tree-ssa-alias.c (stmt_kills_ref_p_1): Properly compare MEM_REF offsets.

[gcc.git] / gcc / tree-ssa-alias.c

diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c
index 971a34763d8c36b3bec3becc02795e576b069763..2ecd13915bc87b3128a4320e0108981790a6537f 100644 (file)
--- a/gcc/tree-ssa-alias.c
+++ b/gcc/tree-ssa-alias.c
@@ -2002,8 +2002,8 @@ stmt_kills_ref_p_1 (gimple stmt, ao_ref *ref)
          if (TREE_CODE (base) == MEM_REF && TREE_CODE (ref->base) == MEM_REF
              && TREE_OPERAND (base, 0) == TREE_OPERAND (ref->base, 0))
            {
-             if (!tree_int_cst_equal (TREE_OPERAND (base, 0),
-                                      TREE_OPERAND (ref->base, 0)))
+             if (!tree_int_cst_equal (TREE_OPERAND (base, 1),
+                                      TREE_OPERAND (ref->base, 1)))
                {
                  double_int off1 = mem_ref_offset (base);
                  off1 = off1.lshift (BITS_PER_UNIT == 8