gcc/testsuite/gcc.dg/vect/vect-34-big-array.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-additional-options "-fdump-tree-optimized-details-blocks" } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N 128
   8
   9 struct {
  10   char ca[N];
  11 } s;
  12 char cb[N];
  13
  14 __attribute__ ((noinline))
  15 int main1 ()
  16 {
  17   int i;
  18
  19   for (i = 0; i < N; i++)
  20     {
  21       cb[i] = i*3;
  22       asm volatile ("" ::: "memory");
  23     }
  24   for (i = 0; i < N; i++)
  25     {
  26       s.ca[i] = cb[i];
  27     }
  28
  29   /* check results:  */
  30 #pragma GCC novector
  31   for (i = 0; i < N; i++)
  32     {
  33       if (s.ca[i] != cb[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" } } */
  48 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */