394 // TypePtr::PTR type_ptr = _type->is_ptr()->_ptr;
395 // // If there isn't any NotNull'ness to preserve
396 // // OR if join preserved NotNull'ness then return it
397 // if( type_ptr == TypePtr::BotPTR || type_ptr == TypePtr::Null ||
398 // join_ptr == TypePtr::NotNull || join_ptr == TypePtr::Constant ) {
399 // return join;
400 // }
401 // // ELSE return same old type as before
402 // return _type;
403 // }
404 // // Not joining two pointers
405 // return join;
406 }
407
408 Node* CheckCastPPNode::Ideal(PhaseGVN *phase, bool can_reshape) {
409 // This is a value type. Its input is the return of a call: the call
410 // returns a value type and we now know its exact type: build a
411 // ValueTypePtrNode from the call.
412 if (can_reshape &&
413 in(0) == NULL &&
414 phase->C->can_add_value_type_ptr() &&
415 type()->isa_valuetypeptr() &&
416 in(1) != NULL && in(1)->is_Proj() &&
417 in(1)->in(0) != NULL && in(1)->in(0)->is_CallStaticJava() &&
418 in(1)->in(0)->as_CallStaticJava()->method() != NULL &&
419 in(1)->as_Proj()->_con == TypeFunc::Parms) {
420 const TypeValueTypePtr* cast_type = type()->is_valuetypeptr();
421 ciValueKlass* vk = cast_type->value_type()->value_klass();
422 assert(!vk->is__Value(), "why cast to __Value?");
423 PhaseIterGVN* igvn = phase->is_IterGVN();
424
425 if (ValueTypeReturnedAsFields && vk->can_be_returned_as_fields()) {
426 igvn->set_delay_transform(true);
427 CallNode* call = in(1)->in(0)->as_Call();
428 igvn->C->remove_macro_node(call);
429 // We now know the return type of the call
430 const TypeTuple* range_sig = TypeTuple::make_range(vk, false);
431 const TypeTuple* range_cc = TypeTuple::make_range(vk, true);
432 assert(range_sig != call->_tf->range_sig() && range_cc != call->_tf->range_cc(), "type should change");
433 call->_tf = TypeFunc::make(call->_tf->domain_sig(), call->_tf->domain_cc(),
434 range_sig, range_cc);
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394 // TypePtr::PTR type_ptr = _type->is_ptr()->_ptr;
395 // // If there isn't any NotNull'ness to preserve
396 // // OR if join preserved NotNull'ness then return it
397 // if( type_ptr == TypePtr::BotPTR || type_ptr == TypePtr::Null ||
398 // join_ptr == TypePtr::NotNull || join_ptr == TypePtr::Constant ) {
399 // return join;
400 // }
401 // // ELSE return same old type as before
402 // return _type;
403 // }
404 // // Not joining two pointers
405 // return join;
406 }
407
408 Node* CheckCastPPNode::Ideal(PhaseGVN *phase, bool can_reshape) {
409 // This is a value type. Its input is the return of a call: the call
410 // returns a value type and we now know its exact type: build a
411 // ValueTypePtrNode from the call.
412 if (can_reshape &&
413 in(0) == NULL &&
414 phase->C->can_add_value_type() &&
415 type()->isa_valuetypeptr() &&
416 in(1) != NULL && in(1)->is_Proj() &&
417 in(1)->in(0) != NULL && in(1)->in(0)->is_CallStaticJava() &&
418 in(1)->in(0)->as_CallStaticJava()->method() != NULL &&
419 in(1)->as_Proj()->_con == TypeFunc::Parms) {
420 const TypeValueTypePtr* cast_type = type()->is_valuetypeptr();
421 ciValueKlass* vk = cast_type->value_type()->value_klass();
422 assert(!vk->is__Value(), "why cast to __Value?");
423 PhaseIterGVN* igvn = phase->is_IterGVN();
424
425 if (ValueTypeReturnedAsFields && vk->can_be_returned_as_fields()) {
426 igvn->set_delay_transform(true);
427 CallNode* call = in(1)->in(0)->as_Call();
428 igvn->C->remove_macro_node(call);
429 // We now know the return type of the call
430 const TypeTuple* range_sig = TypeTuple::make_range(vk, false);
431 const TypeTuple* range_cc = TypeTuple::make_range(vk, true);
432 assert(range_sig != call->_tf->range_sig() && range_cc != call->_tf->range_cc(), "type should change");
433 call->_tf = TypeFunc::make(call->_tf->domain_sig(), call->_tf->domain_cc(),
434 range_sig, range_cc);
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