/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.vm.compiler.ir.quad;
import org.jnode.vm.compiler.ir.CodeGenerator;
import org.jnode.vm.compiler.ir.Constant;
import org.jnode.vm.compiler.ir.IRBasicBlock;
import org.jnode.vm.compiler.ir.Operand;
import org.jnode.vm.compiler.ir.Variable;
/**
* @author Madhu Siddalingaiah
*/
public class ConstantRefAssignQuad<T> extends AssignQuad<T> {
private Constant<T> rhs;
/**
* @param address
* @param block
* @param lhsIndex
*/
public ConstantRefAssignQuad(int address, IRBasicBlock<T> block, int lhsIndex,
Constant<T> rhs) {
super(address, block, lhsIndex);
this.rhs = rhs;
getLHS().setType(rhs.getType());
}
/**
* @param address
* @param block
* @param lhs
*/
public ConstantRefAssignQuad(int address, IRBasicBlock<T> block, Variable<T> lhs,
Constant<T> rhs) {
super(address, block, lhs);
this.rhs = rhs;
getLHS().setType(rhs.getType());
}
/**
* @param address
* @param block
* @param lhs
*/
public ConstantRefAssignQuad(int address, int bytecodeAddress, IRBasicBlock<T> block, Variable<T> lhs,
Constant<T> rhs) {
super(address, bytecodeAddress, block, lhs);
this.rhs = rhs;
getLHS().setType(rhs.getType());
}
/**
* @see org.jnode.vm.compiler.ir.quad.Quad#getReferencedOps()
*/
public Operand<T>[] getReferencedOps() {
return null;
}
public String toString() {
return getAddress() + ": " + getLHS().toString() + " = "
+ rhs.toString();
}
/**
* @return the RHS of the assignment
*/
public Constant<T> getRHS() {
return rhs;
}
public Operand<T> propagate(Variable<T> operand) {
setDeadCode(true);
return rhs;
}
public void doPass2() {
}
public void generateCode(CodeGenerator<T> cg) {
cg.generateCodeFor(this);
}
public int getLHSLiveAddress() {
return this.getAddress() + 1;
}
}