Revert "CodeGen: Use a binary format for instrumentation based profiling"

I've clearly done something wrong with how to get this to link
correctly. Reverting for now.

This reverts commit r203711.

llvm-svn: 203712

1 files changed, 23 insertions, 3 deletions

diff --git a/clang/lib/CodeGen/CodeGenPGO.h b/clang/lib/CodeGen/CodeGenPGO.h
index 7c19414a0bd..51d59cf9a9b 100644
--- a/clang/lib/CodeGen/CodeGenPGO.h
+++ b/clang/lib/CodeGen/CodeGenPGO.h
@@ -26,6 +26,27 @@ namespace clang {
 namespace CodeGen {
 class RegionCounter;
 
+/// The raw counter data from an instrumented PGO binary
+class PGOProfileData {
+private:
+  /// The PGO data
+  std::unique_ptr<llvm::MemoryBuffer> DataBuffer;
+  /// Offsets into DataBuffer for each function's counters
+  llvm::StringMap<unsigned> DataOffsets;
+  /// Execution counts for each function.
+  llvm::StringMap<uint64_t> FunctionCounts;
+  /// The maximal execution count among all functions.
+  uint64_t MaxFunctionCount;
+  CodeGenModule &CGM;
+public:
+  PGOProfileData(CodeGenModule &CGM, std::string Path);
+  /// Fill Counts with the profile data for the given function name. Returns
+  /// false on success.
+  bool getFunctionCounts(StringRef FuncName, std::vector<uint64_t> &Counts);
+  /// Return the maximum of all known function counts.
+  uint64_t getMaximumFunctionCount() { return MaxFunctionCount; }
+};
+
 /// Per-function PGO state. This class should generally not be used directly,
 /// but instead through the CodeGenFunction and RegionCounter types.
 class CodeGenPGO {
@@ -115,9 +136,8 @@ private:
   void setFuncName(llvm::Function *Fn);
   void mapRegionCounters(const Decl *D);
   void computeRegionCounts(const Decl *D);
-  void applyFunctionAttributes(llvm::ProfileDataReader *PGOReader,
-                               llvm::Function *Fn);
-  void loadRegionCounts(llvm::ProfileDataReader *PGOReader);
+  void applyFunctionAttributes(PGOProfileData *PGOData, llvm::Function *Fn);
+  void loadRegionCounts(PGOProfileData *PGOData);
   void emitCounterVariables();
 
   /// Emit code to increment the counter at the given index