gcc/testsuite/gcc.dg/pr98190.c

   1 /* PR middle-end/98190 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2" } */
   4
   5 static int __attribute__((noipa))
   6 foo (const char *p, const char *q, const int len)
   7 {
   8   for (int i = 0; i < len; p++, q++, i++)
   9     {
  10       int equal;
  11       _Bool x, y;
  12       __builtin_memcpy ((char *) &x, p, sizeof x);
  13       __builtin_memcpy ((char *) &y, q, sizeof y);
  14       equal = (x == y);
  15       if (equal <= 0)
  16         return equal;
  17     }
  18   return 1;
  19 }
  20
  21 int
  22 main ()
  23 {
  24   const _Bool buf[4] = { 1, 0, 0, 0 };
  25 #ifdef __aarch64__
  26   register long x4 asm ("x4") = 0xdeadbeefULL;
  27   register long x5 asm ("x5") = 0xcafebabeULL;
  28   asm volatile (""::"r" (x4), "r" (x5));
  29 #endif
  30   if (foo ((char *) &buf[0], (char *) &buf[0], 1) != 1)
  31     __builtin_abort ();
  32   return 0;
  33 }