| // Copyright (c) 2019 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_type_array.h" |
| |
| #include "source/fuzz/fuzzer_util.h" |
| |
| namespace spvtools { |
| namespace fuzz { |
| |
| TransformationAddTypeArray::TransformationAddTypeArray( |
| const spvtools::fuzz::protobufs::TransformationAddTypeArray& message) |
| : message_(message) {} |
| |
| TransformationAddTypeArray::TransformationAddTypeArray(uint32_t fresh_id, |
| uint32_t element_type_id, |
| uint32_t size_id) { |
| message_.set_fresh_id(fresh_id); |
| message_.set_element_type_id(element_type_id); |
| message_.set_size_id(size_id); |
| } |
| |
| bool TransformationAddTypeArray::IsApplicable( |
| opt::IRContext* context, |
| const spvtools::fuzz::FactManager& /*unused*/) const { |
| // A fresh id is required. |
| if (!fuzzerutil::IsFreshId(context, message_.fresh_id())) { |
| return false; |
| } |
| auto element_type = |
| context->get_type_mgr()->GetType(message_.element_type_id()); |
| if (!element_type || element_type->AsFunction()) { |
| // The element type id either does not refer to a type, or refers to a |
| // function type; both are illegal. |
| return false; |
| } |
| auto constant = |
| context->get_constant_mgr()->GetConstantsFromIds({message_.size_id()}); |
| if (constant.empty()) { |
| // The size id does not refer to a constant. |
| return false; |
| } |
| assert(constant.size() == 1 && |
| "Only one constant id was provided, so only one constant should have " |
| "been returned"); |
| |
| auto int_constant = constant[0]->AsIntConstant(); |
| if (!int_constant) { |
| // The size constant is not an integer. |
| return false; |
| } |
| // We require that the size constant be a 32-bit value that is positive when |
| // interpreted as being signed. |
| return int_constant->words().size() == 1 && int_constant->GetS32() >= 1; |
| } |
| |
| void TransformationAddTypeArray::Apply( |
| opt::IRContext* context, spvtools::fuzz::FactManager* /*unused*/) const { |
| opt::Instruction::OperandList in_operands; |
| in_operands.push_back({SPV_OPERAND_TYPE_ID, {message_.element_type_id()}}); |
| in_operands.push_back({SPV_OPERAND_TYPE_ID, {message_.size_id()}}); |
| context->module()->AddType(MakeUnique<opt::Instruction>( |
| context, SpvOpTypeArray, 0, message_.fresh_id(), in_operands)); |
| 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 TransformationAddTypeArray::ToMessage() const { |
| protobufs::Transformation result; |
| *result.mutable_add_type_array() = message_; |
| return result; |
| } |
| |
| } // namespace fuzz |
| } // namespace spvtools |