org.graalvm.compiler.replacements.nodes

Class ReadRegisterNode

java.lang.Object

org.graalvm.compiler.graph.Node

org.graalvm.compiler.nodes.ValueNode

org.graalvm.compiler.nodes.FixedNode

org.graalvm.compiler.nodes.FixedWithNextNode

org.graalvm.compiler.replacements.nodes.ReadRegisterNode

All Implemented Interfaces:

Cloneable, Formattable, FixedNodeInterface, FixedWithNextNodeInterface, LIRLowerable, ValueNodeInterface

public final class ReadRegisterNode
extends FixedWithNextNode
implements LIRLowerable

Access the value of a specific register.

Nested Class Summary

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

Node.ConstantNodeParameter, Node.EdgeVisitor, Node.IndirectCanonicalization, Node.InjectedNodeParameter, Node.Input, Node.NodeInsertionStackTrace, Node.NodeIntrinsic, Node.NodeIntrinsicFactory, Node.OptionalInput, Node.Successor, Node.ValueNumberable

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	directUse When true, subsequent uses of this node use the fixed register; when false, the value is moved into a new virtual register so that the fixed register is not seen by uses.
protected boolean	incoming When true, this node is also an implicit definition of the value for the register allocator, i.e., the register is an implicit incoming value; when false, the register must be defined in the same method or must be an register excluded from register allocation.
protected Register	register The fixed register to access.
static NodeClass<ReadRegisterNode>	TYPE

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

next

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

EMPTY_ARRAY, stamp

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

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

Constructor Summary

Constructors

Constructor and Description
ReadRegisterNode(Register register, JavaKind kind, boolean directUse, boolean incoming)
ReadRegisterNode(Stamp stamp, Register register, boolean directUse, boolean incoming)

Method Summary

Modifier and Type	Method and Description
void	generate(NodeLIRBuilderTool generator)
String	toString(Verbosity verbosity) Creates a String representation for this with a given Verbosity.

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

asFixedWithNextNode, next, setNext

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

asFixedNode, verify

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

asConstant, asJavaConstant, asNode, asSerializableConstant, checkReplaceAtUsagesInvariants, getStackKind, graph, hasUsagesOtherThan, inferStamp, isAllowedUsageType, isConstant, isConstantPredicate, isDefaultConstant, isIllegalConstant, isJavaConstant, isNullConstant, isSerializableConstant, recursivelyDataFlowEqualsUpTo, setStamp, stamp, updateStamp, updateUsagesInterface

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

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.graalvm.compiler.nodes.FixedNodeInterface

asFixedNode

Methods inherited from interface org.graalvm.compiler.nodes.ValueNodeInterface

asNode

Field Detail

TYPE

public static final NodeClass<ReadRegisterNode> TYPE

register

protected final Register register

The fixed register to access.

directUse

protected final boolean directUse

When true, subsequent uses of this node use the fixed register; when false, the value is moved into a new virtual register so that the fixed register is not seen by uses.

incoming

protected final boolean incoming

When true, this node is also an implicit definition of the value for the register allocator, i.e., the register is an implicit incoming value; when false, the register must be defined in the same method or must be an register excluded from register allocation.

Constructor Detail

ReadRegisterNode

public ReadRegisterNode(Register register,
                        JavaKind kind,
                        boolean directUse,
                        boolean incoming)

ReadRegisterNode

public ReadRegisterNode(Stamp stamp,
                        Register register,
                        boolean directUse,
                        boolean incoming)

Method Detail

generate

public void generate(NodeLIRBuilderTool generator)

Specified by:

generate in interface LIRLowerable

toString

public String toString(Verbosity verbosity)

Description copied from class: Node

Creates a String representation for this with a given Verbosity.

Overrides:

toString in class Node