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* tree-cfg.c (tree_duplicate_bb): Mark duplicated definitions.
* tree-flow.h (rewrite_ssa_into_ssa): Declaration changed.
* tree-into-ssa.c (rewrite_ssa_into_ssa): Use new interface to
manipulate the duplicated ssa names.
* tree-ssanames.c (ssa_names_to_rewrite): New variable.
(marked_for_rewrite_p, any_marked_for_rewrite_p, mark_for_rewrite,
unmark_all_for_rewrite, marked_ssa_names, release_ssa_name_force):
New functions.
(release_ssa_name): Do not release ssa names that may have multiple
definitions.
* tree.h (release_ssa_name_force, mark_for_rewrite,
unmark_all_for_rewrite, marked_for_rewrite_p, any_marked_for_rewrite_p,
marked_ssa_names): Declare.
* tree-ssa-loop-ch.c (mark_defs_for_rewrite): Remove.
(duplicate_blocks): Remove call to mark_defs_for_rewrite.
Update call to rewrite_ssa_into_ssa.
Co-Authored-By: Jeff Law <law@redhat.com>
From-SVN: r85572
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* tree-ssa-loop-ch.c: New file.
* Makefile.in (tree-ssa-loop-ch.o): Add.
(tree-into-ssa.o): Add GGC_H dependency.
* tree-cfg.c (tree_duplicate_bb): Copy virtual arguments.
* tree-flow.h (rewrite_into_ssa): Declaration changed.
(rewrite_ssa_into_ssa, compute_global_livein, duplicate_ssa_name):
Declare.
* tree-into-ssa.c: Include ggc.h.
(struct def_blocks_d): Add phi_blocks field.
(struct mark_def_sites_global_data): Add names_to_rename field.
(struct ssa_name_info): New.
(compute_global_livein): Export.
(set_def_block, insert_phi_nodes, mark_def_sites, set_livein_block,
insert_phi_nodes_1, rewrite_finalize_block, insert_phi_nodes_for,
register_new_def, get_reaching_def, def_blocks_free,
get_def_blocks_for, rewrite_into_ssa): Modified to work with
rewrite_ssa_into_ssa.
(get_ssa_name_ann, get_phi_state, set_phi_state, get_current_def,
set_current_def, ssa_mark_def_sites_initialize_block,
ssa_mark_phi_uses, ssa_mark_def_sites, duplicate_ssa_name,
ssa_register_new_def, ssa_rewrite_initialize_block,
ssa_rewrite_phi_arguments, ssa_rewrite_finalize_block,
ssa_rewrite_stmt, rewrite_ssa_into_ssa, rewrite_all_into_ssa): New
functions.
(pass_build_ssa): Call rewrite_all_into_ssa.
* tree-optimize.c (execute_todo, execute_one_pass,
tree_rest_of_compilation): Allocate vars_to_rename only once.
* tree-ssa-dom.c (tree_ssa_dominator_optimize): Provide parameter
to rewrite_into_ssa.
* tree-ssa-loop.c (should_duplicate_loop_header_p,
mark_defs_for_rewrite, duplicate_blocks, do_while_loop_p,
copy_loop_headers, gate_ch, pass_ch): Moved to tree-ssa-loop-ch.c.
Use rewrite_ssa_into_ssa.
* tree-ssa-operands.c (copy_virtual_operands): New function.
* tree-ssa-operands.h (copy_virtual_operands): Declare.
* tree.h (struct tree_ssa_name): Add aux field.
(SSA_NAME_AUX): New macro to access it.
From-SVN: r83932
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