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1 //===-- llvm/AutoUpgrade.h - AutoUpgrade Helpers ----------------*- C++ -*-===//
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 //  These functions are implemented by lib/VMCore/AutoUpgrade.cpp.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_AUTOUPGRADE_H
15 #define LLVM_AUTOUPGRADE_H
16 
17 namespace llvm {
18   class Module;
19   class GlobalVariable;
20   class Function;
21   class CallInst;
22 
23   /// This is a more granular function that simply checks an intrinsic function
24   /// for upgrading, and returns true if it requires upgrading. It may return
25   /// null in NewFn if the all calls to the original intrinsic function
26   /// should be transformed to non-function-call instructions.
27   bool UpgradeIntrinsicFunction(Function *F, Function *&NewFn);
28 
29   /// This is the complement to the above, replacing a specific call to an
30   /// intrinsic function with a call to the specified new function.
31   void UpgradeIntrinsicCall(CallInst *CI, Function *NewFn);
32 
33   /// This is an auto-upgrade hook for any old intrinsic function syntaxes
34   /// which need to have both the function updated as well as all calls updated
35   /// to the new function. This should only be run in a post-processing fashion
36   /// so that it can update all calls to the old function.
37   void UpgradeCallsToIntrinsic(Function* F);
38 
39   /// This checks for global variables which should be upgraded. It returns true
40   /// if it requires upgrading.
41   bool UpgradeGlobalVariable(GlobalVariable *GV);
42 
43   /// This function checks debug info intrinsics. If an intrinsic is invalid
44   /// then this function simply removes the intrinsic.
45   void CheckDebugInfoIntrinsics(Module *M);
46 
47   /// This function upgrades the old pre-3.0 exception handling system to the
48   /// new one. N.B. This will be removed in 3.1.
49   void UpgradeExceptionHandling(Module *M);
50 } // End llvm namespace
51 
52 #endif
53