LLVM  6.0.0svn
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llvm::SCEVUnknown Class Referencefinal

This means that we are dealing with an entirely unknown SCEV value, and only represent it as its LLVM Value. More...

#include "llvm/Analysis/ScalarEvolutionExpressions.h"

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Public Member Functions

ValuegetValue () const
 
TypegetType () const
 
bool isSizeOf (Type *&AllocTy) const
 
bool isAlignOf (Type *&AllocTy) const
 
bool isOffsetOf (Type *&STy, Constant *&FieldNo) const
 
- Public Member Functions inherited from llvm::SCEV
 SCEV (const FoldingSetNodeIDRef ID, unsigned SCEVTy)
 
 SCEV (const SCEV &)=delete
 
SCEVoperator= (const SCEV &)=delete
 
unsigned getSCEVType () const
 
TypegetType () const
 Return the LLVM type of this SCEV expression. More...
 
bool isZero () const
 Return true if the expression is a constant zero. More...
 
bool isOne () const
 Return true if the expression is a constant one. More...
 
bool isAllOnesValue () const
 Return true if the expression is a constant all-ones value. More...
 
bool isNonConstantNegative () const
 Return true if the specified scev is negated, but not a constant. More...
 
void print (raw_ostream &OS) const
 Print out the internal representation of this scalar to the specified stream. More...
 
void dump () const
 This method is used for debugging. More...
 
- Public Member Functions inherited from llvm::FoldingSetBase::Node
 Node ()=default
 
void * getNextInBucket () const
 
void SetNextInBucket (void *N)
 

Static Public Member Functions

static bool classof (const SCEV *S)
 Methods for support type inquiry through isa, cast, and dyn_cast: More...
 

Friends

class ScalarEvolution
 

Additional Inherited Members

- Public Types inherited from llvm::SCEV
enum  NoWrapFlags {
  FlagAnyWrap = 0, FlagNW = (1 << 0), FlagNUW = (1 << 1), FlagNSW = (1 << 2),
  NoWrapMask = (1 << 3) - 1
}
 NoWrapFlags are bitfield indices into SubclassData. More...
 
- Protected Attributes inherited from llvm::SCEV
unsigned short SubclassData = 0
 This field is initialized to zero and may be used in subclasses to store miscellaneous information. More...
 

Detailed Description

This means that we are dealing with an entirely unknown SCEV value, and only represent it as its LLVM Value.

This is the "bottom" value for the analysis.

Definition at line 402 of file ScalarEvolutionExpressions.h.

Member Function Documentation

◆ classof()

static bool llvm::SCEVUnknown::classof ( const SCEV S)
inlinestatic

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

Definition at line 440 of file ScalarEvolutionExpressions.h.

References llvm::SCEV::getSCEVType(), and llvm::scUnknown.

◆ getType()

Type* llvm::SCEVUnknown::getType ( ) const
inline

Definition at line 437 of file ScalarEvolutionExpressions.h.

Referenced by isSimpleCastedPHI().

◆ getValue()

Value* llvm::SCEVUnknown::getValue ( ) const
inline

◆ isAlignOf()

bool SCEVUnknown::isAlignOf ( Type *&  AllocTy) const

Definition at line 481 of file ScalarEvolution.cpp.

References llvm::SCEVCastExpr::Ty.

Referenced by llvm::SCEV::print().

◆ isOffsetOf()

bool SCEVUnknown::isOffsetOf ( Type *&  STy,
Constant *&  FieldNo 
) const

◆ isSizeOf()

bool SCEVUnknown::isSizeOf ( Type *&  AllocTy) const

Test whether this is a special constant representing a type size, alignment, or field offset in a target-independent manner, and hasn't happened to have been folded with other operations into something unrecognizable. This is mainly only useful for pretty-printing and other situations where it isn't absolutely required for these to succeed.

Definition at line 464 of file ScalarEvolution.cpp.

Referenced by llvm::SCEV::print().

Friends And Related Function Documentation

◆ ScalarEvolution

friend class ScalarEvolution
friend

Definition at line 403 of file ScalarEvolutionExpressions.h.


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