org.jikesrvm.compilers.opt.ir.operand

Class TIBConstantOperand

java.lang.Object

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

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

org.jikesrvm.compilers.opt.ir.operand.TIBConstantOperand

public final class TIBConstantOperand
extends ConstantOperand

Represents a constant TIB operand, found for example, from an ObjectConstantOperand.

NB: we don't use an object constant operand because:

1. TIBs don't form part of the object literals
2. Loads on the contents of a TIB can be turned into constant moves, whereas for arrays in general this isn't the case.

NB: we don't use TypeOperand as the type of the operand is RVMType, whereas a TIBs type is Object[].

See Also:

Operand

Field Summary

Fields

Modifier and Type	Field and Description
RVMType	value The non-null type for this TIB

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

instruction

Constructor Summary

Constructors

Constructor and Description
TIBConstantOperand(RVMType v) Construct a new TIB 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	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, isMovableObjectConstant, 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 RVMType value

The non-null type for this TIB

Constructor Detail

TIBConstantOperand

public TIBConstantOperand(RVMType v)

Construct a new TIB constant operand

Parameters:

v - the type of this TIB

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:

TypeReference.TIB

isRef

public 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

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.