com.oracle.graal.nodes.calc

Class NarrowNode

java.lang.Object

com.oracle.graal.graph.Node

com.oracle.graal.nodes.ValueNode

com.oracle.graal.nodes.calc.FloatingNode

com.oracle.graal.nodes.calc.UnaryNode

com.oracle.graal.nodes.calc.IntegerConvertNode<ArithmeticOpTable.IntegerConvertOp.Narrow,ArithmeticOpTable.IntegerConvertOp.SignExtend>

com.oracle.graal.nodes.calc.NarrowNode

All Implemented Interfaces:

Node.ValueNumberable, NodeInterface, Canonicalizable, Canonicalizable.Unary<ValueNode>, ArithmeticOperation, ConvertNode, ArithmeticLIRLowerable, Cloneable, Formattable, jdk.internal.jvmci.meta.KindProvider

public final class NarrowNode
extends IntegerConvertNode<ArithmeticOpTable.IntegerConvertOp.Narrow,ArithmeticOpTable.IntegerConvertOp.SignExtend>

The NarrowNode converts an integer to a narrower integer.

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.graal.nodes.calc.IntegerConvertNode

IntegerConvertNode.SerializableIntegerConvertFunction<T>

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

Nested classes/interfaces inherited from interface com.oracle.graal.graph.spi.Canonicalizable

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

Field Summary

Fields

Modifier and Type	Field and Description
static NodeClass<NarrowNode>	TYPE

Fields inherited from class com.oracle.graal.nodes.calc.IntegerConvertNode

getOp, getReverseOp, inputBits, resultBits

Fields inherited from class com.oracle.graal.nodes.calc.UnaryNode

value

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
NarrowNode(ValueNode input, int resultBits)
NarrowNode(ValueNode input, int inputBits, int resultBits)

Method Summary

Modifier and Type	Method and Description
ValueNode	canonical(CanonicalizerTool tool, ValueNode forValue)
static ValueNode	create(ValueNode input, int resultBits)
static ValueNode	create(ValueNode input, int inputBits, int resultBits)
void	generate(NodeValueMap nodeValueMap, ArithmeticLIRGenerator gen)
boolean	isLossless() Check whether a conversion is lossless.

Methods inherited from class com.oracle.graal.nodes.calc.IntegerConvertNode

convert, convert, convert, convert, convertUnsigned, findSynonym, getInputBits, getOp, getResultBits, inferStamp, reverse

Methods inherited from class com.oracle.graal.nodes.calc.UnaryNode

getValue

Methods inherited from class com.oracle.graal.nodes.calc.FloatingNode

asNode

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

asConstant, asJavaConstant, getKind, graph, 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, verify, 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.calc.ConvertNode

asNode, getValue, preservesOrder, preservesOrder

Methods inherited from interface com.oracle.graal.graph.spi.Canonicalizable.Unary

canonical

Field Detail

TYPE

public static final NodeClass<NarrowNode> TYPE

Constructor Detail

NarrowNode

public NarrowNode(ValueNode input,
                  int resultBits)

NarrowNode

public NarrowNode(ValueNode input,
                  int inputBits,
                  int resultBits)

Method Detail

create

public static ValueNode create(ValueNode input,
                               int resultBits)

create

public static ValueNode create(ValueNode input,
                               int inputBits,
                               int resultBits)

isLossless

public boolean isLossless()

Description copied from interface: ConvertNode

Check whether a conversion is lossless.

Returns:

true iff reverse(convert(c)) == c for all c

canonical

public ValueNode canonical(CanonicalizerTool tool,
                           ValueNode forValue)

Specified by:

canonical in interface Canonicalizable.Unary<ValueNode>

Overrides:

canonical in class IntegerConvertNode<ArithmeticOpTable.IntegerConvertOp.Narrow,ArithmeticOpTable.IntegerConvertOp.SignExtend>

generate

public void generate(NodeValueMap nodeValueMap,
                     ArithmeticLIRGenerator gen)