gcc/testsuite/gcc.dg/vect/vect-36.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 16
   8
   9 __attribute__ ((noinline))
  10 int main1 ()
  11 {
  12   int i;
  13   struct {
  14     char ca[N];
  15     char cb[N];
  16   } s;
  17
  18
  19   for (i = 0; i < N; i++)
  20     {
  21       s.cb[i] = 3*i;
  22       __asm__ volatile ("");
  23     }
  24
  25   for (i = 0; i < N; i++)
  26     {
  27       s.ca[i] = s.cb[i];
  28     }
  29
  30   /* check results:  */
  31 #pragma GCC novector
  32   for (i = 0; i < N; i++)
  33     {
  34       if (s.ca[i] != s.cb[i])
  35         abort ();
  36     }
  37
  38   return 0;
  39 }
  40
  41 int main (void)
  42 {
  43   check_vect ();
  44
  45   return main1 ();
  46 }
  47
  48 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  49 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */