gcc/testsuite/gcc.target/i386/sse4_1-pmovsxbw.c

   1 /* { dg-do run } */
   2 /* { dg-require-effective-target sse4 } */
   3 /* { dg-options "-O2 -msse4.1" } */
   4
   5 #ifndef CHECK_H
   6 #define CHECK_H "sse4_1-check.h"
   7 #endif
   8
   9 #ifndef TEST
  10 #define TEST sse4_1_test
  11 #endif
  12
  13 #include CHECK_H
  14
  15 #include <smmintrin.h>
  16
  17 #define NUM 128
  18
  19 static void
  20 TEST (void)
  21 {
  22   union
  23     {
  24       __m128i x[NUM / 8];
  25       short s[NUM];
  26       char c[NUM * 2];
  27     } dst, src;
  28   int i, sign = 1;
  29
  30   for (i = 0; i < NUM; i++)
  31     {
  32       src.c[(i % 8) + (i / 8) * 16] = i * i * sign;
  33       sign = -sign;
  34     }
  35
  36   for (i = 0; i < NUM; i += 8)
  37     dst.x [i / 8] = _mm_cvtepi8_epi16 (src.x [i / 8]);
  38
  39   for (i = 0; i < NUM; i++)
  40     if (src.c[(i % 8) + (i / 8) * 16] != dst.s[i])
  41       abort ();
  42 }