gcc/testsuite/gcc.dg/vect/pr37539.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 __attribute__ ((noinline)) void
   7 ayuv2yuyv_ref (int *d, int *src, int n)
   8 {
   9   char *dest = (char *)d;
  10   int i;
  11
  12   for(i=0;i<n/2;i++){
  13     dest[i*4 + 0] = (src[i*2 + 0])>>16;
  14     dest[i*4 + 1] = (src[i*2 + 1])>>8;
  15     dest[i*4 + 2] = (src[i*2 + 0])>>16;
  16     dest[i*4 + 3] = (src[i*2 + 0])>>0;
  17   }
  18
  19   /* Check results.  */
  20 #pragma GCC novector
  21   for(i=0;i<n/2;i++){
  22    if (dest[i*4 + 0] != (src[i*2 + 0])>>16
  23        || dest[i*4 + 1] != (src[i*2 + 1])>>8
  24        || dest[i*4 + 2] != (src[i*2 + 0])>>16
  25        || dest[i*4 + 3] != (src[i*2 + 0])>>0)
  26      abort();
  27   }
  28 }
  29
  30 int main ()
  31 {
  32   int d[256], src[128], i;
  33
  34   check_vect ();
  35
  36   for (i = 0; i < 128; i++)
  37     src[i] = i;
  38
  39   ayuv2yuyv_ref(d, src, 128);
  40
  41   return 0;
  42 }
  43
  44 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target { vect_strided4 && vect_strided2 } } } } */
  45
  46
  47