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 /*

  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.

  * Copyright 2008, 2009 Red Hat, Inc.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  *

  */

 #include "precompiled.hpp"

 #include "ci/ciType.hpp"

 #include "shark/llvmHeaders.hpp"

 #include "shark/llvmValue.hpp"

 #include "shark/sharkBuilder.hpp"

 #include "shark/sharkValue.hpp"

 using namespace llvm;

 // Cloning

 SharkValue* SharkNormalValue::clone() const {

   return SharkValue::create_generic(type(), generic_value(), zero_checked());

 }

 SharkValue* SharkPHIValue::clone() const {

   return SharkValue::create_phi(type(), (PHINode *) generic_value(), this);

 }

 SharkValue* SharkAddressValue::clone() const {

   return SharkValue::address_constant(address_value());

 }

 // Casting

 bool SharkValue::is_phi() const {

   return false;

 }

 bool SharkPHIValue::is_phi() const {

   return true;

 }

 SharkPHIValue* SharkValue::as_phi() {

   ShouldNotCallThis();

 }

 SharkPHIValue* SharkPHIValue::as_phi() {

   return this;

 }

 // Comparison

 bool SharkNormalValue::equal_to(SharkValue *other) const {

   return (this->type()          == other->type() &&

           this->generic_value() == other->generic_value() &&

           this->zero_checked()  == other->zero_checked());

 }

 bool SharkAddressValue::equal_to(SharkValue *other) const {

   return (this->address_value() == other->address_value());

 }

 // Type access

 ciType* SharkValue::type() const {

   ShouldNotCallThis();

 }

 ciType* SharkNormalValue::type() const {

   return _type;

 }

 BasicType SharkNormalValue::basic_type() const {

   return type()->basic_type();

 }

 BasicType SharkAddressValue::basic_type() const {

   return T_ADDRESS;

 }

 int SharkNormalValue::size() const {

   return type()->size();

 }

 int SharkAddressValue::size() const {

   return 1;

 }

 bool SharkValue::is_jint() const {

   return false;

 }

 bool SharkValue::is_jlong() const {

   return false;

 }

 bool SharkValue::is_jfloat() const {

   return false;

 }

 bool SharkValue::is_jdouble() const {

   return false;

 }

 bool SharkValue::is_jobject() const {

   return false;

 }

 bool SharkValue::is_jarray() const {

   return false;

 }

 bool SharkValue::is_address() const {

   return false;

 }

 bool SharkNormalValue::is_jint() const {

   return llvm_value()->getType() == SharkType::jint_type();

 }

 bool SharkNormalValue::is_jlong() const {

   return llvm_value()->getType() == SharkType::jlong_type();

 }

 bool SharkNormalValue::is_jfloat() const {

   return llvm_value()->getType() == SharkType::jfloat_type();

 }

 bool SharkNormalValue::is_jdouble() const {

   return llvm_value()->getType() == SharkType::jdouble_type();

 }

 bool SharkNormalValue::is_jobject() const {

   return llvm_value()->getType() == SharkType::oop_type();

 }

 bool SharkNormalValue::is_jarray() const {

   return basic_type() == T_ARRAY;

 }

 bool SharkAddressValue::is_address() const {

   return true;

 }

 // Typed conversions from SharkValues

 Value* SharkValue::jint_value() const {

   ShouldNotCallThis();

 }

 Value* SharkValue::jlong_value() const {

   ShouldNotCallThis();

 }

 Value* SharkValue::jfloat_value() const {

   ShouldNotCallThis();

 }

 Value* SharkValue::jdouble_value() const {

   ShouldNotCallThis();

 }

 Value* SharkValue::jobject_value() const {

   ShouldNotCallThis();

 }

 Value* SharkValue::jarray_value() const {

   ShouldNotCallThis();

 }

 int SharkValue::address_value() const {

   ShouldNotCallThis();

 }

 Value* SharkNormalValue::jint_value() const {

   assert(is_jint(), "should be");

   return llvm_value();

 }

 Value* SharkNormalValue::jlong_value() const {

   assert(is_jlong(), "should be");

   return llvm_value();

 }

 Value* SharkNormalValue::jfloat_value() const {

   assert(is_jfloat(), "should be");

   return llvm_value();

 }

 Value* SharkNormalValue::jdouble_value() const {

   assert(is_jdouble(), "should be");

   return llvm_value();

 }

 Value* SharkNormalValue::jobject_value() const {

   assert(is_jobject(), "should be");

   return llvm_value();

 }

 Value* SharkNormalValue::jarray_value() const {

   // XXX assert(is_jarray(), "should be");

   // XXX http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=324

   assert(is_jobject(), "should be");

   return llvm_value();

 }

 int SharkAddressValue::address_value() const {

   return _bci;

 }

 // Type-losing conversions -- use with care!

 Value* SharkNormalValue::generic_value() const {

   return llvm_value();

 }

 Value* SharkAddressValue::generic_value() const {

   return LLVMValue::intptr_constant(address_value());

 }

 Value* SharkValue::intptr_value(SharkBuilder* builder) const {

   ShouldNotCallThis();

 }

 Value* SharkNormalValue::intptr_value(SharkBuilder* builder) const {

   return builder->CreatePtrToInt(jobject_value(), SharkType::intptr_type());

 }

 // Phi-style stuff for SharkPHIState::add_incoming

 void SharkValue::addIncoming(SharkValue *value, BasicBlock* block) {

   ShouldNotCallThis();

 }

 void SharkPHIValue::addIncoming(SharkValue *value, BasicBlock* block) {

   assert(!is_clone(), "shouldn't be");

   ((llvm::PHINode *) generic_value())->addIncoming(

       value->generic_value(), block);

   if (!value->zero_checked())

     _all_incomers_zero_checked = false;

 }

 void SharkAddressValue::addIncoming(SharkValue *value, BasicBlock* block) {

   assert(this->equal_to(value), "should be");

 }

 // Phi-style stuff for SharkState::merge

 SharkValue* SharkNormalValue::merge(SharkBuilder* builder,

                                     SharkValue*   other,

                                     BasicBlock*   other_block,

                                     BasicBlock*   this_block,

                                     const char*   name) {

   assert(type() == other->type(), "should be");

   assert(zero_checked() == other->zero_checked(), "should be");

   PHINode *phi = builder->CreatePHI(SharkType::to_stackType(type()), 0, name);

   phi->addIncoming(this->generic_value(), this_block);

   phi->addIncoming(other->generic_value(), other_block);

   return SharkValue::create_generic(type(), phi, zero_checked());

 }

 SharkValue* SharkAddressValue::merge(SharkBuilder* builder,

                                      SharkValue*   other,

                                      BasicBlock*   other_block,

                                      BasicBlock*   this_block,

                                      const char*   name) {

   assert(this->equal_to(other), "should be");

   return this;

 }

 // Repeated null and divide-by-zero check removal

 bool SharkValue::zero_checked() const {

   ShouldNotCallThis();

 }

 void SharkValue::set_zero_checked(bool zero_checked) {

   ShouldNotCallThis();

 }

 bool SharkNormalValue::zero_checked() const {

   return _zero_checked;

 }

 void SharkNormalValue::set_zero_checked(bool zero_checked) {

   _zero_checked = zero_checked;

 }