1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr81620-2.c b/gcc/testsuite/gcc.dg/tree-ssa/pr81620-2.c
new file mode 100644
index 00000000000..85a8e350840
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr81620-2.c
@@ -0,0 +1,25 @@
+/* { dg-do run } */
+/* { dg-options "-O3 -fno-tree-loop-vectorize -fdump-tree-pcom-details" } */
+
+int a[200];
+char b;
+void abort (void);
+
+int main() {
+  int i;
+  b = 100;
+  for (; b; b--) {
+    a[b] = 2;
+    a[b + 2] = 1;
+  }
+
+  if (a[0] != 0 || a[1] != 2 || a[2] != 2)
+    abort ();
+  for (i = 3; i < 103; i++)
+    if (a[i] != 1)
+    abort ();
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "Store-stores chain" 1 "pcom" } } */