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-rw-r--r--gcc/ChangeLog6
-rw-r--r--gcc/tree-ssa-copy.c4
2 files changed, 8 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 79e80a5..40b125e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2004-09-20 Andrew Pinski <pinskia@physics.uc.edu>
+
+ PR tree-opt/17558
+ * tree-ssa-copy.c (may_propagate_copy): Only allow if the
+ aliasing sets are the same rather than just conflicting.
+
2004-09-20 Jan Hubicka <jh@suse.cz>
PR middle-end/16460
diff --git a/gcc/tree-ssa-copy.c b/gcc/tree-ssa-copy.c
index 611bae7..447f149 100644
--- a/gcc/tree-ssa-copy.c
+++ b/gcc/tree-ssa-copy.c
@@ -112,8 +112,8 @@ may_propagate_copy (tree dest, tree orig)
return false;
else if (!lang_hooks.types_compatible_p (type_d, type_o))
return false;
- else if (!alias_sets_conflict_p (get_alias_set (TREE_TYPE (type_d)),
- get_alias_set (TREE_TYPE (type_o))))
+ else if (get_alias_set (TREE_TYPE (type_d)) !=
+ get_alias_set (TREE_TYPE (type_o)))
return false;
}