gcc/testsuite/gcc.target/powerpc/sse2-psubsb-1.c

/* { dg-do run } */
/* { dg-options "-O3 -mpower8-vector -Wno-psabi" } */
/* { dg-require-effective-target p8vector_hw } */

#ifndef CHECK_H
#define CHECK_H "sse2-check.h"
#endif

#include CHECK_H

#ifndef TEST
#define TEST sse2_test_psubsb_1
#endif

#include <emmintrin.h>

static __m128i
__attribute__((noinline, unused))
test (__m128i s1, __m128i s2)
{
  __asm("" : "+v"(s1), "+v"(s2));
  return _mm_subs_epi8 (s1, s2); 
}

static void
TEST (void)
{
  union128i_b u, s1, s2;
  char e[16];
  int i, tmp;
   
  s1.x = _mm_set_epi8 (1,2,3,4,10,20,30,90,-80,-40,-100,-15,98, 25, 98,7);
  s2.x = _mm_set_epi8 (88, 44, 33, 22, 11, 98, 76, -100, -34, -78, -39, 6, 3, 4, 5, 119);
  u.x = test (s1.x, s2.x); 
   
  for (i = 0; i < 16; i++)
    {
      tmp = (signed char)s1.a[i] - (signed char)s2.a[i];

      if (tmp > 127)
        tmp = 127;
      if (tmp < -128)
        tmp = -128;

      e[i] = tmp;
    }

  if (check_union128i_b (u, e))
    abort ();
}