gcc/testsuite/gcc.target/i386/sse-set-ps-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -msse" } */
   3 /* { dg-require-effective-target sse } */
   4
   5 #include "sse-check.h"
   6
   7 #ifdef DEBUG
   8 #include <stdio.h>
   9 #endif
  10
  11 #include <xmmintrin.h>
  12
  13 static void
  14 __attribute__((noinline))
  15 test (float *v)
  16 {
  17   union
  18     {
  19       __m128 x;
  20       float f[4];
  21     } u;
  22   unsigned int i;
  23
  24   u.x = _mm_set_ps (v[3], v[2], v[1], v[0]);
  25
  26   for (i = 0; i < sizeof (u) / sizeof (v[0]); i++)
  27     if (v[i] != u.f[i])
  28       {
  29 #ifdef DEBUG
  30         printf ("%i: %f != %f\n", i, v[i], u.f[i]);
  31 #endif
  32         abort ();
  33       }
  34 }
  35
  36 static void
  37 sse_test (void)
  38 {
  39   float v[4] = { -3, 2, 1, 9 };
  40   test (v);
  41 }