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// Copyright (c) 2020 André Perez Maselco
//
// 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_make_vector_operation_dynamic.h"
#include "source/fuzz/fuzzer_util.h"
#include "source/fuzz/instruction_descriptor.h"
namespace spvtools {
namespace fuzz {
TransformationMakeVectorOperationDynamic::
TransformationMakeVectorOperationDynamic(
protobufs::TransformationMakeVectorOperationDynamic message)
: message_(std::move(message)) {}
TransformationMakeVectorOperationDynamic::
TransformationMakeVectorOperationDynamic(uint32_t instruction_result_id,
uint32_t constant_index_id) {
message_.set_instruction_result_id(instruction_result_id);
message_.set_constant_index_id(constant_index_id);
}
bool TransformationMakeVectorOperationDynamic::IsApplicable(
opt::IRContext* ir_context, const TransformationContext& /*unused*/) const {
// |instruction| must be a vector operation.
auto instruction =
ir_context->get_def_use_mgr()->GetDef(message_.instruction_result_id());
if (!IsVectorOperation(ir_context, instruction)) {
return false;
}
// |constant_index_instruction| must be defined as an integer instruction.
auto constant_index_instruction =
ir_context->get_def_use_mgr()->GetDef(message_.constant_index_id());
if (!constant_index_instruction || !constant_index_instruction->type_id() ||
!ir_context->get_type_mgr()
->GetType(constant_index_instruction->type_id())
->AsInteger()) {
return false;
}
return true;
}
void TransformationMakeVectorOperationDynamic::Apply(
opt::IRContext* ir_context, TransformationContext* /*unused*/) const {
auto instruction =
ir_context->get_def_use_mgr()->GetDef(message_.instruction_result_id());
// The OpVectorInsertDynamic instruction has the vector and component operands
// in reverse order in relation to the OpCompositeInsert corresponding
// operands.
if (instruction->opcode() == spv::Op::OpCompositeInsert) {
std::swap(instruction->GetInOperand(0), instruction->GetInOperand(1));
}
// Sets the literal operand to the equivalent constant.
instruction->SetInOperand(
instruction->opcode() == spv::Op::OpCompositeExtract ? 1 : 2,
{message_.constant_index_id()});
// Sets the |instruction| opcode to the corresponding vector dynamic opcode.
instruction->SetOpcode(instruction->opcode() == spv::Op::OpCompositeExtract
? spv::Op::OpVectorExtractDynamic
: spv::Op::OpVectorInsertDynamic);
}
protobufs::Transformation TransformationMakeVectorOperationDynamic::ToMessage()
const {
protobufs::Transformation result;
*result.mutable_make_vector_operation_dynamic() = message_;
return result;
}
bool TransformationMakeVectorOperationDynamic::IsVectorOperation(
opt::IRContext* ir_context, opt::Instruction* instruction) {
// |instruction| must be defined and must be an OpCompositeExtract/Insert
// instruction.
if (!instruction || (instruction->opcode() != spv::Op::OpCompositeExtract &&
instruction->opcode() != spv::Op::OpCompositeInsert)) {
return false;
}
// The composite must be a vector.
auto composite_instruction =
ir_context->get_def_use_mgr()->GetDef(instruction->GetSingleWordInOperand(
instruction->opcode() == spv::Op::OpCompositeExtract ? 0 : 1));
if (!ir_context->get_type_mgr()
->GetType(composite_instruction->type_id())
->AsVector()) {
return false;
}
return true;
}
std::unordered_set<uint32_t>
TransformationMakeVectorOperationDynamic::GetFreshIds() const {
return std::unordered_set<uint32_t>();
}
} // namespace fuzz
} // namespace spvtools
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