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-rw-r--r--gcc/tree-ssa-copy.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/tree-ssa-copy.c b/gcc/tree-ssa-copy.c
index 0ddfa9ce825..4dca3a5e288 100644
--- a/gcc/tree-ssa-copy.c
+++ b/gcc/tree-ssa-copy.c
@@ -112,6 +112,9 @@ 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 (type_d),
+ get_alias_set (type_o)))
+ return false;
}
/* If the destination is a SSA_NAME for a virtual operand, then we have