com.oracle.graal.nodes.memory

Class FloatableAccessNode

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.nodes.DeoptimizingFixedWithNextNode

com.oracle.graal.nodes.memory.FixedAccessNode

com.oracle.graal.nodes.memory.FloatableAccessNode

All Implemented Interfaces:

NodeInterface, DeoptimizingNode, DeoptimizingNode.DeoptBefore, GuardedNode, Access, HeapAccess, NodeWithState, Cloneable, Formattable, KindProvider

Direct Known Subclasses:

ReadNode

public abstract class FloatableAccessNode
extends FixedAccessNode

An FixedAccessNode that can be converted to a FloatingAccessNode.

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

Nested classes/interfaces inherited from interface com.oracle.graal.nodes.memory.HeapAccess

HeapAccess.BarrierType

Nested classes/interfaces inherited from interface com.oracle.graal.nodes.DeoptimizingNode

DeoptimizingNode.DeoptAfter, DeoptimizingNode.DeoptBefore, DeoptimizingNode.DeoptDuring

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	forceFixed
static NodeClass<FloatableAccessNode>	TYPE

Fields inherited from class com.oracle.graal.nodes.memory.FixedAccessNode

address, barrierType, guard, location, nullCheck

Fields inherited from class com.oracle.graal.nodes.DeoptimizingFixedWithNextNode

stateBefore

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	FloatableAccessNode(NodeClass<? extends FloatableAccessNode> c, AddressNode address, LocationIdentity location, Stamp stamp)
protected	FloatableAccessNode(NodeClass<? extends FloatableAccessNode> c, AddressNode address, LocationIdentity location, Stamp stamp, GuardingNode guard, HeapAccess.BarrierType barrierType)
protected	FloatableAccessNode(NodeClass<? extends FloatableAccessNode> c, AddressNode address, LocationIdentity location, Stamp stamp, GuardingNode guard, HeapAccess.BarrierType barrierType, boolean nullCheck, FrameState stateBefore)

Method Summary

Modifier and Type	Method and Description
abstract FloatingAccessNode	asFloatingNode(MemoryNode lastLocationAccess)
boolean	canFloat() AccessNodes can float only if their location identities are not ANY_LOCATION.
void	setForceFixed(boolean flag)

Methods inherited from class com.oracle.graal.nodes.memory.FixedAccessNode

canDeoptimize, getAddress, getBarrierType, getGuard, getLocationIdentity, getNullCheck, setAddress, setGuard, setNullCheck

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

setStateBefore, stateBefore

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.memory.Access

canNullCheck

Methods inherited from interface com.oracle.graal.nodes.extended.GuardedNode

asNode

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

states

Field Detail

TYPE

public static final NodeClass<FloatableAccessNode> TYPE

forceFixed

protected boolean forceFixed

Constructor Detail

FloatableAccessNode

protected FloatableAccessNode(NodeClass<? extends FloatableAccessNode> c,
                              AddressNode address,
                              LocationIdentity location,
                              Stamp stamp)

FloatableAccessNode

protected FloatableAccessNode(NodeClass<? extends FloatableAccessNode> c,
                              AddressNode address,
                              LocationIdentity location,
                              Stamp stamp,
                              GuardingNode guard,
                              HeapAccess.BarrierType barrierType)

FloatableAccessNode

protected FloatableAccessNode(NodeClass<? extends FloatableAccessNode> c,
                              AddressNode address,
                              LocationIdentity location,
                              Stamp stamp,
                              GuardingNode guard,
                              HeapAccess.BarrierType barrierType,
                              boolean nullCheck,
                              FrameState stateBefore)

Method Detail

asFloatingNode

public abstract FloatingAccessNode asFloatingNode(MemoryNode lastLocationAccess)

setForceFixed

public void setForceFixed(boolean flag)

canFloat

public boolean canFloat()

AccessNodes can float only if their location identities are not ANY_LOCATION. Furthermore, in case G1 is enabled any access (read) to the java.lang.ref.Reference.referent field which has an attached write barrier with pre-semantics can not also float.