1//===- 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/IR/AutoUpgrade.cpp.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_IR_AUTOUPGRADE_H
15#define LLVM_IR_AUTOUPGRADE_H
16
17#include <string>
18
19namespace llvm {
20  class CallInst;
21  class Constant;
22  class Function;
23  class Instruction;
24  class Module;
25  class GlobalVariable;
26  class Type;
27  class Value;
28
29  /// This is a more granular function that simply checks an intrinsic function
30  /// for upgrading, and returns true if it requires upgrading. It may return
31  /// null in NewFn if the all calls to the original intrinsic function
32  /// should be transformed to non-function-call instructions.
33  bool UpgradeIntrinsicFunction(Function *F, Function *&NewFn);
34
35  /// This is the complement to the above, replacing a specific call to an
36  /// intrinsic function with a call to the specified new function.
37  void UpgradeIntrinsicCall(CallInst *CI, Function *NewFn);
38
39  /// This is an auto-upgrade hook for any old intrinsic function syntaxes
40  /// which need to have both the function updated as well as all calls updated
41  /// to the new function. This should only be run in a post-processing fashion
42  /// so that it can update all calls to the old function.
43  void UpgradeCallsToIntrinsic(Function* F);
44
45  /// This checks for global variables which should be upgraded. It returns true
46  /// if it requires upgrading.
47  bool UpgradeGlobalVariable(GlobalVariable *GV);
48
49  /// If the TBAA tag for the given instruction uses the scalar TBAA format,
50  /// we upgrade it to the struct-path aware TBAA format.
51  void UpgradeInstWithTBAATag(Instruction *I);
52
53  /// This is an auto-upgrade for bitcast between pointers with different
54  /// address spaces: the instruction is replaced by a pair ptrtoint+inttoptr.
55  Instruction *UpgradeBitCastInst(unsigned Opc, Value *V, Type *DestTy,
56                                  Instruction *&Temp);
57
58  /// This is an auto-upgrade for bitcast constant expression between pointers
59  /// with different address spaces: the instruction is replaced by a pair
60  /// ptrtoint+inttoptr.
61  Value *UpgradeBitCastExpr(unsigned Opc, Constant *C, Type *DestTy);
62
63  /// Check the debug info version number, if it is out-dated, drop the debug
64  /// info. Return true if module is modified.
65  bool UpgradeDebugInfo(Module &M);
66
67  /// Upgrade a metadata string constant in place.
68  void UpgradeMDStringConstant(std::string &String);
69} // End llvm namespace
70
71#endif
72