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89c5c63c3c
Summary: This patch prevents importing from (and therefore exporting from) any module with a "llvm.used" local value. Local values need to be promoted and renamed when importing, and their presense on the llvm.used variable indicates that there are opaque uses that won't see the rename. One such example is a use in inline assembly. See also the discussion at: http://lists.llvm.org/pipermail/llvm-dev/2016-April/098047.html As part of this, move collectUsedGlobalVariables out of Transforms/Utils and into IR/Module so that it can be used more widely. There are several other places in LLVM that used copies of this code that can be cleaned up as a follow on NFC patch. Reviewers: joker.eph Subscribers: pcc, llvm-commits, joker.eph Differential Revision: http://reviews.llvm.org/D18986 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266877 91177308-0d34-0410-b5e6-96231b3b80d8
65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
//===-- ModuleUtils.h - Functions to manipulate Modules ---------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This family of functions perform manipulations on Modules.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_UTILS_MODULEUTILS_H
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#define LLVM_TRANSFORMS_UTILS_MODULEUTILS_H
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#include "llvm/ADT/StringRef.h"
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#include <utility> // for std::pair
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namespace llvm {
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template <typename T> class ArrayRef;
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class Module;
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class Function;
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class GlobalValue;
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class GlobalVariable;
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class Constant;
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class StringRef;
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class Value;
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class Type;
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/// Append F to the list of global ctors of module M with the given Priority.
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/// This wraps the function in the appropriate structure and stores it along
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/// side other global constructors. For details see
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/// http://llvm.org/docs/LangRef.html#intg_global_ctors
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void appendToGlobalCtors(Module &M, Function *F, int Priority,
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Constant *Data = nullptr);
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/// Same as appendToGlobalCtors(), but for global dtors.
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void appendToGlobalDtors(Module &M, Function *F, int Priority,
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Constant *Data = nullptr);
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// Validate the result of Module::getOrInsertFunction called for an interface
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// function of given sanitizer. If the instrumented module defines a function
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// with the same name, their prototypes must match, otherwise
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// getOrInsertFunction returns a bitcast.
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Function *checkSanitizerInterfaceFunction(Constant *FuncOrBitcast);
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/// \brief Creates sanitizer constructor function, and calls sanitizer's init
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/// function from it.
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/// \return Returns pair of pointers to constructor, and init functions
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/// respectively.
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std::pair<Function *, Function *> createSanitizerCtorAndInitFunctions(
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Module &M, StringRef CtorName, StringRef InitName,
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ArrayRef<Type *> InitArgTypes, ArrayRef<Value *> InitArgs,
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StringRef VersionCheckName = StringRef());
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/// Rename all the anon functions in the module using a hash computed from
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/// the list of public globals in the module.
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bool nameUnamedFunctions(Module &M);
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} // End llvm namespace
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#endif // LLVM_TRANSFORMS_UTILS_MODULEUTILS_H
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