scale.backend.x86
Class X86RRInstruction

java.lang.Object
  scale.backend.Instruction
      scale.backend.x86.X86Instruction
          scale.backend.x86.X86RInstruction
              scale.backend.x86.X86RRInstruction

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

X86RRDInstruction, X86RRRInstruction

public class X86RRInstruction
extends X86RInstruction

This is the base class for all X86 instructions except branches that reference two registers.

$Id$

Copyright 2008 by James H. Burrill
All Rights Reserved.

Field Summary

protected int

reg2

Fields inherited from class scale.backend.x86.X86RInstruction

reg

Fields inherited from class scale.backend.x86.X86Instruction

opcode, setCC, useCC

Constructor Summary

X86RRInstruction(int opcode, int reg, int reg2)

Method Summary

void	assembler(Assembler asm, Emit emit) Insert the assembler representation of the instruction into the output stream.
protected boolean	checkForm(int opcode) Return true if the specified form is valid for this instruction opcode.
int	getReg2()
void	remapRegisters(int[] map) Map the virtual registers referenced in the instruction to the specified real registers.
void	remapSrcRegister(int oldReg, int newReg) Map the registers used in the instruction as sources to the specified register.
void	setReg2(int reg2)
java.lang.String	toString()
boolean	uses(int register, RegisterSet registers) Return true if the instruction uses the register.

Methods inherited from class scale.backend.x86.X86RInstruction

defs, getDestRegister, getReg, remapDestRegister, setReg, specifyRegisterUsage

Methods inherited from class scale.backend.x86.X86Instruction

assembleDisp, buildAddress, canBeDeleted, getDisplacement, getDisplacement2, getOpcode, getOperandSize, getOperandSizeLabel, getReg3, getScale, independent, independentCC, instructionSize, isReversed, setDisplacement, setDisplacement2, setOpcode, setOperandSize, setReg3, setScale, setsCC, setSetCC, setsSpecialReg, setUseCC, usesCC

Methods inherited from class scale.backend.Instruction

clone, copy, ehash, getBBID, getCopyDest, getCopySrc, getExecutionCycles, getFunctionalUnit, getLoopNumber, getNext, getPredicate, getPredicates, getSrcRegisters, getTag, isBranch, isCopy, isLabel, isLoad, isMandatory, isMarker, isPhi, isPredicated, isPredicatedOnTrue, isPrefetch, isSpillInstruction, isSpillLoadPoint, isSpillStorePoint, isStore, markSpillInstruction, mods, nullified, nullify, numPredicates, removePredicates, setBBID, setLoopNumber, setMandatory, setNext, setPredicate, setPredicate, setPredicatedOnTrue, setPredicates, setTag, specifyNotSpillLoadPoint, specifySpillStorePoint

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

reg2

protected int reg2

Constructor Detail

X86RRInstruction

public X86RRInstruction(int opcode,
                        int reg,
                        int reg2)

Method Detail

checkForm

protected boolean checkForm(int opcode)

Description copied from class: X86Instruction

Return true if the specified form is valid for this instruction opcode.

Overrides:

checkForm in class X86RInstruction

getReg2

public int getReg2()

Overrides:

getReg2 in class X86Instruction

setReg2

public void setReg2(int reg2)

Overrides:

setReg2 in class X86Instruction

remapRegisters

public void remapRegisters(int[] map)

Description copied from class: Instruction

Map the virtual registers referenced in the instruction to the specified real registers. The mapping is specified using an array that is indexed by the virtual register to return the real register.

Overrides:

remapRegisters in class X86RInstruction

Parameters:

map - maps from the virtual register to real register

remapSrcRegister

public void remapSrcRegister(int oldReg,
                             int newReg)

Map the registers used in the instruction as sources to the specified register. If the register is not used as a source register, no change is made.

Overrides:

remapSrcRegister in class X86RInstruction

Parameters:

oldReg - is the previous source register

newReg - is the new source register

uses

public boolean uses(int register,
                    RegisterSet registers)

Return true if the instruction uses the register.

Overrides:

uses in class X86RInstruction

assembler

public void assembler(Assembler asm,
                      Emit emit)

Insert the assembler representation of the instruction into the output stream.

Overrides:

assembler in class X86RInstruction

toString

public java.lang.String toString()

Overrides:

toString in class X86RInstruction