llvm::ConstraintSystem Class Reference

#include "llvm/Analysis/ConstraintSystem.h"

Public Member Functions
	ConstraintSystem ()
	ConstraintSystem (ArrayRef< Value * > FunctionArgs)
	ConstraintSystem (const DenseMap< Value *, unsigned > &Value2Index)
bool	addVariableRow (ArrayRef< int64_t > R)
DenseMap< Value *, unsigned > &	getValue2Index ()
const DenseMap< Value *, unsigned > &	getValue2Index () const
bool	addVariableRowFill (ArrayRef< int64_t > R)
bool	mayHaveSolution ()
	Returns true if there may be a solution for the constraints in the system.
bool	isConditionImplied (SmallVector< int64_t, 8 > R) const
SmallVector< int64_t >	getLastConstraint () const
void	popLastConstraint ()
void	popLastNVariables (unsigned N)
unsigned	size () const
	Returns the number of rows in the constraint system.
void	dump () const
	Print the constraints in the system.

Static Public Member Functions
static SmallVector< int64_t, 8 >	negate (SmallVector< int64_t, 8 > R)
static SmallVector< int64_t, 8 >	negateOrEqual (SmallVector< int64_t, 8 > R)
	Multiplies each coefficient in the given vector by -1.
static SmallVector< int64_t, 8 >	toStrictLessThan (SmallVector< int64_t, 8 > R)
	Converts the given vector to form a strict less than inequality.

Detailed Description

Definition at line 22 of file ConstraintSystem.h.

Constructor & Destructor Documentation

ConstraintSystem() [1/3]

llvm::ConstraintSystem::ConstraintSystem ( )

inline

Definition at line 66 of file ConstraintSystem.h.

ConstraintSystem() [2/3]

llvm::ConstraintSystem::ConstraintSystem ( ArrayRef< Value * >  FunctionArgs )

inline

Definition at line 67 of file ConstraintSystem.h.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert(), llvm::ArrayRef< T >::size(), and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::size().

ConstraintSystem() [3/3]

llvm::ConstraintSystem::ConstraintSystem ( const DenseMap< Value *, unsigned > &  Value2Index )

inline

Definition at line 73 of file ConstraintSystem.h.

Member Function Documentation

addVariableRow()

bool llvm::ConstraintSystem::addVariableRow ( ArrayRef< int64_t >  R )

inline

Definition at line 76 of file ConstraintSystem.h.

References llvm::all_of(), assert(), llvm::CallingConv::C, llvm::SmallVectorImpl< T >::emplace_back(), llvm::SmallVectorBase< Size_T >::empty(), llvm::enumerate(), Idx, and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by addVariableRowFill().

addVariableRowFill()

bool llvm::ConstraintSystem::addVariableRowFill ( ArrayRef< int64_t >  R )

inline

Definition at line 100 of file ConstraintSystem.h.

References addVariableRow(), llvm::all_of(), and llvm::CallingConv::C.

Referenced by dumpConstraint().

dump()

void ConstraintSystem::dump

(

)

const

Print the constraints in the system.

Definition at line 156 of file ConstraintSystem.cpp.

References llvm::dbgs(), LLVM_DEBUG, and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by dumpConstraint(), and mayHaveSolution().

getLastConstraint()

SmallVector< int64_t > llvm::ConstraintSystem::getLastConstraint ( ) const

inline

Definition at line 148 of file ConstraintSystem.h.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::back(), and llvm::SmallVectorBase< Size_T >::empty().

getValue2Index() [1/2]

DenseMap< Value *, unsigned > & llvm::ConstraintSystem::getValue2Index ( )

inline

Definition at line 95 of file ConstraintSystem.h.

getValue2Index() [2/2]

const DenseMap< Value *, unsigned > & llvm::ConstraintSystem::getValue2Index ( ) const

inline

Definition at line 96 of file ConstraintSystem.h.

isConditionImplied()

bool ConstraintSystem::isConditionImplied

(

SmallVector< int64_t, 8 >

R

)

const

Definition at line 191 of file ConstraintSystem.cpp.

References llvm::all_of(), llvm::CallingConv::C, and negate().

mayHaveSolution()

bool ConstraintSystem::mayHaveSolution

(

)

Returns true if there may be a solution for the constraints in the system.

Definition at line 183 of file ConstraintSystem.cpp.

References llvm::dbgs(), dump(), and LLVM_DEBUG.

negate()

static SmallVector< int64_t, 8 > llvm::ConstraintSystem::negate ( SmallVector< int64_t, 8 >  R )

inlinestatic

Definition at line 113 of file ConstraintSystem.h.

References llvm::AddOverflow(), and negateOrEqual().

Referenced by isConditionImplied().

negateOrEqual()

static SmallVector< int64_t, 8 > llvm::ConstraintSystem::negateOrEqual ( SmallVector< int64_t, 8 >  R )

inlinestatic

Multiplies each coefficient in the given vector by -1.

Does not modify the original vector.

Parameters

R	The vector of coefficients to be negated.

Definition at line 126 of file ConstraintSystem.h.

References llvm::CallingConv::C, and llvm::MulOverflow().

Referenced by negate().

popLastConstraint()

void llvm::ConstraintSystem::popLastConstraint ( )

inline

Definition at line 156 of file ConstraintSystem.h.

References llvm::SmallVectorTemplateBase< T, bool >::pop_back().

popLastNVariables()

void llvm::ConstraintSystem::popLastNVariables ( unsigned  N )

inline

Definition at line 157 of file ConstraintSystem.h.

References assert(), and N.

size()

unsigned llvm::ConstraintSystem::size ( ) const

inline

Returns the number of rows in the constraint system.

Definition at line 163 of file ConstraintSystem.h.

References llvm::SmallVectorBase< Size_T >::size().

toStrictLessThan()

static SmallVector< int64_t, 8 > llvm::ConstraintSystem::toStrictLessThan ( SmallVector< int64_t, 8 >  R )

inlinestatic

Converts the given vector to form a strict less than inequality.

Does not modify the original vector.

Parameters

R	The vector of coefficients to be converted.

Definition at line 138 of file ConstraintSystem.h.

References llvm::SubOverflow().

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

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