1 | //===- AutoUpgrade.h - AutoUpgrade Helpers ----------------------*- C++ -*-===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | // These functions are implemented by lib/IR/AutoUpgrade.cpp. |
10 | // |
11 | //===----------------------------------------------------------------------===// |
12 | |
13 | #ifndef LLVM_IR_AUTOUPGRADE_H |
14 | #define LLVM_IR_AUTOUPGRADE_H |
15 | |
16 | #include "llvm/ADT/StringRef.h" |
17 | #include <vector> |
18 | |
19 | namespace llvm { |
20 | class AttrBuilder; |
21 | class CallBase; |
22 | class Constant; |
23 | class Function; |
24 | class Instruction; |
25 | class GlobalVariable; |
26 | class MDNode; |
27 | class Module; |
28 | class StringRef; |
29 | class Type; |
30 | class Value; |
31 | |
32 | template <typename T> class OperandBundleDefT; |
33 | using OperandBundleDef = OperandBundleDefT<Value *>; |
34 | |
35 | /// This is a more granular function that simply checks an intrinsic function |
36 | /// for upgrading, and returns true if it requires upgrading. It may return |
37 | /// null in NewFn if the all calls to the original intrinsic function |
38 | /// should be transformed to non-function-call instructions. |
39 | bool UpgradeIntrinsicFunction(Function *F, Function *&NewFn); |
40 | |
41 | /// This is the complement to the above, replacing a specific call to an |
42 | /// intrinsic function with a call to the specified new function. |
43 | void UpgradeIntrinsicCall(CallBase *CB, Function *NewFn); |
44 | |
45 | // This upgrades the comment for objc retain release markers in inline asm |
46 | // calls |
47 | void UpgradeInlineAsmString(std::string *AsmStr); |
48 | |
49 | /// This is an auto-upgrade hook for any old intrinsic function syntaxes |
50 | /// which need to have both the function updated as well as all calls updated |
51 | /// to the new function. This should only be run in a post-processing fashion |
52 | /// so that it can update all calls to the old function. |
53 | void UpgradeCallsToIntrinsic(Function* F); |
54 | |
55 | /// This checks for global variables which should be upgraded. If it requires |
56 | /// upgrading, returns a pointer to the upgraded variable. |
57 | GlobalVariable *UpgradeGlobalVariable(GlobalVariable *GV); |
58 | |
59 | /// This checks for module flags which should be upgraded. It returns true if |
60 | /// module is modified. |
61 | bool UpgradeModuleFlags(Module &M); |
62 | |
63 | /// Convert calls to ARC runtime functions to intrinsic calls and upgrade the |
64 | /// old retain release marker to new module flag format. |
65 | void UpgradeARCRuntime(Module &M); |
66 | |
67 | void UpgradeSectionAttributes(Module &M); |
68 | |
69 | /// Correct any IR that is relying on old function attribute behavior. |
70 | void UpgradeFunctionAttributes(Function &F); |
71 | |
72 | /// If the given TBAA tag uses the scalar TBAA format, create a new node |
73 | /// corresponding to the upgrade to the struct-path aware TBAA format. |
74 | /// Otherwise return the \p TBAANode itself. |
75 | MDNode *UpgradeTBAANode(MDNode &TBAANode); |
76 | |
77 | /// This is an auto-upgrade for bitcast between pointers with different |
78 | /// address spaces: the instruction is replaced by a pair ptrtoint+inttoptr. |
79 | Instruction *UpgradeBitCastInst(unsigned Opc, Value *V, Type *DestTy, |
80 | Instruction *&Temp); |
81 | |
82 | /// This is an auto-upgrade for bitcast constant expression between pointers |
83 | /// with different address spaces: the instruction is replaced by a pair |
84 | /// ptrtoint+inttoptr. |
85 | Constant *UpgradeBitCastExpr(unsigned Opc, Constant *C, Type *DestTy); |
86 | |
87 | /// Check the debug info version number, if it is out-dated, drop the debug |
88 | /// info. Return true if module is modified. |
89 | bool UpgradeDebugInfo(Module &M); |
90 | |
91 | /// Check whether a string looks like an old loop attachment tag. |
92 | inline bool mayBeOldLoopAttachmentTag(StringRef Name) { |
93 | return Name.starts_with(Prefix: "llvm.vectorizer." ); |
94 | } |
95 | |
96 | /// Upgrade the loop attachment metadata node. |
97 | MDNode *upgradeInstructionLoopAttachment(MDNode &N); |
98 | |
99 | /// Upgrade the datalayout string by adding a section for address space |
100 | /// pointers. |
101 | std::string UpgradeDataLayoutString(StringRef DL, StringRef Triple); |
102 | |
103 | /// Upgrade attributes that changed format or kind. |
104 | void UpgradeAttributes(AttrBuilder &B); |
105 | |
106 | /// Upgrade operand bundles (without knowing about their user instruction). |
107 | void UpgradeOperandBundles(std::vector<OperandBundleDef> &OperandBundles); |
108 | |
109 | } // End llvm namespace |
110 | |
111 | #endif |
112 | |