1 // Copyright (c) 2020 André Perez Maselco
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 #include "source/fuzz/fuzzer_pass_replace_linear_algebra_instructions.h"
16
17 #include "source/fuzz/fuzzer_util.h"
18 #include "source/fuzz/instruction_descriptor.h"
19 #include "source/fuzz/transformation_replace_linear_algebra_instruction.h"
20
21 namespace spvtools {
22 namespace fuzz {
23
24 FuzzerPassReplaceLinearAlgebraInstructions::
FuzzerPassReplaceLinearAlgebraInstructions(opt::IRContext * ir_context,TransformationContext * transformation_context,FuzzerContext * fuzzer_context,protobufs::TransformationSequence * transformations)25 FuzzerPassReplaceLinearAlgebraInstructions(
26 opt::IRContext* ir_context,
27 TransformationContext* transformation_context,
28 FuzzerContext* fuzzer_context,
29 protobufs::TransformationSequence* transformations)
30 : FuzzerPass(ir_context, transformation_context, fuzzer_context,
31 transformations) {}
32
33 FuzzerPassReplaceLinearAlgebraInstructions::
34 ~FuzzerPassReplaceLinearAlgebraInstructions() = default;
35
Apply()36 void FuzzerPassReplaceLinearAlgebraInstructions::Apply() {
37 // For each instruction, checks whether it is a linear algebra instruction. In
38 // this case, the transformation is randomly applied.
39 for (auto& function : *GetIRContext()->module()) {
40 for (auto& block : function) {
41 for (auto& instruction : block) {
42 if (!spvOpcodeIsLinearAlgebra(instruction.opcode())) {
43 continue;
44 }
45
46 if (!GetFuzzerContext()->ChoosePercentage(
47 GetFuzzerContext()
48 ->GetChanceOfReplacingLinearAlgebraInstructions())) {
49 continue;
50 }
51
52 ApplyTransformation(TransformationReplaceLinearAlgebraInstruction(
53 GetFuzzerContext()->GetFreshIds(
54 TransformationReplaceLinearAlgebraInstruction::
55 GetRequiredFreshIdCount(GetIRContext(), &instruction)),
56 MakeInstructionDescriptor(GetIRContext(), &instruction)));
57 }
58 }
59 }
60 }
61
62 } // namespace fuzz
63 } // namespace spvtools
64