com.oracle.graal.graph

Annotation Type Node.NodeIntrinsic

@Retention(value=RUNTIME)
 @Target(value=METHOD)
public static @interface Node.NodeIntrinsic

Annotates a method that can be replaced by a compiler intrinsic. A (resolved) call to the annotated method can be replaced with an instance of the node class denoted by value(). For this reason, the signature of the annotated method must match the signature (excluding a prefix of injected parameters) of a factory method named "create" in the node class.

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
boolean	foldable Determines if this intrinsic can be compile-time executed.
boolean	setStampFromReturnType Determines if the stamp of the instantiated intrinsic node has its stamp set from the return type of the annotated method.
Class<?>	value Gets the Node subclass instantiated when intrinsifying a call to the annotated method.

Element Detail

value

public abstract Class<?> value

Gets the Node subclass instantiated when intrinsifying a call to the annotated method. If not specified, then the class in which the annotated method is declared is used (and is assumed to be a Node subclass).

Default:

com.oracle.graal.graph.Node.NodeIntrinsic.class

setStampFromReturnType

public abstract boolean setStampFromReturnType

Determines if the stamp of the instantiated intrinsic node has its stamp set from the return type of the annotated method.

When it is set to true, the stamp that is passed in to the constructor of ValueNode is ignored and can therefore safely be null.

Default:

false

foldable

public abstract boolean foldable

Determines if this intrinsic can be compile-time executed. An attempt to execute a call (via reflection) to this intrinsic at compile-time will be made if all of its arguments are compile-time constant. If the execution succeeds without an exception, the result is inserted as a constant node in the graph.

Default:

false