1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/no-strict-overflow-6.c b/gcc/testsuite/gcc.dg/no-strict-overflow-6.c
new file mode 100644
index 000000000..43200bb20
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/no-strict-overflow-6.c
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-options "-fno-strict-overflow -O2 -fdump-tree-optimized" } */
+
+/* Source: Ian Lance Taylor.  */
+
+/* VRP test.  We can not simplify the conditional when not using
+   strict overflow semantics.  We don't test this with
+   -fstrict-overflow because it turns into an infinite loop.  That is
+   OK but it would also be OK to not do that.  */
+
+int
+foo ()
+{
+  int i, bits;
+  for (i = 1, bits = 1; i > 0; i += i)
+    ++bits;
+  return bits;
+}
+
+/* { dg-final { scan-tree-dump "return bits" "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */