com.oracle.graal.lir.sparc

Class SPARCSaveRegistersOp

java.lang.Object

com.oracle.graal.lir.LIRInstruction

com.oracle.graal.lir.sparc.SPARCLIRInstruction

com.oracle.graal.lir.sparc.SPARCSaveRegistersOp

All Implemented Interfaces:

StandardOp.SaveRegistersOp

public class SPARCSaveRegistersOp
extends SPARCLIRInstruction
implements StandardOp.SaveRegistersOp

Saves registers to stack slots.

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.graal.lir.sparc.SPARCLIRInstruction

SPARCLIRInstruction.SizeEstimate

Nested classes/interfaces inherited from class com.oracle.graal.lir.LIRInstruction

LIRInstruction.Alive, LIRInstruction.Def, LIRInstruction.OperandFlag, LIRInstruction.OperandMode, LIRInstruction.State, LIRInstruction.Temp, LIRInstruction.Use

Field Summary

Fields

Modifier and Type	Field and Description
static Register	RETURN_REGISTER_STORAGE
protected Register[]	savedRegisters The registers (potentially) saved by this operation.
static SPARCLIRInstruction.SizeEstimate	SIZE
protected StackSlotValue[]	slots The slots to which the registers are saved.
protected boolean	supportsRemove Specifies if remove(Set) should have an effect.
static LIRInstructionClass<SPARCSaveRegistersOp>	TYPE

Fields inherited from class com.oracle.graal.lir.sparc.SPARCLIRInstruction

delayedControlTransfer

Fields inherited from class com.oracle.graal.lir.LIRInstruction

ADDRESS_FLAGS, ALLOWED_FLAGS

Constructor Summary

Constructors

Constructor and Description
SPARCSaveRegistersOp(Register[] savedRegisters, StackSlotValue[] savedRegisterLocations, boolean supportsRemove)

Method Summary

Modifier and Type	Method and Description
void	emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm)
RegisterSaveLayout	getMap(FrameMap frameMap) Gets a map from the saved registers saved by this operation to the frame slots in which they are saved.
StackSlotValue[]	getSlots()
private static int	indexForStackSlot(FrameMap frameMap, StackSlot slot) Computes the index of a stack slot relative to slot 0.
(package private) static int	prune(Set<Register> toRemove, Register[] registers)
int	remove(Set<Register> doNotSave) Prunes doNotSave from the registers saved by this operation.
boolean	supportsRemove() Determines if the StandardOp.SaveRegistersOp.remove(Set) operation is supported for this object.

Methods inherited from class com.oracle.graal.lir.sparc.SPARCLIRInstruction

emitCode, estimateSize, leavesRegisterWindow, setDelayedControlTransfer

Methods inherited from class com.oracle.graal.lir.LIRInstruction

destroysCallerSavedRegisters, forEachAlive, forEachAlive, forEachInput, forEachInput, forEachOutput, forEachOutput, forEachRegisterHint, forEachRegisterHint, forEachState, forEachState, forEachState, forEachState, forEachTemp, forEachTemp, getLIRInstructionClass, hasOperands, hasState, id, name, setId, toString, toStringWithIdPrefix, verify, visitEachAlive, visitEachAlive, visitEachInput, visitEachInput, visitEachOutput, visitEachOutput, visitEachState, visitEachState, visitEachTemp, visitEachTemp

Methods inherited from class java.lang.Object

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

Field Detail

TYPE

public static final LIRInstructionClass<SPARCSaveRegistersOp> TYPE

RETURN_REGISTER_STORAGE

public static final Register RETURN_REGISTER_STORAGE

SIZE

public static final SPARCLIRInstruction.SizeEstimate SIZE

savedRegisters

protected final Register[] savedRegisters

The registers (potentially) saved by this operation.

slots

protected final StackSlotValue[] slots

The slots to which the registers are saved.

supportsRemove

protected final boolean supportsRemove

Specifies if remove(Set) should have an effect.

Constructor Detail

SPARCSaveRegistersOp

public SPARCSaveRegistersOp(Register[] savedRegisters,
                            StackSlotValue[] savedRegisterLocations,
                            boolean supportsRemove)

Parameters:

savedRegisters - the registers saved by this operation which may be subject to pruning

savedRegisterLocations - the slots to which the registers are saved

supportsRemove - determines if registers can be pruned

Method Detail

emitCode

public void emitCode(CompilationResultBuilder crb,
                     SPARCMacroAssembler masm)

Specified by:

emitCode in class SPARCLIRInstruction

getSlots

public StackSlotValue[] getSlots()

supportsRemove

public boolean supportsRemove()

Description copied from interface: StandardOp.SaveRegistersOp

Determines if the StandardOp.SaveRegistersOp.remove(Set) operation is supported for this object.

Specified by:

supportsRemove in interface StandardOp.SaveRegistersOp

remove

public int remove(Set<Register> doNotSave)

Description copied from interface: StandardOp.SaveRegistersOp

Prunes doNotSave from the registers saved by this operation.

Specified by:

remove in interface StandardOp.SaveRegistersOp

Parameters:

doNotSave - registers that should not be saved by this operation

Returns:

the number of registers pruned

prune

static int prune(Set<Register> toRemove,
                 Register[] registers)

getMap

public RegisterSaveLayout getMap(FrameMap frameMap)

Description copied from interface: StandardOp.SaveRegistersOp

Gets a map from the saved registers saved by this operation to the frame slots in which they are saved.

Specified by:

getMap in interface StandardOp.SaveRegistersOp

Parameters:

frameMap - used to convert a virtual slot to a frame slot index

indexForStackSlot

private static int indexForStackSlot(FrameMap frameMap,
                                     StackSlot slot)

Computes the index of a stack slot relative to slot 0. This is also the bit index of stack slots in the reference map.

Parameters:

slot - a stack slot

Returns:

the index of the stack slot