org.jikesrvm.compilers.opt.ir.operand

Class IntConstantOperand

java.lang.Object

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

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

org.jikesrvm.compilers.opt.ir.operand.IntConstantOperand

public final class IntConstantOperand
extends ConstantOperand

Represents a constant int operand.

See Also:

Operand

Field Summary

Fields

Modifier and Type	Field and Description
int	value Value of this operand.
static IntConstantOperand	zero Constant 0, can be copied as convenient

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

instruction

Constructor Summary

Constructors

Constructor and Description
IntConstantOperand(int v) Constructs a new int constant operand with the specified value.

Method Summary

Modifier and Type	Method and Description
Operand	copy() Return a new operand that is semantically equivalent to this.
boolean	equals(Object o)
TypeReference	getType() Return the TypeReference of the value represented by the operand.
int	hashCode()
boolean	isInt() Does the operand represent a value of the int data type?
boolean	isIntLike() Does the operand represent a value of an int-like data type?
int	lower16()
int	lower8()
boolean	similar(Operand op) Are two operands semantically equivalent?
String	toString() Returns the string representation of this operand.
int	upper16()
int	upper24()

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, isIntConstant, isLocation, isLong, isLongConstant, isMemory, isMethod, isMovableObjectConstant, isNullConstant, isObjectConstant, isRef, isRegister, isStackLocation, isStringConstant, isTIBConstant, isTrueGuard, isType, meet

Methods inherited from class java.lang.Object

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

Field Detail

zero

public static final IntConstantOperand zero

Constant 0, can be copied as convenient

value

public final int value

Value of this operand.

Constructor Detail

IntConstantOperand

public IntConstantOperand(int v)

Constructs a new int constant operand with the specified value. Type will be determined by value.

Parameters:

v - value

Method Detail

getType

public TypeReference getType()

Return the TypeReference of the value represented by the operand. For int constants we speculate on the type dependenent on the constant value.

Overrides:

getType in class Operand

Returns:

a speculation on the type of the value represented by the operand.

isIntLike

public boolean isIntLike()

Description copied from class: Operand

Does the operand represent a value of an int-like data type?

Overrides:

isIntLike in class Operand

Returns:

true

isInt

public boolean isInt()

Description copied from class: Operand

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

Overrides:

isInt in class Operand

Returns:

true

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

lower8

public int lower8()

Returns:

the lower 8 bits (as an int) of value

lower16

public int lower16()

Returns:

the lower 16 bits (as an int) of value

upper16

public int upper16()

Returns:

the upper 16 bits (as an int) of value

upper24

public int upper24()

Returns:

the upper 24 bits (as an int) of value

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.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Returns the string representation of this operand.

Overrides:

toString in class Object

Returns:

a string representation of this operand.