org.graalvm.compiler.nodes.loop

Class BasicInductionVariable

java.lang.Object

org.graalvm.compiler.nodes.loop.InductionVariable

org.graalvm.compiler.nodes.loop.BasicInductionVariable

public class BasicInductionVariable
extends InductionVariable

Nested Class Summary

Nested classes/interfaces inherited from class org.graalvm.compiler.nodes.loop.InductionVariable

InductionVariable.Direction

Field Summary

Fields

Modifier and Type	Field and Description
protected ValueNode	init
protected BinaryArithmeticNode<?>	op
protected ValuePhiNode	phi
protected ValueNode	rawStride

Fields inherited from class org.graalvm.compiler.nodes.loop.InductionVariable

loop

Constructor Summary

Constructors

Constructor and Description
BasicInductionVariable(LoopEx loop, ValuePhiNode phi, ValueNode init, ValueNode rawStride, BinaryArithmeticNode<?> op)

Method Summary

Modifier and Type	Method and Description
long	constantExtremum()
long	constantInit()
long	constantStride()
void	deleteUnusedNodes() Deletes any nodes created within the scope of this object that have no usages.
InductionVariable.Direction	direction()
InductionVariable	duplicate() Duplicate this iv including all (non-constant) nodes.
ValueNode	exitValueNode() Returns the exit value of the induction variable.
ValueNode	extremumNode(boolean assumeLoopEntered, Stamp stamp)
BinaryArithmeticNode<?>	getOp()
StructuredGraph	graph()
ValueNode	initNode() Returns the node that gives the initial value of this induction variable.
boolean	isConstantExtremum()
boolean	isConstantInit()
boolean	isConstantStride()
ValueNode	rawStride()
void	setOp(BinaryArithmeticNode<?> newOp)
ValueNode	strideNode() Returns the stride of the induction variable.
String	toString()
ValuePhiNode	valueNode() Returns the value node that is described by this induction variable.

Methods inherited from class org.graalvm.compiler.nodes.loop.InductionVariable

constantScale, extremumNode, getLoop, isConstantScale, offsetIsZero, offsetNode

Methods inherited from class java.lang.Object

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

Field Detail

phi

protected final ValuePhiNode phi

init

protected final ValueNode init

rawStride

protected ValueNode rawStride

op

protected BinaryArithmeticNode<?> op

Constructor Detail

BasicInductionVariable

public BasicInductionVariable(LoopEx loop,
                              ValuePhiNode phi,
                              ValueNode init,
                              ValueNode rawStride,
                              BinaryArithmeticNode<?> op)

Method Detail

duplicate

public InductionVariable duplicate()

Description copied from class: InductionVariable

Duplicate this iv including all (non-constant) nodes.

Specified by:

duplicate in class InductionVariable

graph

public StructuredGraph graph()

Specified by:

graph in class InductionVariable

getOp

public BinaryArithmeticNode<?> getOp()

setOp

public void setOp(BinaryArithmeticNode<?> newOp)

direction

public InductionVariable.Direction direction()

Specified by:

direction in class InductionVariable

valueNode

public ValuePhiNode valueNode()

Description copied from class: InductionVariable

Returns the value node that is described by this induction variable.

Specified by:

valueNode in class InductionVariable

initNode

public ValueNode initNode()

Description copied from class: InductionVariable

Returns the node that gives the initial value of this induction variable.

Specified by:

initNode in class InductionVariable

rawStride

public ValueNode rawStride()

strideNode

public ValueNode strideNode()

Description copied from class: InductionVariable

Returns the stride of the induction variable. The stride is the value that is added to the induction variable at each iteration.

Specified by:

strideNode in class InductionVariable

isConstantInit

public boolean isConstantInit()

Specified by:

isConstantInit in class InductionVariable

isConstantStride

public boolean isConstantStride()

Specified by:

isConstantStride in class InductionVariable

constantInit

public long constantInit()

Specified by:

constantInit in class InductionVariable

constantStride

public long constantStride()

Specified by:

constantStride in class InductionVariable

extremumNode

public ValueNode extremumNode(boolean assumeLoopEntered,
                              Stamp stamp)

Specified by:

extremumNode in class InductionVariable

exitValueNode

public ValueNode exitValueNode()

Description copied from class: InductionVariable

Returns the exit value of the induction variable. The exit value is the value of the induction variable at the loop exit.

Specified by:

exitValueNode in class InductionVariable

isConstantExtremum

public boolean isConstantExtremum()

Specified by:

isConstantExtremum in class InductionVariable

constantExtremum

public long constantExtremum()

Specified by:

constantExtremum in class InductionVariable

deleteUnusedNodes

public void deleteUnusedNodes()

Description copied from class: InductionVariable

Deletes any nodes created within the scope of this object that have no usages.

Specified by:

deleteUnusedNodes in class InductionVariable

toString

public String toString()

Overrides:

toString in class Object