coins.backend.lir
Class LirNode

java.lang.Object
  coins.backend.lir.LirNode

Direct Known Subclasses:

LirBinOp, LirFconst, LirIconst, LirLabelRef, LirNaryOp, LirString, LirSymRef, LirUnaOp

public abstract class LirNode

extends java.lang.Object

New LIR node's basic structure

Nested Class Summary

static class

LirNode.Scanner Scanner for LIR expression tree.

Field Summary

int	id Key to bind related information
int	opCode Instruction Code
ImList	opt Optional arguments list (op opr1 opr2 &hogehoge ...)
int	type Type of this node's result

Constructor Summary

(package private)

LirNode(int id, int opCode, int type, ImList opt) Create LIR node

Method Summary

abstract void	accept(LirVisitor v) Accept visitor v
boolean	equals(java.lang.Object x) Return true if this object equals to x
Label[]	getTargets() Return jump target labels.
int	hashCode() Return hash value of LirNode.
boolean	isBranch() Return true if node is a branch instruction.
boolean	isPhysicalRegister() Return true if node is a physical register.
boolean	isRegisterOperand() Is register operand?
LirNode	kid(int n) Return nth operand; Subclass responsibility
abstract LirNode	makeCopy(LirFactory fac) Return a deep copy of this node
LirNode	makeShallowCopy(LirFactory fac) Return a shallow copy of this node.
int	nKids() Return number of operands
int	nSrcs() Deprecated. use nKids instead.
void	pickUpDefs(PickUpVariable receiver) Pick up definitions of register variables in this L-expression.
void	pickUpUses(PickUpVariable receiver) Pick up uses of register variables in this L-expression.
void	replaceLabel(Label x, Label y, LirFactory fac) Replace target label y for x.
abstract LirNode	replaceOptions(LirFactory fac, ImList newOpt) Return a copy of this node without options.
void	setKid(int n, LirNode kid) Set nth operand; Subclass responsibility
void	setSrc(int n, LirNode src) Deprecated. use setKid instead.
LirNode	src(int n) Deprecated. use kid instead.
java.lang.Object	toSexp() Convert to external LIR format.
java.lang.String	toString() Visualize
java.lang.String	toStringExp() Deprecated.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

id

public final int id

Key to bind related information

opCode

public final int opCode

Instruction Code

type

public final int type

Type of this node's result

opt

public final ImList opt

Optional arguments list (op opr1 opr2 &hogehoge ...)

Constructor Detail

LirNode

LirNode(int id,
        int opCode,
        int type,
        ImList opt)

Create LIR node

Method Detail

makeCopy

public abstract LirNode makeCopy(LirFactory fac)

Return a deep copy of this node

makeShallowCopy

public LirNode makeShallowCopy(LirFactory fac)

Return a shallow copy of this node. Default action is same as makeCopy.

replaceOptions

public abstract LirNode replaceOptions(LirFactory fac,
                                       ImList newOpt)

Return a copy of this node without options.

nSrcs

public int nSrcs()

Deprecated. use nKids instead.

Return number of operands

nKids

public int nKids()

Return number of operands

src

public LirNode src(int n)

Deprecated. use kid instead.

Return nth operand

kid

public LirNode kid(int n)

Return nth operand; Subclass responsibility

setSrc

public void setSrc(int n,
                   LirNode src)

Deprecated. use setKid instead.

Set nth operand

setKid

public void setKid(int n,
                   LirNode kid)

Set nth operand; Subclass responsibility

getTargets

public Label[] getTargets()

Return jump target labels. Targets are packed in an array of Label.

replaceLabel

public void replaceLabel(Label x,
                         Label y,
                         LirFactory fac)

Replace target label y for x.

isBranch

public boolean isBranch()

Return true if node is a branch instruction.

isPhysicalRegister

public boolean isPhysicalRegister()

Return true if node is a physical register. (must be overriden by subclasses)

isRegisterOperand

public boolean isRegisterOperand()

Is register operand?

pickUpUses

public final void pickUpUses(PickUpVariable receiver)

Pick up uses of register variables in this L-expression. Picked up variables are passed thru call-back object receiver.

pickUpDefs

public final void pickUpDefs(PickUpVariable receiver)

Pick up definitions of register variables in this L-expression. Picked up variables are passed thru call-back object receiver.

toSexp

public java.lang.Object toSexp()

Convert to external LIR format.

toString

public java.lang.String toString()

Visualize

hashCode

public int hashCode()

Return hash value of LirNode.

equals

public boolean equals(java.lang.Object x)

Return true if this object equals to x

accept

public abstract void accept(LirVisitor v)

Accept visitor v

toStringExp

public java.lang.String toStringExp()

Deprecated.

Convert integer or address constant to string.