gcc/testsuite/gcc.target/i386/fma-256-fmsubaddXX.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 void
  11 check_mm256_fmsubadd_ps (__m256 __A, __m256 __B, __m256 __C)
  12 {
  13   union256 a, b, c, e;
  14   a.x = __A;
  15   b.x = __B;
  16   c.x = __C;
  17   float d[8];
  18   int i;
  19   e.x = _mm256_fmsubadd_ps (__A, __B, __C);
  20   for (i = 0; i < 8; i++)
  21     {
  22       d[i] = a.a[i] * b.a[i] + (i % 2 == 1 ? -c.a[i] : c.a[i]);
  23     }
  24   if (check_union256 (e, d))
  25     abort ();
  26 }
  27
  28 void
  29 check_mm256_fmsubadd_pd (__m256d __A, __m256d __B, __m256d __C)
  30 {
  31   union256d a, b, c, e;
  32   a.x = __A;
  33   b.x = __B;
  34   c.x = __C;
  35   double d[4];
  36   int i;
  37   e.x = _mm256_fmsubadd_pd (__A, __B, __C);
  38   for (i = 0; i < 4; i++)
  39     {
  40       d[i] = a.a[i] * b.a[i] + (i % 2 == 1 ? -c.a[i] : c.a[i]);
  41     }
  42   if (check_union256d (e, d))
  43     abort ();
  44 }
  45
  46 static void
  47 fma_test (void)
  48 {
  49   union256 c[3];
  50   union256d d[3];
  51   int i, j;
  52   for (i = 0; i < 3; i++)
  53     {
  54       for (j = 0; j < 8; j++)
  55         c[i].a[j] = i * j + 3.5;
  56       for (j = 0; j < 4; j++)
  57         d[i].a[j] = i * j + 3.5;
  58     }
  59   check_mm256_fmsubadd_pd (d[0].x, d[1].x, d[2].x);
  60   check_mm256_fmsubadd_ps (c[0].x, c[1].x, c[2].x);
  61 }