tree-cfg.c (tree_duplicate_bb): Mark duplicated definitions.

	* 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

1 files changed, 7 insertions, 0 deletions

diff --git a/gcc/tree.h b/gcc/tree.h
index 92e9a55..64fde74 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -2658,6 +2658,13 @@ extern void replace_ssa_name_symbol (tree, tree);
 extern void ssanames_print_statistics (void);
 #endif
 
+extern void mark_for_rewrite (tree);
+extern void unmark_all_for_rewrite (void);
+extern bool marked_for_rewrite_p (tree);
+extern bool any_marked_for_rewrite_p (void);
+extern struct bitmap_head_def *marked_ssa_names (void);
+
+
 /* Return the (unique) IDENTIFIER_NODE node for a given name.
    The name is supplied as a char *.  */