gcc/testsuite/gcc.target/i386/fma-256-fmsubXX.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target fma } */
   3 /* { dg-options "-O2 -mfma" } */
   4
   5 #include "fma-check.h"
   6
   7 #include <x86intrin.h>
   8 #include "m256-check.h"
   9
  10
  11 void
  12 check_mm256_fmsub_pd (__m256d __A, __m256d __B, __m256d __C)
  13 {
  14   union256d a, b, c, e;
  15   a.x = __A;
  16   b.x = __B;
  17   c.x = __C;
  18   double d[4];
  19   int i;
  20   e.x = _mm256_fmsub_pd (__A, __B, __C);
  21   for (i = 0; i < 4; i++)
  22     {
  23       d[i] = a.a[i] * b.a[i] - c.a[i];
  24     }
  25   if (check_union256d (e, d))
  26     abort ();
  27 }
  28
  29 void
  30 check_mm256_fmsub_ps (__m256 __A, __m256 __B, __m256 __C)
  31 {
  32   union256 a, b, c, e;
  33   a.x = __A;
  34   b.x = __B;
  35   c.x = __C;
  36   float d[8];
  37   int i;
  38   e.x = _mm256_fmsub_ps (__A, __B, __C);
  39   for (i = 0; i < 8; i++)
  40     {
  41       d[i] = a.a[i] * b.a[i] - c.a[i];
  42     }
  43   if (check_union256 (e, d))
  44     abort ();
  45 }
  46
  47 static void
  48 fma_test (void)
  49 {
  50   union256 c[3];
  51   union256d d[3];
  52   int i, j;
  53   for (i = 0; i < 3; i++)
  54     {
  55       for (j = 0; j < 8; j++)
  56         c[i].a[j] = i * j + 3.5;
  57       for (j = 0; j < 4; j++)
  58         d[i].a[j] = i * j + 3.5;
  59     }
  60   check_mm256_fmsub_pd (d[0].x, d[1].x, d[2].x);
  61   check_mm256_fmsub_ps (c[0].x, c[1].x, c[2].x);
  62 }