gcc/testsuite/gcc.target/i386/sse-3.c

   1 /* PR target/21149 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -msse" } */
   4 /* { dg-require-effective-target sse } */
   5
   6 #include "sse-check.h"
   7
   8 #include <xmmintrin.h>
   9
  10 void
  11 __attribute__((noinline))
  12 check (__m128 x, float a, float b, float c, float d)
  13 {
  14   union { __m128 m; float f[4]; } u;
  15   u.m = x;
  16   if (u.f[0] != a || u.f[1] != b || u.f[2] != c || u.f[3] != d)
  17     abort ();
  18 }
  19
  20 static inline
  21 void
  22 foo (__m128 *x)
  23 {
  24   __m128 y = _mm_setzero_ps ();
  25   __m128 v = _mm_movehl_ps (y, *x);
  26   __m128 w = _mm_movehl_ps (*x, y);
  27   check (*x, 9, 1, 2, -3);
  28   check (v, 2, -3, 0, 0);
  29   check (w, 0, 0, 2, -3);
  30 }
  31
  32 static void
  33 sse_test (void)
  34 {
  35   __m128 y = _mm_set_ps (-3, 2, 1, 9);
  36   foo (&y);
  37 }