1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/slsr-7.c b/gcc/testsuite/gcc.dg/tree-ssa/slsr-7.c
new file mode 100644
index 00000000000..ace755f07ab
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/slsr-7.c
@@ -0,0 +1,22 @@
+/* Verify straight-line strength reduction for simple integer subtraction.  */
+
+/* { dg-do compile } */
+/* { dg-options "-O3 -fdump-tree-optimized" } */
+
+int
+f (int s, int c)
+{
+  int a1, a2, a3, x1, x2, x3, x;
+
+  a1 = 2 * s;
+  x1 = c - a1;
+  a2 = 4 * s;
+  x2 = c - a2;
+  a3 = 6 * s;
+  x3 = c - a3;
+  x = x1 + x2 + x3;
+  return x;
+}
+
+/* { dg-final { scan-tree-dump-times " \\* " 1 "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */