1 | //===- llvm/IR/StructuralHash.h - IR Hashing --------------------*- 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 | #include <cstdint> |
18 | |
19 | namespace llvm { |
20 | |
21 | class Function; |
22 | class Module; |
23 | |
24 | using IRHash = uint64_t; |
25 | |
26 | /// Returns a hash of the function \p F. |
27 | /// \param F The function to hash. |
28 | /// \param DetailedHash Whether or not to encode additional information in the |
29 | /// hash. The additional information added into the hash when this flag is set |
30 | /// to true includes instruction and operand type information. |
31 | IRHash StructuralHash(const Function &F, bool DetailedHash = false); |
32 | |
33 | /// Returns a hash of the module \p M by hashing all functions and global |
34 | /// variables contained within. \param M The module to hash. \param DetailedHash |
35 | /// Whether or not to encode additional information in the function hashes that |
36 | /// composed the module hash. |
37 | IRHash StructuralHash(const Module &M, bool DetailedHash = false); |
38 | |
39 | } // end namespace llvm |
40 | |
41 | #endif |
42 | |