1 // Copyright (c) 2020 Vasyl Teliman
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //     http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #ifndef SOURCE_FUZZ_FUZZER_PASS_PERMUTE_FUNCTION_PARAMETERS_H_
16 #define SOURCE_FUZZ_FUZZER_PASS_PERMUTE_FUNCTION_PARAMETERS_H_
17 
18 #include "source/fuzz/fuzzer_pass.h"
19 
20 namespace spvtools {
21 namespace fuzz {
22 
23 // Fuzzer pass that, given a non-entry-point function taking n parameters
24 // and a permutation of the set [0, n - 1]:
25 //   1. Introduces a new function type that is the same as the original
26 //      function's type but with the order of arguments permuted
27 //      (only add this if it doesn't already exist)
28 //   2. Changes the type of the function to this type
29 //   3. Adjusts all calls to the function so that their arguments are permuted
30 class FuzzerPassPermuteFunctionParameters : public FuzzerPass {
31  public:
32   FuzzerPassPermuteFunctionParameters(
33       opt::IRContext* ir_context, TransformationContext* transformation_context,
34       FuzzerContext* fuzzer_context,
35       protobufs::TransformationSequence* transformations);
36 
37   ~FuzzerPassPermuteFunctionParameters() override;
38 
39   void Apply() override;
40 };
41 
42 }  // namespace fuzz
43 }  // namespace spvtools
44 
45 #endif  // SOURCE_FUZZ_FUZZER_PASS_PERMUTE_FUNCTION_PARAMETERS_H_
46