Viewing file:  fma4-msubXX.c (2.35 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-require-effective-target fma4 } */
/* { dg-options "-O0 -mfma4" } */
#include "fma4-check.h"
#include <x86intrin.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
fma4_test (void)
{
int i;
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 ();
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 ();
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 ();
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 ();
}
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