org.graalvm.compiler.lir.aarch64

Class AArch64AtomicMove.CompareAndSwapOp

java.lang.Object

org.graalvm.compiler.lir.LIRInstruction

org.graalvm.compiler.lir.aarch64.AArch64LIRInstruction

org.graalvm.compiler.lir.aarch64.AArch64AtomicMove.CompareAndSwapOp

Enclosing class:

AArch64AtomicMove

public static class AArch64AtomicMove.CompareAndSwapOp
extends AArch64LIRInstruction

Compare and swap instruction. Does the following atomically:

  CAS(newVal, expected, address):
    oldVal = *address
    if oldVal == expected:
        *address = newVal
    return oldVal
 

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 AllocatableValue	addressValue
protected Value	expectedValue
protected AllocatableValue	newValue
protected AllocatableValue	resultValue
static LIRInstructionClass<AArch64AtomicMove.CompareAndSwapOp>	TYPE

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

ADDRESS_FLAGS, ALLOWED_FLAGS

Constructor Summary

Constructors

Constructor and Description
CompareAndSwapOp(AArch64Kind accessKind, MemoryOrderMode memoryOrder, boolean setConditionFlags, AllocatableValue result, Value expectedValue, AllocatableValue newValue, AllocatableValue addressValue)

Method Summary

Modifier and Type	Method and Description
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<AArch64AtomicMove.CompareAndSwapOp> TYPE

resultValue

protected AllocatableValue resultValue

expectedValue

protected Value expectedValue

newValue

protected AllocatableValue newValue

addressValue

protected AllocatableValue addressValue

Constructor Detail

CompareAndSwapOp

public CompareAndSwapOp(AArch64Kind accessKind,
                        MemoryOrderMode memoryOrder,
                        boolean setConditionFlags,
                        AllocatableValue result,
                        Value expectedValue,
                        AllocatableValue newValue,
                        AllocatableValue addressValue)

Method Detail

emitCode

public void emitCode(CompilationResultBuilder crb,
                     AArch64MacroAssembler masm)

Specified by:

emitCode in class AArch64LIRInstruction