| //===- 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 { |
| static char ID; |
| 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 |