gcc/testsuite/gcc.dg/vect/pr48377.c

   1 /* PR tree-optimization/48377 */
   2 /* { dg-require-effective-target non_strict_align } */
   3
   4 #include "tree-vect.h"
   5
   6 typedef unsigned int U __attribute__((__aligned__ (1), __may_alias__));
   7
   8 __attribute__((noinline, noclone)) unsigned int
   9 foo (const char *s, int len)
  10 {
  11   const U *p = (const U *) s;
  12   unsigned int f = len / sizeof (unsigned int), hash = len, i;
  13
  14   for (i = 0; i < f; ++i)
  15     hash += *p++;
  16   return hash;
  17 }
  18
  19 char buf[64] __attribute__((aligned (32)));
  20
  21 int
  22 main (void)
  23 {
  24   check_vect ();
  25   return foo (buf + 1, 26) != 26;
  26 }
  27