com.oracle.graal.replacements.nodes

Class ReadRegisterNode

java.lang.Object

com.oracle.graal.graph.Node

com.oracle.graal.nodes.ValueNode

com.oracle.graal.nodes.FixedNode

com.oracle.graal.nodes.FixedWithNextNode

com.oracle.graal.replacements.nodes.ReadRegisterNode

All Implemented Interfaces:

LIRLowerable, Cloneable, Formattable, KindProvider

public final class ReadRegisterNode
extends FixedWithNextNode
implements LIRLowerable

Access the value of a specific register.

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.graal.graph.Node

Node.ConstantNodeParameter, Node.InjectedNodeParameter, Node.Input, Node.NodeIntrinsic, 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 com.oracle.graal.nodes.FixedWithNextNode

next

Fields inherited from class com.oracle.graal.nodes.ValueNode

stamp

Fields inherited from class com.oracle.graal.graph.Node

NODE_LIST, NOT_ITERABLE, USE_UNSAFE_TO_CLONE, WithAllEdges, WithNoEdges, WithOnlyInputEdges, WithOnlySucessorEdges

Constructor Summary

Constructors

Constructor and Description
ReadRegisterNode(Register register, boolean directUse, boolean incoming)
ReadRegisterNode(Register register, Kind kind, 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 node with a given Verbosity.

Methods inherited from class com.oracle.graal.nodes.FixedWithNextNode

asNode, next, setNext

Methods inherited from class com.oracle.graal.nodes.FixedNode

verify

Methods inherited from class com.oracle.graal.nodes.ValueNode

asConstant, asJavaConstant, getKind, graph, inferStamp, isAllowedUsageType, isConstant, isConstantPredicate, isNullConstant, setStamp, stamp, updateStamp

Methods inherited from class com.oracle.graal.graph.Node

acceptInputs, acceptSuccessors, afterClone, assertFalse, assertTrue, cfgPredecessors, cfgSuccessors, clearInputs, clearSuccessors, copyWithInputs, copyWithInputs, equals, fail, formatTo, getDebugProperties, getDebugProperties, getId, getNodeClass, getUsageAt, getUsageCount, hashCode, hasNoUsages, hasUsages, inputs, isAlive, isDeleted, markDeleted, modCount, newIdentityMap, newIdentityMap, newIdentityMap, newMap, newMap, newMap, newSet, newSet, predecessor, pushInputs, removeUsage, replaceAndDelete, replaceAtMatchingUsages, replaceAtPredecessor, replaceAtUsages, replaceAtUsages, replaceAtUsages, replaceFirstInput, replaceFirstSuccessor, safeDelete, simplify, successors, toString, updatePredecessor, updateUsages, updateUsagesInterface, usages, valueEquals, verifyEdges, verifyInputs

Methods inherited from class java.lang.Object

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

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,
                        Kind kind,
                        boolean directUse,
                        boolean incoming)

ReadRegisterNode

public ReadRegisterNode(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 node with a given Verbosity.

Overrides:

toString in class Node