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/transformation_swap_commutable_operands.h"
16
17 #include "source/fuzz/fuzzer_util.h"
18 #include "source/fuzz/instruction_descriptor.h"
19
20 namespace spvtools {
21 namespace fuzz {
22
TransformationSwapCommutableOperands(const spvtools::fuzz::protobufs::TransformationSwapCommutableOperands & message)23 TransformationSwapCommutableOperands::TransformationSwapCommutableOperands(
24 const spvtools::fuzz::protobufs::TransformationSwapCommutableOperands&
25 message)
26 : message_(message) {}
27
TransformationSwapCommutableOperands(const protobufs::InstructionDescriptor & instruction_descriptor)28 TransformationSwapCommutableOperands::TransformationSwapCommutableOperands(
29 const protobufs::InstructionDescriptor& instruction_descriptor) {
30 *message_.mutable_instruction_descriptor() = instruction_descriptor;
31 }
32
IsApplicable(opt::IRContext * ir_context,const TransformationContext &) const33 bool TransformationSwapCommutableOperands::IsApplicable(
34 opt::IRContext* ir_context, const TransformationContext& /*unused*/) const {
35 auto instruction =
36 FindInstruction(message_.instruction_descriptor(), ir_context);
37 if (instruction == nullptr) return false;
38
39 SpvOp opcode = static_cast<SpvOp>(
40 message_.instruction_descriptor().target_instruction_opcode());
41 assert(instruction->opcode() == opcode &&
42 "The located instruction must have the same opcode as in the "
43 "descriptor.");
44 return spvOpcodeIsCommutativeBinaryOperator(opcode);
45 }
46
Apply(opt::IRContext * ir_context,TransformationContext *) const47 void TransformationSwapCommutableOperands::Apply(
48 opt::IRContext* ir_context, TransformationContext* /*unused*/) const {
49 auto instruction =
50 FindInstruction(message_.instruction_descriptor(), ir_context);
51 // By design, the instructions defined to be commutative have exactly two
52 // input parameters.
53 std::swap(instruction->GetInOperand(0), instruction->GetInOperand(1));
54 }
55
ToMessage() const56 protobufs::Transformation TransformationSwapCommutableOperands::ToMessage()
57 const {
58 protobufs::Transformation result;
59 *result.mutable_swap_commutable_operands() = message_;
60 return result;
61 }
62
GetFreshIds() const63 std::unordered_set<uint32_t> TransformationSwapCommutableOperands::GetFreshIds()
64 const {
65 return std::unordered_set<uint32_t>();
66 }
67
68 } // namespace fuzz
69 } // namespace spvtools
70