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