_rtx): Use simplify_relational_operation,
        remove dead code.
        (do_compare_rtx_and_jump): Likewise.
        * integrate.c (subst_constants): simplify_relational_operation
        may now return another relational expression.
        * simplify-rtx.c (simplify_gen_relational): Move most code to
        the new simplify_relational_operation and
        simplify_relational_operation_1 functions.
        (simplify_relational_operation): Rewritten.
        (simplify_relational_operation_1): New function.
        (simplify_ternary_operation): simplify_relational_operation
        may now return another relational expression.
        (simplify_rtx): Remove unnecessary temp variable.

From-SVN: r81282
 2004-04-29 07:50:55 +00:00
Paolo Bonzini
6621d78e99 combine.c (combine_simplify_rtx): Remove the "last" parameter and its documentation. 
2004-03-16  Paolo Bonzini  <bonzini@gnu.org>

	* combine.c (combine_simplify_rtx): Remove the "last"
	parameter and its documentation.  Adjust recursive calls.
	(simplify_logical): Always perform the only simplification
	controlled by "last", if the simplified expression is
	actually different.
	(try_combine): Do not pass the "last" parameter to
	combine_simplify_rtx.

From-SVN: r79534
 2004-03-16 16:14:50 +00:00
Roger Sayle
67962db535 combine.c (unmentioned_reg_p): New function to check whether an expression is a "specialization" of another, i.e. 
* combine.c (unmentioned_reg_p): New function to check whether an
	expression is a "specialization" of another, i.e. that there are
	no registers or memory references mentioned in the first that don't
	appear in the second.
	(unmentioned_reg_p_1): New helper subroutine of unmentioned_reg_p.
	(combine_instructions): Also try combining instructions using the
	REG_EQUAL note from a preceding log-linked instruction.

From-SVN: r79398
 2004-03-12 17:38:30 +00:00
Ulrich Weigand
bbe708a391 combine.c (if_then_else_cond): Check for NULL return value of simplify_gen_subreg. 
ChangeLog:

	* combine.c (if_then_else_cond): Check for NULL return value of
	simplify_gen_subreg.

testsuite/ChangeLog:

	* gcc.dg/20040310-1.c: New test.

From-SVN: r79347
 2004-03-11 22:48:36 +00:00
Kazu Hirata
71cc389ba1 c-typeck.c, [...]: Fix comment typos and formatting. 
* c-typeck.c, combine.c, cse.c, dominance.c, et-forest.h,
	ggc-page.c, var-tracking.c, config/fp-bit.c, config/c4x/c4x.c,
	config/cris/cris.c, config/i386/ppro.md, config/i860/i860.c,
	config/i860/i860.h, config/m32r/m32r.h, config/m32r/xm-m32r.h,
	config/m68hc11/m68hc11.h, config/m68hc11/m68hc11.md,
	config/mips/mips.c, config/mmix/mmix.c, config/ns32k/ns32k.h,
	config/pa/pa.c, config/pa/pa32-regs.h, config/pa/pa64-regs.h,
	config/pdp11/pdp11.h, config/rs6000/rs6000.c,
	config/stormy16/stormy16.c: Fix comment typos and formatting.

From-SVN: r79303
 2004-03-11 05:54:35 +00:00
Roger Sayle
7ce3e360d6 simplify-rtx.c (simplify_const_relational_operation): New function renamed from simplify_relational_operation. 
* simplify-rtx.c (simplify_const_relational_operation): New function
	renamed from simplify_relational_operation.
	(simplify_relational_operation): Change prototype to accept an
	additional mode argument.  Call simplify_const_relational_operation.
	(simplify_gen_relational): Update simplify_relational_operation call.
	(simplify_ternary_operation): Update simplify_relational_operation
	subroutine call to use simplify_const_relational_operation instead.

	* rtl.h (simplify_const_relational_operation): Prototype here.
	(simplify_relational_operation): Add addtional mode argument.

	* combine.c (combine_simplify_rtx): Update calls to
	simplify_relational_operation.
	(simplify_set): Likewise.
	(gen_binary): Likewise.
	* cse.c (fold_rtx): Likewise.
	* dojump.c (compare_from_rtx): Likewise.
	(do_compare_rtx_and_jump): Likewise.
	* integrate.c (subst_constants): Likewise.
	* unroll.c (simplify_cmp_and_jump_insns): Likewise.

From-SVN: r79187
 2004-03-09 17:06:25 +00:00
Paolo Bonzini
ec8e098d3d alias.c (rtx_equal_for_memref_p): Use predicates to test rtx classes and new rtx class codes... 
2004-02-07  Paolo Bonzini  <bonzini@gnu.org>

	* alias.c (rtx_equal_for_memref_p): Use predicates
	to test rtx classes and new rtx class codes, possibly
	splitting conditionals that tested against '<' and 'o'.
	* caller-save.c (save_call_clobbered_regs): Likewise.
	* combine.c (contains_muldiv, find_split_point, subst,
	combine_simplify_rtx, simplify_if_then_else,
	simplify_set, simplify_logical, expand_compound_operation,
	make_compound_operation, if_then_else_cond, known_cond,
	apply_distributive_law, cached_nonzero_bits,
	cached_num_sign_bit_copies, simplify_shift_const,
	gen_binary, simplify_comparison, update_table_tick,
	record_value_for_reg, get_lsat_value_validate): Likewise.
	* cse.c (mention_regs, find_best_addr, find_comparison_args,
	fold_rtx, cse_insn, invalidate_memory, cse_basic_block):
	Likewise.
	* emit-rtl.c (copy_insn_1): Likewise.
	* expr.c (force_operand): Likewise.
	* final.c (final_scan_insn, get_mem_expr_from_op): Likewise.
	* flow.c (notice_stack_pointer_modification_1,
	invalidate_mems_from_autoinc, ior_reg_cond, not_reg_cond,
	and_reg_cond, elim_reg_cond): Likewise.
	* function.c (update_epilogue_consts): Likewise.
	* genattrtab.c (attr_rtx_1): Likewise.
	* genopinit.c (gen_insn): Likewise.
	* integrate.c (subst_constants): Likewise.
	* jump.c (reversed_comparison_code_parts,
	reversed_comparison_code, delete_related_insns,
	rtx_renumbered_equal_p): Likewise.
	* local-alloc.c (block_alloc): Likewise.
	* loop.c (rtx_equal_for_prefetch_p, maybe_eliminate_biv,
	canonicalize_condition): Likewise.
	* loop-iv.c (simplify_using_conditions, iv_number_of_iterations):
	Likewise.
	* optabs.c (add_equal_node, expand_binop): Likewise.
	* predict.c (estimate_probability): Likewise.
	* ra-debug.c (ra_print_rtx_2op, ra_print_rtx): Likewise.
	* recog.c (validate_replace_rtx_1, comparison_operator,
	offsettable_address_p, constrain_operands): Likewise.
	* reg-stack.c (swap_rtx_condition_1, subst_stack_regs_pat):
	Likewise.
	* regclass.c (scan_one_insn): Likewise.
	* regmove.c (stable_and_no_regs_but_for_p): Likewise.
	* regrename.c (kill_autoinc_value): Likewise.
	* reload.c (find_reusable_reload, find_reloads,
	reg_overlap_mentioned_for_reload_p): Likewise.
	* reload1.c (gen_reload, delete_address_reloads_1): Likewise.
	* rtl.c (copy_rtx): Likewise.
	* rtl.h (CONSTANT_P, INSN_P): Likewise.
	* rtlanal.c (commutative_operand_precedence): Likewise.
	* sched-deps.c (conditions_mutex_p): Likewise.
	* sched-rgn.c (is_cfg_nonregular): Likewise.
	* simplify-rtx.c (simplify_gen_binary,
	simplify_gen_relational, simplify_replace_rtx,
	simplify_unary_operation, simplify_binary_operation,
	simplify_ternary_operation, simplify_rtx): Likewise.
	* unroll.c (reg_dead_after_loop): Likewise.
	* config/alpha/alpha.c (alpha_swapped_comparison_operator,
	print_operand): Likewise.
	* config/arc/arc.c (proper_comparison_operator): Likewise.
	* config/arm/arm.c (arm_arm_address_cost, arm_select_cc_mode):
	Likewise.
	* config/avr/avr.c (_reg_unused_after): Likewise.
	* config/frv/frv.c (frv_ifcvt_modify_tests,
	frv_ifcvt_modify_insn, frv_pack_insn): Likewise.
	* config/i386/i386.c (ix86_comparison_operator,
	ix86_carry_flag_operator, fcmov_comparison_operator,
	arith_or_logical_operator, print_operand,
	ix86_expand_binary_operator, ix86_binary_operator_ok):
	Likewise.
	* config/i386/i386.md: Likewise.
	* config/ia64/ia64.c (not_postinc_memory_operand,
	ia64_print_operand, update_set_flags, errata_emit_nops):
	Likewise.
	* config/ia64/ia64.h (PREFERRED_RELOAD_CLASS,
	CONSTRAINT_OK_FOR_S): Likewise.
	* config/ip2k/ip2k.c (mdr_resequence_xy_yx,
	mdr_try_move_dp_reload, ip2k_check_can_adjust_stack_ref,
	ip2k_xexp_not_uses_reg_for_mem, ip2k_xexp_not_uses_reg_p,
	ip2k_composite_xexp_not_uses_reg_p, ip2k_unary_operator):
	Likewise.
	* config/iq2000/iq2000.c (cmp_op, symbolic_expression_p,
	eqne_comparison_operator, signed_comparison_operator):
	Likewise.
	* config/mips/mips.c (cmp_op, symbolic_expression_p):
	Likewise.
	* config/mmix/mmix (mmix_foldable_comparison_operator,
	mmix_comparison_operator): Likewise.
	* config/pa/pa.c (hppa_legitimize_address): Likewise.
	* config/rs6000/rs6000.c (stmw_operation,
	branch_comparison_operator, trap_comparison_operator,
	ccr_bit): Likewise.
	* config/rs6000/rs6000.h (SELECT_CC_MODE): Likewise.
	* config/s390/s390.c (s390_alc_comparison,
	s390_slb_comparison):L Likewise.
	* config/sh/sh.c (gen_block_redirect, reg_unused_after):
	Likewise.
	* config/sparc/sparc.c (eq_or_neq, normal_comp_operator,
	noov_compare_op, noov_compare64_op, v9_regcmp_op,
	emit_hard_tfmode_operation, reg_unused_after)
	* doc/md.texi, doc/rtl.texi: Likewise.

	* ra-debug.c: Add 2004 to list of copyright years.
	* unroll.c: Likewise.

	* combine.c (simplify_logical): Remove dummy test,
	(apply_distributive_law): Fix typo in comment.
	GET_CODE (x) == AND so x is a commutative binary op.
	* jump.c (delete_related_insns): simplify loop
	condition, move testing of RTX codes inside the loop.
	(rtx_renumbered_equal_p): do not use RTX_CODE.
	* rtl.c (rtx_class): Declare as enum rtx_class.
	* rtl.def (EQ, NE, UNEQ, LTGT, UNORDERED, ORDERED):
	Move to RTX_COMM_COMPARE class.
	(HIGH, SYMBOL_REF, LABEL_REF, CONST, CONST_INT, CONST_DOUBLE):
	Move to RTX_CONST_OBJ class.
	* rtl.h (enum rtx_class): New declaration,
	(RTX_OBJ_MASK, RTX_OBJ_RESULT, RTX_COMPARE_MASK,
	RTX_COMPARE_RESULT, RTX_ARITHMETIC_MASK, RTX_ARITHMETIC_RESULT,
	RTX_BINARY_MASK, RTX_BINARY_RESULT, RTX_COMMUTATIVE_MASK,
	RTX_COMMUTATIVE_RESULT, RTX_NON_COMMUTATIVE_RESULT,
	RTX_EXPR_FIRST, RTX_EXPR_LAST, UNARY_P, BINARY_P,
	ARITHMETIC_P, COMMUTATIVE_ARITHMETIC_P, COMPARISON_P,
	SWAPPABLE_OPERANDS_P, NON_COMMUTATIVE_P, COMMUTATIVE_P,
	OBJECT_P): New macros.
	* config/sparc/sparc.c (noov_compare_op): Remove register
	from parameter.

From-SVN: r78824
 2004-03-03 08:35:33 +00:00
Paolo Bonzini
9a5a17f3df combine.c (try_combine): Do not refer to is_replaced. 
2004-03-01  Paolo Bonzini  <bonzini@gnu.org>

        * combine.c (try_combine):  Do not refer to is_replaced.
        (gen_lowpart_for_combine):  Perverse subregs now have a
        more politically correct name.
        * cse.c (cse_insn): Likewise.
        * jump.c: Fix bogus reference to delete_insn.

From-SVN: r78698
 2004-03-01 09:42:10 +00:00
Dale Johannesen
b30e1617dc darwin.c (machopic_output_possible_stub_label): Remove. 
2004-02-27  Dale Johannesen  <dalej@apple.com>
        * config/darwin.c (machopic_output_possible_stub_label):  Remove.
        config/darwin-protos.h:  Ditto.
        config/darwin.h:  Remove call to it.
        * combine.c (distribute_notes): Do not place a REG_DEAD note
        when value is both set and used.

From-SVN: r78590
 2004-02-27 23:48:00 +00:00
Kazu Hirata
a110561799 c-decl.c, [...]: Fix comment typos and formatting. 
* c-decl.c, c-ppoutput.c, combine.c, cppfiles.c, dwarf2out.c,
	expr.c, fold-const.c, gcc.c, haifa-sched.c, loop-iv.c,
	params.def, read-rtl.c, rtl.c, rtlanal.c, toplev.c: Fix
	comment typos and formatting.  Follow spelling conventions.

From-SVN: r78555
 2004-02-27 07:09:43 +00:00
Kazu Hirata
bee07d3f4f combine.c (SHIFT_COUNT_TRUNCATED): Remove. 
* combine.c (SHIFT_COUNT_TRUNCATED): Remove.
	* defaults.h (SHIFT_COUNT_TRUNCATED): Provide the default.
	* expmed.c: Assume SHIFT_COUNT_TRUNCATED is always defined.
	* fold-const.c: Likewise.
	* simplify-rtx.c: Likewise.

From-SVN: r78230
 2004-02-21 18:41:48 +00:00
Alan Modra
da6fdad3bb combine.c (can_combine_p): Don't ignore SETs marked with REG_EH_REGION notes. 
* combine.c (can_combine_p): Don't ignore SETs marked with
	REG_EH_REGION notes.
	(try_combine): When attemting to fix unrecognized insns, don't
	split a PARALLEL that contains the original i2.

From-SVN: r78220
 2004-02-21 23:33:40 +10:30
Kazu Hirata
d220de0ed2 alias.c (OUTGOING_REGNO): Don't define the default. 
* alias.c (OUTGOING_REGNO): Don't define the default.
	* builtins.c (OUTGOING_REGNO): Likewise.
	(INCOMING_REGNO): Likewise.
	(apply_args_register_offset): Always use OUTGOING_REGNO.
	* combine.c (OUTGOING_REGNO): Likewise.
	* sibcall.c (OUTGOING_REGNO): Likewise.
	* defaults.h (INCOMING_REGNO): Provide the default.
	(OUTGOING_REGNO): Likewise.

From-SVN: r78203
 2004-02-21 00:39:05 +00:00
Alan Modra
8051c2eb7a re PR rtl-optimization/14119 (libjava Array_3 test fails at -O1) 
PR optimization/14119
	* combine.c (try_combine): When attemting to fix unrecognized insns,
	don't delete SETs marked with REG_EH_REGION notes.

From-SVN: r77991
 2004-02-18 08:51:00 +10:30
Ulrich Weigand
db33236e40 combine.c (simplify_if_then_else): Do not replace (if_then_else (ne reg 0) (0) (const_int)) by (reg) if... 
ChangeLog:

	* combine.c (simplify_if_then_else): Do not replace
	(if_then_else (ne reg 0) (0) (const_int)) by (reg) if the
	modes differ.

testsuite/ChangeLog:

	* gcc.dg/20040217-1.c: New test.

From-SVN: r77988
 2004-02-17 22:07:51 +00:00
Kazu Hirata
2fb00d7f2b combine.c (simplify_set): Use gen_rtx_fmt_e instead of gen_rtx. 
gcc/
	* combine.c (simplify_set): Use gen_rtx_fmt_e instead of
	gen_rtx.
	* emit-rtl.c (init_emit_once): Use gen_rtx_PC and gen_rtx_CC0
	instead of gen_rtx.
	* reload1.c (init_elim_table): Use gen_rtx_fmt_e instead of
	gen_rtx.
	* config/ns32k/ns32k.md (udivmodhi4): Use gen_rtx_IOR and
	gen_rtx_ASHIFT instead of gen_rtx.
	(udivmodqi4): Likewise.

	ada/
	* ada/trans.c (gigi): Use gen_rtx_SYMBOL_REF instead of
	gen_rtx.

	f/
	* com.c (ffecom_member_phase2_): Use gen_rtx_MEM instead of
	gen_rtx.

From-SVN: r77159
 2004-02-03 05:15:46 +00:00
Jan Hubicka
66fd46b6c6 alias.c (record_set): Use hard_regno_nregs. 
* alias.c (record_set): Use hard_regno_nregs.
	* bt-load.c (find_btr_reference, note_btr_set): Likewise.
	* builtins.c (apply_args_size): Likewise.
	* caller-save.c (setup_save_areas, save_call_clobbered_regs,
	mark_set_regs, add_stored_regs, mark_referenced_regs,
	insert_restore, insert_save, insert_one_insn): Likewise.
	* cfgcleanup.c: Include regs.h
	(mark_effect, mentions_nonequal_regs): Likewise.
	* cfgrtl.c (mark_killed_regs): Likewise
	* combine.c (update_table_tick, record_value_for_reg,
	record_dead_and_set_regs, get_last_value_validate, use_crosses_set_p,
	reg_dead_at_p_1, reg_dead_at_p, mark_used_regs_combine, move_deaths,
	reg_bitfield_target_p, distribute_notes): Likewise.
	* cse.c (mention_regs, insert, invalidate, invalidate_for_call,
	exp_equiv_p, cse_insn): Likewise.
	* cselib.c (cselib_lookup): Likewise.
	(cselib_invalidate_regno, cselib_record_set): Likewise.
	* df.c (df_ref_record): Likewise.
	* dwarf2out.c (reg_loc_descriptor, multiple_reg_loc_descriptor):
	Likewise.
	* flow.c (mark_reg, insn_dead_p, mark_set_1, mark_used_reg,
	count_or_remove_death_notes_bb): Likewise.
	* function.c (aggregate_value_p, keep_stack_depressed): Likewise.
	* gloval.c (global_alloc, find_reg, mark_reg_store, mark_reg_conflicts,
	mark_reg_death, set_preference, reg_becomes_live, reg_dies): Likewise.
	* integrate.c (mark_stores): Likewise.
	* jump.c (delete_prior_computation): Likewise.
	* lcm.c (reg_dies, reg_becomes_live): Likewise.
	* local-alloc.c (combine_regs, find_free_reg, post_mark_life): Likewise.
	* loop.c (LOOP_REGNO_NREGS): Likewise.
	* postreload.c (reload_combine, reload_combine_note_store,
	reload_combine_note_use, reload_cse_move2add, move2add_note_store): Likewise.
	* ra-colorize.c (combine, color_usable_p, get_free_reg,
	calculate_dont_begin, calculate_dont_begin, colorize_one_web,
	try_recolor_web, insert_coalesced_conflicts, check_colors,
	break_precolored_alias): Likewise.
	* ra-debug.c: Include regs.h
	(ra_print_rtx_object): Likewise.
	* ra-rewrite (choose_spill_colors): Likewise.
	(spill_same_color_p, update_spill_colors, spill_is_free): Likewise.
	* ra.c (init_ra): Likewise.
	* recog.c (reg_fits_class_p, peep2_reg_dead_p,
	peep2_find_free_register): Likewise.
	* reg-stack.c (subst_stack_regs_pat, convert_regs_exit): Likewise.
	* regclass.c (hard_regno_nregs): New array.
	(init_reg_modes_once): Initialize it.
	(choose_hard_reg_mode): Use it.
	(record_reg_classes): Likewise.
	* regmove.c (mark_flags_life_zones): Likewise.
	* regrename.c (note_sets, clear_dead_regs, regrename_optimize,
	scan_rtx_reg, dump_def_use_chain, kill_value, set_value_regno,
	copy_value, maybe_mode_change, find_oldest_value_reg,
	copyprop_hardreg_forward_1):
	* regs.h (hard_regno_nregs): Declare.
	* realod.c (reload_inner_reg_of_subreg): Use it.
	(push_reload, combine_reloads, find_dummy_reload,
	hard_reg_set_here_p, operands_match_p, decompose, find_reloads,
	refers_to_regno_for_reload_p, find_equiv_reg, regno_clobbered_p,
	reload_adjust_reg_for_mode): Likewise.
	* reload1.c (compute_use_by_pseudos, count_pseudo,
	count_spilled_pseudo, find_reg, find_reload_regs, mark_home_live,
	spill_hard_reg, forget_old_reloads_1, mark_reload_reg_in_use,
	clear_reload_reg_in_use, reload_reg_free_for_value_p, free_for_value_p
	allocate_reload_reg, choose_reload_regs, emit_reload_insns,
	delete_output_reload): Likewise.
	* resource.c (update_live_status, mark_referenced_resources,
	mark_set_resources, mark_target_live_regs): Likewise.
	* rtlanal.c:  Include regs.h
	(refers_to_regno_p, reg_overlap_mentioned_p, dead_or_set_p,
	dead_or_set_regno_p, find_regno_note, find_reg_fusage,
	subreg_regno_offset, subreg_offset_representable_p,
	hoist_test_store): Likewise.
	* sched-deps.c (sched_analyze_1, sched_analyze_2): Likewise.
	* sched-rgn.c (check_live_1, update_live_1): Likewise.
	* stmt.c: Include regs.h
	(decl_conflicts_with_clobbers_p): Likewise.
	* varasm.c (make_decl_rtl): Likewise.
	* Makefile.in (cfgcleanup.o, rtlanal.o, ra-debug.o): Add regs.h dependnecy.

From-SVN: r77088
 2004-02-02 00:17:18 +00:00
Paolo Bonzini
4de249d909 combine.c (cse_main): Set gen_lowpart to gen_lowpart_for_combine and restore it to... 
2004-01-31  Paolo Bonzini  <bonzini@gnu.org>

 	* combine.c (cse_main): Set gen_lowpart to gen_lowpart_for_combine
	and restore it to gen_lowpart_general on exit.
	(gen_lowpart_for_combine): Adjust all callers to go through
	gen_lowpart.
	* cse.c (cse_main): Set gen_lowpart to gen_lowpart_if_possible
	and restore it to gen_lowpart_general on exit.
	(gen_lowpart_if_possible): Adjust all callers to go through
	gen_lowpart.
	* emit-rtl.c (gen_lowpart_general): New name of gen_lowpart.
	(gen_lowpart): Declare as pointer to function, initialized to
	gen_lowpart_general.
	* rtl.h (gen_lowpart): Declare as pointer to function.

From-SVN: r77026
 2004-01-31 09:21:18 +00:00
Richard Kenner
39a44a4e39 combine.c (simplify_shift_const, case XOR): Be careful when commuting XOR with ASHIFTRT. 
* combine.c (simplify_shift_const, case XOR): Be careful when
	commuting XOR with ASHIFTRT.

From-SVN: r76965
 2004-01-30 10:36:11 -05:00
Jan Hubicka
e6d8312885 * combine.c (recog_for_combine): Avoid allocating unnecesary RTX. 
From-SVN: r76553
 2004-01-25 11:11:47 +00:00
Kazu Hirata
1f52178b3a c-common.h: Fix comment typos. 
* c-common.h: Fix comment typos.
	* c-decl.c: Likewise.
	* cgraphunit.c: Likewise.
	* combine.c: Likewise.
	* et-forest.c: Likewise.
	* flow.c: Likewise.
	* function.c: Likewise.
	* ifcvt.c: Likewise.
	* integrate.c: Likewise.
	* jump.c: Likewise.
	* postreload.c: Likewise.
	* varray.c: Likewise.

From-SVN: r76539
 2004-01-25 03:52:42 +00:00
Richard Henderson
a475bff7f8 combine.c (SHIFT_COUNT_TRUNCATED): Provide default value. 
* combine.c (SHIFT_COUNT_TRUNCATED): Provide default value.
        (simplify_comparison): Don't simplify (eq (zero_extract c 1 r) 0)
        if SHIFT_COUNT_TRUNCATED is set.

From-SVN: r76461
 2004-01-23 14:23:10 -08:00
Kazu Hirata
d9221e016b alias.c, [...]: Update copyright. 
* alias.c, basic-block.h, c-common.c, c-common.h,
	c-cppbuiltin.c, c-opts.c, c-pragma.c, c-pretty-print.c,
	calls.c, cfg.c, cfgcleanup.c, cfgrtl.c, cgraph.h, collect2.c,
	combine.c, cppcharset.c, cpphash.h, cppinit.c, cpplib.c,
	cpplib.h, cppmacro.c, crtstuff.c, cselib.c, cselib.h,
	defaults.h, df.c, dominance.c, et-forest.c, expmed.c, expr.c,
	expr.h, fix-header.c, function.h, gcc.c, gcse.c, genattrtab.c,
	genautomata.c, genconditions.c, genemit.c, genflags.c,
	gengtype.c, gengtype.h, genopinit.c, genrecog.c, gensupport.c,
	ggc-zone.c, graph.c, haifa-sched.c, input.h, integrate.c,
	langhooks-def.h, langhooks.c, langhooks.h, line-map.c,
	line-map.h, local-alloc.c, optabs.c, optabs.h, postreload.c,
	ra.h, recog.c, reg-stack.c, regmove.c, reload.c, reorg.c,
	rtl.c, sched-deps.c, sched-ebb.c, sdbout.c, system.h,
	target.h, targhooks.c, toplev.h, tree-inline.c, unwind-pe.h,
	unwind.h, varray.c, varray.h: Update copyright.

From-SVN: r76302
 2004-01-21 20:40:04 +00:00