scale.backend.x86
Class X86RRRInstruction

java.lang.Object
  scale.backend.Instruction
      scale.backend.x86.X86Instruction
          scale.backend.x86.X86RInstruction
              scale.backend.x86.X86RRInstruction
                  scale.backend.x86.X86RRRInstruction

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

X86RRRDInstruction

public class X86RRRInstruction
extends X86RRInstruction

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

$Id$

Copyright 2008 by James H. Burrill
All Rights Reserved.

Field Summary

protected int

reg3

Fields inherited from class scale.backend.x86.X86RRInstruction

reg2

Fields inherited from class scale.backend.x86.X86RInstruction

reg

Fields inherited from class scale.backend.x86.X86Instruction

opcode, setCC, useCC

Constructor Summary

X86RRRInstruction(int opcode, int reg, int reg2, int reg3)

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	getReg3()
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	setReg3(int reg3)
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.X86RRInstruction

getReg2, setReg2

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, getScale, independent, independentCC, instructionSize, isReversed, setDisplacement, setDisplacement2, setOpcode, setOperandSize, 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

reg3

protected int reg3

Constructor Detail

X86RRRInstruction

public X86RRRInstruction(int opcode,
                         int reg,
                         int reg2,
                         int reg3)

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 X86RRInstruction

getReg3

public int getReg3()

Overrides:

getReg3 in class X86Instruction

setReg3

public void setReg3(int reg3)

Overrides:

setReg3 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 X86RRInstruction

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 X86RRInstruction

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 X86RRInstruction

assembler

public void assembler(Assembler asm,
                      Emit emit)

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

Overrides:

assembler in class X86RRInstruction

toString

public java.lang.String toString()

Overrides:

toString in class X86RRInstruction