gcc/testsuite/gcc.dg/vect/vect-15-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 volatile int y = 0;
   9
  10 __attribute__ ((noinline))
  11 int main1 ()
  12 {
  13   int i;
  14   int a[N];
  15   int b[N];
  16
  17   for (i = 0; i <N; i++)
  18     {
  19       b[i] = i*3;
  20       if (y)
  21         abort ();
  22     }
  23
  24   /* Not vectorizable yet (reverse access and forward access).  */
  25   for (i = N; i > 0; i--)
  26     {
  27       a[N-i] = b[i-1];
  28     }
  29
  30   /* check results:  */
  31   for (i = 0; i <N; i++)
  32     {
  33       if (a[i] != b[N-1-i])
  34         abort ();
  35     }
  36
  37   return 0;
  38 }
  39
  40 int main (void)
  41 {
  42   check_vect ();
  43
  44   return main1 ();
  45 }
  46
  47 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_perm && vect_hw_misalign } } } } */