gcc/testsuite/gcc.target/i386/sse-init-v4sf-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -msse" } */
   3
   4 #include "sse-check.h"
   5
   6 #ifdef DEBUG
   7 #include <stdio.h>
   8 #endif
   9
  10 #include <xmmintrin.h>
  11
  12 static void
  13 __attribute__((noinline))
  14 check (__m128 x, float *v, int j)
  15 {
  16   union
  17     {
  18       __m128 x;
  19       float f[4];
  20     } u;
  21   unsigned int i;
  22
  23   u.x = x;
  24
  25   for (i = 0; i < sizeof (v) / sizeof (v[0]); i++)
  26     if (i == j)
  27       {
  28         if (v[i] != u.f[i])
  29           {
  30 #ifdef DEBUG
  31             printf ("%i: %f != %f\n", i, v[i], u.f[i]);
  32 #endif
  33             abort ();
  34           }
  35       }
  36     else if (u.f[i] != 0)
  37       {
  38 #ifdef DEBUG
  39         printf ("%i: %f != 0\n", i, u.f[i]);
  40 #endif
  41         abort ();
  42       }
  43 }
  44
  45 static void
  46 __attribute__((noinline))
  47 test (float *v)
  48 {
  49   __m128 x;
  50
  51   x = _mm_set_ps (0, 0, 0, v[0]);
  52   check (x, v, 0);
  53   x = _mm_set_ps (0, 0, v[1], 0);
  54   check (x, v, 1);
  55   x = _mm_set_ps (0, v[2], 0, 0);
  56   check (x, v, 2);
  57   x = _mm_set_ps (v[3], 0, 0, 0);
  58   check (x, v, 3);
  59 }
  60
  61 static void
  62 sse_test (void)
  63 {
  64   float v[4] = { -3, 2, 1, 9 };
  65   test (v);
  66 }