gcc-4_9-branch/gcc/testsuite/gcc.dg/vect/vect-peel-4.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7
   8 int ib[N+7];
   9 int ia[N+1];
  10
  11 __attribute__ ((noinline))
  12 int main1 ()
  13 {
  14   int i;
  15
  16   /* Don't peel keeping one load and the store aligned.  */
  17   for (i = 0; i <= N; i++)
  18     {
  19       ia[i] = ib[i] + ib[i+5];
  20     }
  21
  22   /* check results:  */
  23   for (i = 1; i <= N; i++)
  24     {
  25       if (ia[i] != ib[i] + ib[i+5])
  26         abort ();
  27     }
  28
  29   return 0;
  30 }
  31
  32 int main (void)
  33 {
  34   int i;
  35
  36   check_vect ();
  37
  38   for (i = 0; i <= N+6; i++)
  39     {
  40       asm volatile ("" : "+r" (i));
  41       ib[i] = i;
  42     }
  43
  44   return main1 ();
  45 }
  46
  47 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */
  48 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 1 "vect"  { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */
  49 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" } } */
  50 /* { dg-final { cleanup-tree-dump "vect" } } */