gcc/testsuite/gcc.target/powerpc/mmx-psubusb-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -mpower8-vector" } */
   3 /* { dg-require-effective-target lp64 } */
   4 /* { dg-require-effective-target p8vector_hw } */
   5
   6 #define NO_WARN_X86_INTRINSICS 1
   7 #ifndef CHECK_H
   8 #define CHECK_H "mmx-check.h"
   9 #endif
  10
  11 #ifndef TEST
  12 #define TEST mmx_test
  13 #endif
  14
  15 #include CHECK_H
  16
  17 #include <mmintrin.h>
  18
  19 static __m64
  20 __attribute__((noinline, unused))
  21 test (__m64 s1, __m64 s2)
  22 {
  23   return _mm_subs_pu8 (s1, s2);
  24 }
  25
  26 static void
  27 TEST (void)
  28 {
  29   __m64_union u, s1, s2;
  30   __m64_union e;
  31   int i, tmp;
  32
  33   s1.as_m64 = _mm_set_pi8 (30, 2, 3, 4, 10, 20, 30, 90);
  34   s2.as_m64 = _mm_set_pi8 (88, 44, 3, 22, 11, 98, 76, 100);
  35   u.as_m64 = test (s1.as_m64, s2.as_m64);
  36
  37   for (i = 0; i < 8; i++)
  38     {
  39       tmp = s1.as_char[i] - s2.as_char[i];
  40
  41       if (tmp > 255)
  42         tmp = -1;
  43       if (tmp < 0)
  44         tmp = 0;
  45
  46       e.as_char[i] = tmp;
  47     }
  48
  49   if (u.as_m64 != e.as_m64)
  50     abort ();
  51 }