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  1. //===- llvm/IR/StructuralHash.h - IR Hash for expensive checks --*- 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. // This file provides hashing of the LLVM IR structure to be used to check
  10. // Passes modification status.
  11. //
  12. //===----------------------------------------------------------------------===//
  13.  
  14. #ifndef LLVM_IR_STRUCTURALHASH_H
  15. #define LLVM_IR_STRUCTURALHASH_H
  16.  
  17. #ifdef EXPENSIVE_CHECKS
  18.  
  19. #include <cstdint>
  20.  
  21. // This header is only meant to be used when -DEXPENSIVE_CHECKS is set
  22. namespace llvm {
  23.  
  24. class Function;
  25. class Module;
  26.  
  27. uint64_t StructuralHash(const Function &F);
  28. uint64_t StructuralHash(const Module &M);
  29.  
  30. } // end namespace llvm
  31.  
  32. #endif
  33.  
  34. #endif // LLVM_IR_STRUCTURALHASH_H
  35.