org.jikesrvm.compilers.opt.bc2ir

Class HandlerBlockLE

java.lang.Object

org.jikesrvm.compilers.opt.bc2ir.BasicBlockLE

org.jikesrvm.compilers.opt.bc2ir.HandlerBlockLE

final class HandlerBlockLE
extends BasicBlockLE

Extend BasicBlockLE for handler blocks

Field Summary

Fields

Modifier and Type	Field and Description
(package private) ExceptionHandlerBasicBlock	entryBlock The synthetic entry basic block for this handler.
(package private) RegisterOperand	exceptionObject The RegisterOperand that code should use to access the caught exception object

Fields inherited from class org.jikesrvm.compilers.opt.bc2ir.BasicBlockLE

block, fallThrough, handlers, high, left, localState, low, max, parent, right, stackState

Constructor Summary

Constructors

Constructor and Description
HandlerBlockLE(int loc, InlineSequence position, TypeOperand eType, GenericRegisterPool temps, int exprStackSize, ControlFlowGraph cfg) Create a new exception handler BBLE (and exception handler basic block) for the specified bytecode index and exception type.

Method Summary

Modifier and Type	Method and Description
(package private) void	addCaughtException(TypeOperand et)
(package private) byte	mayCatchException(TypeReference et)
(package private) byte	mustCatchException(TypeReference et)

Methods inherited from class org.jikesrvm.compilers.opt.bc2ir.BasicBlockLE

addHandler, clearGenerated, clearInCodeOrder, clearLocalKnown, clearSelfRegen, clearStackKnown, copyIntoLocalState, copyLocalState, genState, isBlack, isGenerated, isInCodeOrder, isLocalKnown, isReadyToGenerate, isRed, isSelfRegen, isStackKnown, setBlack, setGenerated, setInCodeOrder, setLocalKnown, setRed, setSelfRegen, setStackKnown, toString

Methods inherited from class java.lang.Object

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

Field Detail

exceptionObject

final RegisterOperand exceptionObject

The RegisterOperand that code should use to access the caught exception object

entryBlock

final ExceptionHandlerBasicBlock entryBlock

The synthetic entry basic block for this handler. It contains the instruction sequence to get the caught exception object into a "normal" register operand (exceptionObject);

Constructor Detail

HandlerBlockLE

HandlerBlockLE(int loc,
               InlineSequence position,
               TypeOperand eType,
               GenericRegisterPool temps,
               int exprStackSize,
               ControlFlowGraph cfg)

Create a new exception handler BBLE (and exception handler basic block) for the specified bytecode index and exception type.

Parameters:

loc - bytecode index

position - inline sequence

eType - exception type

temps - the register pool to allocate exceptionObject from

exprStackSize - max size of expression stack

cfg - ControlFlowGraph into which the block will eventually be inserted

Method Detail

addCaughtException

void addCaughtException(TypeOperand et)

mayCatchException

byte mayCatchException(TypeReference et)

mustCatchException

byte mustCatchException(TypeReference et)