com.oracle.graal.replacements.nodes

Class MacroNode

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.MacroNode

All Implemented Interfaces:

NodeInterface, Lowerable, Cloneable, Formattable, KindProvider

Direct Known Subclasses:

MacroStateSplitNode

public abstract class MacroNode
extends FixedWithNextNode
implements Lowerable

Macro nodes can be used to temporarily replace an invoke. They can, for example, be used to implement constant folding for known JDK functions like Class.isInterface().

During lowering, multiple sources are queried in order to look for a replacement:

• If getLoweredSnippetGraph(LoweringTool) returns a non-null result, this graph is used as a replacement.
• If a MethodSubstitution for the target method is found, this substitution is used as a replacement.
• Otherwise, the macro node is replaced with an InvokeNode. Note that this is only possible if the macro node is a MacroStateSplitNode.

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 NodeInputList<ValueNode>	arguments
protected int	bci
protected CallTargetNode.InvokeKind	invokeKind
protected JavaType	returnType
protected ResolvedJavaMethod	targetMethod
static NodeClass<MacroNode>	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

Modifier	Constructor and Description
protected	MacroNode(NodeClass<? extends MacroNode> c, CallTargetNode.InvokeKind invokeKind, ResolvedJavaMethod targetMethod, int bci, JavaType returnType, ValueNode... arguments)

Method Summary

Modifier and Type	Method and Description
protected InvokeNode	createInvoke()
int	getBci()
protected StructuredGraph	getLoweredSnippetGraph(LoweringTool tool) Gets a snippet to be used for lowering this macro node.
protected StructuredGraph	getLoweredSubstitutionGraph(LoweringTool tool) Gets a normal method substitution to be used for lowering this macro node.
JavaType	getReturnType()
ResolvedJavaMethod	getTargetMethod()
void	lower(LoweringTool tool) Expand this node into lower level nodes expressing the same semantics.
protected StructuredGraph	lowerReplacement(StructuredGraph replacementGraph, LoweringTool tool) Applies lowering to a replacement graph.
protected InvokeNode	replaceWithInvoke()
private static Stamp	returnStamp(JavaType returnType)
protected FrameState	stateAfter()

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, toString, updatePredecessor, updateUsages, updateUsagesInterface, usages, valueEquals, verifyEdges, verifyInputs

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.oracle.graal.nodes.spi.Lowerable

asNode

Field Detail

TYPE

public static final NodeClass<MacroNode> TYPE

arguments

protected NodeInputList<ValueNode> arguments

bci

protected final int bci

targetMethod

protected final ResolvedJavaMethod targetMethod

returnType

protected final JavaType returnType

invokeKind

protected final CallTargetNode.InvokeKind invokeKind

Constructor Detail

MacroNode

protected MacroNode(NodeClass<? extends MacroNode> c,
                    CallTargetNode.InvokeKind invokeKind,
                    ResolvedJavaMethod targetMethod,
                    int bci,
                    JavaType returnType,
                    ValueNode... arguments)

Method Detail

returnStamp

private static Stamp returnStamp(JavaType returnType)

getBci

public int getBci()

getTargetMethod

public ResolvedJavaMethod getTargetMethod()

getReturnType

public JavaType getReturnType()

stateAfter

protected FrameState stateAfter()

getLoweredSnippetGraph

protected StructuredGraph getLoweredSnippetGraph(LoweringTool tool)

Gets a snippet to be used for lowering this macro node. The returned graph (if non-null) must have been lowered.

getLoweredSubstitutionGraph

protected StructuredGraph getLoweredSubstitutionGraph(LoweringTool tool)

Gets a normal method substitution to be used for lowering this macro node. This is only called if getLoweredSnippetGraph(LoweringTool) returns null. The returned graph (if non-null) must have been lowered.

lowerReplacement

protected StructuredGraph lowerReplacement(StructuredGraph replacementGraph,
                                           LoweringTool tool)

Applies lowering to a replacement graph.

Parameters:

replacementGraph - a replacement (i.e., snippet or method substitution) graph

lower

public void lower(LoweringTool tool)

Description copied from interface: Lowerable

Expand this node into lower level nodes expressing the same semantics. If the introduced nodes are themselves lowerable, they should be recursively lowered as part of this call.

Specified by:

lower in interface Lowerable

replaceWithInvoke

protected InvokeNode replaceWithInvoke()

createInvoke

protected InvokeNode createInvoke()