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(const spvtools::fuzz::protobufs::TransformationToggleAccessChainInstruction & message)24 TransformationToggleAccessChainInstruction(
25 const spvtools::fuzz::protobufs::
26 TransformationToggleAccessChainInstruction& message)
27 : message_(message) {}
28
29 TransformationToggleAccessChainInstruction::
TransformationToggleAccessChainInstruction(const protobufs::InstructionDescriptor & instruction_descriptor)30 TransformationToggleAccessChainInstruction(
31 const protobufs::InstructionDescriptor& instruction_descriptor) {
32 *message_.mutable_instruction_descriptor() = instruction_descriptor;
33 }
34
IsApplicable(opt::IRContext * ir_context,const TransformationContext &) const35 bool TransformationToggleAccessChainInstruction::IsApplicable(
36 opt::IRContext* ir_context, const TransformationContext& /*unused*/) const {
37 auto instruction =
38 FindInstruction(message_.instruction_descriptor(), ir_context);
39 if (instruction == nullptr) {
40 return false;
41 }
42
43 SpvOp opcode = static_cast<SpvOp>(
44 message_.instruction_descriptor().target_instruction_opcode());
45
46 assert(instruction->opcode() == opcode &&
47 "The located instruction must have the same opcode as in the "
48 "descriptor.");
49
50 if (opcode == SpvOpAccessChain || opcode == SpvOpInBoundsAccessChain) {
51 return true;
52 }
53
54 return false;
55 }
56
Apply(opt::IRContext * ir_context,TransformationContext *) const57 void TransformationToggleAccessChainInstruction::Apply(
58 opt::IRContext* ir_context, TransformationContext* /*unused*/) const {
59 auto instruction =
60 FindInstruction(message_.instruction_descriptor(), ir_context);
61 SpvOp opcode = instruction->opcode();
62
63 if (opcode == SpvOpAccessChain) {
64 instruction->SetOpcode(SpvOpInBoundsAccessChain);
65 } else {
66 assert(opcode == SpvOpInBoundsAccessChain &&
67 "The located instruction must be an OpInBoundsAccessChain "
68 "instruction.");
69 instruction->SetOpcode(SpvOpAccessChain);
70 }
71 }
72
73 protobufs::Transformation
ToMessage() const74 TransformationToggleAccessChainInstruction::ToMessage() const {
75 protobufs::Transformation result;
76 *result.mutable_toggle_access_chain_instruction() = message_;
77 return result;
78 }
79
80 std::unordered_set<uint32_t>
GetFreshIds() const81 TransformationToggleAccessChainInstruction::GetFreshIds() const {
82 return std::unordered_set<uint32_t>();
83 }
84
85 } // namespace fuzz
86 } // namespace spvtools
87