llvm::LazyValueInfo Class Reference

#include <LazyValueInfo.h>

List of all members.

Public Types
enum	Tristate { Unknown = -1, False = 0, True = 1 }
	Tristate - This is used to return true/false/dunno results.
Public Member Functions
Tristate	getPredicateOnEdge (unsigned Pred, Value *V, Constant *C, BasicBlock *FromBB, BasicBlock *ToBB)
Constant *	getConstant (Value *V, BasicBlock *BB)
Constant *	getConstantOnEdge (Value *V, BasicBlock *FromBB, BasicBlock *ToBB)
virtual void	getAnalysisUsage (AnalysisUsage &AU) const
virtual void	releaseMemory ()
virtual bool	runOnFunction (Function &F)
Static Public Attributes
static char	ID

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Detailed Description

LazyValueInfo - This pass computes, caches, and vends lazy value constraint information.

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Member Function Documentation

Constant* llvm::LazyValueInfo::getConstant	(	Value *	V,
		BasicBlock *	BB
	)

getConstant - Determine whether the specified value is known to be a constant at the end of the specified block. Return null if not.

Constant* llvm::LazyValueInfo::getConstantOnEdge	(	Value *	V,
		BasicBlock *	FromBB,
		BasicBlock *	ToBB
	)

getConstantOnEdge - Determine whether the specified value is known to be a constant on the specified edge. Return null if not.

Tristate llvm::LazyValueInfo::getPredicateOnEdge	(	unsigned	Pred,
		Value *	V,
		Constant *	C,
		BasicBlock *	FromBB,
		BasicBlock *	ToBB
	)

getPredicateOnEdge - Determine whether the specified value comparison with a constant is known to be true or false on the specified CFG edge. Pred is a CmpInst predicate.

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

• LazyValueInfo.h