org.graalvm.compiler.lir.aarch64

Class AArch64ZeroMemoryOp

java.lang.Object

org.graalvm.compiler.lir.LIRInstruction

org.graalvm.compiler.lir.aarch64.AArch64LIRInstruction

org.graalvm.compiler.lir.aarch64.AArch64ZeroMemoryOp

public final class AArch64ZeroMemoryOp
extends AArch64LIRInstruction

Zero a chunk of memory on AArch64.

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 Value	addressValue
protected Value	addressValueTemp
protected Value	lengthValue
protected Value	lengthValueTemp
static LIRInstructionClass<AArch64ZeroMemoryOp>	TYPE

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

ADDRESS_FLAGS, ALLOWED_FLAGS

Constructor Summary

Constructors

Constructor and Description
AArch64ZeroMemoryOp(Value address, Value length, boolean isAligned, boolean useDcZva, int zvaLength) Constructor of AArch64ZeroMemoryOp.

Method Summary

Modifier and Type	Method and Description
protected void	emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm)

Methods inherited from class org.graalvm.compiler.lir.aarch64.AArch64LIRInstruction

emitCode

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<AArch64ZeroMemoryOp> TYPE

addressValue

protected Value addressValue

lengthValue

protected Value lengthValue

addressValueTemp

protected Value addressValueTemp

lengthValueTemp

protected Value lengthValueTemp

Constructor Detail

AArch64ZeroMemoryOp

public AArch64ZeroMemoryOp(Value address,
                           Value length,
                           boolean isAligned,
                           boolean useDcZva,
                           int zvaLength)

Constructor of AArch64ZeroMemoryOp.

Parameters:

address - starting address of the memory chunk to be zeroed.

length - size of the memory chunk to be zeroed, in bytes.

isAligned - whether both address and size are aligned to 8 bytes.

useDcZva - is DC ZVA instruction is able to use.

zvaLength - the ZVA length info of current AArch64 CPU, negative value indicates length is unknown at compile time.

Method Detail

emitCode

protected void emitCode(CompilationResultBuilder crb,
                        AArch64MacroAssembler masm)

Specified by:

emitCode in class AArch64LIRInstruction