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OMRRegisterDependencyStruct.hpp
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OMRRegisterDependencyStruct.hpp
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/*******************************************************************************
* Copyright (c) 2000, 2020 IBM Corp. and others
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at http://eclipse.org/legal/epl-2.0
* or the Apache License, Version 2.0 which accompanies this distribution
* and is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License, v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception [1] and GNU General Public
* License, version 2 with the OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] http://openjdk.java.net/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
*******************************************************************************/
#ifndef OMR_REGISTER_DEPENDENCY_STRUCT_INCL
#define OMR_REGISTER_DEPENDENCY_STRUCT_INCL
/*
* The following #define and typedef must appear before any #includes in this file
*/
#ifndef OMR_REGISTER_DEPENDENCY_STRUCT_CONNECTOR
#define OMR_REGISTER_DEPENDENCY_STRUCT_CONNECTOR
namespace OMR { struct RegisterDependency; }
namespace OMR { typedef OMR::RegisterDependency RegisterDependencyConnector; }
#endif
#include <stdint.h>
#include "codegen/Register.hpp"
#include "codegen/RealRegister.hpp"
#define DefinesDependentRegister 0x01
#define ReferencesDependentRegister 0x02
#define UsesDependentRegister (ReferencesDependentRegister | DefinesDependentRegister)
namespace OMR
{
struct RegisterDependency
{
uint8_t _flags;
TR::Register *_virtualRegister;
TR::RealRegister::RegNum _realRegister;
uint32_t getFlags() {return _flags;}
uint32_t assignFlags(uint8_t f) {return _flags = f;}
uint32_t setFlags(uint8_t f) {return _flags |= f;}
uint32_t resetFlags(uint8_t f) {return _flags &= ~f;}
uint32_t getDefsRegister() {return _flags & DefinesDependentRegister;}
uint32_t setDefsRegister() {return _flags |= DefinesDependentRegister;}
uint32_t resetDefsRegister() {return _flags &= ~DefinesDependentRegister;}
uint32_t getRefsRegister() {return _flags & ReferencesDependentRegister;}
uint32_t setRefsRegister() {return _flags |= ReferencesDependentRegister;}
uint32_t resetRefsRegister() {return _flags &= ~ReferencesDependentRegister;}
uint32_t getUsesRegister() {return _flags & UsesDependentRegister;}
TR::Register *getRegister() {return _virtualRegister;}
TR::Register *setRegister(TR::Register *r) {return (_virtualRegister = r);}
/**
* @return RealRegister enum for this register dependency
*/
TR::RealRegister::RegNum getRealRegister() {return _realRegister;}
/**
* @brief Set RealRegister enum value for this register dependency
*
* @param[in] r : RealRegister enum value
*/
TR::RealRegister::RegNum setRealRegister(TR::RealRegister::RegNum r) { return (_realRegister = r); }
#ifndef TR_TARGET_S390
/**
* Z already has a \c isSpilledReg() function that is implemented differently.
* Avoid compiling the common version for now on Z. Eventually, there should
* be a unified solution across all platforms.
*/
/**
* @return Answers \c true if this register dependency records a register in
* spill state; \c false otherwise.
*/
bool isSpilledReg() { return _realRegister == TR::RealRegister::SpilledReg; }
#endif
/**
* @return Answers \c true if this register dependency does not specify an
* actual real register. Some architectures may use this to request
* that any available register be assigned. Answers \c false otherwise.
*/
bool isNoReg() { return _realRegister == TR::RealRegister::NoReg; }
};
}
#endif