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

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -mvsx -Wno-psabi" } */
   3 /* { dg-additional-options "-mdejagnu-cpu=power8" { target { ! has_arch_pwr8 } } } */
   4 /* { dg-require-effective-target p8vector_hw } */
   5
   6 #ifndef CHECK_H
   7 #define CHECK_H "sse2-check.h"
   8 #endif
   9
  10 #include CHECK_H
  11
  12 #ifndef TEST
  13 #define TEST sse2_test_psubsb_1
  14 #endif
  15
  16 #include <emmintrin.h>
  17
  18 static __m128i
  19 __attribute__((noinline, unused))
  20 test (__m128i s1, __m128i s2)
  21 {
  22   __asm("" : "+v"(s1), "+v"(s2));
  23   return _mm_subs_epi8 (s1, s2);
  24 }
  25
  26 static void
  27 TEST (void)
  28 {
  29   union128i_b u, s1, s2;
  30   char e[16];
  31   int i, tmp;
  32
  33   s1.x = _mm_set_epi8 (1,2,3,4,10,20,30,90,-80,-40,-100,-15,98, 25, 98,7);
  34   s2.x = _mm_set_epi8 (88, 44, 33, 22, 11, 98, 76, -100, -34, -78, -39, 6, 3, 4, 5, 119);
  35   u.x = test (s1.x, s2.x);
  36
  37   for (i = 0; i < 16; i++)
  38     {
  39       tmp = (signed char)s1.a[i] - (signed char)s2.a[i];
  40
  41       if (tmp > 127)
  42         tmp = 127;
  43       if (tmp < -128)
  44         tmp = -128;
  45
  46       e[i] = tmp;
  47     }
  48
  49   if (check_union128i_b (u, e))
  50     abort ();
  51 }