IREnumeration (Jikes RVM API)

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org.jikesrvm.compilers.opt.ir
Class IREnumeration

java.lang.Object
  org.jikesrvm.compilers.opt.ir.IREnumeration

public abstract class IREnumeration
extends Object
extends Object

This class is not meant to be instantiated. It simply serves as a place to collect the implementation of primitive IR enumerations. None of these functions are meant to be called directly from anywhere except IR, Instruction, and BasicBlock. General clients should use the higher level interfaces provided by those classes

Nested Class Summary
`static class`	`IREnumeration.AllDefsEnum` This class implements an `OperandEnumeration`.
`static class`	`IREnumeration.AllInstructionsEnum` This class implements an `InstructionEnumeration` over all instructions for a basic block.
`static class`	`IREnumeration.AllUsesEnum` This class implements an `OperandEnumeration`.

Constructor Summary
`IREnumeration()`

Method Summary
`private static void`	`fail(String msg)`
`static BasicBlockEnumeration`	`forwardBE(IR ir)` A forward enumeration of all the basic blocks in the IR.
`static InstructionEnumeration`	`forwardGlobalIE(IR ir)` A forward enumeration of all the instructions in the IR.
`static InstructionEnumeration`	`forwardIntraBlockIE(Instruction start, Instruction end)` Forward intra basic block instruction enumerations from from start...last inclusive.
`static BasicBlockEnumeration`	`reverseBE(IR ir)` A reverse enumeration of all the basic blocks in the IR.
`static InstructionEnumeration`	`reverseGlobalIE(IR ir)` A reverse enumeration of all the instructions in the IR.
`static InstructionEnumeration`	`reverseIntraBlockIE(Instruction start, Instruction end)` Reverse intra basic block instruction enumerations from from start...last inclusive.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

IREnumeration

public IREnumeration()

Method Detail

forwardIntraBlockIE

public static InstructionEnumeration forwardIntraBlockIE(Instruction start,
                                                         Instruction end)

Forward intra basic block instruction enumerations from from start...last inclusive. NB: start and last _must_ be in the same basic block and must be in the proper relative order. This code does _not_ check this invariant, and will simply fail by eventually thowing a NoSuchElementException if it is not met. Caller's must be sure the invariants are met.

Parameters:: start - the instruction to start with; end - the instruction to end with
Returns:: an enumeration of the instructions from start to end

reverseIntraBlockIE

public static InstructionEnumeration reverseIntraBlockIE(Instruction start,
                                                         Instruction end)

Reverse intra basic block instruction enumerations from from start...last inclusive. NB: start and last _must_ be in the same basic block and must be in the proper relative order. This code does _not_ check this invariant, and will simply fail by eventually thowing a NoSuchElementException if it is not met. Caller's must be sure the invariants are met.

Parameters:: start - the instruction to start with; end - the instruction to end with
Returns:: an enumeration of the instructions from start to end

forwardGlobalIE

public static InstructionEnumeration forwardGlobalIE(IR ir)

A forward enumeration of all the instructions in the IR.

Parameters:: ir - the IR to walk over
Returns:: a forward enumeration of the insturctions in ir

reverseGlobalIE

public static InstructionEnumeration reverseGlobalIE(IR ir)

A reverse enumeration of all the instructions in the IR.

Parameters:: ir - the IR to walk over
Returns:: a forward enumeration of the insturctions in ir

forwardBE

public static BasicBlockEnumeration forwardBE(IR ir)

A forward enumeration of all the basic blocks in the IR.

Parameters:: ir - the IR to walk over
Returns:: a forward enumeration of the basic blocks in ir

reverseBE

public static BasicBlockEnumeration reverseBE(IR ir)

A reverse enumeration of all the basic blocks in the IR.

Parameters:: ir - the IR to walk over
Returns:: a reverse enumeration of the basic blocks in ir

fail

private static void fail(String msg)
                  throws NoSuchElementException

Throws:: NoSuchElementException