gcc/testsuite/gcc.dg/vect/vect-iv-8-big-array.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7
   8 __attribute__ ((noinline)) int main1 (short X)
   9 {
  10   unsigned char a[N];
  11   unsigned short b[N];
  12   unsigned int c[N];
  13   short myX = X;
  14   int i;
  15
  16   /* vectorization of induction with type conversions.  */
  17   for (i = 0; i < N; i++)
  18   {
  19     a[i] = (unsigned char)X;
  20     b[i] = X;
  21     c[i] = (unsigned int)X;
  22     X++;
  23   }
  24
  25   /* check results:  */
  26 #pragma GCC novector
  27   for (i = 0; i < N; i++)
  28     {
  29       if (a[i] != (unsigned char)myX || b[i] != myX || c[i] != (unsigned int)myX++)
  30         abort ();
  31     }
  32
  33   return 0;
  34 }
  35
  36 int main (void)
  37 {
  38   check_vect ();
  39
  40   return main1 (3);
  41 }
  42
  43 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_pack_trunc && vect_unpack } } } } */