org.graalvm.compiler.lir

Class StandardOp.SaveRegistersOp

java.lang.Object

org.graalvm.compiler.lir.LIRInstruction

org.graalvm.compiler.lir.StandardOp.SaveRegistersOp

Direct Known Subclasses:

AArch64SaveRegistersOp, AMD64SaveRegistersOp

Enclosing class:

StandardOp

public abstract static class StandardOp.SaveRegistersOp
extends LIRInstruction

An operation that saves registers to the stack. The set of saved registers can be pruned and a mapping from registers to the frame slots in which they are saved can be retrieved.

Nested Class Summary

Nested classes/interfaces inherited from class org.graalvm.compiler.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
protected Register[]	savedRegisters The registers (potentially) saved by this operation.
protected AllocatableValue[]	slots The slots to which the registers are saved.
static LIRInstructionClass<StandardOp.SaveRegistersOp>	TYPE

Fields inherited from class org.graalvm.compiler.lir.LIRInstruction

ADDRESS_FLAGS, ALLOWED_FLAGS

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SaveRegistersOp(LIRInstructionClass<? extends StandardOp.SaveRegistersOp> c, Register[] savedRegisters, AllocatableValue[] savedRegisterLocations)

Method Summary

Modifier and Type	Method and Description
abstract void	emitCode(CompilationResultBuilder crb)
RegisterSaveLayout	getMap(FrameMap frameMap) Gets a map from the saved registers saved by this operation to the frame slots in which they are saved.
org.graalvm.collections.EconomicSet<Register>	getSaveableRegisters()
Register[]	getSavedRegisters()
AllocatableValue[]	getSlots()
int	remove(org.graalvm.collections.EconomicSet<Register> doNotSave) Prunes doNotSave from the registers saved by this operation.

Methods inherited from class org.graalvm.compiler.lir.LIRInstruction

addStackSlotsToTemporaries, destroysCallerSavedRegisters, forEachAlive, forEachAlive, forEachInput, forEachInput, forEachOutput, forEachOutput, forEachRegisterHint, forEachRegisterHint, forEachState, forEachState, forEachState, forEachState, forEachTemp, forEachTemp, getComment, getLIRInstructionClass, getPosition, hashCode, hasOperands, hasState, id, isLoadConstantOp, isMoveOp, isValueMoveOp, name, needsClearUpperVectorRegisters, setComment, setId, setPosition, toString, toString, toStringWithIdPrefix, verify, visitEachAlive, visitEachAlive, visitEachInput, visitEachInput, visitEachOutput, visitEachOutput, visitEachState, visitEachState, visitEachTemp, visitEachTemp

Methods inherited from class java.lang.Object

clone, equals, getClass, notify, notifyAll, wait, wait, wait

Field Detail

TYPE

public static final LIRInstructionClass<StandardOp.SaveRegistersOp> TYPE

savedRegisters

protected final Register[] savedRegisters

The registers (potentially) saved by this operation.

slots

protected final AllocatableValue[] slots

The slots to which the registers are saved.

Constructor Detail

SaveRegistersOp

protected SaveRegistersOp(LIRInstructionClass<? extends StandardOp.SaveRegistersOp> c,
                          Register[] savedRegisters,
                          AllocatableValue[] savedRegisterLocations)

Parameters:

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

savedRegisterLocations - the slots to which the registers are saved

Method Detail

remove

public int remove(org.graalvm.collections.EconomicSet<Register> doNotSave)

Prunes doNotSave from the registers saved by this operation.

Parameters:

doNotSave - registers that should not be saved by this operation

Returns:

the number of registers pruned

getMap

public RegisterSaveLayout getMap(FrameMap frameMap)

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

Parameters:

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

getSavedRegisters

public Register[] getSavedRegisters()

getSaveableRegisters

public org.graalvm.collections.EconomicSet<Register> getSaveableRegisters()

getSlots

public AllocatableValue[] getSlots()

emitCode

public abstract void emitCode(CompilationResultBuilder crb)

Specified by:

emitCode in class LIRInstruction