--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/store_merging_30.c	Mon May 25 07:50:57 2020 +0900
@@ -0,0 +1,20 @@
+/* PR tree-optimization/94573 */
+/* { dg-do compile } */
+/* { dg-require-effective-target store_merge } */
+/* { dg-options "-O2 -fdump-tree-store-merging-details" } */
+/* { dg-final { scan-tree-dump "New sequence of 4 stores to replace old one of 8 stores" "store-merging" { target lp64 } } } */
+
+int var[43][12];
+
+void
+foo (int x)
+{
+  var[x][0] = 0;
+  var[x][1] = 0;
+  var[x][2] = 0;
+  var[x][3] = 0;
+  var[x][4] = 0;
+  var[x][5] = 0;
+  var[x][6] = 0;
+  var[x][7] = 0;
+}