com.oracle.graal.lir.framemap

Class FrameMapBuilderImpl

java.lang.Object

com.oracle.graal.lir.framemap.FrameMapBuilderImpl

All Implemented Interfaces:

FrameMapBuilder, FrameMapBuilderTool

Direct Known Subclasses:

AMD64FrameMapBuilder, SPARCFrameMapBuilder

public class FrameMapBuilderImpl
extends Object
implements FrameMapBuilderTool

A FrameMapBuilder that records allocation.

Field Summary

Fields

Modifier and Type	Field and Description
private List<CallingConvention>	calls
private CodeCacheProvider	codeCache
private FrameMap	frameMap
private int	numStackSlots
private RegisterConfig	registerConfig
private List<VirtualStackSlot>	stackSlots

Constructor Summary

Constructors

Constructor and Description
FrameMapBuilderImpl(FrameMap frameMap, CodeCacheProvider codeCache, RegisterConfig registerConfig)

Method Summary

Modifier and Type	Method and Description
VirtualStackSlot	allocateSpillSlot(LIRKind kind) Reserves a spill slot in the frame of the method being compiled.
VirtualStackSlot	allocateStackSlots(int slots, BitSet objects, List<VirtualStackSlot> outObjectStackSlots) Reserves a number of contiguous slots in the frame of the method being compiled.
FrameMap	buildFrameMap(LIRGenerationResult res, StackSlotAllocator allocator) Creates a FrameMap based on the information collected by this FrameMapBuilder.
void	callsMethod(CallingConvention cc) Informs the frame map that the compiled code calls a particular method, which may need stack space for outgoing arguments.
CodeCacheProvider	getCodeCache()
FrameMap	getFrameMap()
int	getNumberOfStackSlots() Returns the number of VirtualStackSlots created by this FrameMapBuilder.
RegisterConfig	getRegisterConfig()
List<VirtualStackSlot>	getStackSlots()
private static void	verifyStackSlotAllocation(LIRGenerationResult res)

Methods inherited from class java.lang.Object

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

Field Detail

registerConfig

private final RegisterConfig registerConfig

codeCache

private final CodeCacheProvider codeCache

frameMap

private final FrameMap frameMap

stackSlots

private final List<VirtualStackSlot> stackSlots

calls

private final List<CallingConvention> calls

numStackSlots

private int numStackSlots

Constructor Detail

FrameMapBuilderImpl

public FrameMapBuilderImpl(FrameMap frameMap,
                           CodeCacheProvider codeCache,
                           RegisterConfig registerConfig)

Method Detail

allocateSpillSlot

public VirtualStackSlot allocateSpillSlot(LIRKind kind)

Description copied from interface: FrameMapBuilder

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.

Specified by:

allocateSpillSlot in interface FrameMapBuilder

Parameters:

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

Returns:

A spill slot denoting the reserved memory area.

allocateStackSlots

public VirtualStackSlot allocateStackSlots(int slots,
                                           BitSet objects,
                                           List<VirtualStackSlot> outObjectStackSlots)

Description copied from interface: FrameMapBuilder

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.

Specified by:

allocateStackSlots in interface FrameMapBuilder

Parameters:

slots - the number of slots to reserve

objects - specifies the indexes of the object pointer slots. The caller is responsible for guaranteeing that each such object pointer slot is initialized before any instruction that uses a reference map. Without this guarantee, the garbage collector could see garbage object values.

outObjectStackSlots - if non-null, the object pointer slots allocated are added to this list

Returns:

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

getRegisterConfig

public RegisterConfig getRegisterConfig()

Specified by:

getRegisterConfig in interface FrameMapBuilder

getCodeCache

public CodeCacheProvider getCodeCache()

Specified by:

getCodeCache in interface FrameMapBuilder

getFrameMap

public FrameMap getFrameMap()

Specified by:

getFrameMap in interface FrameMapBuilderTool

getNumberOfStackSlots

public int getNumberOfStackSlots()

Description copied from interface: FrameMapBuilderTool

Returns the number of VirtualStackSlots created by this FrameMapBuilder. Can be used as an upper bound for an array indexed by VirtualStackSlot.getId().

Specified by:

getNumberOfStackSlots in interface FrameMapBuilderTool

callsMethod

public void callsMethod(CallingConvention cc)

Description copied from interface: FrameMapBuilder

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

Specified by:

callsMethod in interface FrameMapBuilder

Parameters:

cc - The calling convention for the called method.

buildFrameMap

public FrameMap buildFrameMap(LIRGenerationResult res,
                              StackSlotAllocator allocator)

Description copied from interface: FrameMapBuilder

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

Specified by:

buildFrameMap in interface FrameMapBuilder

verifyStackSlotAllocation

private static void verifyStackSlotAllocation(LIRGenerationResult res)

getStackSlots

public List<VirtualStackSlot> getStackSlots()

Specified by:

getStackSlots in interface FrameMapBuilderTool