public final class BitScanForwardNode extends UnaryNode implements LIRLowerable
Node.ConstantNodeParameter, Node.InjectedNodeParameter, Node.Input, Node.NodeIntrinsic, Node.OptionalInput, Node.Successor, Node.ValueNumberableCanonicalizable.Binary<T extends Node>, Canonicalizable.BinaryCommutative<T extends Node>, Canonicalizable.Unary<T extends Node>| Modifier and Type | Field and Description |
|---|---|
static NodeClass<BitScanForwardNode> |
TYPE |
NODE_LIST, NOT_ITERABLE, USE_UNSAFE_TO_CLONE, WithAllEdges, WithNoEdges, WithOnlyInputEdges, WithOnlySucessorEdges| Constructor and Description |
|---|
BitScanForwardNode(ValueNode value) |
| Modifier and Type | Method and Description |
|---|---|
ValueNode |
canonical(CanonicalizerTool tool,
ValueNode forValue)
Similar to
Canonicalizable.canonical(CanonicalizerTool), except that
implementations should act as if the current input of the node was the given one, i.e.,
they should never look at the inputs via the this pointer. |
void |
generate(NodeLIRBuilderTool gen) |
boolean |
inferStamp()
This method can be overridden by subclasses of
ValueNode if they need to recompute
their stamp if their inputs change. |
static int |
scan(int v)
Utility method with defined return value for 0.
|
static int |
scan(long v)
Utility method with defined return value for 0.
|
static int |
unsafeScan(int v)
Raw intrinsic for bsf instruction.
|
static int |
unsafeScan(long v)
Raw intrinsic for bsf instruction.
|
asNodeasConstant, asJavaConstant, getKind, graph, isAllowedUsageType, isConstant, isConstantPredicate, isNullConstant, setStamp, stamp, updateStampacceptInputs, 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, verifyInputsclone, finalize, getClass, notify, notifyAll, wait, wait, waitcanonicalpublic static final NodeClass<BitScanForwardNode> TYPE
public BitScanForwardNode(ValueNode value)
public boolean inferStamp()
ValueNodeValueNode 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.inferStamp in class ValueNodepublic ValueNode canonical(CanonicalizerTool tool, ValueNode forValue)
Canonicalizable.UnaryCanonicalizable.canonical(CanonicalizerTool), except that
implementations should act as if the current input of the node was the given one, i.e.,
they should never look at the inputs via the this pointer.canonical in interface Canonicalizable.Unary<ValueNode>public static int scan(long v)
v - v == 0.public static int scan(int v)
v - v == 0.public static int unsafeScan(long v)
v - v == 0.public static int unsafeScan(int v)
v - v == 0.public void generate(NodeLIRBuilderTool gen)
generate in interface LIRLowerable