gcc/testsuite/c-c++-common/rotate-5.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2" } */
   3
   4 extern
   5 #ifdef __cplusplus
   6 "C"
   7 #endif
   8 void abort (void);
   9
  10 #if __CHAR_BIT__ * __SIZEOF_LONG_LONG__ == 64
  11 __attribute__((noinline, noclone))
  12 unsigned long long
  13 f1 (unsigned long long x, unsigned int y)
  14 {
  15   return (x << y) | (x >> ((-y) & 63));
  16 }
  17
  18 #if __CHAR_BIT__ * __SIZEOF_INT128__ == 128
  19 __attribute__((noinline, noclone))
  20 unsigned __int128
  21 f2 (unsigned __int128 x, unsigned int y)
  22 {
  23   return (x << y) | (x >> ((-y) & 128));
  24 }
  25 #endif
  26 #endif
  27
  28 int
  29 main ()
  30 {
  31 #if __CHAR_BIT__ * __SIZEOF_LONG_LONG__ == 64
  32   if (f1 (0x123456789abcdef0ULL, 0) != 0x123456789abcdef0ULL)
  33     abort ();
  34 #if __CHAR_BIT__ * __SIZEOF_INT128__ == 128
  35   if (f2 ((((unsigned __int128) 0x123456789abcdef0ULL) << 64)
  36           | 0x0fedcba987654321ULL, 0)
  37       != ((((unsigned __int128) 0x123456789abcdef0ULL) << 64)
  38           | 0x0fedcba987654321ULL))
  39     abort ();
  40 #endif
  41 #endif
  42   return 0;
  43 }