HandlerBlockLE (Jikes RVM API)

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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
extends BasicBlockLE

Extend BasicBlockLE for handler blocks

Field Summary
`(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
`HandlerBlockLE(int loc, InlineSequence position, TypeOperand eType, ArchitectureSpecificOpt.RegisterPool 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
`(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,
               ArchitectureSpecificOpt.RegisterPool 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)