gcc/testsuite/gcc.dg/vect/vect-align-1.c

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