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//===- Transforms/Instrumentation/MemorySanitizer.h - MSan Pass -----------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file defines the memoy sanitizer pass.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_TRANSFORMS_INSTRUMENTATION_MEMORYSANITIZER_H
#define LLVM_TRANSFORMS_INSTRUMENTATION_MEMORYSANITIZER_H

#include "llvm/IR/PassManager.h"
#include "llvm/Pass.h"

namespace llvm {

struct MemorySanitizerOptions {
  MemorySanitizerOptions() : MemorySanitizerOptions(0, false, false){};
  MemorySanitizerOptions(int TrackOrigins, bool Recover, bool Kernel);
  bool Kernel;
  int TrackOrigins;
  bool Recover;
};

// Insert MemorySanitizer instrumentation (detection of uninitialized reads)
FunctionPass *
createMemorySanitizerLegacyPassPass(MemorySanitizerOptions Options = {});

/// A function pass for msan instrumentation.
///
/// Instruments functions to detect unitialized reads. This function pass
/// inserts calls to runtime library functions. If the functions aren't declared
/// yet, the pass inserts the declarations. Otherwise the existing globals are
/// used.
struct MemorySanitizerPass : public PassInfoMixin<MemorySanitizerPass> {
  MemorySanitizerPass(MemorySanitizerOptions Options) : Options(Options) {}

  PreservedAnalyses run(Function &F, FunctionAnalysisManager &FAM);
  PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);

private:
  MemorySanitizerOptions Options;
};
}

#endif /* LLVM_TRANSFORMS_INSTRUMENTATION_MEMORYSANITIZER_H */