compiler/optimizing/nodes_x86.h

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ART_COMPILER_OPTIMIZING_NODES_X86_H_
#define ART_COMPILER_OPTIMIZING_NODES_X86_H_

namespace art {

// Compute the address of the method for X86 Constant area support.
class HX86ComputeBaseMethodAddress : public HExpression<0> {
 public:
  // Treat the value as an int32_t, but it is really a 32 bit native pointer.
  HX86ComputeBaseMethodAddress() : HExpression(Primitive::kPrimInt, SideEffects::None()) {}

  DECLARE_INSTRUCTION(X86ComputeBaseMethodAddress);

 private:
  DISALLOW_COPY_AND_ASSIGN(HX86ComputeBaseMethodAddress);
};

// Load a constant value from the constant table.
class HX86LoadFromConstantTable : public HExpression<2> {
 public:
  HX86LoadFromConstantTable(HX86ComputeBaseMethodAddress* method_base,
                            HConstant* constant,
                            bool needs_materialization = true)
      : HExpression(constant->GetType(), SideEffects::None()),
        needs_materialization_(needs_materialization) {
    SetRawInputAt(0, method_base);
    SetRawInputAt(1, constant);
  }

  bool NeedsMaterialization() const { return needs_materialization_; }

  HX86ComputeBaseMethodAddress* GetBaseMethodAddress() const {
    return InputAt(0)->AsX86ComputeBaseMethodAddress();
  }

  HConstant* GetConstant() const {
    return InputAt(1)->AsConstant();
  }

  DECLARE_INSTRUCTION(X86LoadFromConstantTable);

 private:
  const bool needs_materialization_;

  DISALLOW_COPY_AND_ASSIGN(HX86LoadFromConstantTable);
};

}  // namespace art

#endif  // ART_COMPILER_OPTIMIZING_NODES_X86_H_