gcc/testsuite/gcc.target/powerpc/ssse3-pshufb.c

/* { 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_pshufb (__m64 *i1, __m64 *i2, __m64 *r)
{
  *r = _mm_shuffle_pi8 (*i1, *i2);
  _mm_empty ();
}
#endif

/* Test the 128-bit form */
static void
ssse3_test_pshufb128 (__m128i *i1, __m128i *i2, __m128i *r)
{
  /* Assumes incoming pointers are 16-byte aligned */
  *r = _mm_shuffle_epi8 (*i1, *i2);
}

#ifndef __AVX__
/* Routine to manually compute the results */
static void
compute_correct_result_64 (signed char *i1, signed char *i2, signed char *r)
{
  int i;
  char select;

  for (i = 0; i < 16; i++)
    {
      select = i2[i];
      if (select & 0x80)
	r[i] = 0;
      else if (i < 8)
	r[i] = i1[select & 0x7];
      else
	r[i] = i1[8 + (select & 0x7)];
    }
}
#endif

static void
compute_correct_result_128 (signed char *i1, signed char *i2, signed char *r)
{
  int i;
  char select;

  for (i = 0; i < 16; i++)
    {
      select = i2[i];
      if (select & 0x80)
	r[i] = 0;
      else
	r[i] = i1[select & 0xf];
    }
}

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++)
    {
#ifndef __AVX__
      /* Manually compute the result */
      compute_correct_result_64 (&vals[i + 0].b[0], &vals[i + 1].b[0], &ck.b[0]);

      /* Run the 64-bit tests */
      ssse3_test_pshufb (&vals[i + 0].ll[0], &vals[i + 1].ll[0], &r.ll[0]);
      ssse3_test_pshufb (&vals[i + 0].ll[1], &vals[i + 1].ll[1], &r.ll[1]);
      fail += chk_128 (ck.m[0], r.m[0]);
#endif

      /* Recompute the result for 128-bits */
      compute_correct_result_128 (&vals[i + 0].b[0], &vals[i + 1].b[0], &ck.b[0]);

      /* Run the 128-bit tests */
      ssse3_test_pshufb128 (&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 ();
}