gcc/testsuite/gcc.target/i386/sse2-psubw-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -msse2" } */
   3 /* { dg-require-effective-target sse2 } */
   4
   5 #ifndef CHECK_H
   6 #define CHECK_H "sse2-check.h"
   7 #endif
   8
   9 #ifndef TEST
  10 #define TEST sse2_test
  11 #endif
  12
  13 #include CHECK_H
  14
  15 #include <emmintrin.h>
  16
  17 static __m128i
  18 __attribute__((noinline, unused))
  19 test (__m128i s1, __m128i s2)
  20 {
  21   return _mm_sub_epi16 (s1, s2);
  22 }
  23
  24 static void
  25 TEST (void)
  26 {
  27   union128i_w u, s1, s2;
  28   short e[8];
  29   int i;
  30
  31   s1.x = _mm_set_epi16 (10,20,30,90,-80,-40,-100,-15);
  32   s2.x = _mm_set_epi16 (11, 98, 76, -100, -34, -78, -39, 14);
  33   u.x = test (s1.x, s2.x);
  34
  35   for (i = 0; i < 8; i++)
  36      e[i] = s1.a[i] - s2.a[i];
  37
  38   if (check_union128i_w (u, e))
  39     abort ();
  40 }