MemorySanitizer.h revision 360784 
1//===- Transforms/Instrumentation/MemorySanitizer.h - MSan Pass -----------===//
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// This file defines the memoy sanitizer pass.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_TRANSFORMS_INSTRUMENTATION_MEMORYSANITIZER_H
14#define LLVM_TRANSFORMS_INSTRUMENTATION_MEMORYSANITIZER_H
15
16#include "llvm/IR/PassManager.h"
17#include "llvm/Pass.h"
18
19namespace llvm {
20
21struct MemorySanitizerOptions {
22  MemorySanitizerOptions() : MemorySanitizerOptions(0, false, false){};
23  MemorySanitizerOptions(int TrackOrigins, bool Recover, bool Kernel);
24  bool Kernel;
25  int TrackOrigins;
26  bool Recover;
27};
28
29// Insert MemorySanitizer instrumentation (detection of uninitialized reads)
30FunctionPass *
31createMemorySanitizerLegacyPassPass(MemorySanitizerOptions Options = {});
32
33/// A function pass for msan instrumentation.
34///
35/// Instruments functions to detect unitialized reads. This function pass
36/// inserts calls to runtime library functions. If the functions aren't declared
37/// yet, the pass inserts the declarations. Otherwise the existing globals are
38/// used.
39struct MemorySanitizerPass : public PassInfoMixin<MemorySanitizerPass> {
40  MemorySanitizerPass(MemorySanitizerOptions Options) : Options(Options) {}
41
42  PreservedAnalyses run(Function &F, FunctionAnalysisManager &FAM);
43  PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
44
45private:
46  MemorySanitizerOptions Options;
47};
48}
49
50#endif /* LLVM_TRANSFORMS_INSTRUMENTATION_MEMORYSANITIZER_H */
51