public final class ArrayLengthNode extends FixedWithNextNode implements Canonicalizable.Unary<ValueNode>, Lowerable, Virtualizable
ArrayLength
instruction gets the length of an array.Node.ConstantNodeParameter, Node.InjectedNodeParameter, Node.Input, Node.NodeIntrinsic, Node.OptionalInput, Node.Successor, Node.ValueNumberable
Canonicalizable.Binary<T extends Node>, Canonicalizable.BinaryCommutative<T extends Node>, Canonicalizable.Unary<T extends Node>
Modifier and Type | Field and Description |
---|---|
(package private) ValueNode |
array |
static NodeClass<ArrayLengthNode> |
TYPE |
next
NODE_LIST, NOT_ITERABLE, USE_UNSAFE_TO_CLONE, WithAllEdges, WithNoEdges, WithOnlyInputEdges, WithOnlySucessorEdges
Constructor and Description |
---|
ArrayLengthNode(ValueNode array) |
Modifier and Type | Method and Description |
---|---|
ValueNode |
array() |
static int |
arrayLength(Object array) |
ValueNode |
canonical(CanonicalizerTool tool,
ValueNode forValue) |
static ValueNode |
create(ValueNode forValue,
jdk.internal.jvmci.meta.ConstantReflectionProvider constantReflection) |
ValueNode |
getValue() |
void |
lower(LoweringTool tool)
Expand this node into lower level nodes expressing the same semantics.
|
static ValueNode |
readArrayLength(ValueNode originalArray,
jdk.internal.jvmci.meta.ConstantReflectionProvider constantReflection)
Gets the length of an array if possible.
|
private static ValueNode |
readArrayLengthConstant(ValueNode originalArray,
jdk.internal.jvmci.meta.ConstantReflectionProvider constantReflection) |
private static ValueNode |
reproxyValue(ValueNode originalValue,
ValueNode value)
|
void |
virtualize(VirtualizerTool tool)
A node class can implement this method to convey information about what its effect would be
if some of its inputs were virtualized.
|
asNode, next, setNext
asConstant, asJavaConstant, getKind, graph, inferStamp, isAllowedUsageType, isConstant, isConstantPredicate, isNullConstant, setStamp, stamp, updateStamp
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
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
canonical
public static final NodeClass<ArrayLengthNode> TYPE
public ArrayLengthNode(ValueNode array)
public ValueNode getValue()
getValue
in interface Canonicalizable.Unary<ValueNode>
public static ValueNode create(ValueNode forValue, jdk.internal.jvmci.meta.ConstantReflectionProvider constantReflection)
public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue)
canonical
in interface Canonicalizable.Unary<ValueNode>
private static ValueNode reproxyValue(ValueNode originalValue, ValueNode value)
originalValue
- a possibly proxied valuevalue
- a value needing proxiesvalue
public static ValueNode readArrayLength(ValueNode originalArray, jdk.internal.jvmci.meta.ConstantReflectionProvider constantReflection)
array
or null if it is not availableprivate static ValueNode readArrayLengthConstant(ValueNode originalArray, jdk.internal.jvmci.meta.ConstantReflectionProvider constantReflection)
public void lower(LoweringTool tool)
Lowerable
public static int arrayLength(Object array)
public void virtualize(VirtualizerTool tool)
Virtualizable
virtualize
in interface Virtualizable
tool
- the tool used to describe the effects of this node