gcc/testsuite/gcc.c-torture/execute/pr61375.c

   1 #ifdef __UINT64_TYPE__
   2 typedef __UINT64_TYPE__ uint64_t;
   3 #else
   4 typedef unsigned long long uint64_t;
   5 #endif
   6
   7 #ifndef __SIZEOF_INT128__
   8 #define __int128 long long
   9 #endif
  10
  11 /* Some version of bswap optimization would ICE when analyzing a mask constant
  12    too big for an uint64_t variable (PR210931).  */
  13
  14 __attribute__ ((noinline, noclone)) uint64_t
  15 uint128_central_bitsi_ior (unsigned __int128 in1, uint64_t in2)
  16 {
  17   __int128 mask = (__int128)0xffff << 56;
  18   return ((in1 & mask) >> 56) | in2;
  19 }
  20
  21 int
  22 main(int argc, char **argv)
  23 {
  24   __int128 in = 1;
  25 #ifdef __SIZEOF_INT128__
  26   in <<= 64;
  27 #endif
  28   if (sizeof (uint64_t) * __CHAR_BIT__ != 64)
  29     return 0;
  30   if (sizeof (unsigned __int128) * __CHAR_BIT__ != 128)
  31     return 0;
  32   if (uint128_central_bitsi_ior (in, 2) != 0x102)
  33     __builtin_abort ();
  34   return 0;
  35 }