From dd277d48c6583b9ac3a360761cf4484f021c9f0b Mon Sep 17 00:00:00 2001 From: rguenth Date: Fri, 3 Apr 2009 10:24:28 +0000 Subject: 2009-04-03 Richard Guenther PR middle-end/13146 PR tree-optimization/23940 PR tree-optimization/33237 PR middle-end/33974 PR middle-end/34093 PR tree-optimization/36201 PR tree-optimization/36230 PR tree-optimization/38049 PR tree-optimization/38207 PR tree-optimization/38230 PR tree-optimization/38301 PR tree-optimization/38585 PR middle-end/38895 PR tree-optimization/38985 PR tree-optimization/39299 * tree-ssa-structalias.h: Remove. * tree-ssa-operands.h (NULL_USE_OPERAND_P): Make of type use_operand_p. (NULL_DEF_OPERAND_P): Make of type def_operand_p. (struct vuse_element_d): Remove. (struct vuse_vec_d): Likewise. (VUSE_VECT_NUM_ELEM, VUSE_VECT_ELEMENT_NC, VUSE_ELEMENT_PTR_NC, VUSE_ELEMENT_VAR_NC, VUSE_VECT_ELEMENT, VUSE_ELEMENT_PTR, SET_VUSE_VECT_ELEMENT, SET_VUSE_ELEMENT_VAR, SET_VUSE_ELEMENT_PTR, VUSE_ELEMENT_VAR): Likewise. (struct voptype_d): Likewise. (NUM_VOP_FREE_BUCKETS): Likewise. (struct ssa_operands): Remove vop_free_buckets and mpt_table fields. (struct stmt_operands_d): Remove. (VUSE_OP_PTR, VUSE_OP, SET_VUSE_OP, VUSE_NUM, VUSE_VECT, VDEF_RESULT_PTR, VDEF_RESULT, VDEF_OP_PTR, VDEF_OP, SET_VDEF_OP, VDEF_NUM, VDEF_VECT): Likewise. (copy_virtual_operands): Remove. (operand_build_cmp): Likewise. (create_ssa_artificial_load_stmt): Likewise. (enum ssa_op_iter_type): Remove ssa_op_iter_vdef. (struct ssa_operand_iterator_d): Remove vuses, vdefs, mayusesm vuse_index and mayuse_index members. Pack and move done and iter_type members to the front. (SSA_OP_VMAYUSE): Remove. (SSA_OP_VIRTUAL_USES): Adjust. (FOR_EACH_SSA_VDEF_OPERAND): Remove. (unlink_stmt_vdef): Declare. (add_to_addressable_set): Remove. * tree-vrp.c (stmt_interesting_for_vrp): Adjust. (vrp_visit_stmt): Likewise. * doc/tree-ssa.texi (Alias analysis): Update. * doc/invoke.texi (max-aliased-vops): Remove docs. (avg-aliased-vops): Likewise. * tree-into-ssa.c (syms_to_rename): Remove. (need_to_update_vops_p): Likewise. (need_to_initialize_update_ssa_p): Rename to ... (update_ssa_initialized_fn): ... this. Track function we are initialized for. (symbol_marked_for_renaming): Simplify. (add_new_name_mapping): Do not set need_to_update_vops_p. (dump_currdefs): Use SYMS_TO_RENAME. (rewrite_update_stmt): Always walk all uses/defs. (dump_update_ssa): Adjust. (init_update_ssa): Take function argument. Track what we are initialized for. (delete_update_ssa): Reset SYMS_TO_RENAME and update_ssa_initialized_fn. (create_new_def_for): Initialize for cfun, assert we are initialized for cfun. (mark_sym_for_renaming): Simplify. (mark_set_for_renaming): Do not initialize update-ssa. (need_ssa_update_p): Simplify. Take function argument. (name_mappings_registered_p): Assert we ask for the correct function. (name_registered_for_update_p): Likewise. (ssa_names_to_replace): Likewise. (release_ssa_name_after_update_ssa): Likewise. (update_ssa): Likewise. Use SYMS_TO_RENAME. (dump_decl_set): Do not print a newline. (debug_decl_set): Do it here. (dump_update_ssa): And here. * tree-ssa-loop-im.c (move_computations): Adjust. (movement_possibility): Likewise. (determine_max_movement): Likewise. (gather_mem_refs_stmt): Likewise. * tree-dump.c (dequeue_and_dump): Do not handle SYMBOL_MEMORY_TAG or NAME_MEMORY_TAG. * tree-complex.c (update_all_vops): Remove. (expand_complex_move): Adjust. * tree-ssa-loop-niter.c (chain_of_csts_start): Use NULL_TREE. Simplify test for memory referencing statement. Exclude non-invariant ADDR_EXPRs. * tree-pretty-print.c (dump_generic_node): Do not handle memory tags. * tree-loop-distribution.c (generate_memset_zero): Adjust. (rdg_flag_uses): Likewise. * tree-tailcall.c (suitable_for_tail_opt_p): Remove memory-tag related code. (tree_optimize_tail_calls_1): Also split the edge from the entry block if we have degenerate PHI nodes in the first basic block. * tree.c (init_ttree): Remove memory-tag related code. (tree_code_size): Likewise. (tree_node_structure): Likewise. (build7_stat): Re-write to be build6_stat. * tree.h (MTAG_P, TREE_MEMORY_TAG_CHECK, TMR_TAG): Remove. (SSA_VAR_P): Adjust. (struct tree_memory_tag): Remove. (struct tree_memory_partition_tag): Likewise. (union tree_node): Adjust. (build7): Re-write to be build6. * tree-pass.h (pass_reset_cc_flags): Remove. (TODO_update_address_taken): New flag. (pass_simple_dse): Remove. * ipa-cp.c (ipcp_update_callgraph): Update SSA form. * params.h (MAX_ALIASED_VOPS): Remove. (AVG_ALIASED_VOPS): Likewise. * omp-low.c (expand_omp_taskreg): Update SSA form. * tree-ssa-dse.c (dse_optimize_stmt): Properly query if the rhs aliases the lhs in a copy stmt. * tree-ssa-dse.c (struct address_walk_data): Remove. (memory_ssa_name_same): Likewise. (memory_address_same): Likewise. (get_kill_of_stmt_lhs): Likewise. (dse_possible_dead_store_p): Simplify, use the oracle. Handle unused stores. Look through PHI nodes into post-dominated regions. (dse_optimize_stmt): Simplify. Properly remove stores. (tree_ssa_dse): Compute dominators. (execute_simple_dse): Remove. (pass_simple_dse): Likewise. * ipa-reference.c (scan_stmt_for_static_refs): Open-code gimple_loaded_syms and gimple_stored_syms computation. * toplev.c (dump_memory_report): Dump alias and pta stats. * tree-ssa-sccvn.c (vn_reference_compute_hash): Simplify. (vn_reference_eq): Likewise. (vuses_to_vec, copy_vuses_from_stmt, vdefs_to_vec, copy_vdefs_from_stmt, shared_lookup_vops, shared_vuses_from_stmt, valueize_vuses): Remove. (get_def_ref_stmt_vuses): Simplify. Rename to ... (get_def_ref_stmt_vuse): ... this. (vn_reference_lookup_2): New function. (vn_reference_lookup_pieces): Use walk_non_aliased_vuses for walking equivalent vuses. Simplify. (vn_reference_lookup): Likewise. (vn_reference_insert): Likewise. (vn_reference_insert_pieces): Likewise. (visit_reference_op_call): Simplify. (visit_reference_op_load): Likewise. (visit_reference_op_store): Likewise. (init_scc_vn): Remove shared_lookup_vuses initialization. (free_scc_vn): Remove shared_lookup_vuses freeing. (sort_vuses, sort_vuses_heap): Remove. (get_ref_from_reference_ops): Export. * tree-ssa-sccvn.h (struct vn_reference_s): Replace vuses vector with single vuse pointer. (vn_reference_lookup_pieces, vn_reference_lookup, vn_reference_insert, vn_reference_insert_pieces): Adjust prototypes. (shared_vuses_from_stmt): Remove. (get_ref_from_reference_ops): Declare. * tree-ssa-loop-manip.c (slpeel_can_duplicate_loop_p): Adjust. * tree-ssa-copyrename.c (copy_rename_partition_coalesce): Remove memory-tag related code. * tree-ssa-ccp.c (get_symbol_constant_value): Remove memory-tag code. (likely_value): Add comment, skip static-chain of call statements. (surely_varying_stmt_p): Adjust. (gimplify_and_update_call_from_tree): Likewise. (execute_fold_all_builtins): Do not rebuild alias info. (gimplify_and_update_call_from_tree): Properly update VOPs. * tree-ssa-loop-ivopts.c (get_ref_tag): Remove. (copy_ref_info): Remove memory-tag related code. * tree-call-cdce.c (tree_call_cdce): Rename the VOP. * ipa-pure-const.c (check_decl): Remove memory-tag related code. (check_stmt): Open-code gimple_loaded_syms and gimple_stored_syms computation. * tree-ssa-dom.c (gimple_p): Remove typedef. (eliminate_redundant_computations): Adjust. (record_equivalences_from_stmt): Likewise. (avail_expr_hash): Likewise. (avail_expr_eq): Likewise. * tree-ssa-propagate.c (update_call_from_tree): Properly update VOPs. (stmt_makes_single_load): Likewise. (stmt_makes_single_store): Likewise. * tree-ssa-alias.c: Rewrite completely. (debug_memory_partitions, dump_mem_ref_stats, debug_mem_ref_stats, debug_mem_sym_stats, dump_mem_sym_stats_for_var, debug_all_mem_sym_stats, debug_mp_info, update_mem_sym_stats_from_stmt, delete_mem_ref_stats, create_tag_raw, dump_points_to_info, dump_may_aliases_for, debug_may_aliases_for, new_type_alias): Remove public functions. (pass_reset_cc_flags): Remove. (pass_build_alias): Move ... * tree-ssa-structalias.c (pass_build_alias): ... here. * tree-ssa-alias.c (may_be_aliased): Move ... * tree-flow-inline.h (may_be_aliased): ... here. tree-ssa-alias.c (struct count_ptr_d, count_ptr_derefs, count_uses_and_derefs): Move ... * gimple.c: ... here. * gimple.h (count_uses_and_derefs): Declare. * tree-ssa-alias.c (dump_alias_stats, ptr_deref_may_alias_global_p, ptr_deref_may_alias_decl_p, ptr_derefs_may_alias_p, same_type_for_tbaa, nonaliasing_component_refs_p, decl_refs_may_alias_p, indirect_ref_may_alias_decl_p, indirect_refs_may_alias_p, ref_maybe_used_by_call_p, ref_maybe_used_by_stmt_p, call_may_clobber_ref_p, stmt_may_clobber_ref_p, maybe_skip_until, get_continuation_for_phi, walk_non_aliased_vuses, walk_aliased_vdefs): New functions. * tree-dfa.c (refs_may_alias_p): Move ... * tree-ssa-alias.c (refs_may_alias_p): ... here. Extend. * tree-ssa-alias.h: New file. * tree-ssa-sink.c (is_hidden_global_store): Adjust. (statement_sink_location): Likewise. * opts.c (decode_options): Do not adjust max-aliased-vops or avg-aliased-vops values. * timevar.def (TV_TREE_MAY_ALIAS): Remove. (TV_CALL_CLOBBER): Likewise. (TV_FLOW_SENSITIVE): Likewise. (TV_FLOW_INSENSITIVE): Likewise. (TV_MEMORY_PARTITIONING): Likewise. (TV_ALIAS_STMT_WALK): New timevar. * tree-ssa-loop-ivcanon.c (empty_loop_p): Adjust. * tree-ssa-address.c (create_mem_ref_raw): Use build6. (get_address_description): Remove memory-tag related code. * tree-ssa-ifcombine.c (bb_no_side_effects_p): Adjust. * treestruct.def (TS_MEMORY_TAG, TS_MEMORY_PARTITION_TAG): Remove. * tree-eh.c (cleanup_empty_eh): Do not leave stale SSA_NAMEs and immediate uses in statements. Document. * gimple-pretty-print.c (dump_gimple_mem_ops): Adjust. (dump_symbols): Remove. (dump_gimple_mem_ops): Do not dump loaded or stored syms. * alias.c (get_deref_alias_set): New function split out from ... (get_alias_set): ... here. * alias.h (get_deref_alias_set): Declare. * tree-vect-data-refs.c (vect_create_data_ref_ptr): Remove unused type parameter. Remove restrict pointer handling. Create a ref-all pointer in case type-based alias sets do not conflict. (vect_analyze_data_refs): Remove SMT related code. * tree-vect-stmts.c (vectorizable_store): Re-instantiate TBAA assert. (vectorizable_load): Likewise. * tree-data-ref.h (struct dr_alias): Remove symbol_tag field. (DR_SYMBOL_TAG, DR_VOPS): Remove. * tree-data-ref.c (dr_may_alias_p): Use the alias-oracle. Ignore vops and SMTs. (dr_analyze_alias): Likewise.. (free_data_ref): Likewise. (create_data_ref): Likewise. (analyze_all_data_dependences): Likewise. (get_references_in_stmt): Adjust. * tree-flow-inline.h (gimple_aliases_computed_p, gimple_addressable_vars, gimple_call_clobbered_vars, gimple_call_used_vars, gimple_global_var, may_aliases, memory_partition, factoring_name_p, mark_call_clobbered, clear_call_clobbered, compare_ssa_operands_equal, symbol_mem_tag, set_symbol_mem_tag, gimple_mem_ref_stats): Remove. (gimple_vop): New function. (op_iter_next_use): Remove vuses and mayuses cases. (op_iter_next_def): Remove vdefs case. (op_iter_next_tree): Remove vuses, mayuses and vdefs cases. (clear_and_done_ssa_iter): Do not set removed fields. (op_iter_init): Likewise. Skip vuse and/or vdef if requested. Assert we are not iterating over vuses or vdefs if not also iterating over uses or defs. (op_iter_init_use): Likewise. (op_iter_init_def): Likewise. (op_iter_next_vdef): Remove. (op_iter_next_mustdef): Likewise. (op_iter_init_vdef): Likewise. (compare_ssa_operands_equal): Likewise. (link_use_stmts_after): Handle vuse operand. (is_call_used): Use is_call_clobbered. (is_call_clobbered): Global variables are always call clobbered, query the call-clobbers bitmap. (mark_call_clobbered): Ignore global variables. (clear_call_clobbered): Likewise. * tree-ssa-coalesce.c (create_outofssa_var_map): Adjust virtual operands sanity check. * tree.def (NAME_MEMORY_TAG, SYMBOL_MEMORY_TAG, MEMORY_PARTITION_TAG): Remove. (TARGET_MEM_REF): Remove TMR_TAG operand. * tree-dfa.c (add_referenced_var): Initialize call-clobber state. Remove call-clobber related code. (remove_referenced_var): Likewise. Do not clear mpt or symbol_mem_tag. (dump_variable): Do not dump SMTs, memory stats, may-aliases or partitions or escape reason. (get_single_def_stmt, get_single_def_stmt_from_phi, get_single_def_stmt_with_phi): Remove. (dump_referenced_vars): Tidy. (get_ref_base_and_extent): Allow bare decls. (collect_dfa_stats): Adjust. * graphite.c (rename_variables_in_stmt): Adjust. (graphite_copy_stmts_from_block): Likewise. (translate_clast): Likewise. * tree-ssa-pre.c (struct bb_bitmap_sets): Add expr_dies bitmap. (EXPR_DIES): New. (translate_vuse_through_block): Use the oracle. (phi_translate_1): Adjust. (value_dies_in_block_x): Use the oracle. Cache the outcome in EXPR_DIES. (valid_in_sets): Check if the VUSE for a REFERENCE is available. (eliminate): Do not remove stmts during elimination, instead queue and remove them afterwards. (do_pre): Do not rebuild alias info. (pass_pre): Run TODO_rebuild_alias before PRE. * tree-ssa-live.c (remove_unused_locals): Remove memory-tag code. * tree-sra.c (sra_walk_function): Use gimple_references_memory_p. (mark_all_v_defs_stmt): Remove. (mark_all_v_defs_seq): Adjust. (sra_replace): Likewise. (scalarize_use): Likewise. (scalarize_copy): Likewise. (scalarize_init): Likewise. (scalarize_ldst): Likewise. (todoflags): Remove. (tree_sra): Do not rebuild alias info. (tree_sra_early): Adjust. (pass_sra): Run TODO_update_address_taken before SRA. * tree-predcom.c (set_alias_info): Remove. (prepare_initializers_chain): Do not call it. (mark_virtual_ops_for_renaming): Adjust. (mark_virtual_ops_for_renaming_list): Remove. (initialize_root_vars): Adjust. (initialize_root_vars_lm): Likewise. (prepare_initializers_chain): Likewise. * tree-ssa-copy.c (may_propagate_copy): Remove memory-tag related code. (may_propagate_copy_into_stmt): Likewise. (merge_alias_info): Do nothing for now. (propagate_tree_value_into_stmt): Adjust. (stmt_may_generate_copy): Likewise. * tree-ssa-forwprop.c (tidy_after_forward_propagate_addr): Do not mark symbols for renaming. (forward_propagate_addr_expr): Match up push/pop_stmt_changes with the same statement, make sure to update the new pointed-to one. * tree-ssa-dce.c (eliminate_unnecessary_stmts): Do not copy call statements, do not mark symbols for renaming. (mark_operand_necessary): Dump something. (ref_may_be_aliased): New function. (mark_aliased_reaching_defs_necessary_1): New helper function. (mark_aliased_reaching_defs_necessary): Likewise. (mark_all_reaching_defs_necessary_1): Likewise. (mark_all_reaching_defs_necessary): Likewise. (propagate_necessity): Do not process virtual PHIs. For non-aliased loads mark all reaching definitions as necessary. For aliased loads and stores mark the immediate dominating aliased clobbers as necessary. (visited): New global static. (perform_tree_ssa_dce): Free visited bitmap after propagating necessity. (remove_dead_phis): Perform simple dead virtual PHI removal. (remove_dead_stmt): Properly unlink virtual operands when removing stores. (eliminate_unnecessary_stmts): Schedule PHI removal after stmt removal. * tree-ssa-ter.c (is_replaceable_p): Adjust. (process_replaceable): Likewise. (find_replaceable_in_bb): Likewise. * tree-ssa.c (verify_ssa_name): Verify all VOPs are based on the single gimple vop. (verify_flow_insensitive_alias_info): Remove. (verify_flow_sensitive_alias_info): Likewise. (verify_call_clobbering): Likewise. (verify_memory_partitions): Likewise. (verify_alias_info): Likewise. (verify_ssa): Adjust.. (execute_update_addresses_taken): Export. Update SSA manually. Optimize only when optimizing. Use a local bitmap. (pass_update_address_taken): Remove TODO_update_ssa, add TODO_dump_func. (pass_update_address_taken): Just use TODO_update_address_taken. (init_tree_ssa): Do not initialize addressable_vars. (verify_ssa): Verify new VUSE / VDEF properties. Verify that all stmts definitions have the stmt as SSA_NAME_DEF_STMT. Do not call verify_alias_info. (delete_tree_ssa): Clear the VUSE, VDEF operands. Do not free the loaded and stored syms bitmaps. Reset the escaped and callused solutions. Do not free addressable_vars. Remove memory-tag related code. (warn_uninitialized_var): Aliases are always available. * tree-ssa-loop-prefetch.c (gather_memory_references): Adjust. * lambda-code.c (can_put_in_inner_loop): Adjust. (can_put_after_inner_loop): Likewise. (perfect_nestify): Likewise. * tree-vect-stmts.c (vect_stmt_relevant_p): Adjust. (vect_gen_widened_results_half): Remove CALL_EXPR handling. (vectorizable_conversion): Do not mark symbols for renaming. * tree-inline.c (remap_gimple_stmt): Clear VUSE/VDEF. (expand_call_inline): Unlink the calls virtual operands before replacing it. (tree_function_versioning): Do not call update_ssa if we are not updating clones. Simplify. * tree-ssa-phiprop.c (phivn_valid_p): Adjust. (propagate_with_phi): Likewise.. * tree-outof-ssa.c (create_temp): Remove memory tag and call clobber code. Assert we are not aliased or global. * tree-flow.h: Include tree-ssa-alias.h (enum escape_type): Remove. (struct mem_sym_stats_d): Likewise. (struct mem_ref_stats_d): Likewise. (struct gimple_df): Add vop member. Remove global_var, call_clobbered_vars, call_used_vars, addressable_vars, aliases_compted_p and mem_ref_stats members. Add syms_to_rename, escaped and callused members. (struct ptr_info_def): Remove all members, add points-to solution member pt. (struct var_ann_d): Remove in_vuse_list, in_vdef_list, call_clobbered, escape_mask, mpt and symbol_mem_tag members. * Makefile.in (TREE_FLOW_H): Add tree-ssa-alias.h. (tree-ssa-structalias.o): Remove tree-ssa-structalias.h. (tree-ssa-alias.o): Likewise. (toplev.o): Add tree-ssa-alias.h (GTFILES): Remove tree-ssa-structalias.h, add tree-ssa-alias.h. * gimple.c (gimple_set_bb): Fix off-by-one error. (is_gimple_reg): Do not handle memory tags. (gimple_copy): Also copy virtual operands. Delay updating the statement. Do not reset loaded and stored syms. (gimple_set_stored_syms): Remove. (gimple_set_loaded_syms): Likewise. (gimple_call_copy_skip_args): Copy the virtual operands and mark the new statement modified. * tree-ssa-structalias.c (may_alias_p): Remove. (set_uids_in_ptset): Take the alias set to prune with as parameter. Fold in the alias test of may_alias_p. (compute_points_to_sets): Compute whether a ptr is dereferenced in a local sbitmap. (process_constraint): Deal with &ANYTHING on the lhs, reject all other ADDRESSOF constraints on the lhs. (get_constraint_for_component_ref): Assert that we don't get ADDRESSOF constraints from the base of the reference. Properly generate UNKNOWN_OFFSET for DEREF if needed. (struct variable_info): Remove collapsed_to member. (get_varinfo_fc): Remove. (new_var_info): Do not set collapsed_to. (dump_constraint): Do not follow cycles. (dump_constraint_graph): Likewise. (build_pred_graph): Likewise. (build_succ_graph): Likewise. (rewrite_constraints): Likewise. (do_simple_structure_copy): Remove. (do_rhs_deref_structure_copy): Remove. (do_lhs_deref_structure_copy): Remove. (collapse_rest_of_var): Remove. (do_structure_copy): Re-implement. (pta_stats): New global variable. (dump_pta_stats): New function. (struct constraint_expr): Make offset signed. (UNKNOWN_OFFSET): Define special value. (dump_constraint): Dump UNKNOWN_OFFSET as UNKNOWN. (solution_set_expand): New helper function split out from ... (do_sd_constraint): ... here. (solution_set_add): Handle UNKNOWN_OFFSET. Handle negative offsets. (do_ds_constraint): Likewise. (do_sd_constraint): Likewise. Do not special-case ESCAPED = *ESCAPED and CALLUSED = *CALLUSED. (set_union_with_increment): Make inc argument signed. (type_safe): Remove. (get_constraint_for_ptr_offset): Handle unknown and negative constant offsets. (first_vi_for_offset): Handle offsets before start. Bail out early for offsets beyond the variable extent. (first_or_preceding_vi_for_offset): New function. (init_base_vars): Add ESCAPED = ESCAPED + UNKNOWN_OFFSET constraint. Together with ESCAPED = *ESCAPED this properly computes reachability. (find_what_var_points_to): New function. (find_what_p_points_to): Implement in terms of find_what_var_points_to. (pt_solution_reset, pt_solution_empty_p, pt_solution_includes_global, pt_solution_includes_1, pt_solution_includes, pt_solutions_intersect_1, pt_solutions_intersect): New functions. (compute_call_used_vars): Remove. (compute_may_aliases): New main entry into PTA computation. * gimple.h (gimple_p): New typedef. (struct gimple_statement_base): Remove references_memory_p. (struct gimple_statement_with_memory_ops_base): Remove vdef_ops, vuse_ops, stores and loads members. Add vdef and vuse members. (gimple_vuse_ops, gimple_set_vuse_ops, gimple_vdef_ops, gimple_set_vdef_ops, gimple_loaded_syms, gimple_stored_syms, gimple_set_references_memory): Remove. (gimple_vuse_op, gimple_vdef_op, gimple_vuse, gimple_vdef, gimple_vuse_ptr, gimple_vdef_ptri, gimple_set_vuse, gimple_set_vdef): New functions. * tree-cfg.c (move_block_to_fn): Fix off-by-one error. (verify_expr): Allow RESULT_DECL. (gimple_duplicate_bb): Do not copy virtual operands. (gimple_duplicate_sese_region): Adjust. (gimple_duplicate_sese_tail): Likewise. (mark_virtual_ops_in_region): Remove. (move_sese_region_to_fn): Do not call it. * passes.c (init_optimization_passes): Remove pass_reset_cc_flags and pass_simple_dse. (execute_function_todo): Handle TODO_update_address_taken, call execute_update_addresses_taken for TODO_rebuild_alias. (execute_todo): Adjust. (execute_one_pass): Init dump files early. * ipa-struct-reorg.c (finalize_var_creation): Do not mark vars call-clobbered. (create_general_new_stmt): Clear vops. * tree-ssa-reassoc.c (get_rank): Adjust. * tree-vect-slp.c (vect_create_mask_and_perm): Do not mark symbols for renaming. * params.def (PARAM_MAX_ALIASED_VOPS): Remove. (PARAM_AVG_ALIASED_VOPS): Likewise. * tree-ssanames.c (init_ssanames): Allocate SYMS_TO_RENAME. (duplicate_ssa_name_ptr_info): No need to copy the shared bitmaps. * tree-ssa-operands.c: Simplify for new virtual operand representation. (operand_build_cmp, copy_virtual_operands, create_ssa_artificial_load_stmt, add_to_addressable_set, gimple_add_to_addresses_taken): Remove public functions. (unlink_stmt_vdef): New function. * gcc.dg/pr19633-1.c: Adjust. * gcc.dg/torture/pta-callused-1.c: Likewise. * gcc.dg/torture/pr39074-2.c: Likewise. * gcc.dg/torture/pr39074.c: Likewise. * gcc.dg/torture/pta-ptrarith-3.c: New testcase. * gcc.dg/torture/pr30375.c: Adjust. * gcc.dg/torture/pr33563.c: Likewise. * gcc.dg/torture/pr33870.c: Likewise. * gcc.dg/torture/pr33560.c: Likewise. * gcc.dg/torture/pta-structcopy-1.c: New testcase. * gcc.dg/torture/ssa-pta-fn-1.c: Likewise. * gcc.dg/tree-ssa/alias-15.c: Remove. * gcc.dg/tree-ssa/ssa-dce-4.c: New testcase. * gcc.dg/tree-ssa/pr26421.c: Adjust. * gcc.dg/tree-ssa/ssa-fre-10.c: XFAIL. * gcc.dg/tree-ssa/ssa-dce-5.c: New testcase. * gcc.dg/tree-ssa/pr23382.c: Adjust. * gcc.dg/tree-ssa/ssa-fre-20.c: New testcase. * gcc.dg/tree-ssa/alias-16.c: Adjust. * gcc.dg/tree-ssa/ssa-fre-13.c: Likewise. * gcc.dg/tree-ssa/ssa-fre-14.c: Likewise. * gcc.dg/tree-ssa/alias-18.c: Likewise. * gcc.dg/tree-ssa/ssa-fre-15.c: Likewise. * gcc.dg/tree-ssa/ssa-lim-3.c: Likewise. * gcc.dg/tree-ssa/alias-19.c: Likewise. * gcc.dg/tree-ssa/pta-ptrarith-1.c: New testcase. * gcc.dg/tree-ssa/pr13146.c: Likewise. * gcc.dg/tree-ssa/ssa-pre-23.c: Likewise. * gcc.dg/tree-ssa/pta-ptrarith-2.c: Likewise. * gcc.dg/tree-ssa/ssa-fre-18.c: Likewise. * gcc.dg/tree-ssa/ssa-pre-24.c: New XFAILed testcase. * gcc.dg/tree-ssa/ssa-fre-19.c: New testcase. * gcc.dg/tree-ssa/alias-20.c: Likewise. * gcc.dg/tree-ssa/ssa-dse-12.c: Likewise. * gcc.dg/tree-ssa/pr38895.c: Likewise. * gcc.dg/uninit-B.c: XFAIL. * gcc.dg/vect/no-vfa-vect-43.c: Adjust. * gcc.dg/uninit-pr19430.c: XFAIL. * g++.dg/tree-ssa/pr13146.C: New testcase. * g++.dg/opt/pr36187.C: Adjust. * g++.dg/torture/20090329-1.C: New testcase. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@145494 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/tree-dfa.c | 334 +++------------------------------------------------------ 1 file changed, 12 insertions(+), 322 deletions(-) (limited to 'gcc/tree-dfa.c') diff --git a/gcc/tree-dfa.c b/gcc/tree-dfa.c index 082ac082bf3..d50b7ddb362 100644 --- a/gcc/tree-dfa.c +++ b/gcc/tree-dfa.c @@ -254,8 +254,9 @@ dump_referenced_vars (FILE *file) { fprintf (file, "Variable: "); dump_variable (file, var); - fprintf (file, "\n"); } + + fprintf (file, "\n"); } @@ -297,12 +298,6 @@ dump_variable (FILE *file, tree var) fprintf (file, ", "); print_generic_expr (file, TREE_TYPE (var), dump_flags); - if (ann && ann->symbol_mem_tag) - { - fprintf (file, ", symbol memory tag: "); - print_generic_expr (file, ann->symbol_mem_tag, dump_flags); - } - if (TREE_ADDRESSABLE (var)) fprintf (file, ", is addressable"); @@ -312,36 +307,10 @@ dump_variable (FILE *file, tree var) if (TREE_THIS_VOLATILE (var)) fprintf (file, ", is volatile"); - dump_mem_sym_stats_for_var (file, var); - if (is_call_clobbered (var)) - { - const char *s = ""; - var_ann_t va = var_ann (var); - unsigned int escape_mask = va->escape_mask; - - fprintf (file, ", call clobbered"); - fprintf (file, " ("); - if (escape_mask & ESCAPE_STORED_IN_GLOBAL) - { fprintf (file, "%sstored in global", s); s = ", "; } - if (escape_mask & ESCAPE_TO_ASM) - { fprintf (file, "%sgoes through ASM", s); s = ", "; } - if (escape_mask & ESCAPE_TO_CALL) - { fprintf (file, "%spassed to call", s); s = ", "; } - if (escape_mask & ESCAPE_BAD_CAST) - { fprintf (file, "%sbad cast", s); s = ", "; } - if (escape_mask & ESCAPE_TO_RETURN) - { fprintf (file, "%sreturned from func", s); s = ", "; } - if (escape_mask & ESCAPE_TO_PURE_CONST) - { fprintf (file, "%spassed to pure/const", s); s = ", "; } - if (escape_mask & ESCAPE_IS_GLOBAL) - { fprintf (file, "%sis global var", s); s = ", "; } - if (escape_mask & ESCAPE_IS_PARM) - { fprintf (file, "%sis incoming pointer", s); s = ", "; } - if (escape_mask & ESCAPE_UNKNOWN) - { fprintf (file, "%sunknown escape", s); s = ", "; } - fprintf (file, ")"); - } + fprintf (file, ", call clobbered"); + else if (is_call_used (var)) + fprintf (file, ", call used"); if (ann->noalias_state == NO_ALIAS) fprintf (file, ", NO_ALIAS (does not alias other NO_ALIAS symbols)"); @@ -357,27 +326,6 @@ dump_variable (FILE *file, tree var) print_generic_expr (file, gimple_default_def (cfun, var), dump_flags); } - if (MTAG_P (var) && may_aliases (var)) - { - fprintf (file, ", may aliases: "); - dump_may_aliases_for (file, var); - } - - if (!is_gimple_reg (var)) - { - if (memory_partition (var)) - { - fprintf (file, ", belongs to partition: "); - print_generic_expr (file, memory_partition (var), dump_flags); - } - - if (TREE_CODE (var) == MEMORY_PARTITION_TAG) - { - fprintf (file, ", partition symbols: "); - dump_decl_set (file, MPT_SYMBOLS (var)); - } - } - fprintf (file, "\n"); } @@ -516,8 +464,8 @@ collect_dfa_stats (struct dfa_stats_d *dfa_stats_p ATTRIBUTE_UNUSED) gimple stmt = gsi_stmt (si); dfa_stats_p->num_defs += NUM_SSA_OPERANDS (stmt, SSA_OP_DEF); dfa_stats_p->num_uses += NUM_SSA_OPERANDS (stmt, SSA_OP_USE); - dfa_stats_p->num_vdefs += NUM_SSA_OPERANDS (stmt, SSA_OP_VDEF); - dfa_stats_p->num_vuses += NUM_SSA_OPERANDS (stmt, SSA_OP_VUSE); + dfa_stats_p->num_vdefs += gimple_vdef (stmt) ? 1 : 0; + dfa_stats_p->num_vuses += gimple_vuse (stmt) ? 1 : 0; } } } @@ -650,13 +598,6 @@ add_referenced_var (tree var) /* Insert VAR into the referenced_vars has table if it isn't present. */ if (referenced_var_check_and_insert (var)) { - /* This is the first time we found this variable, annotate it with - attributes that are intrinsic to the variable. */ - - /* Tag's don't have DECL_INITIAL. */ - if (MTAG_P (var)) - return true; - /* Scan DECL_INITIAL for pointer variables as they may contain address arithmetic referencing the address of other variables. @@ -684,22 +625,12 @@ remove_referenced_var (tree var) void **loc; unsigned int uid = DECL_UID (var); - clear_call_clobbered (var); - bitmap_clear_bit (gimple_call_used_vars (cfun), uid); - if ((v_ann = var_ann (var))) + /* Preserve var_anns of globals. */ + if (!is_global_var (var) + && (v_ann = var_ann (var))) { - /* Preserve var_anns of globals, but clear their alias info. */ - if (MTAG_P (var) - || (!TREE_STATIC (var) && !DECL_EXTERNAL (var))) - { - ggc_free (v_ann); - var->base.ann = NULL; - } - else - { - v_ann->mpt = NULL_TREE; - v_ann->symbol_mem_tag = NULL_TREE; - } + ggc_free (v_ann); + var->base.ann = NULL; } gcc_assert (DECL_P (var)); in.uid = uid; @@ -803,8 +734,6 @@ get_ref_base_and_extent (tree exp, HOST_WIDE_INT *poffset, bool seen_variable_array_ref = false; bool seen_union = false; - gcc_assert (!SSA_VAR_P (exp)); - /* First get the final access size from just the outermost expression. */ if (TREE_CODE (exp) == COMPONENT_REF) size_tree = DECL_SIZE (TREE_OPERAND (exp, 1)); @@ -984,242 +913,3 @@ stmt_references_abnormal_ssa_name (gimple stmt) return false; } -/* Return true, if the two memory references REF1 and REF2 may alias. */ - -bool -refs_may_alias_p (tree ref1, tree ref2) -{ - tree base1, base2; - HOST_WIDE_INT offset1 = 0, offset2 = 0; - HOST_WIDE_INT size1 = -1, size2 = -1; - HOST_WIDE_INT max_size1 = -1, max_size2 = -1; - bool strict_aliasing_applies; - - gcc_assert ((SSA_VAR_P (ref1) - || handled_component_p (ref1) - || INDIRECT_REF_P (ref1) - || TREE_CODE (ref1) == TARGET_MEM_REF) - && (SSA_VAR_P (ref2) - || handled_component_p (ref2) - || INDIRECT_REF_P (ref2) - || TREE_CODE (ref2) == TARGET_MEM_REF)); - - /* Defer to TBAA if possible. */ - if (flag_strict_aliasing - && !alias_sets_conflict_p (get_alias_set (ref1), get_alias_set (ref2))) - return false; - - /* Decompose the references into their base objects and the access. */ - base1 = ref1; - if (handled_component_p (ref1)) - base1 = get_ref_base_and_extent (ref1, &offset1, &size1, &max_size1); - base2 = ref2; - if (handled_component_p (ref2)) - base2 = get_ref_base_and_extent (ref2, &offset2, &size2, &max_size2); - - /* If both references are based on different variables, they cannot alias. - If both references are based on the same variable, they cannot alias if - the accesses do not overlap. */ - if (SSA_VAR_P (base1) - && SSA_VAR_P (base2)) - { - if (!operand_equal_p (base1, base2, 0)) - return false; - return ranges_overlap_p (offset1, max_size1, offset2, max_size2); - } - - /* If one base is a ref-all pointer weird things are allowed. */ - strict_aliasing_applies = (flag_strict_aliasing - && (!INDIRECT_REF_P (base1) - || get_alias_set (base1) != 0) - && (!INDIRECT_REF_P (base2) - || get_alias_set (base2) != 0)); - - /* If strict aliasing applies the only way to access a scalar variable - is through a pointer dereference or through a union (gcc extension). */ - if (strict_aliasing_applies - && ((SSA_VAR_P (ref2) - && !AGGREGATE_TYPE_P (TREE_TYPE (ref2)) - && !INDIRECT_REF_P (ref1) - && TREE_CODE (TREE_TYPE (base1)) != UNION_TYPE) - || (SSA_VAR_P (ref1) - && !AGGREGATE_TYPE_P (TREE_TYPE (ref1)) - && !INDIRECT_REF_P (ref2) - && TREE_CODE (TREE_TYPE (base2)) != UNION_TYPE))) - return false; - - /* If both references are through the same type, or if strict aliasing - doesn't apply they are through two same pointers, they do not alias - if the accesses do not overlap. */ - if ((strict_aliasing_applies - && (TYPE_MAIN_VARIANT (TREE_TYPE (base1)) - == TYPE_MAIN_VARIANT (TREE_TYPE (base2)))) - || (TREE_CODE (base1) == INDIRECT_REF - && TREE_CODE (base2) == INDIRECT_REF - && operand_equal_p (TREE_OPERAND (base1, 0), - TREE_OPERAND (base2, 0), 0))) - return ranges_overlap_p (offset1, max_size1, offset2, max_size2); - - /* If both are component references through pointers try to find a - common base and apply offset based disambiguation. This handles - for example - struct A { int i; int j; } *q; - struct B { struct A a; int k; } *p; - disambiguating q->i and p->a.j. */ - if (strict_aliasing_applies - && (TREE_CODE (base1) == INDIRECT_REF - || TREE_CODE (base2) == INDIRECT_REF) - && handled_component_p (ref1) - && handled_component_p (ref2)) - { - tree *refp; - /* Now search for the type of base1 in the access path of ref2. This - would be a common base for doing offset based disambiguation on. */ - refp = &ref2; - while (handled_component_p (*refp) - /* Note that the following is only conservative if there are - never copies of types appearing as sub-structures. */ - && (TYPE_MAIN_VARIANT (TREE_TYPE (*refp)) - != TYPE_MAIN_VARIANT (TREE_TYPE (base1)))) - refp = &TREE_OPERAND (*refp, 0); - if (TYPE_MAIN_VARIANT (TREE_TYPE (*refp)) - == TYPE_MAIN_VARIANT (TREE_TYPE (base1))) - { - HOST_WIDE_INT offadj, sztmp, msztmp; - get_ref_base_and_extent (*refp, &offadj, &sztmp, &msztmp); - offset2 -= offadj; - return ranges_overlap_p (offset1, max_size1, offset2, max_size2); - } - /* The other way around. */ - refp = &ref1; - while (handled_component_p (*refp) - && (TYPE_MAIN_VARIANT (TREE_TYPE (*refp)) - != TYPE_MAIN_VARIANT (TREE_TYPE (base2)))) - refp = &TREE_OPERAND (*refp, 0); - if (TYPE_MAIN_VARIANT (TREE_TYPE (*refp)) - == TYPE_MAIN_VARIANT (TREE_TYPE (base2))) - { - HOST_WIDE_INT offadj, sztmp, msztmp; - get_ref_base_and_extent (*refp, &offadj, &sztmp, &msztmp); - offset1 -= offadj; - return ranges_overlap_p (offset1, max_size1, offset2, max_size2); - } - /* If we can be sure to catch all equivalent types in the search - for the common base then we could return false here. In that - case we would be able to disambiguate q->i and p->k. */ - } - - return true; -} - -/* Given a stmt STMT that references memory, return the single stmt - that is reached by following the VUSE -> VDEF link. Returns - NULL_TREE, if there is no single stmt that defines all VUSEs of - STMT. - Note that for a stmt with a single virtual operand this may return - a PHI node as well. Note that if all VUSEs are default definitions - this function will return an empty statement. */ - -gimple -get_single_def_stmt (gimple stmt) -{ - gimple def_stmt = NULL; - tree use; - ssa_op_iter iter; - - FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_VIRTUAL_USES) - { - gimple tmp = SSA_NAME_DEF_STMT (use); - - /* ??? This is too simplistic for multiple virtual operands - reaching different PHI nodes of the same basic blocks or for - reaching all default definitions. */ - if (def_stmt - && def_stmt != tmp - && !(gimple_nop_p (def_stmt) - && gimple_nop_p (tmp))) - return NULL; - - def_stmt = tmp; - } - - return def_stmt; -} - -/* Given a PHI node of virtual operands, tries to eliminate cyclic - reached definitions if they do not alias REF and returns the - defining statement of the single virtual operand that flows in - from a non-backedge. Returns NULL_TREE if such statement within - the above conditions cannot be found. */ - -gimple -get_single_def_stmt_from_phi (tree ref, gimple phi) -{ - tree def_arg = NULL_TREE; - unsigned i; - - /* Find the single PHI argument that is not flowing in from a - back edge and verify that the loop-carried definitions do - not alias the reference we look for. */ - for (i = 0; i < gimple_phi_num_args (phi); ++i) - { - tree arg = PHI_ARG_DEF (phi, i); - gimple def_stmt; - - if (!(gimple_phi_arg_edge (phi, i)->flags & EDGE_DFS_BACK)) - { - /* Multiple non-back edges? Do not try to handle this. */ - if (def_arg) - return NULL; - def_arg = arg; - continue; - } - - /* Follow the definitions back to the original PHI node. Bail - out once a definition is found that may alias REF. */ - def_stmt = SSA_NAME_DEF_STMT (arg); - do - { - if (!is_gimple_assign (def_stmt) - || refs_may_alias_p (ref, gimple_assign_lhs (def_stmt))) - return NULL; - /* ??? This will only work, reaching the PHI node again if - there is a single virtual operand on def_stmt. */ - def_stmt = get_single_def_stmt (def_stmt); - if (!def_stmt) - return NULL; - } - while (def_stmt != phi); - } - - return SSA_NAME_DEF_STMT (def_arg); -} - -/* Return the single reference statement defining all virtual uses - on STMT or NULL_TREE, if there are multiple defining statements. - Take into account only definitions that alias REF if following - back-edges when looking through a loop PHI node. */ - -gimple -get_single_def_stmt_with_phi (tree ref, gimple stmt) -{ - switch (NUM_SSA_OPERANDS (stmt, SSA_OP_VIRTUAL_USES)) - { - case 0: - gcc_unreachable (); - - case 1: - { - gimple def_stmt = SSA_NAME_DEF_STMT (SINGLE_SSA_TREE_OPERAND - (stmt, SSA_OP_VIRTUAL_USES)); - /* We can handle lookups over PHI nodes only for a single - virtual operand. */ - if (gimple_code (def_stmt) == GIMPLE_PHI) - return get_single_def_stmt_from_phi (ref, def_stmt); - return def_stmt; - } - - default: - return get_single_def_stmt (stmt); - } -} -- cgit v1.2.1