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_toggle_access_chain_instruction.h"
16
17 #include "source/fuzz/fuzzer_util.h"
18 #include "source/fuzz/instruction_descriptor.h"
19
20 namespace spvtools {
21 namespace fuzz {
22
23 TransformationToggleAccessChainInstruction::
TransformationToggleAccessChainInstruction(protobufs::TransformationToggleAccessChainInstruction message)24 TransformationToggleAccessChainInstruction(
25 protobufs::TransformationToggleAccessChainInstruction message)
26 : message_(std::move(message)) {}
27
28 TransformationToggleAccessChainInstruction::
TransformationToggleAccessChainInstruction(const protobufs::InstructionDescriptor & instruction_descriptor)29 TransformationToggleAccessChainInstruction(
30 const protobufs::InstructionDescriptor& instruction_descriptor) {
31 *message_.mutable_instruction_descriptor() = instruction_descriptor;
32 }
33
IsApplicable(opt::IRContext * ir_context,const TransformationContext &) const34 bool TransformationToggleAccessChainInstruction::IsApplicable(
35 opt::IRContext* ir_context, const TransformationContext& /*unused*/) const {
36 auto instruction =
37 FindInstruction(message_.instruction_descriptor(), ir_context);
38 if (instruction == nullptr) {
39 return false;
40 }
41
42 SpvOp opcode = static_cast<SpvOp>(
43 message_.instruction_descriptor().target_instruction_opcode());
44
45 assert(instruction->opcode() == opcode &&
46 "The located instruction must have the same opcode as in the "
47 "descriptor.");
48
49 if (opcode == SpvOpAccessChain || opcode == SpvOpInBoundsAccessChain) {
50 return true;
51 }
52
53 return false;
54 }
55
Apply(opt::IRContext * ir_context,TransformationContext *) const56 void TransformationToggleAccessChainInstruction::Apply(
57 opt::IRContext* ir_context, TransformationContext* /*unused*/) const {
58 auto instruction =
59 FindInstruction(message_.instruction_descriptor(), ir_context);
60 SpvOp opcode = instruction->opcode();
61
62 if (opcode == SpvOpAccessChain) {
63 instruction->SetOpcode(SpvOpInBoundsAccessChain);
64 } else {
65 assert(opcode == SpvOpInBoundsAccessChain &&
66 "The located instruction must be an OpInBoundsAccessChain "
67 "instruction.");
68 instruction->SetOpcode(SpvOpAccessChain);
69 }
70 }
71
72 protobufs::Transformation
ToMessage() const73 TransformationToggleAccessChainInstruction::ToMessage() const {
74 protobufs::Transformation result;
75 *result.mutable_toggle_access_chain_instruction() = message_;
76 return result;
77 }
78
79 std::unordered_set<uint32_t>
GetFreshIds() const80 TransformationToggleAccessChainInstruction::GetFreshIds() const {
81 return std::unordered_set<uint32_t>();
82 }
83
84 } // namespace fuzz
85 } // namespace spvtools
86