llvm::SwitchInst Class Reference

#include <Instructions.h>

Inheritance diagram for llvm::SwitchInst:

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Collaboration diagram for llvm::SwitchInst:

[legend]

List of all members.

Public Member Functions
	~SwitchInst ()
	DECLARE_TRANSPARENT_OPERAND_ACCESSORS (Value)
	Provide fast operand accessors.
Value *	getCondition () const
void	setCondition (Value *V)
BasicBlock *	getDefaultDest () const
unsigned	getNumCases () const
ConstantInt *	getCaseValue (unsigned i)
const ConstantInt *	getCaseValue (unsigned i) const
unsigned	findCaseValue (const ConstantInt *C) const
ConstantInt *	findCaseDest (BasicBlock *BB)
void	addCase (ConstantInt *OnVal, BasicBlock *Dest)
void	removeCase (unsigned idx)
virtual SwitchInst *	clone () const
unsigned	getNumSuccessors () const
BasicBlock *	getSuccessor (unsigned idx) const
void	setSuccessor (unsigned idx, BasicBlock *NewSucc)
ConstantInt *	getSuccessorValue (unsigned idx) const
Static Public Member Functions
static SwitchInst *	Create (Value *Value, BasicBlock *Default, unsigned NumCases, Instruction *InsertBefore=0)
static SwitchInst *	Create (Value *Value, BasicBlock *Default, unsigned NumCases, BasicBlock *InsertAtEnd)
static bool	classof (const SwitchInst *)
static bool	classof (const Instruction *I)
	Methods for support type inquiry through isa, cast, and dyn_cast:.
static bool	classof (const Value *V)

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Detailed Description

SwitchInst - Multiway switch

Definition at line 2227 of file Instructions.h.

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Constructor & Destructor Documentation

SwitchInst::~SwitchInst

(

)

Definition at line 2766 of file Instructions.cpp.

References llvm::User::dropHungoffUses().

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Member Function Documentation

static SwitchInst* llvm::SwitchInst::Create	(	Value *	Value,
		BasicBlock *	Default,
		unsigned	NumCases,
		Instruction *	InsertBefore = 0
	)			[inline, static]

Definition at line 2255 of file Instructions.h.

Referenced by llvm::IRBuilder< preserveNames, T >::CreateSwitch(), and llvm::SimplifyCFG().

static SwitchInst* llvm::SwitchInst::Create	(	Value *	Value,
		BasicBlock *	Default,
		unsigned	NumCases,
		BasicBlock *	InsertAtEnd
	)			[inline, static]

Definition at line 2259 of file Instructions.h.

llvm::SwitchInst::DECLARE_TRANSPARENT_OPERAND_ACCESSORS

(

Value

)

Provide fast operand accessors.

Value* llvm::SwitchInst::getCondition

(

)

const [inline]

Definition at line 2269 of file Instructions.h.

Referenced by AddReachableCodeToWorklist().

void llvm::SwitchInst::setCondition

(

Value *

V

)

[inline]

Definition at line 2270 of file Instructions.h.

BasicBlock* llvm::SwitchInst::getDefaultDest

(

)

const [inline]

Definition at line 2272 of file Instructions.h.

Referenced by llvm::Interpreter::visitSwitchInst().

unsigned llvm::SwitchInst::getNumCases

(

)

const [inline]

getNumCases - return the number of 'cases' in this switch instruction. Note that case #0 is always the default case.

Definition at line 2278 of file Instructions.h.

Referenced by SimplifyEqualityComparisonWithOnlyPredecessor().

ConstantInt* llvm::SwitchInst::getCaseValue

(

unsigned

i

)

[inline]

getCaseValue - Return the specified case value. Note that case #0, the default destination, does not have a case value.

Definition at line 2284 of file Instructions.h.

Referenced by AddReachableCodeToWorklist(), and SimplifyEqualityComparisonWithOnlyPredecessor().

const ConstantInt* llvm::SwitchInst::getCaseValue

(

unsigned

i

)

const [inline]

getCaseValue - Return the specified case value. Note that case #0, the default destination, does not have a case value.

Definition at line 2291 of file Instructions.h.

unsigned llvm::SwitchInst::findCaseValue

(

const ConstantInt *

C

)

const [inline]

findCaseValue - Search all of the case values for the specified constant. If it is explicitly handled, return the case number of it, otherwise return 0 to indicate that it is handled by the default handler.

Definition at line 2299 of file Instructions.h.

ConstantInt* llvm::SwitchInst::findCaseDest

(

BasicBlock *

BB

)

[inline]

findCaseDest - Finds the unique case value for a given successor. Returns null if the successor is not found, not unique, or is the default case.

Definition at line 2308 of file Instructions.h.

void SwitchInst::addCase	(	ConstantInt *	OnVal,
		BasicBlock *	Dest
	)

addCase - Add an entry to the switch instruction...

Definition at line 2773 of file Instructions.cpp.

References llvm::User::NumOperands.

Referenced by FoldValueComparisonIntoPredecessors(), and llvm::SimplifyCFG().

void SwitchInst::removeCase

(

unsigned

idx

)

removeCase - This method removes the specified successor from the switch instruction. Note that this cannot be used to remove the default destination (successor #0).

removeCase - This method removes the specified successor from the switch instruction. Note that this cannot be used to remove the default destination (successor #0).

Definition at line 2788 of file Instructions.cpp.

References llvm::User::getNumOperands(), llvm::User::NumOperands, and llvm::Use::set().

Referenced by SimplifyEqualityComparisonWithOnlyPredecessor().

SwitchInst * SwitchInst::clone

(

)

const [virtual]

clone() - Create a copy of 'this' instruction that is identical in all ways except the following: The instruction has no parent The instruction has no name

Implements llvm::TerminatorInst.

Definition at line 2926 of file Instructions.cpp.

unsigned llvm::SwitchInst::getNumSuccessors

(

)

const [inline]

getNumSuccessors - Return the number of successors that this terminator has.

Reimplemented from llvm::TerminatorInst.

Definition at line 2333 of file Instructions.h.

Referenced by AddReachableCodeToWorklist(), and FoldValueComparisonIntoPredecessors().

BasicBlock* llvm::SwitchInst::getSuccessor

(

unsigned

idx

)

const [inline]

getSuccessor - Return the specified successor.

Reimplemented from llvm::TerminatorInst.

Definition at line 2334 of file Instructions.h.

Referenced by AddReachableCodeToWorklist(), FoldValueComparisonIntoPredecessors(), and SimplifyEqualityComparisonWithOnlyPredecessor().

void llvm::SwitchInst::setSuccessor	(	unsigned	idx,
		BasicBlock *	B
	)			[inline]

setSuccessor - Update the specified successor to point at the provided block.

Reimplemented from llvm::TerminatorInst.

Definition at line 2338 of file Instructions.h.

Referenced by FoldValueComparisonIntoPredecessors().

ConstantInt* llvm::SwitchInst::getSuccessorValue

(

unsigned

idx

)

const [inline]

Definition at line 2345 of file Instructions.h.

static bool llvm::SwitchInst::classof

(

const SwitchInst *

)

[inline, static]

Definition at line 2351 of file Instructions.h.

static bool llvm::SwitchInst::classof

(

const Instruction *

)

[inline, static]

Methods for support type inquiry through isa, cast, and dyn_cast:.

Reimplemented from llvm::TerminatorInst.

Definition at line 2352 of file Instructions.h.

References llvm::Instruction::getOpcode().

static bool llvm::SwitchInst::classof

(

const Value *

V

)

[inline, static]

Reimplemented from llvm::TerminatorInst.

Definition at line 2355 of file Instructions.h.

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The documentation for this class was generated from the following files:

• Instructions.h
• Instructions.cpp