Remove the very substantial, largely unmaintained legacy PGO

infrastructure.

This was essentially work toward PGO based on a design that had several
flaws, partially dating from a time when LLVM had a different
architecture, and with an effort to modernize it abandoned without being
completed. Since then, it has bitrotted for several years further. The
result is nearly unusable, and isn't helping any of the modern PGO
efforts. Instead, it is getting in the way, adding confusion about PGO
in LLVM and distracting everyone with maintenance on essentially dead
code. Removing it paves the way for modern efforts around PGO.

Among other effects, this removes the last of the runtime libraries from
LLVM. Those are being developed in the separate 'compiler-rt' project
now, with somewhat different licensing specifically more approriate for
runtimes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191835 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 112 deletions

diff --git a/include/llvm/Analysis/PathProfileInfo.h b/include/llvm/Analysis/PathProfileInfo.h
deleted file mode 100644
index 4fce16ef0d..0000000000
--- a/include/llvm/Analysis/PathProfileInfo.h
+++ /dev/null
@@ -1,112 +0,0 @@
-//===- PathProfileInfo.h --------------------------------------*- C++ -*---===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file outlines the interface used by optimizers to load path profiles.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_ANALYSIS_PATHPROFILEINFO_H
-#define LLVM_ANALYSIS_PATHPROFILEINFO_H
-
-#include "llvm/Analysis/PathNumbering.h"
-#include "llvm/IR/BasicBlock.h"
-
-namespace llvm {
-
-class ProfilePath;
-class ProfilePathEdge;
-class PathProfileInfo;
-
-typedef std::vector<ProfilePathEdge> ProfilePathEdgeVector;
-typedef std::vector<ProfilePathEdge>::iterator ProfilePathEdgeIterator;
-
-typedef std::vector<BasicBlock*> ProfilePathBlockVector;
-typedef std::vector<BasicBlock*>::iterator ProfilePathBlockIterator;
-
-typedef std::map<unsigned int,ProfilePath*> ProfilePathMap;
-typedef std::map<unsigned int,ProfilePath*>::iterator ProfilePathIterator;
-
-typedef std::map<Function*,unsigned int> FunctionPathCountMap;
-typedef std::map<Function*,ProfilePathMap> FunctionPathMap;
-typedef std::map<Function*,ProfilePathMap>::iterator FunctionPathIterator;
-
-class ProfilePathEdge {
-public:
-  ProfilePathEdge(BasicBlock* source, BasicBlock* target,
-                  unsigned duplicateNumber);
-
-  inline unsigned getDuplicateNumber() { return _duplicateNumber; }
-  inline BasicBlock* getSource() { return _source; }
-  inline BasicBlock* getTarget() { return _target; }
-
-protected:
-  BasicBlock* _source;
-  BasicBlock* _target;
-  unsigned _duplicateNumber;
-};
-
-class ProfilePath {
-public:
-  ProfilePath(unsigned int number, unsigned int count,
-              double countStdDev, PathProfileInfo* ppi);
-
-  double getFrequency() const;
-
-  inline unsigned int getNumber() const { return _number; }
-  inline unsigned int getCount() const { return _count; }
-  inline double getCountStdDev() const { return _countStdDev; }
-
-  ProfilePathEdgeVector* getPathEdges() const;
-  ProfilePathBlockVector* getPathBlocks() const;
-
-  BasicBlock* getFirstBlockInPath() const;
-
-private:
-  unsigned int _number;
-  unsigned int _count;
-  double _countStdDev;
-
-  // double pointer back to the profiling info
-  PathProfileInfo* _ppi;
-};
-
-// TODO: overload [] operator for getting path
-// Add: getFunctionCallCount()
-class PathProfileInfo {
-  public:
-  PathProfileInfo();
-  ~PathProfileInfo();
-
-  void setCurrentFunction(Function* F);
-  Function* getCurrentFunction() const;
-  BasicBlock* getCurrentFunctionEntry();
-
-  ProfilePath* getPath(unsigned int number);
-  unsigned int getPotentialPathCount();
-
-  ProfilePathIterator pathBegin();
-  ProfilePathIterator pathEnd();
-  unsigned int pathsRun();
-
-  static char ID; // Pass identification
-  std::string argList;
-
-protected:
-  FunctionPathMap _functionPaths;
-  FunctionPathCountMap _functionPathCounts;
-
-private:
-  BallLarusDag* _currentDag;
-  Function* _currentFunction;
-
-  friend class ProfilePath;
-};
-} // end namespace llvm
-
-#endif