org.graalvm.compiler.nodes.type

Class NarrowOopStamp

java.lang.Object

org.graalvm.compiler.core.common.type.Stamp

org.graalvm.compiler.core.common.type.AbstractPointerStamp

org.graalvm.compiler.core.common.type.AbstractObjectStamp

org.graalvm.compiler.nodes.type.NarrowOopStamp

All Implemented Interfaces:

SpeculationReasonGroup.SpeculationContextObject

Direct Known Subclasses:

HotSpotNarrowOopStamp

public abstract class NarrowOopStamp
extends AbstractObjectStamp

Nested Class Summary

Nested classes/interfaces inherited from interface org.graalvm.compiler.serviceprovider.SpeculationReasonGroup.SpeculationContextObject

SpeculationReasonGroup.SpeculationContextObject.Visitor

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	NarrowOopStamp(ResolvedJavaType type, boolean exactType, boolean nonNull, boolean alwaysNull, boolean alwaysArray, CompressEncoding encoding)

Method Summary

Modifier and Type	Method and Description
void	accept(SpeculationReasonGroup.SpeculationContextObject.Visitor v)
protected abstract AbstractObjectStamp	copyWith(ResolvedJavaType type, boolean exactType, boolean nonNull, boolean alwaysNull, boolean alwaysArray)
boolean	equals(Object obj)
CompressEncoding	getEncoding()
LIRKind	getLIRKind(LIRKindTool tool) Gets a platform dependent LIRKind that can be used to store a value of this stamp.
int	hashCode()
abstract boolean	isCompatible(Constant other) Check that the constant other is compatible with this stamp.
boolean	isCompatible(Stamp other) Check that the constant other is compatible with this stamp.
boolean	isCompressed()
abstract Constant	readConstant(MemoryAccessProvider provider, Constant base, long displacement) Read a value of this stamp from memory.
String	toString()
Stamp	uncompressed()

Methods inherited from class org.graalvm.compiler.core.common.type.AbstractObjectStamp

appendString, asAlwaysArray, constant, copyWith, empty, getStackKind, hasValues, improveWith, isAlwaysArray, isConcreteType, isExactType, javaType, join, meet, type, unrestricted

Methods inherited from class org.graalvm.compiler.core.common.type.AbstractPointerStamp

alwaysNull, asAlwaysNull, asConstant, asMaybeNull, asNonNull, defaultPointerJoin, nonNull, nullConstant, pointerAlwaysNull, pointerMaybeNull, pointerNonNull

Methods inherited from class org.graalvm.compiler.core.common.type.Stamp

alwaysDistinct, isEmpty, isPointerStamp, isUnrestricted, makeSymbolic, neverDistinct, readConstant, tryImproveWith

Methods inherited from class java.lang.Object

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

Constructor Detail

NarrowOopStamp

protected NarrowOopStamp(ResolvedJavaType type,
                         boolean exactType,
                         boolean nonNull,
                         boolean alwaysNull,
                         boolean alwaysArray,
                         CompressEncoding encoding)

Method Detail

accept

public void accept(SpeculationReasonGroup.SpeculationContextObject.Visitor v)

Specified by:

accept in interface SpeculationReasonGroup.SpeculationContextObject

Overrides:

accept in class AbstractObjectStamp

copyWith

protected abstract AbstractObjectStamp copyWith(ResolvedJavaType type,
                                                boolean exactType,
                                                boolean nonNull,
                                                boolean alwaysNull,
                                                boolean alwaysArray)

Specified by:

copyWith in class AbstractObjectStamp

uncompressed

public Stamp uncompressed()

getEncoding

public CompressEncoding getEncoding()

getLIRKind

public LIRKind getLIRKind(LIRKindTool tool)

Description copied from class: Stamp

Gets a platform dependent LIRKind that can be used to store a value of this stamp.

Specified by:

getLIRKind in class Stamp

toString

public String toString()

Specified by:

toString in class Stamp

isCompatible

public boolean isCompatible(Stamp other)

Description copied from class: Stamp

Check that the constant other is compatible with this stamp.

Specified by:

isCompatible in class Stamp

readConstant

public abstract Constant readConstant(MemoryAccessProvider provider,
                                      Constant base,
                                      long displacement)

Description copied from class: Stamp

Read a value of this stamp from memory.

Specified by:

readConstant in class Stamp

Returns:

the value read or null if the value can't be read for some reason.

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractObjectStamp

equals

public boolean equals(Object obj)

Overrides:

equals in class AbstractObjectStamp

isCompatible

public abstract boolean isCompatible(Constant other)

Description copied from class: Stamp

Check that the constant other is compatible with this stamp.

Specified by:

isCompatible in class Stamp

isCompressed

public boolean isCompressed()

Overrides:

isCompressed in class AbstractPointerStamp