com.oracle.svm.hosted.nodes

Class DiscardStampNode

java.lang.Object

org.graalvm.compiler.graph.Node

org.graalvm.compiler.nodes.ValueNode

org.graalvm.compiler.nodes.FixedNode

org.graalvm.compiler.nodes.FixedWithNextNode

com.oracle.svm.hosted.nodes.DiscardStampNode

All Implemented Interfaces:

Cloneable, Formattable, org.graalvm.compiler.graph.NodeInterface, org.graalvm.compiler.nodes.FixedNodeInterface, org.graalvm.compiler.nodes.spi.LIRLowerable, org.graalvm.compiler.nodes.ValueNodeInterface

public final class DiscardStampNode
extends org.graalvm.compiler.nodes.FixedWithNextNode
implements org.graalvm.compiler.nodes.spi.LIRLowerable

Removes the stamp of the input DiscardStampNode.object to prevent type-based optimizations of Graal, for example null check and type check elimination.

Nested Class Summary

Nested classes/interfaces inherited from class org.graalvm.compiler.graph.Node

org.graalvm.compiler.graph.Node.ConstantNodeParameter, org.graalvm.compiler.graph.Node.EdgeVisitor, org.graalvm.compiler.graph.Node.IndirectCanonicalization, org.graalvm.compiler.graph.Node.InjectedNodeParameter, org.graalvm.compiler.graph.Node.Input, org.graalvm.compiler.graph.Node.NodeInsertionStackTrace, org.graalvm.compiler.graph.Node.NodeIntrinsic, org.graalvm.compiler.graph.Node.OptionalInput, org.graalvm.compiler.graph.Node.Successor, org.graalvm.compiler.graph.Node.ValueNumberable

Field Summary

Fields

Modifier and Type	Field and Description
protected org.graalvm.compiler.nodes.ValueNode	object
static org.graalvm.compiler.graph.NodeClass<DiscardStampNode>	TYPE

Fields inherited from class org.graalvm.compiler.nodes.FixedWithNextNode

next

Fields inherited from class org.graalvm.compiler.nodes.ValueNode

stamp

Fields inherited from class org.graalvm.compiler.graph.Node

NODE_LIST, NOT_ITERABLE, TRACK_CREATION_POSITION, WithAllEdges, WithNoEdges, WithOnlyInputEdges, WithOnlySucessorEdges

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DiscardStampNode(org.graalvm.compiler.nodes.ValueNode object)

Method Summary

Modifier and Type	Method and Description
static Object	discardStamp(Object object)
void	generate(org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool gen)

Methods inherited from class org.graalvm.compiler.nodes.FixedWithNextNode

asNode, next, setNext

Methods inherited from class org.graalvm.compiler.nodes.FixedNode

verify

Methods inherited from class org.graalvm.compiler.nodes.ValueNode

asConstant, asJavaConstant, getStackKind, graph, hasUsagesOtherThan, inferStamp, isAllowedUsageType, isConstant, isConstantPredicate, isDefaultConstant, isJavaConstant, isNullConstant, replaceAtUsages, setStamp, stamp, updateStamp

Methods inherited from class org.graalvm.compiler.graph.Node

afterClone, applyInputs, applySuccessors, assertFalse, assertTrue, cfgPredecessors, cfgSuccessors, clearInputs, clearNodeSourcePosition, clearSuccessors, copyWithInputs, copyWithInputs, dataFlowEquals, estimatedNodeCycles, estimatedNodeSize, fail, formatTo, getCreationPosition, getDebug, getDebugProperties, getDebugProperties, getInsertionPosition, getNodeClass, getNodeSourcePosition, getOptions, getUsageAt, getUsageCount, hasExactlyOneUsage, hashCode, hasMoreThanOneUsage, hasNoUsages, hasUsages, inputPositions, inputs, isAlive, isDeleted, isUnregistered, markDeleted, maybeNotifyZeroUsages, modCount, predecessor, pushInputs, removeUsage, replaceAndDelete, replaceAtAllUsages, replaceAtMatchingUsages, replaceAtPredecessor, replaceAtUsages, replaceAtUsages, replaceAtUsages, replaceAtUsagesAndDelete, replaceAtUsagesAndDelete, replaceFirstInput, replaceFirstSuccessor, safeDelete, setCreationPosition, setInsertionPosition, setNodeSourcePosition, simplify, successorPositions, successors, toString, toString, updateNodeSourcePosition, updatePredecessor, updateUsages, updateUsagesInterface, usages, valueEquals, verifyEdges, verifyInputs, verifySourcePosition, withNodeSourcePosition

Methods inherited from class java.lang.Object

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

Field Detail

TYPE

public static final org.graalvm.compiler.graph.NodeClass<DiscardStampNode> TYPE

object

protected org.graalvm.compiler.nodes.ValueNode object

Constructor Detail

DiscardStampNode

protected DiscardStampNode(org.graalvm.compiler.nodes.ValueNode object)

Method Detail

generate

public void generate(org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool gen)

Specified by:

generate in interface org.graalvm.compiler.nodes.spi.LIRLowerable

discardStamp

public static Object discardStamp(Object object)