gcc/testsuite/gcc.dg/vect/vect-29.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-add-options bind_pic_locally } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N 128
   8 #define OFF 3
   9
  10 /* unaligned load.  */
  11
  12 int ia[N];
  13 int ib[N+OFF];
  14
  15 __attribute__ ((noinline))
  16 int main1 (int off)
  17 {
  18   int i;
  19
  20   for (i = 0; i < N+OFF; i++)
  21     {
  22       ib[i] = i;
  23     }
  24
  25   for (i = 0; i < N; i++)
  26     {
  27       ia[i] = ib[i+off];
  28     }
  29
  30   /* check results:  */
  31   for (i = 0; i < N; i++)
  32     {
  33       if (ia[i] != ib[i+off])
  34         abort ();
  35     }
  36
  37   return 0;
  38 }
  39
  40 int main (void)
  41 {
  42   check_vect ();
  43
  44   main1 (0); /* aligned */
  45   main1 (OFF); /* unaligned */
  46   return 0;
  47 }
  48
  49 /* For targets that don't support misaligned loads we version for the load.
  50    (The store is aligned).  */
  51
  52 /* The initialization induction loop (with aligned access) is also vectorized.  */
  53 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" } } */
  54 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 1 "vect" { xfail { ! vect_unaligned_possible } } } } */
  55 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" } } */
  56 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 1 "vect" {target { vect_no_align && { ! vect_hw_misalign } } } } } */