1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/opt/mmx2.C b/gcc/testsuite/g++.dg/opt/mmx2.C
new file mode 100644
index 000000000..8ee6cd469
--- /dev/null
+++ b/gcc/testsuite/g++.dg/opt/mmx2.C
@@ -0,0 +1,24 @@
+// { dg-do link { target i?86-*-* x86_64-*-* } }
+// { dg-options "-O2 -mmmx" }
+// { dg-prune-output "mangled name" }
+
+#include <mmintrin.h>
+
+static union u { __m64 m; long long l; } u;
+extern "C" void abort (void);
+
+__attribute__((noinline))
+void bar (__m64 x)
+{
+  u.m = x;
+}
+
+int
+main ()
+{
+  bar (_mm_set_pi32 (0x000000FF,0xFFFF00FF));
+  _mm_empty ();
+  if (u.l != 0xffffff00ffLL)
+    abort ();
+  return 0;
+}