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620 Commits

Author SHA1 Message Date
Alexandre Oliva
46382283d5 re PR target/20126 (Inlined memcmp makes one argument null on entry) 
gcc/ChangeLog:
PR target/20126
* loop.c (loop_givs_rescan): If replacement of DEST_ADDR failed,
set the original address pseudo to the correct value before the
original insn, if possible, and leave the insn alone, otherwise
create a new pseudo, set it and replace it in the insn.
* recog.c (validate_change_maybe_volatile): New.
* recog.h (validate_change_maybe_volatile): Declare.
gcc/testsuite/ChangeLog:
* gcc.dg/pr20126.c: New.

From-SVN: r97939
 2005-04-10 04:00:53 +00:00
Alexandre Oliva
9f05ff0a19 re PR rtl-optimization/20290 (Miscompilation on ppc/arm with -Os) 
gcc/ChangeLog:
PR rtl-optimization/20290
* loop.c (for_each_insn_in_loop): Don't assume the loop body runs
in every iteration if the entry point is the exit test.
gcc/testsuite/ChangeLog:
PR rtl-optimization/20290
* gcc.c-torture/execute/loop-ivopts-2.c: New.

From-SVN: r97441
 2005-04-02 16:53:44 +00:00
Nathan Sidwell
b5e624c6dc local-alloc.c (update_equiv_regs): Use gcc_assert, gcc_unreachable. 
* local-alloc.c (update_equiv_regs): Use gcc_assert, gcc_unreachable.
	(block_alloc, find_free_reg): Likewise.
	* loop-doloop.c (doloop_modify): Likewise.
	* loop-invariant.c (record_use): Likewise.
	* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze,
	get_iv_value, canon_condition, eliminate_implied_condition,
	eliminate_implied_condition, simplify_using_initial_values,
	shorten_into_mode, canonicalize_iv_subregs,
	iv_number_of_iterations): Likewise.
	* loop-unroll.c (expand_var_during_unrolling): Likewise.
	* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
	unswitch_loop): Likewise.
	* loop.c (INSN_LUID, loop_optimize, rtx_equal_for_loop_p,
	move_movables, replace_call_address, find_and_verify_loops,
	rtx_equal_for_prefetch_p, fold_rtx_mult_add, loop_iterations,
	record_giv, final_giv_value, general_induction_var,
	simplify_giv_expr, extension_within_bounds_p, try_copy_prop,
	loop_giv_dump): Likewise.

From-SVN: r97394
 2005-04-01 14:17:36 +00:00
Kazu Hirata
aabcd30904 cgraphunit.c, [...]: Fix comment typos. 
* cgraphunit.c, dbxout.c, flow.c, gcse.c, gimplify.c,
	lambda-code.c, loop.c, machmode.def, mips-tfile.c,
	modulo-sched.c, passes.c, postreload-gcse.c, tree-eh.c,
	tree-ssa-ccp.c, varasm.c, config/frv/frv.c, config/frv/frv.h,
	config/frv/frv.md, config/i386/i386.c, config/i386/i386.h,
	config/i386/i386.md, config/rs6000/predicates.md,
	config/rs6000/rs6000.c, config/s390/fixdfdi.h,
	config/s390/s390.c, config/stormy16/stormy16.c,
	config/stormy16/stormy16.md, config/vax/vax.md: Fix comment
	typos.

From-SVN: r97362
 2005-04-01 03:42:55 +00:00
Paolo Bonzini
c80a0f261b bb-reorder.c (fix_edges_for_rarely_executed_code): Remove last parameter to reg_scan. 
2005-01-15  Paolo Bonzini <bonzini@gnu.org>

	* bb-reorder.c (fix_edges_for_rarely_executed_code): Remove
	last parameter to reg_scan.
	* loop.c (loop_optimize): Likewise.
	* passes.c (rest_of_handle_tracer, rest_of_handle_if_conversion,
	rest_of_handle_web, rest_of_handle_cfg, rest_of_handle_jump_bypass,
	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_jump2): Likewise.
	* regclass.c (reg_scan): Likewise, for the declaration.
	* rtl.h (reg_scan): Likewise, for the prototype.

From-SVN: r93758
 2005-01-17 08:46:19 +00:00
Richard Sandiford
27916b83f5 re PR rtl-optimization/13299 (Unsafe treatment of extended givs) 
PR rtl-opt/13299
        * loop.c (get_monotonic_increment, biased_biv_fits_mode_p,
        biv_fits_mode_p, extension_within_bounds_p): New functions.
        (check_ext_dependent_givs): Use them.

From-SVN: r93000
 2005-01-06 11:10:56 -08:00
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
Roger Sayle
0ca5fbc0ca re PR rtl-optimization/12092 (ICE: Floating point exception) 
PR rtl-optimization/12092
	* loop.c (emit_prefetch_instructions): Do nothing if PREFETCH_BLOCK
	is zero.

	* gcc.dg/pr12092-1.c: New test case.

Co-Authored-By: Andrew Pinski <pinskia@physics.uc.edu>
Co-Authored-By: James E Wilson <wilson@specifixinc.com>

From-SVN: r92794
 2005-01-02 00:15:01 +00:00
Eric Botcazou
9f70d2bc3a re PR rtl-optimization/16968 (loop optimizer miscompilation) 
PR rtl-optimization/16968
	* loop.c (scan_loop): Stop scanning the loop for movable
	insns as soon as an optimization barrier is encountered.

From-SVN: r92348
 2004-12-18 07:55:42 +00:00
Roger Sayle
58b42e19f7 re PR middle-end/18293 (Redundant copy operation introduced by expand) 
PR middle-end/18293
	* expmed.c (EXACT_POWER_OF_2_OR_ZERO_P): Move definition earlier.
	(expand_mult): Special case powers of two to avoid synth_mult.
	* loop.c (product_cheap_p): Handle case where expand_mult does
	require/generate any instructions (i.e. multiplication by zero).

From-SVN: r91851
 2004-12-08 02:15:36 +00:00
Nathan Sidwell
3cd8c58a83 bitmap.c (bitmap_print): Make bitno unsigned. 
* bitmap.c (bitmap_print): Make bitno unsigned.
	* bt-load.c (clear_btr_from_live_range,
	btr_def_live_range): Likewise.
	* caller-save.c (save_call_clobbered_regs): Likewise.
	* cfganal.c (compute_dominance_frontiers_1): Likewise.
	* cfgcleanup.c (thread_jump): Likewise.
	* cfgrtl.c (safe_insert_insn_on_edge): Likewise.
	* conflict.c (conflict_graph_compute): Likewise.
	* ddg.c (add_deps_for_use): Likewise.
	* df.c (df_refs_update): Likewise.
	* except.c (remove_eh_handler): Likewise.
	* flow.c (verify_local_live_at_start, update_life_info,
	initialize_uninitialized_subregs, propagate_one_insn,
	free_propagate_block_info, propagate_block, find_use_as_address,
	reg_set_to_hard_reg_set): Likewise.
	* gcse.c (clear_modify_mem_tables): Likewise.
	* global.c (global_conflicts, build_insn_chain): Likewise.
	* ifcvt.c (dead_or_predicable): Likewise.
	* local-alloc.c (update_equiv_regs): Likewise.
	* loop.c (load_mems): Likewise.
	* ra-build.c (livethrough_conflicts_bb, conflicts_between_webs):
	Likewise.
	* ra-rewrite.c (reloads_to_loads, rewrite_program2, actual_spill):
	Likewise.
	* reload1.c (order_regs_for_reload, finish_spills): Likewise.
	* sched-deps.c (sched_analyze_insn, free_deps): Likewise.
	* sched-rgn.c (propagate_deps
	* tree-cfg.c (tree_purge_all_dead_eh_edges): Likewise.
	* tree-dfa.c (dump_dfa_stats
	tree-into-ssa.c (compute_global_livein, insert_phi_nodes,
	insert_phi_nodes_for, debug_def_blocks_r, invalidate_name_tags):
	Likewise.
	* tree-outof-ssa.c (coalesce_ssa_name, coalesce_vars,
	free_temp_expr_table, find_replaceable_exprs): Likewise.
	* tree-sra.c (scan_function, scalarize_parms): Likewise.
	* tree-ssa-alias.c (init_alias_info,
	compute_points_to_and_addr_escape,
	compute_flow_sensitive_aliasing, maybe_create_global_var): Likewise.
	* tree-ssa-dce.c (mark_control_dependent_edges_necessary): Likewise.
	* tree-ssa-live.c (new_tree_live_info, live_worklist,
	calculate_live_on_entry, calculate_live_on_exit, compare_pairs,
	sort_coalesce_list, build_tree_conflict_graph, dump_live_info
	tree-ssa-loop-manip.c (add_exit_phis_var): Likewise.
	tree-ssa-operands.c (get_asm_expr_operands, add_call_clobber_ops,
	add_call_read_ops): Likewise.
	* tree-ssa-pre.c (bitmap_print_value_set, insert_aux): Likewise.
	* tree-ssa-live.h (num_var_partitions): Return unsigned.

From-SVN: r90053
 2004-11-04 08:41:16 +00:00
Steven Bosscher
75473b0257 cfgloop.h (struct loop): Update comment. 
* cfgloop.h (struct loop): Update comment.
	* cse.c (cse_main): Remove obsolete comment.

	* expr.h (gen_cond_trap): Move prototype under functions provided
	by optabs.c.
	(canonicalize_condition, get_condition): Move to...
	* rtl.h (canonicalize_condition, get_condition): ...here.
	(branch_target_load_optimize): Add comment that this function is
	in bt-load.c.
	* loop.c (canonicalize_condition, get_condition): Move to...
	* rtlanal.c (canonicalize_condition, get_condition): ...here.
	* sched-deps.c (get_condition): Rename to sched_get_condition.
	(add_dependence): Update this caller.

From-SVN: r89995
 2004-11-02 17:59:46 +00:00
Kazu Hirata
a204196782 basic-block.h (reg_set_iterator): New. 
* basic-block.h (reg_set_iterator): New.
	(EXECUTE_IF_SET_IN_REG_SET): Make it iterator style.
	(EXECUTE_IF_AND_COMPL_IN_REG_SET): Likewise.
	(EXECUTE_IF_AND_IN_REG_SET): Likewise.
	* caller-save.c (save_call_clobbered_regs): Adjust to the new
	style.
	* cfgcleanup.c (thread_jump): Likewise.
	* cfgrtl.c (safe_insert_insn_on_edge): Likewise.
	* conflict.c (conflict_graph_compute): Likewise.
	* flow.c (verify_local_live_at_start, update_life_info,
	initialize_uninitialized_subregs, propagate_one_insn,
	init_propagate_block_info, free_propagate_block_info,
	propagate_block, dump_regset): Likewise.
	* global.c (global_conflicts): Likewise.
	* graph.c (start_bb): Likewise.
	* local-alloc.c (update_equiv_regs): Likewise.
	* loop.c (load_mems): Likewise.
	* reload1.c (compute_use_by_pseudos, order_regs_for_reload,
	find_reg, finish_spills): Likewise.
	* resource.c (mark_target_live_regs): Likewise.
	* sched-deps.c (sched_analyze_insn): Likewise.
	* sched-rgn.c (sched-rgn.c): Likewise.
	* config/frv/frv.c (frv_ifcvt_modify_tests): Likewise.

From-SVN: r89226
 2004-10-18 15:11:31 +00:00
Kazu Hirata
454ff5cbf0 alias.c, [...]: Fix comment typos. 
* alias.c, crtstuff.c, dbxout.c, domwalk.c, domwalk.h, gcc.c,
	gcse.c, global.c, lambda-code.c, loop.c, mips-tdump.c,
	optabs.h, predict.c, reg-stack.c, regclass.c, sched-rgn.c,
	tree-optimize.c, tree-ssa-dom.c, tree-ssa-forwprop.c,
	tree-ssa-operands.c, tree-ssa-phiopt.c,
	tree-ssa-threadupdate.c: Fix comment typos.

From-SVN: r87707
 2004-09-18 19:47:10 +00:00
Zdenek Dvorak
c94583fe55 unroll.c: Removed. 
* unroll.c: Removed.
	* loop.h: Removed.
	* Makefile.in (LOOP_H, unroll.o): Removed.
	(toplev.o, passes.o, stmt.o, integrate.o, loop.o): Remove LOOP_H
	dependency.
	* alias.c (init_alias_analysis): Remove flag_old_unroll_loops
	reference.
	* cfgloop.h (LOOP_PREFETCH, loop_optimize): Moved from loop.h.
	* common.opt (fold-unroll-loops, fold-unroll-all-loops): Removed.
	* loop.c: Do not include loop.h.
	(LOOP_INFO, LOOP_MOVABLES, LOOP_REGS, LOOP_IVS, INSN_LUID,
	REGNO_FIRST_LUID, REGNO_LAST_LUID, enum g_types, struct induction,
	struct iv_class, enum iv_mode, struct iv, REG_IV_TYPE, REG_IV_INFO,
	REG_IV_CLASS, struct loop_ivs, struct loop_mem_info, struct loop_reg,
	struct loop_regs, struct loop_movables, struct loop_info): Moved
	from loop.h.
	(back_branch_in_range_p, fold_rtx_mult_add, biv_total_increment,
	reg_dead_after_loop, final_biv_value, loop_find_equiv_value,
	find_common_reg_term, loop_iterations, final_giv_value): Moved
	from unroll.c.
	(uid_luid, uid_loop, max_uid_for_loop, max_reg_before_loop,
	loop_dump_stream, for_each_insn_in_loop, express_from,
	extend_value_for_giv, loop_iv_add_mult_emit_before,
	loop_iv_add_mult_sink, loop_iv_add_mult_hoist,
	loop_insn_first_p, get_condition_for_loop,
	loop_insn_emit_before, loop_insn_hoist,
	loop_insn_sink): Made static.
	(loop_invariant_p): Made static.  Removed flag_old_unroll_loops
	reference.
	(strength_reduce): Do not call unroller.
	(record_giv): Do not initialize unrolled field.
	(prescan_loop): Do not set loop_info->preconditioned.
	* passes.c: Do not include loop.h.
	(rest_of_handle_loop_optimize): Do not call unroller.
	* predict.c: Do not include loop.h.
	* rtl.h (NOTE_PRECONDITIONED): Removed.
	* stmt.c: Do not include loop.h.
	* toplev.c: Do not include loop.h.
	(process_options): Do not handle flag_old_unroll_loops.

	* doc/invoke.texi (fold-unroll-loops, fold-unroll-all-loops):
	Documentation removed.
	* doc/passes.texi (unroll.c, loop.h): Documentation removed.

From-SVN: r87485
 2004-09-14 07:43:08 +00:00
Toon Moene
a924fe3411 common.opt: Remove flags -fmove-all-movables and -freduce-all-givs. 
2004-09-12  Toon Moene  <toon@moene.indiv.nluug.nl>

	* common.opt: Remove flags -fmove-all-movables and
	-freduce-all-givs.
	* loop-invariant.c (find_invariants_to_move):
	Remove all uses of flag_move_all_movables.
	* loop.c (move_movables): Remove all uses of
	flag_move_all_movables.
	(strength_reduce): Remove all uses of
	flag_reduce_all_givs.
	* doc/invoke.texi: Remove documentation of flags
	-fremove-all-movables and -freduce-all-givs.

From-SVN: r87386
 2004-09-12 05:51:02 +00:00
Nathan Sidwell
8127d0e073 Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org> 
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
	and gcc_unreachable instead of abort.
	* lambda.h (lambda_vector_min_nz): Likewise.
	* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
	lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
	lhd_gimplify_expr): Likewise.
	* lcm.c (optimize_mode_switching): Likewise.
	* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
	Likewise.
	* loop-doloop.c (doloop_modify): Likewise.
	* loop-invariant.c (record_use): Likewise.
	* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
	canon_condition, simplify_using_condition,
	simplify_using_initial_values, shorten_into_mode,
	canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
	* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
	unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
	peel_loop_simple, unroll_loop_stupid): Likewise.
	* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
	unswitch_loop): Likewise.
	* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
	move_movables, replace_call_address, find_and_verify_loops,
	rtx_equal_for_prefetch_p, record_giv, general_induction_var,
	simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
	loop_giv_dump): Likewise.
	* loop.h (INSN_LUID): Likewise.
	* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
	sms_schedule, check_nodes_order): Likewise.
	* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
	expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
	expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
	emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
	prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
	have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
	Likewise.
	* opts.c (common_handle_option): Likewise.
	* params.c (set_param_value): Likewise.
	* passes.c (open_dump_file, rest_of_handle_final): Likewise.
	* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
	reg_set_between_after_reload_p, reg_used_between_after_reload_p,
	get_avail_load_store_reg, eliminate_partially_redundant_load):
	Likewise.
	* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
	Likewise.
	* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
	propagate_freq, expensive_function_p): Likewise.
	* pretty-print.c (pp_base_format_text)
	* profile.c (instrument_edges, instrument_values,
	compute_branch_probabilities, branch_prob, union_groups,
	end_branch_prob, tree_register_profile_hooks): Likewise.

From-SVN: r87290
 2004-09-10 11:02:26 +00:00
Giovanni Bajo
1c43d3ca81 lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert and gcc_unreachable instead of abort. 
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
	and gcc_unreachable instead of abort.
	* lambda.h (lambda_vector_min_nz): Likewise.
	* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
	lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
	lhd_gimplify_expr): Likewise.
	* lcm.c (optimize_mode_switching): Likewise.
	* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
	Likewise.
	* loop-doloop.c (doloop_modify): Likewise.
	* loop-invariant.c (record_use): Likewise.
	* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
	canon_condition, simplify_using_condition,
	simplify_using_initial_values, shorten_into_mode,
	canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
	* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
	unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
	peel_loop_simple, unroll_loop_stupid): Likewise.
	* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
	unswitch_loop): Likewise.
	* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
	move_movables, replace_call_address, find_and_verify_loops,
	rtx_equal_for_prefetch_p, record_giv, general_induction_var,
	simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
	loop_giv_dump): Likewise.
	* loop.h (INSN_LUID): Likewise.
	* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
	sms_schedule, check_nodes_order): Likewise.
	* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
	expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
	expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
	emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
	prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
	have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
	Likewise.
	* opts.c (common_handle_option): Likewise.
	* params.c (set_param_value): Likewise.
	* passes.c (open_dump_file, rest_of_handle_final): Likewise.
	* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
	reg_set_between_after_reload_p, reg_used_between_after_reload_p,
	get_avail_load_store_reg, eliminate_partially_redundant_load):
	Likewise.
	* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
	Likewise.
	* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
	propagate_freq, expensive_function_p): Likewise.
	* pretty-print.c (pp_base_format_text)
	* profile.c (instrument_edges, instrument_values,
	compute_branch_probabilities, branch_prob, union_groups,
	end_branch_prob, tree_register_profile_hooks): Likewise.

From-SVN: r87285
 2004-09-10 09:22:28 +00:00
Jan Hubicka
8679c6494f loop.c (loop_dump_aux): Do not print RTL when not available. 
* loop.c (loop_dump_aux): Do not print RTL when not available.
	* tree-ssa-loop-ivopts.c (add_standard_iv_candidates): Do not use
	frontend specific type nodes.
	(produce_memory_decl_rtl): Break out from ...
	(prepare_decl_rtl): ... here.  Handle ADDR_EXPR correctly.
	(get_computation_at): Avoid random tree sharing.
	(tree_ssa_iv_optimize): Verify tree sharing; dump loops.

From-SVN: r87123
 2004-09-06 18:38:27 +00:00
Paolo Bonzini
8b63d0e5c8 cfglayout.c (duplicate_insn_chain): Remove references to NOTE_INSN_LOOP_VTOP and NOTE_INSN_LOOP_CONT. 
2004-04-25  Paolo Bonzini  <bonzini@gnu.org>

	* cfglayout.c (duplicate_insn_chain): Remove references to
	NOTE_INSN_LOOP_VTOP and NOTE_INSN_LOOP_CONT.
	* cfgloop.h (struct loop): Remove fields vtop, cont and cont_dominator.
	* cfgrtl.c (rtl_delete_block): Remove handling of NOTE_INSN_LOOP_CONT.
	* final.c (final_scan_insn): Remove references to NOTE_INSN_LOOP_VTOP
	and NOTE_INSN_LOOP_CONT.
	* insn-notes.def (NOTE_INSN_LOOP_VTOP, NOTE_INSN_LOOP_CONT): Remove.
	* jump.c (squeeze_notes): Remove references to NOTE_INSN_LOOP_VTOP
	and NOTE_INSN_LOOP_CONT.
	* loop.c (scan_loops, find_and_verify_loops, for_each_insn_in_loop,
	check_dbra_loop, loop_dump_aux): Remove references to removed notes
	and fields.
	* reorg.c (mostly_true_jump): Do not rely on NOTE_INSN_LOOP_VTOPs.
	* unroll.c (unroll_loop, copy_loop_body, loop_iterations): Remove
	references to removed notes and fields.
	(subtract_reg_term, ujump_to_loop_cont): Remove.

From-SVN: r86542
 2004-08-25 08:20:11 +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
Richard Sandiford
45d09c02e5 expr.h (canonicalize_condition, [...]): Add an int argument. 
* expr.h (canonicalize_condition, get_condition): Add an int argument.
	* gcse.c (fis_get_condition): Reimplement using get_condition, leaving
	it to check whether the condition is still valid at the jump insn.
	* ifcvt.c (noce_get_condition): Likewise.
	(noce_get_alt_condition): Update call to canonicalize_condition.
	* loop-iv.c (simplify_using_initial_values): Update call to
	get_condition.  Remove FIXME.
	(check_simple_exit): Update call to get_condition.
	* loop-unswitch.c (may_unswitch_on): Likewise.
	* loop.c (check_dbra_loop): Likewise.
	(canonicalize_condition, get_condition): Add an argument to say whether
	the condition must still be valid at INSN.
	(get_condition_for_loop): Update call to get_condition.  Require that
	the condition be valid at INSN.
	* predict.c (estimate_probability): Update call to get_condition.
	Remove unused earliest parameter.
	(expected_value_to_br_prob): Update call to canonicalize_condition.

From-SVN: r85218
 2004-07-27 07:27:12 +00:00
Jeff Law
9270f90074 loop.c (check_insn_for_givs): Restore check for code labels that was accidentally deleted by a recent checkin. 
* loop.c (check_insn_for_givs): Restore check for code labels that was
        accidentally deleted by a recent checkin.

From-SVN: r84753
 2004-07-15 08:55:15 -06:00
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
60e20b9079 re PR rtl-optimization/16380 (Use of uninitialised register after dbra conversion) 
PR rtl-optimization/16380
	* loop.c (check_dbra_loop): Sink comparison instructions if they
	do something other than set cc0.

From-SVN: r84161
 2004-07-06 18:27:35 +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
Philip Blundell
6ef30017a0 re PR tree-optimization/15089 (local register variable with a specified register is bad) 
PR wrong-code/15089
	* loop.c (scan_loop): Do not move user-specified register
	assignments.

From-SVN: r83684
 2004-06-25 21:48:38 +00:00
Dale Johannesen
d85428e234 loop.c (loop_givs_reduce): Avoid miscompilation of loops entered at bottom. 
2004-06-16  Dale Johannesen  <dalej@apple.com>

        * loop.c (loop_givs_reduce): Avoid miscompilation of
        loops entered at bottom.

From-SVN: r83248
 2004-06-16 17:13:34 +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
Zdenek Dvorak
689ba89dd8 doloop.c: Removed. 
* doloop.c: Removed.
	* loop-doloop.c: New file.
	* Makefile.in (doloop.o): Remove.
	(loop-doloop.o): New.
	* cfgloop.h (get_loop_level, doloop_optimize_loops): Declare.
	* cfgloopanal.c (get_loop_level): New function.
	* loop-iv.c (iv_number_of_iterations): Handle case when loop
	is leaved immediatelly.
	* loop.c (strength_reduce): Do not call doloop optimization.
	* loop.h (LOOP_BCT): Removed.
	* passes.c (rest_of_handle_loop_optimize): Do not use LOOP_BCT.
	(rest_of_handle_loop2): Call doloop_optimize_loops.
	(rest_of_compilation): Test for optimizations moved to
	rest_of_handle_loop2.

From-SVN: r79625
 2004-03-18 16:42:34 +00:00
Paolo Bonzini
86caf04d48 cse.c (cse_end_of_basic_block): Make static. 
2004-02-18  Paolo Bonzini <bonzini@gnu.org>

	* cse.c (cse_end_of_basic_block): Make static.
	* local-alloc.c (function_invariant_p): Move to
	reload1.c.
	* loop.c (libcall_other_reg, record_excess_regs):
	Make static.
	* reload1.c (function_invariant_p): Moved here
	from local-alloc.c, made static.
	* rtl.h (cse_end_of_basic_block, function_invariant_p,
	libcall_other_reg, record_excess_regs): Remove
	declarations.

From-SVN: r78960
 2004-03-05 10:17:40 +00:00
Jan Hubicka
463301c30e cfgcleanup.c (thread_jump): Update call of cselib_init. 
* cfgcleanup.c (thread_jump): Update call of cselib_init.
	* cselib.c (cselib_record_memory): New static variable.
	(cselib_lookup_mem, cselib_record_set, cselib_record_sets):
	Give up on memories when asked for.
	(cselib_init): Accept new argument.
	* cselib.h (cselib_init): Update prototype.
	* gcse.c (local_cprop_pass): Update call of cselib_init.
	* loop.c (load_mems): Update call of cselib_init.
	* postreload.c (reload_cse_regs_1): Update call of cselib_init.
	* sched-deps.c (sched_analyze): Update call of cselib_init.

From-SVN: r78917
 2004-03-04 16:28:50 +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
Kazu Hirata
a3b182a787 * loop.c (all_sets_invariant_p): Remove. 
From-SVN: r78090
 2004-02-19 10:53:13 +00:00
Eric Botcazou
45f9877a51 loop.c (check_dbra_loop): Use gen_int_mode instead of GEN_INT for start_value when... 
* loop.c (check_dbra_loop): Use gen_int_mode instead of GEN_INT
	for start_value when it is directly moved into reg, and factorize
	the retrieval of GET_MODE (reg).

From-SVN: r77803
 2004-02-14 14:43:21 +00:00
Ulrich Weigand
1f0db3dfca loop.c (force_movables): Transitively increase the priorities of all insns forces by an insn... 
* loop.c (force_movables): Transitively increase the priorities of
	all insns forces by an insn, not just the first one.

From-SVN: r77419
 2004-02-06 20:10:35 +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
Zdenek Dvorak
c8b6fae388 re PR rtl-optimization/12440 (gcc 3.3.1 on i386 linux 2.4.22 crashes during compilation of quicktime4linux 2.0.0) 
PR optimization/12440
	* loop.c: Include ggc.h.
	(loop_optimize): Run garbage collector between optimization of loops.
	* Makefile.in (loop.o): Add GGC_H dependency.

From-SVN: r76213
 2004-01-20 16:55:56 +00:00
Kazu Hirata
e0a21ab90e c-common.h: Fix comment formatting. 
* c-common.h: Fix comment formatting.
	* c-cppbuiltin.c: Likewise.
	* c-pragma.c: Likewise.
	* calls.c: Likewise.
	* collect2.c: Likewise.
	* cppcharset.c: Likewise.
	* cpptrad.c: Likewise.
	* dbxout.c: Likewise.
	* defaults.h: Likewise.
	* dwarf2out.c: Likewise.
	* fold-const.c: Likewise.
	* genautomata.c: Likewise.
	* genconditions.c: Likewise.
	* genflags.c: Likewise.
	* gengtype.c: Likewise.
	* integrate.c: Likewise.
	* loop.c: Likewise.
	* predict.c: Likewise.
	* sdbout.c: Likewise.

From-SVN: r75957
 2004-01-16 01:44:06 +00:00
Steven Bosscher
616f6d8469 system.h: Poison PROMOTED_MODE 
* system.h: Poison PROMOTED_MODE
	* integrate.c (expand_inline_function): Don't mention the
	PROMOTED_MODE.
	* loop.c (update_giv_derive): Same.
	* tree.h (DECL_RTL): Same.

From-SVN: r75878
 2004-01-14 20:05:29 +00:00
Jan Hubicka
432f982f5c re PR rtl-optimization/12826 (Optimizer removes reference through volatile pointer) 
PR opt/12826
	* loop.c (insert_loop_mem): Preffer VOLATILE memory references to be
	stored.

	PR opt/12863
	* cfgcleanup.c (label_is_jump_target_p): Move to...
	* rtlanal.c (label_is_jump_target_p): ... here.
	* cfgrtl.c (cfg_layout_redirect_edge_and_branch):  Fix redirecting of fallthru
	edges unified with branch edges.

From-SVN: r75733
 2004-01-12 16:32:12 +00:00
Kazu Hirata
5d3cc25206 alias.c: Fix comment typos. 
* alias.c: Fix comment typos.
	* builtins.c: Likewise.
	* cfg.c: Likewise.
	* df.c: Likewise.
	* dominance.c: Likewise.
	* dwarf2out.c: Likewise.
	* emit-rtl.c: Likewise.
	* expr.c: Likewise.
	* final.c: Likewise.
	* fold-const.c: Likewise.
	* gcse.c: Likewise.
	* genattrtab.c: Likewise.
	* genrecog.c: Likewise.
	* gensupport.c: Likewise.
	* ggc-zone.c: Likewise.
	* integrate.c: Likewise.
	* local-alloc.c: Likewise.
	* loop.c: Likewise.
	* recog.c: Likewise.
	* regmove.c: Likewise.
	* reg-stack.c: Likewise.
	* reorg.c: Likewise.
	* rtlanal.c: Likewise.
	* rtl.h: Likewise.
	* sched-ebb.c: Likewise.
	* simplify-rtx.c: Likewise.
	* toplev.c: Likewise.
	* varasm.c: Likewise.

From-SVN: r75475
 2004-01-06 16:51:21 +00:00
Andrew Pinski
9d85830f7e loop.c (loop_optimize): Free all loops_info's mems. 
2004-01-02  Andrew Pinski  <pinskia@physics.uc.edu>

        * loop.c (loop_optimize): Free all loops_info's mems.

From-SVN: r75339
 2004-01-02 15:14:41 -08:00
Dale Johannesen
aaf3ce3e55 re PR rtl-optimization/12828 (-floop-optimize is unstable on PowerPC (float to int conversion problem)) 
2003-12-21  Dale Johannesen  <dalej@apple.com>

        PR optimization/12828
        * loop.c:  Add find_regs_nested to look inside CLOBBER(MEM).
        (scan_loop):  Call it.
        * regclass.c (reg_scan_mark_regs):  Look inside CLOBBER(MEM).

From-SVN: r74935
 2003-12-22 18:23:15 +00:00
Kazu Hirata
6614fd40d2 alias.c: Fix comment formatting. 
* alias.c: Fix comment formatting.
	* alloc-pool.c: Likewise.
	* bitmap.c: Likewise.
	* bitmap.h: Likewise.
	* bt-load.c: Likewise.
	* c-common.c: Likewise.
	* c-common.h: Likewise.
	* c-decl.c: Likewise.
	* c-opts.c: Likewise.
	* c-pretty-print.c: Likewise.
	* caller-save.c: Likewise.
	* cfghooks.h: Likewise.
	* cgraph.c: Likewise.
	* collect2.c: Likewise.
	* cppfiles.c: Likewise.
	* cpplib.h: Likewise.
	* dwarf2out.c: Likewise.
	* dwarfout.c: Likewise.
	* emit-rtl.c: Likewise.
	* final.c: Likewise.
	* function.c: Likewise.
	* gcov.c: Likewise.
	* gcse.c: Likewise.
	* genemit.c: Likewise.
	* ggc.h: Likewise.
	* haifa-sched.c: Likewise.
	* ifcvt.c: Likewise.
	* libgcc2.h: Likewise.
	* loop.c: Likewise.
	* predict.h: Likewise.
	* unwind-libunwind.c: Likewise.
	* varasm.c: Likewise.

From-SVN: r74907
 2003-12-21 14:08:35 +00:00
Ulrich Weigand
cebf212fa5 loop.c (move_movables): Handle combination of m->consec... 
ChangeLog:
	* loop.c (move_movables): Handle combination of m->consec,
	m->move_insn_first, and m->insert_temp all nonzero correctly.
testsuite/ChangeLog:
	* gcc.dg/20031216-1.c: New test.

From-SVN: r74778
 2003-12-18 12:15:37 +00:00
J"orn Rennecke
69f38ab9fd reload.c (reg_overlap_mentioned_for_reload_p): When looking at a PLUS in X... 
* reload.c (reg_overlap_mentioned_for_reload_p):
	When looking at a PLUS in X, avoid spuriously returning nonzero
	when IN is a REG or another simple PLUS, or a MEM containing one.

	* loop.c (loop_invariant_p): Amend comment about where new registers
	might come from.

From-SVN: r74638
 2003-12-15 17:42:43 +00:00
Roger Sayle
77fec971c1 re PR rtl-optimization/13037 ([gcse-lm] g77 generates incorrect code) 
PR optimization/13037
	* loop.c (update_giv_derive): Ignore redundant sets of a biv when
	calculating how to derive a giv from a biv.

	* g77.f-torture/execute/13037.f: New test case.

From-SVN: r74572
 2003-12-12 14:31:18 +00:00
Steven Bosscher
a813c11120 basic-block.h (BLOCK_HEAD, BLOCK_END): Remove. 
2003-12-11  Steven Bosscher  <steven@gcc.gnu.org>

	* basic-block.h (BLOCK_HEAD, BLOCK_END): Remove.
	(BLOCK_HEAD_TREE, BLOCK_END_TREE): Remove.
	(basic_block_def): Rename `head' to `head_' and `end' to `end_'.
	(BB_HEAD, BB_END): New accessor macros for the `head_' and `end_'
	fields of a basic block.
	* bb-reorder.c, bt-load.c, caller-save.c, cfg.c, cfganal.c,
	cfgbuild.c, cfgcleanup.c, cfglayout.c, cfgloop.c, cfgloopanal.c,
	cfgloopmanip.c, cfgrtl.c, combine.c, conflict.c, df.c, emit-rtl.c,
	final.c, flow.c, function.c, gcse.c, global.c, graph.c,
	haifa-sched.c, ifcvt.c, lcm.c, local-alloc.c, loop-unswitch.c,
	loop.c, postreload.c, predict.c, profile.c, ra-build.c, ra-debug.c,
	ra-rewrite.c, ra.c, recog.c, reg-stack.c, regclass.c, regmove.c,
	regrename.c, reload1.c, resource.c, sched-ebb.c, sched-rgn.c,
	sibcall.c, tracer.c, config/frv/frv.c, config/i386/i386.c,
	config/ia64/ia64.c: Use the BB_HEAD and BB_END macros instead of
	accessing the `head' and `end' fields of a basic block directly.

	* gengtype.c: Add missing piece from earlier patch.  Dunno what
	I was thinking...

From-SVN: r74520
 2003-12-11 00:20:51 +00:00
Eric Botcazou
fd25e9579d re PR rtl-optimization/13318 (ICE: floating point exception in the loop optimizer) 
PR optimization/13318
	* loop.c (express_from): Protect integer division from overflow.

From-SVN: r74387
 2003-12-07 12:57:13 +00:00