org.jikesrvm.compilers.opt.ir.operand

Class ObjectConstantOperand

java.lang.Object

org.jikesrvm.compilers.opt.ir.operand.Operand

org.jikesrvm.compilers.opt.ir.operand.ConstantOperand

org.jikesrvm.compilers.opt.ir.operand.ObjectConstantOperand

Direct Known Subclasses:

ClassConstantOperand, StringConstantOperand

public class ObjectConstantOperand
extends ConstantOperand

Represents a constant object operand (for example, from an initialized static final).

See Also:

Operand

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	movable Can this object be moved in memory?
Offset	offset Offset in JTOC where this object constant lives.
Object	value The non-null object value

Fields inherited from class org.jikesrvm.compilers.opt.ir.operand.Operand

instruction

Constructor Summary

Constructors

Constructor and Description
ObjectConstantOperand(Object v, Offset i) Construct a new object constant operand

Method Summary

Modifier and Type	Method and Description
Operand	copy() Return a new operand that is semantically equivalent to this.
TypeReference	getType() Return the TypeReference of the value represented by the operand.
boolean	isMovableObjectConstant() Is the operand a movable ObjectConstantOperand?
boolean	isRef() Does the operand represent a value of the reference data type?
boolean	similar(Operand op) Are two operands semantically equivalent?
String	toString() Returns the string representation of this operand.

Methods inherited from class org.jikesrvm.compilers.opt.ir.operand.Operand

asAddressConstant, asBlock, asBranch, asClassConstant, asCondition, asDoubleConstant, asFloatConstant, asIntConstant, asLocation, asLongConstant, asMemory, asMethod, asNullConstant, asObjectConstant, asRegister, asStackLocation, asStringConstant, asTIBConstant, asType, conservativelyApproximates, getIndexInInstruction, isAddress, isAddressConstant, isBlock, isBranch, isClassConstant, isConstant, isDefinitelyNull, isDouble, isDoubleConstant, isFloat, isFloatConstant, isInt, isIntConstant, isIntLike, isLocation, isLong, isLongConstant, isMemory, isMethod, isNullConstant, isObjectConstant, isRegister, isStackLocation, isStringConstant, isTIBConstant, isTrueGuard, isType, meet

Methods inherited from class java.lang.Object

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

Field Detail

value

public final Object value

The non-null object value

offset

public final Offset offset

Offset in JTOC where this object constant lives.

movable

private final boolean movable

Can this object be moved in memory?

Constructor Detail

ObjectConstantOperand

public ObjectConstantOperand(Object v,
                             Offset i)

Construct a new object constant operand

Parameters:

v - the object constant

i - JTOC offset of the object constant

Method Detail

copy

public Operand copy()

Description copied from class: Operand

Return a new operand that is semantically equivalent to this.

Specified by:

copy in class Operand

Returns:

a copy of this

getType

public TypeReference getType()

Description copied from class: Operand

Return the TypeReference of the value represented by the operand.

Overrides:

getType in class Operand

Returns:

the type of the value represented by the operand

isRef

public final boolean isRef()

Description copied from class: Operand

Does the operand represent a value of the reference data type?

Overrides:

isRef in class Operand

Returns:

true if the data type of this is a reference as defined by TypeReference.isReferenceType() or false if it is not.

isMovableObjectConstant

public boolean isMovableObjectConstant()

Description copied from class: Operand

Is the operand a movable ObjectConstantOperand?

Overrides:

isMovableObjectConstant in class Operand

Returns:

movable

similar

public boolean similar(Operand op)

Description copied from class: Operand

Are two operands semantically equivalent?

Specified by:

similar in class Operand

Parameters:

op - other operand

Returns:

true if this and op are semantically equivalent or false if they are not.

toString

public String toString()

Returns the string representation of this operand.

Overrides:

toString in class Object

Returns:

a string representation of this operand.