org.graalvm.compiler.lir.framemap

Class FrameMapBuilder

java.lang.Object

org.graalvm.compiler.lir.framemap.FrameMapBuilder

Direct Known Subclasses:

FrameMapBuilderTool

public abstract class FrameMapBuilder
extends Object

A FrameMapBuilder is used to collect all information necessary to create a FrameMap.

Constructor Summary

Constructors

Constructor and Description
FrameMapBuilder()

Method Summary

Modifier and Type	Method and Description
abstract VirtualStackSlot	allocateSpillSlot(jdk.vm.ci.meta.ValueKind<?> kind) Reserves a spill slot in the frame of the method being compiled.
abstract VirtualStackSlot	allocateStackSlots(int slots) Reserves a number of contiguous slots in the frame of the method being compiled.
abstract FrameMap	buildFrameMap(LIRGenerationResult result) Creates a FrameMap based on the information collected by this FrameMapBuilder.
abstract void	callsMethod(jdk.vm.ci.code.CallingConvention cc) Informs the frame map that the compiled code calls a particular method, which may need stack space for outgoing arguments.
abstract jdk.vm.ci.code.CodeCacheProvider	getCodeCache()
abstract jdk.vm.ci.code.RegisterConfig	getRegisterConfig()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FrameMapBuilder

public FrameMapBuilder()

Method Detail

allocateSpillSlot

public abstract VirtualStackSlot allocateSpillSlot(jdk.vm.ci.meta.ValueKind<?> kind)

Reserves a spill slot in the frame of the method being compiled. The returned slot is aligned on its natural alignment, i.e., an 8-byte spill slot is aligned at an 8-byte boundary, unless overridden by a subclass.

Parameters:

kind - The kind of the spill slot to be reserved.

Returns:

A spill slot denoting the reserved memory area.

allocateStackSlots

public abstract VirtualStackSlot allocateStackSlots(int slots)

Reserves a number of contiguous slots in the frame of the method being compiled. If the requested number of slots is 0, this method returns null.

Parameters:

slots - the number of slots to reserve

Returns:

the first reserved stack slot (i.e., at the lowest address)

getRegisterConfig

public abstract jdk.vm.ci.code.RegisterConfig getRegisterConfig()

getCodeCache

public abstract jdk.vm.ci.code.CodeCacheProvider getCodeCache()

callsMethod

public abstract void callsMethod(jdk.vm.ci.code.CallingConvention cc)

Informs the frame map that the compiled code calls a particular method, which may need stack space for outgoing arguments.

Parameters:

cc - The calling convention for the called method.

buildFrameMap

public abstract FrameMap buildFrameMap(LIRGenerationResult result)

Creates a FrameMap based on the information collected by this FrameMapBuilder.