lib/Transforms/Instrumentation/RSProfiling.h

   1 //===- RSProfiling.h - Various profiling using random sampling ----------===//
   2 //
   3 //                      The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // See notes in RSProfiling.cpp
  11 //
  12 //===----------------------------------------------------------------------===//
  13 #include "llvm/Transforms/RSProfiling.h"
  14 #include <set>
  15
  16 namespace llvm {
  17   /// RSProfilers_std - a simple support class for profilers that handles most
  18   /// of the work of chaining and tracking inserted code.
  19   struct RSProfilers_std : public RSProfilers {
  20     static char ID;
  21     std::set<Value*> profcode;
  22     // Lookup up values in profcode
  23     virtual bool isProfiling(Value* v);
  24     // handles required chaining
  25     virtual void getAnalysisUsage(AnalysisUsage &AU) const;
  26     // places counter updates in basic blocks and recordes added instructions in
  27     // profcode
  28     void IncrementCounterInBlock(BasicBlock *BB, unsigned CounterNum,
  29                                  GlobalValue *CounterArray);
  30   };
  31 }