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//===- AutoUpgrade.h - AutoUpgrade Helpers ----------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// These functions are implemented by lib/IR/AutoUpgrade.cpp.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IR_AUTOUPGRADE_H
#define LLVM_IR_AUTOUPGRADE_H
#include "llvm/ADT/StringRef.h"
#include <vector>
namespace llvm {
class AttrBuilder;
class CallBase;
class Constant;
class Function;
class Instruction;
class GlobalVariable;
class MDNode;
class Module;
class StringRef;
class Type;
class Value;
template <typename T> class OperandBundleDefT;
using OperandBundleDef = OperandBundleDefT<Value *>;
/// This is a more granular function that simply checks an intrinsic function
/// for upgrading, and returns true if it requires upgrading. It may return
/// null in NewFn if the all calls to the original intrinsic function
/// should be transformed to non-function-call instructions.
bool UpgradeIntrinsicFunction(Function *F, Function *&NewFn,
bool CanUpgradeDebugIntrinsicsToRecords = true);
/// This is the complement to the above, replacing a specific call to an
/// intrinsic function with a call to the specified new function.
void UpgradeIntrinsicCall(CallBase *CB, Function *NewFn);
// This upgrades the comment for objc retain release markers in inline asm
// calls
void UpgradeInlineAsmString(std::string *AsmStr);
/// This is an auto-upgrade hook for any old intrinsic function syntaxes
/// which need to have both the function updated as well as all calls updated
/// to the new function. This should only be run in a post-processing fashion
/// so that it can update all calls to the old function.
void UpgradeCallsToIntrinsic(Function* F);
/// This checks for global variables which should be upgraded. If it requires
/// upgrading, returns a pointer to the upgraded variable.
GlobalVariable *UpgradeGlobalVariable(GlobalVariable *GV);
/// This checks for module flags which should be upgraded. It returns true if
/// module is modified.
bool UpgradeModuleFlags(Module &M);
/// Convert calls to ARC runtime functions to intrinsic calls and upgrade the
/// old retain release marker to new module flag format.
void UpgradeARCRuntime(Module &M);
void UpgradeSectionAttributes(Module &M);
/// Correct any IR that is relying on old function attribute behavior.
void UpgradeFunctionAttributes(Function &F);
/// If the given TBAA tag uses the scalar TBAA format, create a new node
/// corresponding to the upgrade to the struct-path aware TBAA format.
/// Otherwise return the \p TBAANode itself.
MDNode *UpgradeTBAANode(MDNode &TBAANode);
/// This is an auto-upgrade for bitcast between pointers with different
/// address spaces: the instruction is replaced by a pair ptrtoint+inttoptr.
Instruction *UpgradeBitCastInst(unsigned Opc, Value *V, Type *DestTy,
Instruction *&Temp);
/// This is an auto-upgrade for bitcast constant expression between pointers
/// with different address spaces: the instruction is replaced by a pair
/// ptrtoint+inttoptr.
Constant *UpgradeBitCastExpr(unsigned Opc, Constant *C, Type *DestTy);
/// Check the debug info version number, if it is out-dated, drop the debug
/// info. Return true if module is modified.
bool UpgradeDebugInfo(Module &M);
/// Check whether a string looks like an old loop attachment tag.
inline bool mayBeOldLoopAttachmentTag(StringRef Name) {
return Name.starts_with("llvm.vectorizer.");
}
/// Upgrade the loop attachment metadata node.
MDNode *upgradeInstructionLoopAttachment(MDNode &N);
/// Upgrade the datalayout string by adding a section for address space
/// pointers.
std::string UpgradeDataLayoutString(StringRef DL, StringRef Triple);
/// Upgrade attributes that changed format or kind.
void UpgradeAttributes(AttrBuilder &B);
/// Upgrade operand bundles (without knowing about their user instruction).
void UpgradeOperandBundles(std::vector<OperandBundleDef> &OperandBundles);
} // End llvm namespace
#endif
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