| // 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_int.h" |
| |
| #include "source/fuzz/fuzzer_util.h" |
| |
| namespace spvtools { |
| namespace fuzz { |
| |
| TransformationAddTypeInt::TransformationAddTypeInt( |
| protobufs::TransformationAddTypeInt message) |
| : message_(std::move(message)) {} |
| |
| TransformationAddTypeInt::TransformationAddTypeInt(uint32_t fresh_id, |
| uint32_t width, |
| bool is_signed) { |
| message_.set_fresh_id(fresh_id); |
| message_.set_width(width); |
| message_.set_is_signed(is_signed); |
| } |
| |
| bool TransformationAddTypeInt::IsApplicable( |
| opt::IRContext* ir_context, const TransformationContext& /*unused*/) const { |
| // The id must be fresh. |
| if (!fuzzerutil::IsFreshId(ir_context, message_.fresh_id())) { |
| return false; |
| } |
| |
| // Checks integer type width capabilities. |
| switch (message_.width()) { |
| case 8: |
| // The Int8 capability must be present. |
| if (!ir_context->get_feature_mgr()->HasCapability( |
| spv::Capability::Int8)) { |
| return false; |
| } |
| break; |
| case 16: |
| // The Int16 capability must be present. |
| if (!ir_context->get_feature_mgr()->HasCapability( |
| spv::Capability::Int16)) { |
| return false; |
| } |
| break; |
| case 32: |
| // No capabilities needed. |
| break; |
| case 64: |
| // The Int64 capability must be present. |
| if (!ir_context->get_feature_mgr()->HasCapability( |
| spv::Capability::Int64)) { |
| return false; |
| } |
| break; |
| default: |
| assert(false && "Unexpected integer type width"); |
| return false; |
| } |
| |
| // Applicable if there is no int type with this width and signedness already |
| // declared in the module. |
| return fuzzerutil::MaybeGetIntegerType(ir_context, message_.width(), |
| message_.is_signed()) == 0; |
| } |
| |
| void TransformationAddTypeInt::Apply(opt::IRContext* ir_context, |
| TransformationContext* /*unused*/) const { |
| auto type_instruction = MakeUnique<opt::Instruction>( |
| ir_context, spv::Op::OpTypeInt, 0, message_.fresh_id(), |
| opt::Instruction::OperandList{ |
| {SPV_OPERAND_TYPE_LITERAL_INTEGER, {message_.width()}}, |
| {SPV_OPERAND_TYPE_LITERAL_INTEGER, |
| {message_.is_signed() ? 1u : 0u}}}); |
| auto type_instruction_ptr = type_instruction.get(); |
| ir_context->module()->AddType(std::move(type_instruction)); |
| |
| fuzzerutil::UpdateModuleIdBound(ir_context, message_.fresh_id()); |
| |
| // Inform the def use manager that there is a new definition. Invalidate the |
| // type manager since we have added a new type. |
| ir_context->get_def_use_mgr()->AnalyzeInstDef(type_instruction_ptr); |
| ir_context->InvalidateAnalyses(opt::IRContext::kAnalysisTypes); |
| } |
| |
| protobufs::Transformation TransformationAddTypeInt::ToMessage() const { |
| protobufs::Transformation result; |
| *result.mutable_add_type_int() = message_; |
| return result; |
| } |
| |
| std::unordered_set<uint32_t> TransformationAddTypeInt::GetFreshIds() const { |
| return {message_.fresh_id()}; |
| } |
| |
| } // namespace fuzz |
| } // namespace spvtools |