vect-align-1.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdlib.h>
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 /* Compile time known misalignment. Cannot use loop peeling to align
   8    the store.  */
   9
  10 #define N 16
  11
  12 struct foo {
  13   char x;
  14   int y[N];
  15 } __attribute__((packed));
  16
  17 int x[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  18
  19 __attribute__ ((noinline)) int
  20 main1 (struct foo * __restrict__ p)
  21 {
  22   int i;
  23
  24   for (i = 0; i < N; i++)
  25     {
  26       p->y[i] = x[i];
  27     }
  28
  29   /* check results:  */
  30   for (i = 0; i < N; i++)
  31     {
  32       if (p->y[i] != x[i])
  33         abort ();
  34     }
  35   return 0;
  36 }
  37
  38
  39 int main (void)
  40 {
  41   int i;
  42   struct foo *p = malloc (2*sizeof (struct foo));
  43   check_vect ();
  44
  45   main1 (p);
  46   return 0;
  47 }
  48
  49 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 1 "vect" { target vect_hw_misalign } } } */
  50 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 1 "vect" { xfail vect_hw_misalign} } } */
  51 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  52 /* { dg-final { cleanup-tree-dump "vect" } } */