gcc/testsuite/gcc.dg/vect/vect-28.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7 #define OFF 3
   8
   9 /* unaligned store.  */
  10
  11 __attribute__ ((noinline))
  12 int main1 (int off)
  13 {
  14   int i;
  15   int ia[N+OFF];
  16
  17   for (i = 0; i < N; i++)
  18     {
  19       ia[i+off] = 5;
  20     }
  21
  22   /* check results:  */
  23   for (i = 0; i < N; i++)
  24     {
  25       if (ia[i+off] != 5)
  26         abort ();
  27     }
  28
  29   return 0;
  30 }
  31
  32 int main (void)
  33 {
  34   check_vect ();
  35
  36   main1 (0); /* aligned */
  37   main1 (OFF); /* unaligned */
  38   return 0;
  39 }
  40
  41 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  } } */
  42 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */
  43 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 1 "vect" { target vector_alignment_reachable } } } */
  44 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 1 "vect" { target { ! vector_alignment_reachable } } } } */
  45 /* { dg-final { cleanup-tree-dump "vect" } } */