gcc/testsuite/gcc.dg/vect/vect-2-big-array.c

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