llvm::IntEqClasses Class Reference

#include <IntEqClasses.h>

Public Member Functions
	IntEqClasses (unsigned N=0)
	IntEqClasses - Create an equivalence class mapping for 0 .. N-1. More...
void	grow (unsigned N)
void	clear ()
void	join (unsigned a, unsigned b)
unsigned	findLeader (unsigned a) const
void	compress ()
unsigned	getNumClasses () const
unsigned	operator[] (unsigned a) const
void	uncompress ()

Detailed Description

Definition at line 28 of file IntEqClasses.h.

Constructor & Destructor Documentation

llvm::IntEqClasses::IntEqClasses ( unsigned  N = 0 )

inline

IntEqClasses - Create an equivalence class mapping for 0 .. N-1.

Definition at line 42 of file IntEqClasses.h.

References grow(), and N.

Member Function Documentation

void llvm::IntEqClasses::clear ( )

inline

clear - Clear all classes so that grow() will assign a unique class to every integer.

Definition at line 51 of file IntEqClasses.h.

References llvm::SmallVectorImpl< T >::clear().

void IntEqClasses::compress

(

)

compress - Compress equivalence classes by numbering them 0 .. M. This makes the equivalence class map immutable.

Definition at line 53 of file IntEqClasses.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by llvm::SchedDFSImpl::finalize().

unsigned IntEqClasses::findLeader

(

unsigned

a

)

const

findLeader - Compute the leader of a's equivalence class. This is the smallest member of the class. This requires an uncompressed map.

Definition at line 46 of file IntEqClasses.cpp.

unsigned llvm::IntEqClasses::getNumClasses ( ) const

inline

getNumClasses - Return the number of equivalence classes after compress() was called.

Definition at line 72 of file IntEqClasses.h.

Referenced by llvm::SchedDFSImpl::finalize(), and llvm::EdgeBundles::getNumBundles().

void IntEqClasses::grow

(

unsigned

N

)

grow - Increase capacity to hold 0 .. N-1, putting new integers in unique equivalence classes. This requires an uncompressed map.

Definition at line 25 of file IntEqClasses.cpp.

References N, llvm::SmallVectorTemplateBase< T, isPodLike >::push_back(), llvm::SmallVectorImpl< T >::reserve(), and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by IntEqClasses().

void IntEqClasses::join	(	unsigned	a,
		unsigned	b
	)

join - Join the equivalence classes of a and b. After joining classes, findLeader(a) == findLeader(b). This requires an uncompressed map.

Definition at line 32 of file IntEqClasses.cpp.

Referenced by llvm::SchedDFSImpl::joinPredSubtree().

unsigned llvm::IntEqClasses::operator[] ( unsigned  a ) const

inline

operator[] - Return a's equivalence class number, 0 .. getNumClasses()-1. This requires a compressed map.

Definition at line 76 of file IntEqClasses.h.

void IntEqClasses::uncompress

(

)

uncompress - Change back to the uncompressed representation that allows editing.

Definition at line 60 of file IntEqClasses.cpp.

References llvm::SmallVectorTemplateBase< T, isPodLike >::push_back(), and llvm::SmallVectorTemplateCommon< T, typename >::size().

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

• IntEqClasses.h
• IntEqClasses.cpp