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2007-08-26 Bernhard Fischer <aldot@gcc.gnu.org>
* tree-ssa-sccvn.c, tree-ssa-sccvn.h, tree-vn.c,
tree-ssa-pre.c: Remove unnecessary trailing whitespace.
From-SVN: r127816
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License and to point readers at the COPYING3 file and the FSF's license web page.
From-SVN: r126948
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2007-06-30 Daniel Berlin <dberlin@dberlin.org>
Fix PR tree-optimization/32540
Fix PR tree-optimization/31651
* tree-ssa-sccvn.c: New file.
* tree-ssa-sccvn.h: Ditto.
* tree-vn.c: Include tree-ssa-sccvn.h
(val_expr_paid_d): Removed.
(value_table): Ditto.
(vn_compute): Ditto.
(val_expr_pair_hash): Ditto.
(val_expr_pair_expr_eq): Ditto.
(copy_vuses_from_stmt): Ditto.
(vn_delete): Ditto.
(vn_init): Ditto.
(shared_vuses_from_stmt): Ditto.
(print_creation_to_file): Moved up.
(sort_vuses): Ditto.
(sort_vuses_heap): Ditto.
(set_value_handle): Make non-static.
(make_value_handle): Ditto.
(vn_add): Rewritten to use sccvn lookups.
(vn_add_with_vuses): Ditto.
(vn_lookup): Ditto (and second argument removed).
(vn_lookup_with_vuses): Ditto.
(vn_lookup_or_add): Ditto (and second argument removed);
(vn_lookup_or_add_with_vuses): Ditto.
(vn_lookup_with_stmt): New.
(vn_lookup_or_add_with_stmt): Ditto.
(create_value_handle_for_expr): Ditto.
* tree-ssa-pre.c: Include tree-ssa-sccvn.h.
(seen_during_translate): New function.
(phi_trans_lookup): Use iterative_hash_expr, not vn_compute.
(phi_trans_add): Ditto.
(constant_expr_p): FIELD_DECL is always constant.
(phi_translate_1): Renamed from phi_translate, add seen bitmap.
Use constant_expr_p.
Avoid infinite recursion on mutually valued expressions.
Change callers of vn_lookup_or_add.
(phi_translate): New function.
(compute_antic_safe): Allow phi nodes.
(create_component_ref_by_pieces): Update for FIELD_DECL change.
(find_or_generate_expression): Rewrite slightly.
(create_expression_by_pieces): Updated for vn_lookup_or_add
change.
Update VN_INFO for new names.
(insert_into_preds_of_block): Update for new names.
(add_to_exp_gen): New function.
(add_to_sets): Use vn_lookup_or_add_with_stmt.
(find_existing_value_expr): Rewrite to changed vn_lookup.
(create_value_expr_from): Ditto, and use add_to_exp_gen.
(try_look_through_load): Removed.
(try_combine_conversion): Ditto.
(get_sccvn_value): New function.
(make_values_for_phi): Ditto.
(make_values_for_stmt): Ditto.
(compute_avail): Rewritten for vn_lookup_or_add changes and to use
SCCVN.
(init_pre): Update for SCCVN changes.
(fini_pre): Ditto.
(execute_pre): Ditto.
* tree-flow.h (make_value_handle): Declare.
(set_value_handle): Ditto.
(sort_vuses_heap): Ditto.
(vn_lookup_or_add_with_stmt): Ditto.
(vn_lookup_with_stmt): Ditto.
(vn_compute): Remove.
(vn_init): Ditto.
(vn_delete): Ditto.
(vn_lookup): Update arguments.
* Makefile.in (tree-ssa-pre.o): Add tree-ssa-sccvn.h
(tree-vn.o): Ditto.
(tree-ssa-sccvn.o): New.
(OBJS-common): Add tree-ssa-sccvn.o
From-SVN: r126149
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