llvm::SCEVCouldNotCompute Struct Reference

An object of this class is returned by queries that could not be answered. More...

#include "llvm/Analysis/ScalarEvolution.h"

Inheritance diagram for llvm::SCEVCouldNotCompute:

Public Member Functions
LLVM_ABI	SCEVCouldNotCompute ()
Public Member Functions inherited from llvm::SCEV
	SCEV (const FoldingSetNodeIDRef ID, SCEVTypes SCEVTy, unsigned short ExpressionSize)
	SCEV (const SCEV &)=delete
SCEV &	operator= (const SCEV &)=delete
SCEVTypes	getSCEVType () const
LLVM_ABI Type *	getType () const
	Return the LLVM type of this SCEV expression.
LLVM_ABI ArrayRef< const SCEV * >	operands () const
	Return operands of this SCEV expression.
LLVM_ABI bool	isZero () const
	Return true if the expression is a constant zero.
LLVM_ABI bool	isOne () const
	Return true if the expression is a constant one.
LLVM_ABI bool	isAllOnesValue () const
	Return true if the expression is a constant all-ones value.
LLVM_ABI bool	isNonConstantNegative () const
	Return true if the specified scev is negated, but not a constant.
unsigned short	getExpressionSize () const
LLVM_ABI void	print (raw_ostream &OS) const
	Print out the internal representation of this scalar to the specified stream.
LLVM_ABI void	dump () const
	This method is used for debugging.
Public Member Functions inherited from llvm::FoldingSetBase::Node
	Node ()=default
void *	getNextInBucket () const
void	SetNextInBucket (void *N)

Static Public Member Functions
static LLVM_ABI bool	classof (const SCEV *S)
	Methods for support type inquiry through isa, cast, and dyn_cast:

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
const unsigned short	ExpressionSize
unsigned short	SubclassData = 0
	This field is initialized to zero and may be used in subclasses to store miscellaneous information.

Detailed Description

An object of this class is returned by queries that could not be answered.

For example, if you ask for the number of iterations of a linked-list traversal loop, you will get one of these. None of the standard SCEV operations are valid on this class, it is just a marker.

Definition at line 206 of file ScalarEvolution.h.

Constructor & Destructor Documentation

SCEVCouldNotCompute()

SCEVCouldNotCompute::SCEVCouldNotCompute

(

)

Definition at line 463 of file ScalarEvolution.cpp.

References llvm::scCouldNotCompute, and llvm::SCEV::SCEV().

Member Function Documentation

classof()

bool SCEVCouldNotCompute::classof ( const SCEV * S )

static

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

Definition at line 466 of file ScalarEvolution.cpp.

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

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

• include/llvm/Analysis/ScalarEvolution.h
• lib/Analysis/ScalarEvolution.cpp