1 files changed, 37 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr23294.c b/gcc/testsuite/gcc.dg/tree-ssa/pr23294.c
new file mode 100644
index 000000000..ed890fa55
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr23294.c
@@ -0,0 +1,37 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fdump-tree-optimized" } */
+
+int f1(int a)
+{
+  return a*6-a;
+}
+
+int f2(int a)
+{
+  return a*4+a;
+}
+
+int f3(int a)
+{
+  return 2*a + 3*a;
+}
+
+int f4(int a, int b)
+{
+  return 2*a + 6*b;
+}
+
+int f5(int a, int b)
+{
+  return 2*a - 6*b;
+}
+
+int f6(int a, int b)
+{
+  return 6*a - 2*b;
+}
+
+/* { dg-final { scan-tree-dump-times "a_..D. \\\* 5" 3 "optimized" } } */
+/* { dg-final { scan-tree-dump-times " \\\* 2" 3 "optimized" } } */
+/* { dg-final { scan-tree-dump-not "\\\* 6" "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */