org.graalvm.compiler.lir.aarch64

Class AArch64ControlFlow.HashTableSwitchOp

java.lang.Object

org.graalvm.compiler.lir.LIRInstruction

org.graalvm.compiler.lir.aarch64.AArch64BlockEndOp

org.graalvm.compiler.lir.aarch64.AArch64ControlFlow.HashTableSwitchOp

All Implemented Interfaces:

StandardOp.BlockEndOp

Enclosing class:

AArch64ControlFlow

public static final class AArch64ControlFlow.HashTableSwitchOp
extends AArch64BlockEndOp

This operation jumps to the appropriate destination as specified within a JumpTable, or to the default condition if there is no match within the JumpTable.

The JumpTable is indexed via hash and the actions taken dependent on whether a defaultTarget is provided:

If a defaultTarget is provided, then the JumpTable uses the VALUE_AND_OFFSET format and originalValue must be checked against the value within the JumpTable. If the values match, then corresponding target (JumpTableStart + JumpTable[hash].OFFSET) is jumped to; otherwise, the code jumps to the default target.

If a defaultTarget is not provided, then the JumpTable uses the OFFSET_ONLY format and JumpTableStart + JumpTable[hash] can be immediately jumped to.

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	hash
protected AllocatableValue	originalValue
static LIRInstructionClass<AArch64ControlFlow.HashTableSwitchOp>	TYPE

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

ADDRESS_FLAGS, ALLOWED_FLAGS

Constructor Summary

Constructors

Constructor and Description
HashTableSwitchOp(JavaConstant[] keys, LabelRef defaultTarget, LabelRef[] targets, AllocatableValue originalValue, AllocatableValue hash)

Method Summary

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

Methods inherited from class org.graalvm.compiler.lir.aarch64.AArch64BlockEndOp

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<AArch64ControlFlow.HashTableSwitchOp> TYPE

originalValue

protected AllocatableValue originalValue

hash

protected AllocatableValue hash

Constructor Detail

HashTableSwitchOp

public HashTableSwitchOp(JavaConstant[] keys,
                         LabelRef defaultTarget,
                         LabelRef[] targets,
                         AllocatableValue originalValue,
                         AllocatableValue hash)

Method Detail

emitCode

public void emitCode(CompilationResultBuilder crb,
                     AArch64MacroAssembler masm)

Specified by:

emitCode in class AArch64BlockEndOp