org.multijava.util.backend
Class QQuadruple

java.lang.Object
  org.multijava.util.backend.QNode
      org.multijava.util.backend.QQuadruple

All Implemented Interfaces:

QOrigin

class QQuadruple

extends QNode

implements QOrigin

This class represents a quadruple: a source and a destination

Field Summary
private  QDestination	dest
private  QOrigin	origin

 

Constructor Summary

QQuadruple(QDestination dest, QOrigin origin)

 

Method Summary
static QTemporary[]	buildQuadruples(MethodEnv env, BasicBlock block, InstructionHandle[] insns, QTemporary[] entryStack, ArrayList vect)           Builds the quadruple list
QOrigin	duplicate()           Duplicate this node
void	generate(CodeSequence seq)           Generates instructions for this quadruple
QTemporary	getDef()           Returns the defined temporary.
InstructionHandle	getInstruction()           Returns the primitive instruction
QJump	getJump()           Returns this node a a jump
QTemporary[]	getLivein()           Returns the livein temporary.
QTemporary[]	getLiveout()           Returns the liveout temporary.
QOrigin[]	getOrigins()           returns the parameters of this instruction
QQuadruple	getStore()           Returns this node a a jump
QSwitch	getSwitch()           Returns this node a a jump
int	getType()           The type of this instruction
QTemporary[]	getUses()           Returns the used temporaries.
boolean	hasSideEffect()           Returns this node a a jump
boolean	isJump()           isJump
boolean	isLive(QTemporary temp)           Is a temporary live at a certin point
boolean	isStore()           isStore
boolean	isSwitch()           isJump
private static QOperand[]	readOperands(Stack stack, int size)
void	setLivein(QTemporary[] livein)           Sets the livein temporary.
void	setLiveout(QTemporary[] liveout)           Sets the liveout temporary.
void	setOrigin(QOrigin origin, int i)           Sets the parameters of this instruction
String	toString()           Human readable form
void	useStack()           Uses the stack instead of a local var

 

Methods inherited from class java.lang.Object

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

 

Field Detail

dest

private QDestination dest

origin

private QOrigin origin

QQuadruple

public QQuadruple(QDestination dest,
                  QOrigin origin)

isStore

public boolean isStore()

isStore

Overrides:

isStore in class QNode

getStore

public QQuadruple getStore()

Returns this node a a jump

Overrides:

getStore in class QNode

toString

public String toString()

Human readable form

Overrides:

toString in class Object

getType

public int getType()

The type of this instruction

Specified by:

getType in interface QOrigin

duplicate

public QOrigin duplicate()

Duplicate this node

Specified by:

duplicate in interface QOrigin

useStack

public void useStack()

Uses the stack instead of a local var

getOrigins

public QOrigin[] getOrigins()

returns the parameters of this instruction

Specified by:

getOrigins in interface QOrigin

setOrigin

public void setOrigin(QOrigin origin,
                      int i)

Sets the parameters of this instruction

Specified by:

setOrigin in interface QOrigin

getDef

public QTemporary getDef()

Returns the defined temporary.

getUses

public QTemporary[] getUses()

Returns the used temporaries.

Specified by:

getUses in interface QOrigin

generate

public void generate(CodeSequence seq)

Generates instructions for this quadruple

Specified by:

generate in interface QOrigin

Parameters:

seq - The code sequence of instruction

buildQuadruples

public static QTemporary[] buildQuadruples(MethodEnv env,
                                           BasicBlock block,
                                           InstructionHandle[] insns,
                                           QTemporary[] entryStack,
                                           ArrayList vect)

Builds the quadruple list

Parameters:

insns - the list of instructionx

entryStack - the stack in entry

vect - a place holder for quadruples

Returns:

the stack at the end of this basic block

readOperands

private static QOperand[] readOperands(Stack stack,
                                       int size)

getInstruction

public InstructionHandle getInstruction()

Returns the primitive instruction

isJump

public boolean isJump()

isJump

getJump

public QJump getJump()

Returns this node a a jump

isSwitch

public boolean isSwitch()

isJump

getSwitch

public QSwitch getSwitch()

Returns this node a a jump

hasSideEffect

public boolean hasSideEffect()

Returns this node a a jump

getLivein

public QTemporary[] getLivein()

Returns the livein temporary.

setLivein

public void setLivein(QTemporary[] livein)

Sets the livein temporary.

getLiveout

public QTemporary[] getLiveout()

Returns the liveout temporary.

setLiveout

public void setLiveout(QTemporary[] liveout)

Sets the liveout temporary.

isLive

public boolean isLive(QTemporary temp)

Is a temporary live at a certin point