org.graalvm.compiler.lir.amd64

Class AMD64CalcStringAttributesOp

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.AMD64CalcStringAttributesOp

public final class AMD64CalcStringAttributesOp
extends AMD64ComplexVectorOp

This intrinsic calculates the code range and codepoint length of strings in various encodings. The code range of a string is a flag that coarsely describes upper and lower bounds of all codepoints contained in a string, or indicates whether a string was encoded correctly.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AMD64CalcStringAttributesOp.Op

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 int	CR_16BIT All codepoints are BMP (0x0000 - 0xffff, no UTF-16 surrogates).
static int	CR_7BIT All codepoints are ASCII (0x00 - 0x7f).
static int	CR_8BIT All codepoints are LATIN-1 (0x00 - 0xff).
static int	CR_BROKEN_FIXED_WIDTH The string is not encoded correctly in the given fixed-width encoding.
static int	CR_BROKEN_MULTIBYTE The string is not encoded correctly in the given multi-byte/variable-width encoding.
static int	CR_VALID_FIXED_WIDTH The string is encoded correctly in the given fixed-width encoding.
static int	CR_VALID_MULTIBYTE The string is encoded correctly in the given multi-byte/variable-width encoding.
static LIRInstructionClass<AMD64CalcStringAttributesOp>	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
void	emitCode(CompilationResultBuilder crb, AMD64MacroAssembler asm)
static AMD64CalcStringAttributesOp	movParamsAndCreate(LIRGeneratorTool tool, AMD64CalcStringAttributesOp.Op op, Value array, Value byteOffset, Value length, Value result, boolean assumeValid) Calculates the code range and codepoint length of strings in various encodings.

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<AMD64CalcStringAttributesOp> TYPE

CR_7BIT

public static final int CR_7BIT

All codepoints are ASCII (0x00 - 0x7f).

See Also:

Constant Field Values

CR_8BIT

public static final int CR_8BIT

All codepoints are LATIN-1 (0x00 - 0xff).

See Also:

Constant Field Values

CR_16BIT

public static final int CR_16BIT

All codepoints are BMP (0x0000 - 0xffff, no UTF-16 surrogates).

See Also:

Constant Field Values

CR_VALID_FIXED_WIDTH

public static final int CR_VALID_FIXED_WIDTH

The string is encoded correctly in the given fixed-width encoding.

See Also:

Constant Field Values

CR_BROKEN_FIXED_WIDTH

public static final int CR_BROKEN_FIXED_WIDTH

The string is not encoded correctly in the given fixed-width encoding.

See Also:

Constant Field Values

CR_VALID_MULTIBYTE

public static final int CR_VALID_MULTIBYTE

The string is encoded correctly in the given multi-byte/variable-width encoding.

See Also:

Constant Field Values

CR_BROKEN_MULTIBYTE

public static final int CR_BROKEN_MULTIBYTE

The string is not encoded correctly in the given multi-byte/variable-width encoding.

See Also:

Constant Field Values

Method Detail

movParamsAndCreate

public static AMD64CalcStringAttributesOp movParamsAndCreate(LIRGeneratorTool tool,
                                                             AMD64CalcStringAttributesOp.Op op,
                                                             Value array,
                                                             Value byteOffset,
                                                             Value length,
                                                             Value result,
                                                             boolean assumeValid)

Calculates the code range and codepoint length of strings in various encodings.

Parameters:

op - operation to run.

array - arbitrary array.

byteOffset - byteOffset to start from. Must include array base byteOffset!

length - length of the array region to consider, scaled to AMD64CalcStringAttributesOp.Op.stride.

assumeValid - assume that the string is encoded correctly.

emitCode

public void emitCode(CompilationResultBuilder crb,
                     AMD64MacroAssembler asm)

Specified by:

emitCode in class AMD64LIRInstruction