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SubtractAnalyser.cpp
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SubtractAnalyser.cpp
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/*******************************************************************************
* Copyright (c) 2000, 2016 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
*******************************************************************************/
#include "codegen/SubtractAnalyser.hpp"
#include "arm/codegen/ARMInstruction.hpp"
#include "codegen/CodeGenerator.hpp"
#include "codegen/Register.hpp"
#include "codegen/RegisterPair.hpp"
#include "il/Node.hpp"
#include "il/Node_inlines.hpp"
void TR_ARMSubtractAnalyser::integerSubtractAnalyser(TR::Node *root,
TR::InstOpCode::Mnemonic regToRegOpCode,
TR::InstOpCode::Mnemonic memToRegOpCode)
{
TR::Node *firstChild;
TR::Node *secondChild;
firstChild = root->getFirstChild();
secondChild = root->getSecondChild();
TR::Register *firstRegister = firstChild->getRegister();
TR::Register *secondRegister = secondChild->getRegister();
setInputs(firstChild, firstRegister, secondChild, secondRegister);
if (getEvalChild1())
{
firstRegister = cg()->evaluate(firstChild);
}
if (getEvalChild2())
{
secondRegister = cg()->evaluate(secondChild);
}
if (getCopyReg1())
{
TR::Register *thirdReg = root->setRegister(cg()->allocateRegister());
if (getSubReg3Reg2())
{
new (cg()->trHeapMemory()) TR::ARMTrg1Src2Instruction(ARMOp_sub, root, thirdReg, secondRegister, firstRegister, cg());
}
else // assert getSubReg3Mem2() == true
{
// TR_ARMMemoryReference *tempMR = new (cg()->trHeapMemory()) TR_ARMMemoryReference(secondChild);
// new (cg()->trHeapMemory()) TR::ARMRegMemInstruction(memToRegOpCode, thirdReg, tempMR, cg());
// tempMR->decNodeReferenceCounts();
}
root->setRegister(thirdReg);
}
else if (getSubReg1Reg2())
{
new (cg()->trHeapMemory()) TR::ARMTrg1Src1Instruction(ARMOp_sub, root, firstRegister, secondRegister, cg());
root->setRegister(firstRegister);
}
else // assert getSubReg1Mem2() == true
{
// TR_ARMMemoryReference *tempMR = new (cg()->trHeapMemory()) TR_ARMMemoryReference(secondChild);
// new (cg()->trHeapMemory()) TR::ARMRegMemInstruction(memToRegOpCode, firstRegister, tempMR, cg());
// tempMR->decNodeReferenceCounts();
// root->setRegister(firstRegister);
}
firstChild->decReferenceCount();
secondChild->decReferenceCount();
return;
}
void TR_ARMSubtractAnalyser::longSubtractAnalyser(TR::Node *root)
{
TR::Node *firstChild;
TR::Node *secondChild;
firstChild = root->getFirstChild();
secondChild = root->getSecondChild();
TR::Register *firstRegister = firstChild->getRegister();
TR::Register *secondRegister = secondChild->getRegister();
setInputs(firstChild, firstRegister, secondChild, secondRegister);
if (getEvalChild1())
{
firstRegister = cg()->evaluate(firstChild);
}
if (getEvalChild2())
{
secondRegister = cg()->evaluate(secondChild);
}
if (getCopyReg1())
{
TR::Register *lowThird = cg()->allocateRegister();
TR::Register *highThird = cg()->allocateRegister();
TR::RegisterPair *thirdReg = cg()->allocateRegisterPair(lowThird, highThird);
root->setRegister(thirdReg);
new (cg()->trHeapMemory()) TR::ARMTrg1Src1Instruction(ARMOp_mov, root, lowThird, firstRegister->getLowOrder(), cg());
new (cg()->trHeapMemory()) TR::ARMTrg1Src1Instruction(ARMOp_mov, root, highThird, firstRegister->getHighOrder(), cg());
if (getSubReg3Reg2())
{
new (cg()->trHeapMemory()) TR::ARMTrg1Src1Instruction(ARMOp_sub, root, lowThird, secondRegister->getLowOrder(), cg());
// new (cg()->trHeapMemory()) TR::ARMTrg1Src1Instruction(SBB4RegReg, root, highThird, secondRegister->getHighOrder(), cg());
}
else // assert getSubReg3Mem2() == true
{
// TR_ARMMemoryReference *lowMR = new (cg()->trHeapMemory()) TR_ARMMemoryReference(secondChild);
// new (cg()->trHeapMemory()) TR::ARMRegMemInstruction(SUB4RegMem, lowThird, lowMR, cg());
// TR_ARMMemoryReference *highMR = new (cg()->trHeapMemory()) TR_ARMMemoryReference(*lowMR, 4);
// new (cg()->trHeapMemory()) TR::ARMRegMemInstruction(SBB4RegMem, highThird, highMR, cg());
// lowMR->decNodeReferenceCounts();
}
root->setRegister(thirdReg);
}
else if (getSubReg1Reg2())
{
// new (cg()->trHeapMemory()) TR::ARMTrg1Src2Instruction(root, ARMOp_subf, firstRegister->getLowOrder(), secondRegister->getLowOrder(), cg());
// new (cg()->trHeapMemory()) TR::ARMRegRegInstruction(SBB4RegReg, firstRegister->getHighOrder(), secondRegister->getHighOrder(), cg());
root->setRegister(firstRegister);
}
else // assert getSubReg1Mem2() == true
{
// TR_ARMMemoryReference *lowMR = new (cg()->trHeapMemory()) TR_ARMMemoryReference(secondChild);
// new (cg()->trHeapMemory()) TR::ARMRegMemInstruction(SUB4RegMem, firstRegister->getLowOrder(), lowMR, cg());
// TR_ARMMemoryReference *highMR = new (cg()->trHeapMemory()) TR_ARMMemoryReference(*lowMR, 4);
// new (cg()->trHeapMemory()) TR::ARMRegMemInstruction(SBB4RegMem, firstRegister->getHighOrder(), highMR, cg());
// lowMR->decNodeReferenceCounts();
// root->setRegister(firstRegister);
}
firstChild->decReferenceCount();
secondChild->decReferenceCount();
return;
}
const uint8_t TR_ARMSubtractAnalyser::actionMap[NUM_ACTIONS] =
{ // Reg1 Mem1 Clob1 Reg2 Mem2 Clob2
EvalChild1 | // 0 0 0 0 0 0
EvalChild2 |
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 0 0 0 0 1
EvalChild2 |
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 0 0 0 1 0
EvalChild2 |
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 0 0 0 1 1
CopyReg1 |
SubReg3Mem2,
EvalChild1 | // 0 0 0 1 0 0
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 0 0 1 0 1
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 0 0 1 1 0
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 0 0 1 1 1
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 0 1 0 0 0
EvalChild2 |
SubReg1Reg2,
EvalChild1 | // 0 0 1 0 0 1
EvalChild2 |
SubReg1Reg2,
EvalChild1 | // 0 0 1 0 1 0
EvalChild2 |
SubReg1Reg2,
EvalChild1 | // 0 0 1 0 1 1
SubReg1Mem2,
EvalChild1 | // 0 0 1 1 0 0
SubReg1Reg2,
EvalChild1 | // 0 0 1 1 0 1
SubReg1Reg2,
EvalChild1 | // 0 0 1 1 1 0
SubReg1Reg2,
EvalChild1 | // 0 0 1 1 1 1
SubReg1Reg2,
EvalChild1 | // 0 1 0 0 0 0
EvalChild2 |
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 1 0 0 0 1
EvalChild2 |
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 1 0 0 1 0
EvalChild2 |
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 1 0 0 1 1
CopyReg1 |
SubReg3Mem2,
EvalChild1 | // 0 1 0 1 0 0
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 1 0 1 0 1
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 1 0 1 1 0
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 1 0 1 1 1
CopyReg1 |
SubReg3Reg2,
EvalChild1 | // 0 1 1 0 0 0
EvalChild2 |
SubReg1Reg2,
EvalChild1 | // 0 1 1 0 0 1
EvalChild2 |
SubReg1Reg2,
EvalChild1 | // 0 1 1 0 1 0
EvalChild2 |
SubReg1Reg2,
EvalChild1 | // 0 1 1 0 1 1
SubReg1Mem2,
EvalChild1 | // 0 1 1 1 0 0
SubReg1Reg2,
EvalChild1 | // 0 1 1 1 0 1
SubReg1Reg2,
EvalChild1 | // 0 1 1 1 1 0
SubReg1Reg2,
EvalChild1 | // 0 1 1 1 1 1
SubReg1Reg2,
EvalChild2 | // 1 0 0 0 0 0
CopyReg1 |
SubReg3Reg2,
EvalChild2 | // 1 0 0 0 0 1
CopyReg1 |
SubReg3Reg2,
EvalChild2 | // 1 0 0 0 1 0
CopyReg1 |
SubReg3Reg2,
CopyReg1 | // 1 0 0 0 1 1
SubReg3Mem2,
CopyReg1 | // 1 0 0 1 0 0
SubReg3Reg2,
CopyReg1 | // 1 0 0 1 0 1
SubReg3Reg2,
CopyReg1 | // 1 0 0 1 1 0
SubReg3Reg2,
CopyReg1 | // 1 0 0 1 1 1
SubReg3Reg2,
EvalChild2 | // 1 0 1 0 0 0
SubReg1Reg2,
EvalChild2 | // 1 0 1 0 0 1
SubReg1Reg2,
EvalChild2 | // 1 0 1 0 1 0
SubReg1Reg2,
SubReg1Mem2, // 1 0 1 0 1 1
SubReg1Reg2, // 1 0 1 1 0 0
SubReg1Reg2, // 1 0 1 1 0 1
SubReg1Reg2, // 1 0 1 1 1 0
SubReg1Reg2, // 1 0 1 1 1 1
EvalChild2 | // 1 1 0 0 0 0
CopyReg1 |
SubReg3Reg2,
EvalChild2 | // 1 1 0 0 0 1
CopyReg1 |
SubReg3Reg2,
EvalChild2 | // 1 1 0 0 1 0
CopyReg1 |
SubReg3Reg2,
CopyReg1 | // 1 1 0 0 1 1
SubReg3Mem2,
CopyReg1 | // 1 1 0 1 0 0
SubReg3Reg2,
CopyReg1 | // 1 1 0 1 0 1
SubReg3Reg2,
CopyReg1 | // 1 1 0 1 1 0
SubReg3Reg2,
CopyReg1 | // 1 1 0 1 1 1
SubReg3Reg2,
EvalChild2 | // 1 1 1 0 0 0
SubReg1Reg2,
EvalChild2 | // 1 1 1 0 0 1
SubReg1Reg2,
EvalChild2 | // 1 1 1 0 1 0
SubReg1Reg2,
SubReg1Mem2, // 1 1 1 0 1 1
SubReg1Reg2, // 1 1 1 1 0 0
SubReg1Reg2, // 1 1 1 1 0 1
SubReg1Reg2, // 1 1 1 1 1 0
SubReg1Reg2 // 1 1 1 1 1 1
};