gcc/testsuite/gcc.target/i386/fma-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 void
  11 check_mm_fmsub_pd (__m128d __A, __m128d __B, __m128d __C)
  12 {
  13   union128d a, b, c, e;
  14   a.x = __A;
  15   b.x = __B;
  16   c.x = __C;
  17   double d[2];
  18   int i;
  19   e.x = _mm_fmsub_pd (__A, __B, __C);
  20   for (i = 0; i < 2; i++)
  21     {
  22       d[i] = a.a[i] * b.a[i] - c.a[i];
  23     }
  24   if (check_union128d (e, d))
  25     abort ();
  26 }
  27
  28 void
  29 check_mm_fmsub_ps (__m128 __A, __m128 __B, __m128 __C)
  30 {
  31   union128 a, b, c, e;
  32   a.x = __A;
  33   b.x = __B;
  34   c.x = __C;
  35   float d[4];
  36   int i;
  37   e.x = _mm_fmsub_ps (__A, __B, __C);
  38   for (i = 0; i < 4; i++)
  39     {
  40       d[i] = a.a[i] * b.a[i] - c.a[i];
  41     }
  42   if (check_union128 (e, d))
  43     abort ();
  44 }
  45
  46 void
  47 check_mm_fmsub_sd (__m128d __A, __m128d __B, __m128d __C)
  48 {
  49   union128d a, b, c, e;
  50   a.x = __A;
  51   b.x = __B;
  52   c.x = __C;
  53   double d[2];
  54   int i;
  55   e.x = _mm_fmsub_sd (__A, __B, __C);
  56   for (i = 1; i < 2; i++)
  57     {
  58       d[i] = a.a[i];
  59     }
  60   d[0] = a.a[0] * b.a[0] - c.a[0];
  61   if (check_union128d (e, d))
  62     abort ();
  63 }
  64
  65 void
  66 check_mm_fmsub_ss (__m128 __A, __m128 __B, __m128 __C)
  67 {
  68   union128 a, b, c, e;
  69   a.x = __A;
  70   b.x = __B;
  71   c.x = __C;
  72   float d[4];
  73   int i;
  74   e.x = _mm_fmsub_ss (__A, __B, __C);
  75   for (i = 1; i < 4; i++)
  76     {
  77       d[i] = a.a[i];
  78     }
  79   d[0] = a.a[0] * b.a[0] - c.a[0];
  80   if (check_union128 (e, d))
  81     abort ();
  82 }
  83
  84 static void
  85 fma_test (void)
  86 {
  87   union128 a[3];
  88   union128d b[3];
  89   int i, j;
  90   for (i = 0; i < 3; i++)
  91     {
  92       for (j = 0; j < 4; j++)
  93         a[i].a[j] = i * j + 3.5;
  94       for (j = 0; j < 2; j++)
  95         b[i].a[j] = i * j + 3.5;
  96     }
  97   check_mm_fmsub_pd (b[0].x, b[1].x, b[2].x);
  98   check_mm_fmsub_sd (b[0].x, b[1].x, b[2].x);
  99   check_mm_fmsub_ps (a[0].x, a[1].x, a[2].x);
 100   check_mm_fmsub_ss (a[0].x, a[1].x, a[2].x);
 101 }