org.graalvm.compiler.nodes.calc

Class UnaryNode

java.lang.Object

org.graalvm.compiler.graph.Node

org.graalvm.compiler.nodes.ValueNode

org.graalvm.compiler.nodes.calc.FloatingNode

org.graalvm.compiler.nodes.calc.UnaryNode

All Implemented Interfaces:

Cloneable, Formattable, Node.ValueNumberable, CanonicalizableMarker, Canonicalizable, Canonicalizable.Unary<ValueNode>, ValueNodeInterface

Direct Known Subclasses:

AMD64X87MathIntrinsicNode, BitCountNode, BitScanForwardNode, BitScanReverseNode, CompressionNode, CountLeadingZerosNode, CountTrailingZerosNode, IntegerConvertNode, ReinterpretNode, ReverseBytesNode, RoundFloatToIntegerNode, RoundNode, SignumNode, UnaryArithmeticNode, UnaryMathIntrinsicNode, UnpackEndianHalfNode

public abstract class UnaryNode
extends FloatingNode
implements Canonicalizable.Unary<ValueNode>

The UnaryNode class is the base of arithmetic and bit logic operations with exactly one input.

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

Nested classes/interfaces inherited from interface org.graalvm.compiler.nodes.spi.Canonicalizable

Canonicalizable.Binary<T extends Node>, Canonicalizable.BinaryCommutative<T extends Node>, Canonicalizable.Ternary<T extends Node>, Canonicalizable.Unary<T extends Node>

Field Summary

Fields

Modifier and Type	Field and Description
static NodeClass<UnaryNode>	TYPE
protected ValueNode	value

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

Modifier	Constructor and Description
protected	UnaryNode(NodeClass<? extends UnaryNode> c, Stamp stamp, ValueNode value) Creates a new UnaryNode instance.

Method Summary

Modifier and Type	Method and Description
Stamp	foldStamp(Stamp newStamp) Compute an improved for this node using the passed in stamp.
ValueNode	getValue() Gets the current value of the input, so that calling Canonicalizable.Unary.canonical(CanonicalizerTool, Node) with the value returned from this method should behave exactly like Canonicalizable.canonical(CanonicalizerTool).
boolean	inferStamp() This method can be overridden by subclasses of ValueNode if they need to recompute their stamp if their inputs change.
void	setValue(ValueNode value)

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

asConstant, asJavaConstant, asNode, asSerializableConstant, checkReplaceAtUsagesInvariants, getStackKind, graph, hasUsagesOtherThan, 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, toString, updateNodeSourcePosition, updatePredecessor, updateUsages, usages, valueEquals, verify, 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.spi.Canonicalizable.Unary

canonical, canonical

Field Detail

TYPE

public static final NodeClass<UnaryNode> TYPE

value

protected ValueNode value

Constructor Detail

UnaryNode

protected UnaryNode(NodeClass<? extends UnaryNode> c,
                    Stamp stamp,
                    ValueNode value)

Creates a new UnaryNode instance.

Parameters:

stamp - the result type of this instruction

value - the input instruction

Method Detail

getValue

public ValueNode getValue()

Description copied from interface: Canonicalizable.Unary

Gets the current value of the input, so that calling Canonicalizable.Unary.canonical(CanonicalizerTool, Node) with the value returned from this method should behave exactly like Canonicalizable.canonical(CanonicalizerTool).

Specified by:

getValue in interface Canonicalizable.Unary<ValueNode>

setValue

public void setValue(ValueNode value)

inferStamp

public boolean inferStamp()

Description copied from class: ValueNode

This method can be overridden by subclasses of ValueNode if they need to recompute their stamp if their inputs change. A typical implementation will compute the stamp and pass it to ValueNode.updateStamp(Stamp), whose return value can be used as the result of this method.

Overrides:

inferStamp in class ValueNode

Returns:

true if the stamp has changed, false otherwise.

foldStamp

public Stamp foldStamp(Stamp newStamp)

Compute an improved for this node using the passed in stamp. The stamp must be compatible with the current value of UnaryNode.value. This code is used to provide the default implementation of UnaryNode.inferStamp() and may be used by external optimizations.

Parameters:

newStamp -