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(<any> kind) Reserves a spill slot in the frame of the method being compiled.
abstract VirtualStackSlot	allocateStackMemory(int sizeInBytes, int alignmentInBytes) Reserves a contiguous and aligned range of memory 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(CallingConvention cc) Informs the frame map that the compiled code calls a particular method, which may need stack space for outgoing arguments.
abstract CodeCacheProvider	getCodeCache()
abstract RegisterConfig	getRegisterConfig()

Methods inherited from class java.lang.Object

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

Constructor Detail

FrameMapBuilder

public FrameMapBuilder()

Method Detail

allocateSpillSlot

public abstract VirtualStackSlot allocateSpillSlot(<any> 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.

allocateStackMemory

public abstract VirtualStackSlot allocateStackMemory(int sizeInBytes,
                                                     int alignmentInBytes)

Reserves a contiguous and aligned range of memory in the frame of the method being compiled.

Parameters:

sizeInBytes - the number of bytes to reserve. Must be > 0.

alignmentInBytes - the required alignment of the memory. Must be > 0, a power of 2, and not exceed the OS stack frame alignment.

Returns:

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

getRegisterConfig

public abstract RegisterConfig getRegisterConfig()

getCodeCache

public abstract CodeCacheProvider getCodeCache()

callsMethod

public abstract void callsMethod(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.