LLVM  4.0.0
Public Member Functions | Static Public Member Functions | Friends | List of all members
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 <ScalarEvolutionExpressions.h>

Inheritance diagram for llvm::SCEVUnknown:
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Collaboration diagram for llvm::SCEVUnknown:
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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)
 
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::FoldingSetImpl::Node
 Node ()
 
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
 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 393 of file ScalarEvolutionExpressions.h.

Member Function Documentation

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

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

Definition at line 431 of file ScalarEvolutionExpressions.h.

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

Type* llvm::SCEVUnknown::getType ( ) const
inline
Value* llvm::SCEVUnknown::getValue ( ) const
inline
bool SCEVUnknown::isAlignOf ( Type *&  AllocTy) const

Definition at line 416 of file ScalarEvolution.cpp.

References getValue().

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

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

Definition at line 441 of file ScalarEvolution.cpp.

References getValue(), llvm::Type::isArrayTy(), and llvm::Type::isStructTy().

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

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 399 of file ScalarEvolution.cpp.

References getValue().

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

Friends And Related Function Documentation

friend class ScalarEvolution
friend

Definition at line 394 of file ScalarEvolutionExpressions.h.


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