4031 }
4032 } // original reexecute is set back here
4033
4034 C->set_has_split_ifs(true); // Has chance for split-if optimization
4035 if (!stopped()) {
4036 set_result(newcopy);
4037 }
4038 return true;
4039 }
4040
4041
4042 //----------------------generate_virtual_guard---------------------------
4043 // Helper for hashCode and clone. Peeks inside the vtable to avoid a call.
4044 Node* LibraryCallKit::generate_virtual_guard(Node* obj_klass,
4045 RegionNode* slow_region) {
4046 ciMethod* method = callee();
4047 int vtable_index = method->vtable_index();
4048 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index,
4049 "bad index %d", vtable_index);
4050 // Get the Method* out of the appropriate vtable entry.
4051 int entry_offset = (InstanceKlass::vtable_start_offset() +
4052 vtable_index*vtableEntry::size()) * wordSize +
4053 vtableEntry::method_offset_in_bytes();
4054 Node* entry_addr = basic_plus_adr(obj_klass, entry_offset);
4055 Node* target_call = make_load(NULL, entry_addr, TypePtr::NOTNULL, T_ADDRESS, MemNode::unordered);
4056
4057 // Compare the target method with the expected method (e.g., Object.hashCode).
4058 const TypePtr* native_call_addr = TypeMetadataPtr::make(method);
4059
4060 Node* native_call = makecon(native_call_addr);
4061 Node* chk_native = _gvn.transform(new CmpPNode(target_call, native_call));
4062 Node* test_native = _gvn.transform(new BoolNode(chk_native, BoolTest::ne));
4063
4064 return generate_slow_guard(test_native, slow_region);
4065 }
4066
4067 //-----------------------generate_method_call----------------------------
4068 // Use generate_method_call to make a slow-call to the real
4069 // method if the fast path fails. An alternative would be to
4070 // use a stub like OptoRuntime::slow_arraycopy_Java.
4071 // This only works for expanding the current library call,
4072 // not another intrinsic. (E.g., don't use this for making an
|
4031 }
4032 } // original reexecute is set back here
4033
4034 C->set_has_split_ifs(true); // Has chance for split-if optimization
4035 if (!stopped()) {
4036 set_result(newcopy);
4037 }
4038 return true;
4039 }
4040
4041
4042 //----------------------generate_virtual_guard---------------------------
4043 // Helper for hashCode and clone. Peeks inside the vtable to avoid a call.
4044 Node* LibraryCallKit::generate_virtual_guard(Node* obj_klass,
4045 RegionNode* slow_region) {
4046 ciMethod* method = callee();
4047 int vtable_index = method->vtable_index();
4048 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index,
4049 "bad index %d", vtable_index);
4050 // Get the Method* out of the appropriate vtable entry.
4051 int entry_offset = in_bytes(InstanceKlass::vtable_start_offset()) +
4052 vtable_index*vtableEntry::size_in_bytes() +
4053 vtableEntry::method_offset_in_bytes();
4054 Node* entry_addr = basic_plus_adr(obj_klass, entry_offset);
4055 Node* target_call = make_load(NULL, entry_addr, TypePtr::NOTNULL, T_ADDRESS, MemNode::unordered);
4056
4057 // Compare the target method with the expected method (e.g., Object.hashCode).
4058 const TypePtr* native_call_addr = TypeMetadataPtr::make(method);
4059
4060 Node* native_call = makecon(native_call_addr);
4061 Node* chk_native = _gvn.transform(new CmpPNode(target_call, native_call));
4062 Node* test_native = _gvn.transform(new BoolNode(chk_native, BoolTest::ne));
4063
4064 return generate_slow_guard(test_native, slow_region);
4065 }
4066
4067 //-----------------------generate_method_call----------------------------
4068 // Use generate_method_call to make a slow-call to the real
4069 // method if the fast path fails. An alternative would be to
4070 // use a stub like OptoRuntime::slow_arraycopy_Java.
4071 // This only works for expanding the current library call,
4072 // not another intrinsic. (E.g., don't use this for making an
|