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04317cc618
Modified patch by Adam Preuss. This builds on the existing framework for block tracing, edge profiling and optimal edge profiling. See -help-hidden for new flags. For documentation, see the technical report "Implementation of Path Profiling..." in llvm.org/pubs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124515 91177308-0d34-0410-b5e6-96231b3b80d8
114 lines
3.1 KiB
C++
114 lines
3.1 KiB
C++
//===- PathProfileInfo.h --------------------------------------*- C++ -*---===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file outlines the interface used by optimizers to load path profiles.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_PATHPROFILEINFO_H
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#define LLVM_PATHPROFILEINFO_H
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#include "llvm/BasicBlock.h"
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#include "llvm/Analysis/PathNumbering.h"
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#include <stack>
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namespace llvm {
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class ProfilePath;
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class ProfilePathEdge;
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class PathProfileInfo;
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typedef std::vector<ProfilePathEdge> ProfilePathEdgeVector;
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typedef std::vector<ProfilePathEdge>::iterator ProfilePathEdgeIterator;
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typedef std::vector<BasicBlock*> ProfilePathBlockVector;
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typedef std::vector<BasicBlock*>::iterator ProfilePathBlockIterator;
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typedef std::map<unsigned int,ProfilePath*> ProfilePathMap;
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typedef std::map<unsigned int,ProfilePath*>::iterator ProfilePathIterator;
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typedef std::map<Function*,unsigned int> FunctionPathCountMap;
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typedef std::map<Function*,ProfilePathMap> FunctionPathMap;
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typedef std::map<Function*,ProfilePathMap>::iterator FunctionPathIterator;
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class ProfilePathEdge {
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public:
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ProfilePathEdge(BasicBlock* source, BasicBlock* target,
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unsigned duplicateNumber);
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inline unsigned getDuplicateNumber() { return _duplicateNumber; }
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inline BasicBlock* getSource() { return _source; }
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inline BasicBlock* getTarget() { return _target; }
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protected:
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BasicBlock* _source;
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BasicBlock* _target;
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unsigned _duplicateNumber;
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};
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class ProfilePath {
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public:
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ProfilePath(unsigned int number, unsigned int count,
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double countStdDev, PathProfileInfo* ppi);
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double getFrequency() const;
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inline unsigned int getNumber() const { return _number; }
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inline unsigned int getCount() const { return _count; }
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inline double getCountStdDev() const { return _countStdDev; }
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ProfilePathEdgeVector* getPathEdges() const;
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ProfilePathBlockVector* getPathBlocks() const;
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BasicBlock* getFirstBlockInPath() const;
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private:
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unsigned int _number;
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unsigned int _count;
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double _countStdDev;
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// double pointer back to the profiling info
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PathProfileInfo* _ppi;
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};
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// TODO: overload [] operator for getting path
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// Add: getFunctionCallCount()
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class PathProfileInfo {
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public:
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PathProfileInfo();
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~PathProfileInfo();
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void setCurrentFunction(Function* F);
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Function* getCurrentFunction() const;
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BasicBlock* getCurrentFunctionEntry();
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ProfilePath* getPath(unsigned int number);
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unsigned int getPotentialPathCount();
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ProfilePathIterator pathBegin();
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ProfilePathIterator pathEnd();
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unsigned int pathsRun();
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static char ID; // Pass identification
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std::string argList;
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protected:
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FunctionPathMap _functionPaths;
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FunctionPathCountMap _functionPathCounts;
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private:
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BallLarusDag* _currentDag;
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Function* _currentFunction;
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friend class ProfilePath;
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};
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} // end namespace llvm
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#endif
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