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Author SHA1 Message Date
Fariborz Jahanian
b166bfd224 Check for valid use of subreg. 
Oked by Richard Henderson.

From-SVN: r104649
 2005-09-26 17:42:16 +00:00
Ian Lance Taylor
8f34bde689 combine.c (make_extraction): Avoid reference outside object. 
2005-08-26  Ian Lance Taylor  <ian@airs.com>

        * combine.c (make_extraction): Avoid reference outside object.

From-SVN: r103537
 2005-08-26 21:52:23 +00:00
Josh Conner
2d88fcc27d re PR rtl-optimization/23241 (Invalid code generated for comparison of uchar to 255) 
PR rtl-optimization/23241
	* combine.c (simplify_comparison): Fix error in determining
	whether to lift a subreg from comparison.

From-SVN: r102869
 2005-08-08 18:30:09 +00:00
Paul Brook
4164b2fb16 combine.c (can_change_dest_mode): New function. 
2005-08-03  Paul Brook  <paul@codesourcery.com>

	* combine.c (can_change_dest_mode): New function.
	(try_combine, simplify_set): Use it.

From-SVN: r102686
 2005-08-03 13:07:31 +00:00
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