gnu/dist/gcc4/gcc/testsuite/gcc.dg/vect/vect-29.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 load.  */
  10
  11 int main1 (int off)
  12 {
  13   int i;
  14   int ia[N];
  15   int ib[N+OFF];
  16
  17   for (i = 0; i < N+OFF; i++)
  18     {
  19       ib[i] = i;
  20     }
  21
  22   for (i = 0; i < N; i++)
  23     {
  24       ia[i] = ib[i+off];
  25     }
  26
  27   /* check results:  */
  28   for (i = 0; i < N; i++)
  29     {
  30       if (ia[i] != ib[i+off])
  31         abort ();
  32     }
  33
  34   return 0;
  35 }
  36
  37 int main (void)
  38 {
  39   check_vect ();
  40
  41   main1 (0); /* aligned */
  42   main1 (OFF); /* unaligned */
  43   return 0;
  44 }
  45
  46 /* For targets that don't support misaligned loads we version for the load.
  47    (The store is aligned).  */
  48
  49 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  50 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 1 "vect" { xfail vect_no_align } } } */
  51 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" } } */
  52 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 1 "vect" {target vect_no_align } } } */
  53 /* { dg-final { cleanup-tree-dump "vect" } } */