gcc/testsuite/gcc.dg/vect/vect-35.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 typedef char achar __attribute__ ((__aligned__(16)));
   7
   8 #define N 16
   9 achar x[N];
  10
  11 int main1 ()
  12 {
  13   union {
  14     achar a[N];
  15     achar b[N];
  16   } s;
  17   int i;
  18
  19   for (i = 0; i < N; i++)
  20     {
  21       s.b[i] = 3*i;
  22     }
  23
  24   for (i = 0; i < N; i++)
  25     {
  26       s.a[i] = s.b[i] + 1;
  27     }
  28
  29   /* check results:  */
  30   for (i = 0; i < N; i++)
  31     {
  32       if (s.a[i] != s.b[i])
  33         abort ();
  34     }
  35
  36   return 0;
  37 }
  38
  39 int main (void)
  40 {
  41   check_vect ();
  42
  43   return main1 ();
  44 }
  45
  46
  47 /* { dg-final { scan-tree-dump-times "vectorized 0 loops" 1 "vect" } } */
  48 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */