org.jruby.ir.instructions

Class CopyInstr

java.lang.Object

org.jruby.ir.instructions.Instr

org.jruby.ir.instructions.ResultBaseInstr

org.jruby.ir.instructions.CopyInstr

All Implemented Interfaces:

FixedArityInstr, ResultInstr

public class CopyInstr
extends ResultBaseInstr
implements FixedArityInstr

Field Summary

Fields inherited from class org.jruby.ir.instructions.ResultBaseInstr

result

Fields inherited from class org.jruby.ir.instructions.Instr

EMPTY_OPERANDS, operands

Constructor Summary

Constructors

Constructor and Description
CopyInstr(Operation op, Variable result, Operand source)
CopyInstr(Variable result, Operand source)

Method Summary

Methods

Modifier and Type	Method and Description
Instr	clone(CloneInfo ii) Clone the instruction for use in an inlining context (either when a scope is inlined into another scope, or when a block has to be cloned because its associated call belongs to an inlined scope).
static CopyInstr	decode(IRReaderDecoder d)
void	encode(IRWriterEncoder e)
Operand	getSource()
Operand	simplifyAndGetResult(IRScope scope, Map<Operand,Operand> valueMap) This method takes as input a map of operands to their values, and outputs the result of this instruction.
void	visit(IRVisitor visitor)

Methods inherited from class org.jruby.ir.instructions.ResultBaseInstr

getResult, updateResult

Methods inherited from class org.jruby.ir.instructions.Instr

canBeDeleted, canRaiseException, cloneOperands, computeScopeFlags, getIPC, getOperands, getOperation, getRPC, getUsedVariables, hasSideEffects, interpret, interpretAndGetNewIPC, isDead, markDead, renameVars, setIPC, setRPC, simplifyOperands, toString, toStringNonOperandArgs, transfersControl

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

CopyInstr

public CopyInstr(Operation op,
         Variable result,
         Operand source)

CopyInstr

public CopyInstr(Variable result,
         Operand source)

Method Detail

getSource

public Operand getSource()

simplifyAndGetResult

public Operand simplifyAndGetResult(IRScope scope,
                           Map<Operand,Operand> valueMap)

Description copied from class: Instr

This method takes as input a map of operands to their values, and outputs the result of this instruction. If the value map provides a value for any of the instruction's operands the expectation is that the operand will be replaced with the simplified value. It is not required that it do so -- code correctness is not compromised by failure to simplify.

Overrides:

simplifyAndGetResult in class Instr

Parameters:

scope - where this instr exists

valueMap - Mapping from operands to their simplified values

Returns:

simplified result / output of this instruction

clone

public Instr clone(CloneInfo ii)

Description copied from class: Instr

Clone the instruction for use in an inlining context (either when a scope is inlined into another scope, or when a block has to be cloned because its associated call belongs to an inlined scope). This might renaming variables and labels to eliminate naming conflicts. The implementation might vary on the cloning mode.

Specified by:

clone in class Instr

Parameters:

ii - This object manages renaming of variables and labels, handles args and return values.

Returns:

a new instruction that can be used in the target scope.

decode

public static CopyInstr decode(IRReaderDecoder d)

encode

public void encode(IRWriterEncoder e)

Overrides:

encode in class ResultBaseInstr

visit

public void visit(IRVisitor visitor)

Overrides:

visit in class Instr