org.graalvm.compiler.core.common.type

Class PrimitiveStamp

java.lang.Object

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

org.graalvm.compiler.core.common.type.ArithmeticStamp

org.graalvm.compiler.core.common.type.PrimitiveStamp

All Implemented Interfaces:

SpeculationReasonGroup.SpeculationContextObject

Direct Known Subclasses:

FloatStamp, IntegerStamp

public abstract class PrimitiveStamp
extends ArithmeticStamp

Type describing primitive values.

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	PrimitiveStamp(int bits, ArithmeticOpTable ops)

Method Summary

Modifier and Type	Method and Description
void	accept(SpeculationReasonGroup.SpeculationContextObject.Visitor v)
boolean	equals(Object obj)
int	getBits() The width in bits of the value described by this stamp.
static int	getBits(Stamp stamp)
int	hashCode()
Constant	readConstant(MemoryAccessProvider provider, Constant base, long displacement) Read a value of this stamp from memory.
protected JavaConstant	readJavaConstant(MemoryAccessProvider provider, Constant base, long displacement, int accessBits)

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

deserialize, getOps, improveWith

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

alwaysDistinct, asConstant, constant, empty, getLIRKind, getStackKind, hasValues, isCompatible, isCompatible, isEmpty, isPointerStamp, isUnrestricted, javaType, join, makeSymbolic, meet, neverDistinct, readConstant, toString, tryImproveWith, unrestricted

Methods inherited from class java.lang.Object

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

Constructor Detail

PrimitiveStamp

protected PrimitiveStamp(int bits,
                         ArithmeticOpTable ops)

Method Detail

accept

public void accept(SpeculationReasonGroup.SpeculationContextObject.Visitor v)

getBits

public int getBits()

The width in bits of the value described by this stamp.

getBits

public static int getBits(Stamp stamp)

readConstant

public 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.

readJavaConstant

protected JavaConstant readJavaConstant(MemoryAccessProvider provider,
                                        Constant base,
                                        long displacement,
                                        int accessBits)

Parameters:

accessBits - the number of bits to read from memory (must be 8, 16, 32 or 64)

hashCode

public int hashCode()

Overrides:

hashCode in class ArithmeticStamp

equals

public boolean equals(Object obj)

Overrides:

equals in class ArithmeticStamp