//===- InlineCommon.h - Code common to all inliners -------------*- 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 a simple policy-based bottom-up inliner. This file // implements all of the boring mechanics of the bottom-up inlining, while the // subclass determines WHAT to inline, which is the much more interesting // component. // //===----------------------------------------------------------------------===// #ifndef INLINER_H #define INLINER_H #define DEBUG_TYPE "inline" #include "llvm/CallGraphSCCPass.h" namespace llvm { class CallSite; /// Inliner - This class contains all of the helper code which is used to /// perform the inlining operations that does not depend on the policy. /// struct Inliner : public CallGraphSCCPass { Inliner(); /// getAnalysisUsage - For this class, we declare that we require and preserve /// the call graph. If the derived class implements this method, it should /// always explicitly call the implementation here. virtual void getAnalysisUsage(AnalysisUsage &Info) const; // Main run interface method, this implements the interface required by the // Pass class. virtual bool runOnSCC(const std::vector<CallGraphNode *> &SCC); // doFinalization - Remove now-dead linkonce functions at the end of // processing to avoid breaking the SCC traversal. virtual bool doFinalization(CallGraph &CG); /// This method returns the value specified by the -inline-threshold value, /// specified on the command line. This is typically not directly needed. /// unsigned getInlineThreshold() const { return InlineThreshold; } /// getInlineCost - This method must be implemented by the subclass to /// determine the cost of inlining the specified call site. If the cost /// returned is greater than the current inline threshold, the call site is /// not inlined. /// virtual int getInlineCost(CallSite CS) = 0; private: // InlineThreshold - Cache the value here for easy access. unsigned InlineThreshold; }; } // End llvm namespace #endif