Viewing file:  ssse3-pshufb.c (2.15 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-require-effective-target ssse3 } */
/* { dg-options "-O2 -fno-strict-aliasing -mssse3" } */
#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>
/* Test the 64-bit form */
static void
ssse3_test_pshufb (int *i1, int *i2, int *r)
{
__m64 t1 = *(__m64 *) i1;
__m64 t2 = *(__m64 *) i2;
*(__m64 *)r = _mm_shuffle_pi8 (t1, t2);
_mm_empty ();
}
/* Test the 128-bit form */
static void
ssse3_test_pshufb128 (int *i1, int *i2, int *r)
{
/* Assumes incoming pointers are 16-byte aligned */
__m128i t1 = *(__m128i *) i1;
__m128i t2 = *(__m128i *) i2;
*(__m128i *)r = _mm_shuffle_epi8 (t1, t2);
}
/* Routine to manually compute the results */
static void
compute_correct_result_64 (int *i1, int *i2, int *r)
{
char *b1 = (char *) i1;
char *b2 = (char *) i2;
char *bout = (char *) r;
int i;
char select;
for (i = 0; i < 16; i++)
{
select = b2[i];
if (select & 0x80)
bout[i] = 0;
else if (i < 8)
bout[i] = b1[select & 0x7];
else
bout[i] = b1[8 + (select & 0x7)];
}
}
static void
compute_correct_result_128 (int *i1, int *i2, int *r)
{
char *b1 = (char *) i1;
char *b2 = (char *) i2;
char *bout = (char *) r;
int i;
char select;
for (i = 0; i < 16; i++)
{
select = b2[i];
if (select & 0x80)
bout[i] = 0;
else
bout[i] = b1[select & 0xf];
}
}
static void
TEST (void)
{
int i;
int r [4] __attribute__ ((aligned(16)));
int ck [4];
int fail = 0;
for (i = 0; i < 256; i += 8)
{
/* Manually compute the result */
compute_correct_result_64 (&vals[i + 0], &vals[i + 4], ck);
/* Run the 64-bit tests */
ssse3_test_pshufb (&vals[i + 0], &vals[i + 4], &r[0]);
ssse3_test_pshufb (&vals[i + 2], &vals[i + 6], &r[2]);
fail += chk_128 (ck, r);
/* Recompute the result for 128-bits */
compute_correct_result_128 (&vals[i + 0], &vals[i + 4], ck);
/* Run the 128-bit tests */
ssse3_test_pshufb128 (&vals[i + 0], &vals[i + 4], r);
fail += chk_128 (ck, r);
}
if (fail != 0)
abort ();
}
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