org.graalvm.compiler.nodes.memory

Interface MemoryKill

All Superinterfaces:

MemoryKillMarker, ValueNodeInterface

All Known Subinterfaces:

ForeignCall, Invoke, MacroInvokable, MemoryEdgeProxy, MonitorExit, MultiMemoryKill, SingleMemoryKill

All Known Implementing Classes:

AbstractCompareAndSwapNode, AbstractMemoryCheckpoint, AbstractUnsafeCompareAndSwapNode, AbstractWriteNode, AccessMonitorNode, AESNode, AMD64CalcStringAttributesMacroNode, ArrayCopyCallNode, ArrayCopyNode, ArrayCopyWithConversionsNode, ArrayCopyWithDelayedLoweringNode, AtomicReadAndAddNode, AtomicReadAndWriteNode, BasicArrayCopyNode, BasicObjectCloneNode, BeginLockScopeNode, BytecodeExceptionNode, CallSiteTargetNode, CheckcastArrayCopyCallNode, CommitAllocationNode, CounterModeAESNode, EndLockScopeNode, ExceptionObjectNode, FallbackInvokeWithExceptionNode, FastNotifyNode, FinalFieldBarrierNode, ForeignCallNode, GenericArrayCopyCallNode, GHASHProcessBlocksNode, GuardedUnsafeLoadNode, HotSpotIdentityHashCodeNode, HotSpotReflectionGetCallerClassNode, HotSpotStoreReservedReferenceNode, IdentityHashCodeNode, InvokeNode, InvokeWithExceptionNode, JavaReadNode, JavaWriteNode, LoadFieldNode, LogicCompareAndSwapNode, LoweredAtomicReadAndAddNode, LoweredAtomicReadAndWriteNode, MacroNode, MacroWithExceptionNode, MembarNode, MemoryAnchorNode, MemoryKillStubIntrinsicNode, MemoryMapNode, MemoryPhiNode, MemoryProxyNode, MethodHandleNode, MonitorEnterNode, MonitorExitNode, ObjectCloneNode, OSRMonitorEnterNode, OSRStartNode, ProfileBooleanNode, PureFunctionMacroNode, RawLoadNode, RawStoreNode, ReadNode, ReflectionGetCallerClassNode, SideEffectFreeWriteNode, SideEffectNode, SnippetSubstitutionNode, StartNode, StoreFieldNode, StoreIndexedNode, StringLatin1InflateNode, StringToBytesNode, StringUTF16CompressNode, StubForeignCallNode, StubStartNode, UnreachableBeginNode, UnsafeCompareAndExchangeNode, UnsafeCompareAndSwapNode, UnsafeCopyMemoryNode, UnsafeMemoryStoreNode, ValidateNewInstanceClassNode, ValueCompareAndSwapNode, VirtualizableInvokeMacroNode, WriteNode, ZeroMemoryNode

public interface MemoryKill
extends ValueNodeInterface, MemoryKillMarker

This interface marks nodes that kill a set of memory locations represented by LocationIdentity (i.e. change a value at one or more locations that belong to these location identities). This does not only include real memory kills like subclasses of FixedNode that, e.g., write a memory location, but also conceptual memory kills, i.e., nodes in the memory graph that mark the last accesses to such a location, like a MemoryPhiNode node.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	MemoryKill.NoLocation

Field Summary

Fields

Modifier and Type	Field and Description
static org.graalvm.word.LocationIdentity[]	MULTI_KILL_NO_LOCATION Special LocationIdentity used to express that a MultiMemoryKill actually does not kill any location.
static org.graalvm.word.LocationIdentity	NO_LOCATION Special LocationIdentity used to express that this location is never killing anything, thus it is LocationIdentity.isImmutable() true and should only be used very carefully.

Method Summary

Modifier and Type	Method and Description
static MultiMemoryKill	asMultiMemoryKill(Node n)
static SingleMemoryKill	asSingleMemoryKill(Node n)
static boolean	isMemoryKill(Node n) Determine if the given node represents a MemoryKill in Graal IR.
static boolean	isMultiMemoryKill(Node n)
static boolean	isSingleMemoryKill(Node n)

Methods inherited from interface org.graalvm.compiler.nodes.ValueNodeInterface

asNode

Field Detail

NO_LOCATION

static final org.graalvm.word.LocationIdentity NO_LOCATION

Special LocationIdentity used to express that this location is never killing anything, thus it is LocationIdentity.isImmutable() true and should only be used very carefully.

MULTI_KILL_NO_LOCATION

static final org.graalvm.word.LocationIdentity[] MULTI_KILL_NO_LOCATION

Special LocationIdentity used to express that a MultiMemoryKill actually does not kill any location. Using this location can be handy to express that a memory kill only kills under certain, parameterized, conditions. Should be used with caution.

Method Detail

isMemoryKill

static boolean isMemoryKill(Node n)

Determine if the given node represents a MemoryKill in Graal IR. A node is a memory kill if it implements the memory kill API and actually kills a location identity other than MemoryKill.NoLocation.

isSingleMemoryKill

static boolean isSingleMemoryKill(Node n)

isMultiMemoryKill

static boolean isMultiMemoryKill(Node n)

asSingleMemoryKill

static SingleMemoryKill asSingleMemoryKill(Node n)

asMultiMemoryKill

static MultiMemoryKill asMultiMemoryKill(Node n)