1662 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check");
1663 }
1664 Label profile_cast_success, profile_cast_failure;
1665 Label *success_target = op->should_profile() ? &profile_cast_success : success;
1666 Label *failure_target = op->should_profile() ? &profile_cast_failure : failure;
1667
1668 if (obj == k_RInfo) {
1669 k_RInfo = dst;
1670 } else if (obj == klass_RInfo) {
1671 klass_RInfo = dst;
1672 }
1673 if (k->is_loaded() && !UseCompressedClassPointers) {
1674 select_different_registers(obj, dst, k_RInfo, klass_RInfo);
1675 } else {
1676 Rtmp1 = op->tmp3()->as_register();
1677 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1);
1678 }
1679
1680 assert_different_registers(obj, k_RInfo, klass_RInfo);
1681
1682 __ cmpptr(obj, (int32_t)NULL_WORD);
1683 if (op->should_profile()) {
1684 Label not_null;
1685 __ jccb(Assembler::notEqual, not_null);
1686 // Object is null; update MDO and exit
1687 Register mdo = klass_RInfo;
1688 __ mov_metadata(mdo, md->constant_encoding());
1689 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::flags_offset()));
1690 int header_bits = BitData::null_seen_byte_constant();
1691 __ orb(data_addr, header_bits);
1692 __ jmp(*obj_is_null);
1693 __ bind(not_null);
1694 } else {
1695 __ jcc(Assembler::equal, *obj_is_null);
1696 }
1697
1698 if (!k->is_loaded()) {
1699 klass2reg_with_patching(k_RInfo, op->info_for_patch());
1700 } else {
1701 #ifdef _LP64
1702 __ mov_metadata(k_RInfo, k->constant_encoding());
1703 #endif // _LP64
1704 }
1705 __ verify_oop(obj);
1706
1707 if (op->fast_check()) {
1708 // get object class
1709 // not a safepoint as obj null check happens earlier
1710 #ifdef _LP64
1711 if (UseCompressedClassPointers) {
1712 __ load_klass(Rtmp1, obj);
1713 __ cmpptr(k_RInfo, Rtmp1);
1714 } else {
1715 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes()));
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1662 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check");
1663 }
1664 Label profile_cast_success, profile_cast_failure;
1665 Label *success_target = op->should_profile() ? &profile_cast_success : success;
1666 Label *failure_target = op->should_profile() ? &profile_cast_failure : failure;
1667
1668 if (obj == k_RInfo) {
1669 k_RInfo = dst;
1670 } else if (obj == klass_RInfo) {
1671 klass_RInfo = dst;
1672 }
1673 if (k->is_loaded() && !UseCompressedClassPointers) {
1674 select_different_registers(obj, dst, k_RInfo, klass_RInfo);
1675 } else {
1676 Rtmp1 = op->tmp3()->as_register();
1677 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1);
1678 }
1679
1680 assert_different_registers(obj, k_RInfo, klass_RInfo);
1681
1682 if (op->need_null_check()) {
1683 __ cmpptr(obj, (int32_t)NULL_WORD);
1684 if (op->should_profile()) {
1685 Label not_null;
1686 __ jccb(Assembler::notEqual, not_null);
1687 // Object is null; update MDO and exit
1688 Register mdo = klass_RInfo;
1689 __ mov_metadata(mdo, md->constant_encoding());
1690 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::flags_offset()));
1691 int header_bits = BitData::null_seen_byte_constant();
1692 __ orb(data_addr, header_bits);
1693 __ jmp(*obj_is_null);
1694 __ bind(not_null);
1695 } else {
1696 __ jcc(Assembler::equal, *obj_is_null);
1697 }
1698 }
1699
1700 if (!k->is_loaded()) {
1701 klass2reg_with_patching(k_RInfo, op->info_for_patch());
1702 } else {
1703 #ifdef _LP64
1704 __ mov_metadata(k_RInfo, k->constant_encoding());
1705 #endif // _LP64
1706 }
1707 __ verify_oop(obj);
1708
1709 if (op->fast_check()) {
1710 // get object class
1711 // not a safepoint as obj null check happens earlier
1712 #ifdef _LP64
1713 if (UseCompressedClassPointers) {
1714 __ load_klass(Rtmp1, obj);
1715 __ cmpptr(k_RInfo, Rtmp1);
1716 } else {
1717 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes()));
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