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 #include "sse4_1-check.h"
   6
   7 #include <smmintrin.h>
   8
   9 #define NUM 64
  10
  11 static void
  12 sse4_1_test (void)
  13 {
  14   union
  15     {
  16       __m128i x[NUM / 8];
  17       unsigned short i[NUM];
  18     } dst, src1, src2;
  19   int i;
  20   unsigned short max;
  21
  22   for (i = 0; i < NUM; i++)
  23     {
  24       src1.i[i] = i * i;
  25       src2.i[i] = i + 20;
  26       if ((i % 8))
  27         src2.i[i] |= 0x8000;
  28     }
  29
  30   for (i = 0; i < NUM; i += 8)
  31     dst.x[i / 8] = _mm_max_epu16 (src1.x[i / 8], src2.x[i / 8]);
  32
  33   for (i = 0; i < NUM; i++)
  34     {
  35       max = src1.i[i] <= src2.i[i] ? src2.i[i] : src1.i[i];
  36       if (max != dst.i[i])
  37         abort ();
  38     }
  39 }