4028   generate_slow_guard(test_unlocked, slow_region);

  4028   generate_slow_guard(test_unlocked, slow_region);

  4029 

  4029 

  4030   // Get the hash value and check to see that it has been properly assigned.

  4030   // Get the hash value and check to see that it has been properly assigned.

  4031   // We depend on hash_mask being at most 32 bits and avoid the use of

  4031   // We depend on hash_mask being at most 32 bits and avoid the use of

  4032   // hash_mask_in_place because it could be larger than 32 bits in a 64-bit

  4032   // hash_mask_in_place because it could be larger than 32 bits in a 64-bit

  4034   Node *hash_mask      = _gvn.intcon(markWord::hash_mask);

  4034   Node *hash_mask      = _gvn.intcon(markWord::hash_mask);

  4035   Node *hash_shift     = _gvn.intcon(markWord::hash_shift);

  4035   Node *hash_shift     = _gvn.intcon(markWord::hash_shift);

  4036   Node *hshifted_header= _gvn.transform(new URShiftXNode(header, hash_shift));

  4036   Node *hshifted_header= _gvn.transform(new URShiftXNode(header, hash_shift));

  4037   // This hack lets the hash bits live anywhere in the mark object now, as long

  4037   // This hack lets the hash bits live anywhere in the mark object now, as long

  4038   // as the shift drops the relevant bits into the low 32 bits.  Note that

  4038   // as the shift drops the relevant bits into the low 32 bits.  Note that