gcc/testsuite/gcc.target/i386/sse2-packsswb-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_packs_epi16 (s1, s2);
  22 }
  23
  24 static void
  25 TEST (void)
  26 {
  27   union128i_w s1, s2;
  28   union128i_b u;
  29   char e[16];
  30   int i;
  31
  32   s1.x = _mm_set_epi16 (2134, -128, 1234, 6354, 1002, 3004, 4050, 9999);
  33   s2.x = _mm_set_epi16 (41124, 234, 2344, 2354, 607, 1, 2, -8009);
  34   u.x = test (s1.x, s2.x);
  35
  36   for (i = 0; i < 8; i++)
  37     {
  38       if (s1.a[i] > 127)
  39         e[i] = 127;
  40       else if (s1.a[i] < -128)
  41         e[i] = -128;
  42       else
  43         e[i] = s1.a[i];
  44     }
  45
  46   for (i = 0; i < 8; i++)
  47    {
  48       if (s2.a[i] > 127)
  49         e[i+8] = 127;
  50       else if (s2.a[i] < -128)
  51         e[i+8] = -128;
  52       else
  53         e[i+8] = s2.a[i];
  54     }
  55
  56   if (check_union128i_b (u, e))
  57     abort ();
  58 }