| // Copyright (c) 2020 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "source/fuzz/transformation_add_constant_null.h" |
| |
| #include "source/fuzz/fuzzer_util.h" |
| |
| namespace spvtools { |
| namespace fuzz { |
| |
| TransformationAddConstantNull::TransformationAddConstantNull( |
| const spvtools::fuzz::protobufs::TransformationAddConstantNull& message) |
| : message_(message) {} |
| |
| TransformationAddConstantNull::TransformationAddConstantNull(uint32_t fresh_id, |
| uint32_t type_id) { |
| message_.set_fresh_id(fresh_id); |
| message_.set_type_id(type_id); |
| } |
| |
| bool TransformationAddConstantNull::IsApplicable( |
| opt::IRContext* context, const TransformationContext& /*unused*/) const { |
| // A fresh id is required. |
| if (!fuzzerutil::IsFreshId(context, message_.fresh_id())) { |
| return false; |
| } |
| auto type = context->get_type_mgr()->GetType(message_.type_id()); |
| // The type must exist. |
| if (!type) { |
| return false; |
| } |
| // The type must be one of the types for which null constants are allowed, |
| // according to the SPIR-V spec. |
| return fuzzerutil::IsNullConstantSupported(*type); |
| } |
| |
| void TransformationAddConstantNull::Apply( |
| opt::IRContext* context, TransformationContext* /*unused*/) const { |
| context->module()->AddGlobalValue(MakeUnique<opt::Instruction>( |
| context, SpvOpConstantNull, message_.type_id(), message_.fresh_id(), |
| opt::Instruction::OperandList())); |
| fuzzerutil::UpdateModuleIdBound(context, message_.fresh_id()); |
| // We have added an instruction to the module, so need to be careful about the |
| // validity of existing analyses. |
| context->InvalidateAnalysesExceptFor(opt::IRContext::Analysis::kAnalysisNone); |
| } |
| |
| protobufs::Transformation TransformationAddConstantNull::ToMessage() const { |
| protobufs::Transformation result; |
| *result.mutable_add_constant_null() = message_; |
| return result; |
| } |
| |
| std::unordered_set<uint32_t> TransformationAddConstantNull::GetFreshIds() |
| const { |
| return {message_.fresh_id()}; |
| } |
| |
| } // namespace fuzz |
| } // namespace spvtools |