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

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