gcc/testsuite/gcc.target/i386/sse4_1-blendvps.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target sse4 } */
   3 /* { dg-options "-O2 -msse4.1" } */
   4
   5 #include "sse4_1-check.h"
   6
   7 #include <smmintrin.h>
   8 #include <string.h>
   9
  10 #define NUM 20
  11
  12 static void
  13 init_blendvps (float *src1, float *src2, float *mask)
  14 {
  15   int i, msk, sign = 1;
  16
  17   msk = -1;
  18   for (i = 0; i < NUM * 4; i++)
  19     {
  20       if((i % 4) == 0)
  21         msk++;
  22       src1[i] = i* (i + 1) * sign;
  23       src2[i] = (i + 20) * sign;
  24       mask[i] = (i + 120) * i;
  25       if( (msk & (1 << (i % 4))))
  26         mask[i] = -mask[i];
  27       sign = -sign;
  28     }
  29 }
  30
  31 static int
  32 check_blendvps (__m128 *dst, float *src1, float *src2,
  33                 float *mask)
  34 {
  35   float tmp[4];
  36   int j;
  37
  38   memcpy (&tmp[0], src1, sizeof (tmp));
  39   for (j = 0; j < 4; j++)
  40     if (mask [j] < 0.0)
  41       tmp[j] = src2[j];
  42
  43   return memcmp (dst, &tmp[0], sizeof (tmp));
  44 }
  45
  46 static void
  47 sse4_1_test (void)
  48 {
  49   union
  50     {
  51       __m128 x[NUM];
  52       float f[NUM * 4];
  53     } dst, src1, src2, mask;
  54   int i;
  55
  56   init_blendvps (src1.f, src2.f, mask.f);
  57
  58   for (i = 0; i < NUM; i++)
  59     {
  60       dst.x[i] = _mm_blendv_ps (src1.x[i], src2.x[i], mask.x[i]);
  61       if (check_blendvps (&dst.x[i], &src1.f[i * 4], &src2.f[i * 4],
  62                           &mask.f[i * 4]))
  63         abort ();
  64     }
  65 }