llvm-6502/include/llvm/Analysis/ProfileInfo.h

//===- llvm/Analysis/ProfileInfo.h - Profile Info Interface -----*- C++ -*-===//
// 
//                     The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
// 
//===----------------------------------------------------------------------===//
//
// This file defines the generic ProfileInfo interface, which is used as the
// common interface used by all clients of profiling information, and
// implemented either by making static guestimations, or by actually reading in
// profiling information gathered by running the program.
//
// Note that to be useful, all profile-based optimizations should preserve
// ProfileInfo, which requires that they notify it when changes to the CFG are
// made.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_ANALYSIS_PROFILEINFO_H
#define LLVM_ANALYSIS_PROFILEINFO_H

namespace llvm {
  class BasicBlock;

  struct ProfileInfo {
    virtual ~ProfileInfo();  // We want to be subclassed
    
    //===------------------------------------------------------------------===//
    /// Profile Information Queries
    ///
    virtual unsigned getExecutionCount(BasicBlock *BB) = 0;
    
    //===------------------------------------------------------------------===//
    /// Analysis Update Methods
    ///

  };

} // End llvm namespace

#endif