gcc/testsuite/gcc.dg/vect/vect-77-global.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 8
   7 #define OFF 8
   8
   9 /* Check handling of accesses for which the "initial condition" -
  10    the expression that represents the first location accessed - is
  11    more involved than just an ssa_name.  */
  12
  13 int ib[N+OFF] __attribute__ ((__aligned__(16))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
  14 int ia[N];
  15
  16 __attribute__ ((noinline))
  17 int main1 (int *ib, int off)
  18 {
  19   int i;
  20
  21   for (i = 0; i < N; i++)
  22     {
  23       ia[i] = ib[i+off];
  24     }
  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 (ib, 8);
  42   return 0;
  43 }
  44
  45 /* For targets that don't support misaligned loads we version for the load.
  46    (The store is aligned).  */
  47 /* Requires versioning for aliasing.  */
  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" } } */