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 "llvm/ADT/StringRef.h" 18 19 namespace llvm { 20 class CallInst; 21 class Constant; 22 class Function; 23 class Instruction; 24 class MDNode; 25 class Module; 26 class GlobalVariable; 27 class Type; 28 class Value; 29 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); 35 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); 39 40 // This upgrades the comment for objc retain release markers in inline asm 41 // calls 42 void UpgradeInlineAsmString(std::string *AsmStr); 43 44 /// This is an auto-upgrade hook for any old intrinsic function syntaxes 45 /// which need to have both the function updated as well as all calls updated 46 /// to the new function. This should only be run in a post-processing fashion 47 /// so that it can update all calls to the old function. 48 void UpgradeCallsToIntrinsic(Function* F); 49 50 /// This checks for global variables which should be upgraded. It returns true 51 /// if it requires upgrading. 52 bool UpgradeGlobalVariable(GlobalVariable *GV); 53 54 /// This checks for module flags which should be upgraded. It returns true if 55 /// module is modified. 56 bool UpgradeModuleFlags(Module &M); 57 58 /// This checks for objc retain release marker which should be upgraded. It 59 /// returns true if module is modified. 60 bool UpgradeRetainReleaseMarker(Module &M); 61 62 void UpgradeSectionAttributes(Module &M); 63 64 /// If the given TBAA tag uses the scalar TBAA format, create a new node 65 /// corresponding to the upgrade to the struct-path aware TBAA format. 66 /// Otherwise return the \p TBAANode itself. 67 MDNode *UpgradeTBAANode(MDNode &TBAANode); 68 69 /// This is an auto-upgrade for bitcast between pointers with different 70 /// address spaces: the instruction is replaced by a pair ptrtoint+inttoptr. 71 Instruction *UpgradeBitCastInst(unsigned Opc, Value *V, Type *DestTy, 72 Instruction *&Temp); 73 74 /// This is an auto-upgrade for bitcast constant expression between pointers 75 /// with different address spaces: the instruction is replaced by a pair 76 /// ptrtoint+inttoptr. 77 Value *UpgradeBitCastExpr(unsigned Opc, Constant *C, Type *DestTy); 78 79 /// Check the debug info version number, if it is out-dated, drop the debug 80 /// info. Return true if module is modified. 81 bool UpgradeDebugInfo(Module &M); 82 83 /// Check whether a string looks like an old loop attachment tag. mayBeOldLoopAttachmentTag(StringRef Name)84 inline bool mayBeOldLoopAttachmentTag(StringRef Name) { 85 return Name.startswith("llvm.vectorizer."); 86 } 87 88 /// Upgrade the loop attachment metadata node. 89 MDNode *upgradeInstructionLoopAttachment(MDNode &N); 90 91 } // End llvm namespace 92 93 #endif 94