Package jminusminus

Class NLIRConditionalJump

java.lang.Object

jminusminus.NLIRInstruction

jminusminus.NLIRConditionalJump

class NLIRConditionalJump
extends NLIRInstruction

LIR instruction representing an conditional jump instructions in JVM.

Field Summary

Fields inherited from class jminusminus.NLIRInstruction

block, id, lirMnemonic, reads, write

Constructor Summary

Constructors

Constructor	Description
NLIRConditionalJump(NBasicBlock block, int id, NLIRInstruction lhs, NLIRInstruction rhs, int opcode, NBasicBlock onTrueDestination, NBasicBlock onFalseDestination)	Constructs an NLIRConditionalJump object.

Method Summary

Modifier and Type	Method	Description
void	allocatePhysicalRegisters()	Replace references to virtual registers in this LIR instruction with references to physical registers.
void	toSpim(PrintWriter out)	Translates this LIR instruction into SPIM and writes it out to the specified output stream.
String	toString()	Returns a string representation of this instruction.

Methods inherited from class java.lang.Object

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

Constructor Details

NLIRConditionalJump

public NLIRConditionalJump(NBasicBlock block,
 int id,
 NLIRInstruction lhs,
 NLIRInstruction rhs,
 int opcode,
 NBasicBlock onTrueDestination,
 NBasicBlock onFalseDestination)

Constructs an NLIRConditionalJump object.

Parameters:

block - enclosing block.

id - identifier of the instruction.

lhs - lhs LIR.

rhs - rhs LIR.

opcode - opcode in the test.

onTrueDestination - block to jump to on true.

onFalseDestination - block to jump to on false.

Method Details

allocatePhysicalRegisters

public void allocatePhysicalRegisters()

Replace references to virtual registers in this LIR instruction with references to physical registers.

Overrides:

allocatePhysicalRegisters in class NLIRInstruction

toSpim

public void toSpim(PrintWriter out)

Translates this LIR instruction into SPIM and writes it out to the specified output stream.

Overrides:

toSpim in class NLIRInstruction

Parameters:

out - output stream for SPIM code.

toString

public String toString()

Returns a string representation of this instruction.

Overrides:

toString in class NLIRInstruction

Returns:

a string representation of this instruction.