1 files changed, 37 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/sse-3.c b/gcc/testsuite/gcc.target/i386/sse-3.c
new file mode 100644
index 000000000..1be1d1aa2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/sse-3.c
@@ -0,0 +1,37 @@
+/* PR target/21149 */
+/* { dg-do run } */
+/* { dg-options "-O2 -msse" } */
+/* { dg-require-effective-target sse } */
+
+#include "sse-check.h"
+
+#include <xmmintrin.h>
+
+void
+__attribute__((noinline))
+check (__m128 x, float a, float b, float c, float d)
+{
+  union { __m128 m; float f[4]; } u;
+  u.m = x;
+  if (u.f[0] != a || u.f[1] != b || u.f[2] != c || u.f[3] != d)
+    abort ();
+}
+
+static inline
+void
+foo (__m128 *x)
+{
+  __m128 y = _mm_setzero_ps ();
+  __m128 v = _mm_movehl_ps (y, *x);
+  __m128 w = _mm_movehl_ps (*x, y);
+  check (*x, 9, 1, 2, -3);
+  check (v, 2, -3, 0, 0);
+  check (w, 0, 0, 2, -3);
+}
+
+static void
+sse_test (void)
+{
+  __m128 y = _mm_set_ps (-3, 2, 1, 9);
+  foo (&y);
+}