gcc/testsuite/gcc.c-torture/execute/pr65215-2.c

   1 /* PR tree-optimization/65215 */
   2
   3 static inline unsigned int
   4 foo (unsigned int x)
   5 {
   6   return (x >> 24) | ((x >> 8) & 0xff00) | ((x << 8) & 0xff0000) | (x << 24);
   7 }
   8
   9 __attribute__((noinline, noclone)) unsigned long long
  10 bar (unsigned long long *x)
  11 {
  12   return ((unsigned long long) foo (*x) << 32) | foo (*x >> 32);
  13 }
  14
  15 int
  16 main ()
  17 {
  18   if (__CHAR_BIT__ != 8 || sizeof (unsigned int) != 4 || sizeof (unsigned long long) != 8)
  19     return 0;
  20   unsigned long long l = foo (0xfeedbea8U) | ((unsigned long long) foo (0xdeadbeefU) << 32);
  21   if (bar (&l) != 0xfeedbea8deadbeefULL)
  22     __builtin_abort ();
  23   return 0;
  24 }