sse5-msubxx.c

来自「用于进行gcc测试」· C语言 代码 · 共 140 行

/* { dg-do run } */
/* { dg-require-effective-target sse5 } */
/* { dg-options "-O2 -msse5" } */

#include "sse5-check.h"

#include <bmmintrin.h>
#include <string.h>

#define NUM 20

union
{
  __m128 x[NUM];
  float f[NUM * 4];
  __m128d y[NUM];
  double d[NUM * 2];
} dst, res, src1, src2, src3;

/* Note that in macc*,msub*,mnmacc* and mnsub* instructions, the intermdediate 
   product is not rounded, only the addition is rounded. */

static void
init_msubps ()
{
  int i;
  for (i = 0; i < NUM * 4; i++)
    {
      src1.f[i] = i;
      src2.f[i] = i + 10;
      src3.f[i] = i + 20;
    }
}

static void
init_msubpd ()
{
  int i;
  for (i = 0; i < NUM * 4; i++)
    {
      src1.d[i] = i;
      src2.d[i] = i + 10;
      src3.d[i] = i + 20;
    }
}

static int
check_msubps ()
{
  int i, j, check_fails = 0;
  for (i = 0; i < NUM * 4; i = i + 4)
    for (j = 0; j < 4; j++)
      {
	res.f[i + j] = (src1.f[i + j] * src2.f[i + j]) - src3.f[i + j];
	if (dst.f[i + j] != res.f[i + j]) 
	  check_fails++;
      }
  return check_fails++;
}

static int
check_msubpd ()
{
  int i, j, check_fails = 0;
  for (i = 0; i < NUM * 2; i = i + 2)
    for (j = 0; j < 2; j++)
      {
	res.d[i + j] = (src1.d[i + j] * src2.d[i + j]) - src3.d[i + j];
	if (dst.d[i + j] != res.d[i + j]) 
	  check_fails++;
      }
  return check_fails++;
}


static int
check_msubss ()
{
  int i, j, check_fails = 0;
  for (i = 0; i < NUM * 4; i = i + 4)
    {
      res.f[i] = (src1.f[i] * src2.f[i]) - src3.f[i];
      if (dst.f[i] != res.f[i]) 
	check_fails++;
    }	
  return check_fails++;
}

static int
check_msubsd ()
{
  int i, j, check_fails = 0;
  for (i = 0; i < NUM * 2; i = i + 2)
    {
      res.d[i] = (src1.d[i] * src2.d[i]) - src3.d[i];
      if (dst.d[i] != res.d[i]) 
	check_fails++;
    }
  return check_fails++;
}

static void
sse5_test (void)
{
  int i;
  
  /* Check msubps */
  init_msubps ();
  
  for (i = 0; i < NUM; i++)
    dst.x[i] = _mm_msub_ps (src1.x[i], src2.x[i], src3.x[i]);
  
  if (check_msubps ()) 
    abort ();
  
  /* check msubss */
  for (i = 0; i < NUM; i++)
    dst.x[i] = _mm_msub_ss (src1.x[i], src2.x[i], src3.x[i]);
  
  if (check_msubss ()) 
    abort ();
  
  /* Check msubpd */
  init_msubpd ();
  
  for (i = 0; i < NUM; i++)
    dst.y[i] = _mm_msub_pd (src1.y[i], src2.y[i], src3.y[i]);
  
  if (check_msubpd ()) 
    abort ();
  
  /* Check msubps */
  for (i = 0; i < NUM; i++)
    dst.y[i] = _mm_msub_sd (src1.y[i], src2.y[i], src3.y[i]);
  
  if (check_msubsd ()) 
    abort ();
  
}