org.graalvm.compiler.lir.amd64

Class AMD64ArrayEqualsOp

java.lang.Object

org.graalvm.compiler.lir.LIRInstruction

org.graalvm.compiler.lir.amd64.AMD64LIRInstruction

org.graalvm.compiler.lir.amd64.AMD64ComplexVectorOp

org.graalvm.compiler.lir.amd64.AMD64ArrayEqualsOp

public final class AMD64ArrayEqualsOp
extends AMD64ComplexVectorOp

Emits code which compares two arrays of the same length. If the CPU supports any vector instructions specialized code is emitted to leverage these instructions. This op can also compare arrays of different integer types (e.g. byte[] and char[]) with on-the-fly sign- or zero-extension.

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
static LIRInstructionClass<AMD64ArrayEqualsOp>	TYPE

Fields inherited from class org.graalvm.compiler.lir.amd64.AMD64ComplexVectorOp

targetDescription, vectorSize

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

ADDRESS_FLAGS, ALLOWED_FLAGS

Method Summary

Modifier and Type	Method and Description
static boolean	canGenerateConstantLengthCompare(TargetDescription target, JavaKind kindA, JavaKind kindB, int constantLength, AVXKind.AVXSize vectorSize)
void	emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm)
static AMD64Address.Scale	max(AMD64Address.Scale a, AMD64Address.Scale b)
static AMD64ArrayEqualsOp	movParamsAndCreate(LIRGeneratorTool tool, int baseOffsetA, int baseOffsetB, int baseOffsetMask, Value result, Value arrayA, Value offsetA, Value arrayB, Value offsetB, Value mask, Value length, Value dynamicStrides, AMD64MacroAssembler.ExtendMode extendMode)
static AMD64ArrayEqualsOp	movParamsAndCreate(LIRGeneratorTool tool, JavaKind strideA, JavaKind strideB, JavaKind strideMask, int baseOffsetA, int baseOffsetB, int baseOffsetMask, Value result, Value arrayA, Value offsetA, Value arrayB, Value offsetB, Value mask, Value length, AMD64MacroAssembler.ExtendMode extendMode)
static AMD64ArrayEqualsOp	movParamsAndCreate(LIRGeneratorTool tool, JavaKind strideA, JavaKind strideB, JavaKind strideMask, int baseOffsetA, int baseOffsetB, int baseOffsetMask, Value result, Value arrayA, Value offsetA, Value arrayB, Value offsetB, Value arrayMask, Value length, Value dynamicStrides, AMD64MacroAssembler.ExtendMode extendMode) Compares array regions of length length in arrayA and arrayB, starting at byte offset offsetA and offsetB, respectively.

Methods inherited from class org.graalvm.compiler.lir.amd64.AMD64ComplexVectorOp

getVectorKind, needsClearUpperVectorRegisters, supports, supportsAVX2AndYMM, supportsAVX512VLBW, supportsAVX512VLBWAndZMM, supportsBMI2

Methods inherited from class org.graalvm.compiler.lir.amd64.AMD64LIRInstruction

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, 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<AMD64ArrayEqualsOp> TYPE

Method Detail

movParamsAndCreate

public static AMD64ArrayEqualsOp movParamsAndCreate(LIRGeneratorTool tool,
                                                    int baseOffsetA,
                                                    int baseOffsetB,
                                                    int baseOffsetMask,
                                                    Value result,
                                                    Value arrayA,
                                                    Value offsetA,
                                                    Value arrayB,
                                                    Value offsetB,
                                                    Value mask,
                                                    Value length,
                                                    Value dynamicStrides,
                                                    AMD64MacroAssembler.ExtendMode extendMode)

movParamsAndCreate

public static AMD64ArrayEqualsOp movParamsAndCreate(LIRGeneratorTool tool,
                                                    JavaKind strideA,
                                                    JavaKind strideB,
                                                    JavaKind strideMask,
                                                    int baseOffsetA,
                                                    int baseOffsetB,
                                                    int baseOffsetMask,
                                                    Value result,
                                                    Value arrayA,
                                                    Value offsetA,
                                                    Value arrayB,
                                                    Value offsetB,
                                                    Value mask,
                                                    Value length,
                                                    AMD64MacroAssembler.ExtendMode extendMode)

movParamsAndCreate

public static AMD64ArrayEqualsOp movParamsAndCreate(LIRGeneratorTool tool,
                                                    JavaKind strideA,
                                                    JavaKind strideB,
                                                    JavaKind strideMask,
                                                    int baseOffsetA,
                                                    int baseOffsetB,
                                                    int baseOffsetMask,
                                                    Value result,
                                                    Value arrayA,
                                                    Value offsetA,
                                                    Value arrayB,
                                                    Value offsetB,
                                                    Value arrayMask,
                                                    Value length,
                                                    Value dynamicStrides,
                                                    AMD64MacroAssembler.ExtendMode extendMode)

Compares array regions of length length in arrayA and arrayB, starting at byte offset offsetA and offsetB, respectively. If arrayMask is not null, it is OR-ed with arrayA before comparison with arrayB.

Parameters:

strideA - element size of arrayA. May be null if dynamicStrides is used.

strideB - element size of arrayB. May be null if dynamicStrides is used.

strideMask - element size of mask. May be null if dynamicStrides is used.

offsetA - byte offset to be added to arrayA.

offsetB - byte offset to be added to arrayB.

length - length (number of array slots in respective array's stride) of the region to compare.

dynamicStrides - dynamic stride dispatch as described in StrideUtil.

extendMode - integer extension mode for the array with the smaller element size.

canGenerateConstantLengthCompare

public static boolean canGenerateConstantLengthCompare(TargetDescription target,
                                                       JavaKind kindA,
                                                       JavaKind kindB,
                                                       int constantLength,
                                                       AVXKind.AVXSize vectorSize)

emitCode

public void emitCode(CompilationResultBuilder crb,
                     AMD64MacroAssembler masm)

Specified by:

emitCode in class AMD64LIRInstruction

max

public static AMD64Address.Scale max(AMD64Address.Scale a,
                                     AMD64Address.Scale b)