1 //===- AutoUpgrade.h - AutoUpgrade Helpers ----------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // These functions are implemented by lib/IR/AutoUpgrade.cpp.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_IR_AUTOUPGRADE_H
15 #define LLVM_IR_AUTOUPGRADE_H
17 #include "llvm/ADT/StringRef.h"
30 /// This is a more granular function that simply checks an intrinsic function
31 /// for upgrading, and returns true if it requires upgrading. It may return
32 /// null in NewFn if the all calls to the original intrinsic function
33 /// should be transformed to non-function-call instructions.
34 bool UpgradeIntrinsicFunction(Function *F, Function *&NewFn);
36 /// This is the complement to the above, replacing a specific call to an
37 /// intrinsic function with a call to the specified new function.
38 void UpgradeIntrinsicCall(CallInst *CI, Function *NewFn);
40 /// This is an auto-upgrade hook for any old intrinsic function syntaxes
41 /// which need to have both the function updated as well as all calls updated
42 /// to the new function. This should only be run in a post-processing fashion
43 /// so that it can update all calls to the old function.
44 void UpgradeCallsToIntrinsic(Function* F);
46 /// This checks for global variables which should be upgraded. It returns true
47 /// if it requires upgrading.
48 bool UpgradeGlobalVariable(GlobalVariable *GV);
50 /// This checks for module flags which should be upgraded. It returns true if
51 /// module is modified.
52 bool UpgradeModuleFlags(Module &M);
54 void UpgradeSectionAttributes(Module &M);
56 /// If the given TBAA tag uses the scalar TBAA format, create a new node
57 /// corresponding to the upgrade to the struct-path aware TBAA format.
58 /// Otherwise return the \p TBAANode itself.
59 MDNode *UpgradeTBAANode(MDNode &TBAANode);
61 /// This is an auto-upgrade for bitcast between pointers with different
62 /// address spaces: the instruction is replaced by a pair ptrtoint+inttoptr.
63 Instruction *UpgradeBitCastInst(unsigned Opc, Value *V, Type *DestTy,
66 /// This is an auto-upgrade for bitcast constant expression between pointers
67 /// with different address spaces: the instruction is replaced by a pair
68 /// ptrtoint+inttoptr.
69 Value *UpgradeBitCastExpr(unsigned Opc, Constant *C, Type *DestTy);
71 /// Check the debug info version number, if it is out-dated, drop the debug
72 /// info. Return true if module is modified.
73 bool UpgradeDebugInfo(Module &M);
75 /// Check whether a string looks like an old loop attachment tag.
76 inline bool mayBeOldLoopAttachmentTag(StringRef Name) {
77 return Name.startswith("llvm.vectorizer.");
80 /// Upgrade the loop attachment metadata node.
81 MDNode *upgradeInstructionLoopAttachment(MDNode &N);
83 } // End llvm namespace