Viewing file:  ssse3-pmaddubsw.c (1.86 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-options "-O3 -mpower8-vector -Wno-psabi" } */
/* { dg-require-effective-target p8vector_hw } */
#ifndef CHECK_H
#define CHECK_H "ssse3-check.h"
#endif
#ifndef TEST
#define TEST ssse3_test
#endif
#include CHECK_H
#include "ssse3-vals.h"
#include <tmmintrin.h>
#ifndef __AVX__
/* Test the 64-bit form */
static void
ssse3_test_pmaddubsw (__m64 *i1, __m64 *i2, __m64 *r)
{
*(__m64 *) r = _mm_maddubs_pi16 (*i1, *i2);
_mm_empty ();
}
#endif
/* Test the 128-bit form */
static void
ssse3_test_pmaddubsw128 (__m128i *i1, __m128i *i2, __m128i *r)
{
/* Assumes incoming pointers are 16-byte aligned */
*r = _mm_maddubs_epi16 (*i1, *i2);
}
static short
signed_saturate_to_word(int x)
{
if (x > (int) 0x7fff)
return 0x7fff;
if (x < (int) 0xffff8000)
return 0x8000;
return (short) x;
}
/* Routine to manually compute the results */
static void
compute_correct_result (unsigned char *i1, signed char *i2, short *r)
{
int t0;
int i;
for (i = 0; i < 8; i++)
{
t0 = ((int) i1[2 * i] * (int) i2[2 * i] +
(int) i1[2 * i + 1] * (int) i2[2 * i + 1]);
r[i] = signed_saturate_to_word (t0);
}
}
static void
TEST (void)
{
int i;
union data r __attribute__ ((aligned(16)));
union data ck;
int fail = 0;
for (i = 0; i < ARRAY_SIZE (vals) - 1; i++)
{
/* Manually compute the result */
compute_correct_result (&vals[i + 0].ub[0], &vals[i + 1].b[0], &ck.h[0]);
#ifndef __AVX__
/* Run the 64-bit tests */
ssse3_test_pmaddubsw (&vals[i + 0].ll[0], &vals[i + 1].ll[0], &r.ll[0]);
ssse3_test_pmaddubsw (&vals[i + 0].ll[1], &vals[i + 1].ll[1], &r.ll[1]);
fail += chk_128 (ck.m[0], r.m[0]);
#endif
/* Run the 128-bit tests */
ssse3_test_pmaddubsw128 (&vals[i + 0].m[0], &vals[i + 1].m[0], &r.m[0]);
fail += chk_128 (ck.m[0], r.m[0]);
}
if (fail != 0)
abort ();
}
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