--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/ext/mvc1.C	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,35 @@
+/* { dg-do run { target i?86-*-* x86_64-*-* } } */
+/* { dg-require-ifunc "" } */
+
+__attribute__((target_clones("avx","arch=slm","arch=core-avx2","default")))
+int
+foo ()
+{
+  return -2;
+}
+
+__attribute__((target("avx","arch=core-avx2")))
+int
+bar ()
+{
+  return 2;
+}
+
+__attribute__((target("default")))
+int
+bar ()
+{
+  return 2;
+}
+
+int
+main ()
+{
+  int r = 0;
+  r += bar ();
+  r += foo ();
+  r += bar ();
+  r += foo ();
+  r += bar ();
+  return r - 2;
+}