1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/dse.c b/gcc/testsuite/gcc.dg/dse.c
new file mode 100644
index 000000000..4a859ae03
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/dse.c
@@ -0,0 +1,32 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-dse-details" } */
+
+#define N 256
+
+struct
+{
+  int x;
+  int y;
+} S[100];
+
+int z[100];
+
+int
+foo (void)
+{
+  int i;
+  int x, y;
+
+  S[5].x = 0;
+  S[5].y = 0;
+
+  x = 5 + z[0];
+  y = z[0];
+
+  S[5].x = x;
+  S[5].y = y;
+}
+
+/* { dg-final { scan-tree-dump-times "Deleted dead store" 2 "dse1" } } */
+/* { dg-final { cleanup-tree-dump "dse*" } } */
+