gcc/testsuite/gcc.dg/vect/vect-73-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 int ic[N*2];
  11 int ib[N];
  12
  13 #define ia (ic+N)
  14
  15 __attribute__ ((noinline))
  16 int main1 ()
  17 {
  18   int i, j;
  19
  20   for (i = 0; i < N; i++)
  21     {
  22       ib[i] = i*3;
  23       asm volatile ("" ::: "memory");
  24     }
  25
  26   for (i = 0; i < N; i++)
  27     {
  28        ia[i] = ib[i];
  29     }
  30
  31   /* check results: */
  32 #pragma GCC novector
  33   for (i = 0; i < N; i++)
  34     {
  35        if (ia[i] != ib[i])
  36          abort ();
  37     }
  38
  39   return 0;
  40 }
  41
  42 int main (void)
  43 {
  44   check_vect ();
  45
  46   return main1 ();
  47 }
  48
  49 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  50 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */
  51 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */