1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr31521.c b/gcc/testsuite/gcc.dg/tree-ssa/pr31521.c
new file mode 100644
index 000000000..4f54cc077
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr31521.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-vrp1" } */
+
+void fail(void) __attribute__((noreturn));
+int bar(int);
+
+int foo(int x) {
+  int i;
+  int s = 0;
+
+  if (x <= 0) fail();
+  for (i = 0; i < x; ++i) {
+    /* This division by 4 should be replaced with >> 2.  */
+    s += bar(i/4);
+  }
+  return s;
+}
+
+/* { dg-final { scan-tree-dump-times " = i_.* >> 2" 1 "vrp1" } } */
+/* { dg-final { cleanup-tree-dump "vrp1" } } */