gcc/testsuite/gcc.target/i386/sse4_1-pmaxuw.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 64
  18
  19 static void
  20 TEST (void)
  21 {
  22   union
  23     {
  24       __m128i x[NUM / 8];
  25       unsigned short i[NUM];
  26     } dst, src1, src2;
  27   int i;
  28   unsigned short max;
  29
  30   for (i = 0; i < NUM; i++)
  31     {
  32       src1.i[i] = i * i;
  33       src2.i[i] = i + 20;
  34       if ((i % 8))
  35         src2.i[i] |= 0x8000;
  36     }
  37
  38   for (i = 0; i < NUM; i += 8)
  39     dst.x[i / 8] = _mm_max_epu16 (src1.x[i / 8], src2.x[i / 8]);
  40
  41   for (i = 0; i < NUM; i++)
  42     {
  43       max = src1.i[i] <= src2.i[i] ? src2.i[i] : src1.i[i];
  44       if (max != dst.i[i])
  45         abort ();
  46     }
  47 }