1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr42916.c b/gcc/testsuite/gcc.dg/pr42916.c
new file mode 100644
index 000000000..d32ba9488
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr42916.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -funroll-loops -ftree-vectorize -fcompare-debug" } */
+
+int seed;
+
+static inline int hash(const char *str)
+{
+  int h = seed++;
+  int i = 12;
+  while (i--)
+    h += (h << 3) ^ *str++;
+  return h;
+}
+
+void f(const char *str, int *h)
+{
+  int i = 6;
+  while (i--)
+    *h++ = hash(str);
+}