com.oracle.graal.lir

Class StandardOp.LabelOp

java.lang.Object

com.oracle.graal.lir.LIRInstruction

com.oracle.graal.lir.StandardOp.LabelOp

Enclosing class:

StandardOp

public static final class StandardOp.LabelOp
extends LIRInstruction

LIR operation that defines the position of a label.

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.graal.lir.LIRInstruction

LIRInstruction.Alive, LIRInstruction.Def, LIRInstruction.OperandFlag, LIRInstruction.OperandMode, LIRInstruction.State, LIRInstruction.Temp, LIRInstruction.Use

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	align
private Value[]	incomingValues In the LIR, every register and variable must be defined before it is used.
private Label	label
private int	size
static LIRInstructionClass<StandardOp.LabelOp>	TYPE

Fields inherited from class com.oracle.graal.lir.LIRInstruction

ADDRESS_FLAGS, ALLOWED_FLAGS

Constructor Summary

Constructors

Constructor and Description
LabelOp(Label label, boolean align)

Method Summary

Modifier and Type	Method and Description
void	addIncomingValues(Value[] values)
private boolean	checkRange(int idx)
void	clearIncomingValues()
void	emitCode(CompilationResultBuilder crb)
int	getIncomingSize()
Value	getIncomingValue(int idx)
Label	getLabel()
boolean	isPhiIn()
void	setIncomingValues(Value[] values)

Methods inherited from class com.oracle.graal.lir.LIRInstruction

destroysCallerSavedRegisters, forEachAlive, forEachAlive, forEachInput, forEachInput, forEachOutput, forEachOutput, forEachRegisterHint, forEachRegisterHint, forEachState, forEachState, forEachState, forEachState, forEachTemp, forEachTemp, getLIRInstructionClass, hasOperands, hasState, id, name, setId, toString, toStringWithIdPrefix, verify, visitEachAlive, visitEachAlive, visitEachInput, visitEachInput, visitEachOutput, visitEachOutput, visitEachState, visitEachState, visitEachTemp, visitEachTemp

Methods inherited from class java.lang.Object

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

Field Detail

TYPE

public static final LIRInstructionClass<StandardOp.LabelOp> TYPE

incomingValues

private Value[] incomingValues

In the LIR, every register and variable must be defined before it is used. For method parameters that are passed in fixed registers, exception objects passed to the exception handler in a fixed register, or any other use of a fixed register not defined in this method, an artificial definition is necessary. To avoid spill moves to be inserted between the label at the beginning of a block an an actual definition in the second instruction of a block, the registers are defined here in the label.

size

private int size

label

private final Label label

align

private final boolean align

Constructor Detail

LabelOp

public LabelOp(Label label,
               boolean align)

Method Detail

setIncomingValues

public void setIncomingValues(Value[] values)

getIncomingSize

public int getIncomingSize()

getIncomingValue

public Value getIncomingValue(int idx)

clearIncomingValues

public void clearIncomingValues()

addIncomingValues

public void addIncomingValues(Value[] values)

checkRange

private boolean checkRange(int idx)

emitCode

public void emitCode(CompilationResultBuilder crb)

Specified by:

emitCode in class LIRInstruction

getLabel

public Label getLabel()

isPhiIn

public boolean isPhiIn()

Returns:

true if this label acts as a PhiIn.