mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-12-13 12:10:09 +00:00
d35a78db57
Fixes #4960 * Switches to using enum classes with an underlying type to avoid undefined behaviour
102 lines
3.5 KiB
C++
102 lines
3.5 KiB
C++
// 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_constant_scalar.h"
|
|
|
|
#include "source/fuzz/fuzzer_util.h"
|
|
|
|
namespace spvtools {
|
|
namespace fuzz {
|
|
|
|
TransformationAddConstantScalar::TransformationAddConstantScalar(
|
|
spvtools::fuzz::protobufs::TransformationAddConstantScalar message)
|
|
: message_(std::move(message)) {}
|
|
|
|
TransformationAddConstantScalar::TransformationAddConstantScalar(
|
|
uint32_t fresh_id, uint32_t type_id, const std::vector<uint32_t>& words,
|
|
bool is_irrelevant) {
|
|
message_.set_fresh_id(fresh_id);
|
|
message_.set_type_id(type_id);
|
|
message_.set_is_irrelevant(is_irrelevant);
|
|
for (auto word : words) {
|
|
message_.add_word(word);
|
|
}
|
|
}
|
|
|
|
bool TransformationAddConstantScalar::IsApplicable(
|
|
opt::IRContext* ir_context, const TransformationContext& /*unused*/) const {
|
|
// The id needs to be fresh.
|
|
if (!fuzzerutil::IsFreshId(ir_context, message_.fresh_id())) {
|
|
return false;
|
|
}
|
|
// The type id for the scalar must exist and be a type.
|
|
auto type = ir_context->get_type_mgr()->GetType(message_.type_id());
|
|
if (!type) {
|
|
return false;
|
|
}
|
|
uint32_t width;
|
|
if (type->AsFloat()) {
|
|
width = type->AsFloat()->width();
|
|
} else if (type->AsInteger()) {
|
|
width = type->AsInteger()->width();
|
|
} else {
|
|
return false;
|
|
}
|
|
// The number of words is the integer floor of the width.
|
|
auto words = (width + 32 - 1) / 32;
|
|
|
|
// The number of words provided by the transformation needs to match the
|
|
// width of the type.
|
|
return static_cast<uint32_t>(message_.word().size()) == words;
|
|
}
|
|
|
|
void TransformationAddConstantScalar::Apply(
|
|
opt::IRContext* ir_context,
|
|
TransformationContext* transformation_context) const {
|
|
auto new_instruction = MakeUnique<opt::Instruction>(
|
|
ir_context, spv::Op::OpConstant, message_.type_id(), message_.fresh_id(),
|
|
opt::Instruction::OperandList(
|
|
{{SPV_OPERAND_TYPE_LITERAL_INTEGER,
|
|
std::vector<uint32_t>(message_.word().begin(),
|
|
message_.word().end())}}));
|
|
auto new_instruction_ptr = new_instruction.get();
|
|
ir_context->module()->AddGlobalValue(std::move(new_instruction));
|
|
|
|
fuzzerutil::UpdateModuleIdBound(ir_context, message_.fresh_id());
|
|
|
|
// Inform the def-use manager about the new instruction. Invalidate the
|
|
// constant manager as we have added a new constant.
|
|
ir_context->get_def_use_mgr()->AnalyzeInstDef(new_instruction_ptr);
|
|
ir_context->InvalidateAnalyses(opt::IRContext::kAnalysisConstants);
|
|
|
|
if (message_.is_irrelevant()) {
|
|
transformation_context->GetFactManager()->AddFactIdIsIrrelevant(
|
|
message_.fresh_id());
|
|
}
|
|
}
|
|
|
|
protobufs::Transformation TransformationAddConstantScalar::ToMessage() const {
|
|
protobufs::Transformation result;
|
|
*result.mutable_add_constant_scalar() = message_;
|
|
return result;
|
|
}
|
|
|
|
std::unordered_set<uint32_t> TransformationAddConstantScalar::GetFreshIds()
|
|
const {
|
|
return {message_.fresh_id()};
|
|
}
|
|
|
|
} // namespace fuzz
|
|
} // namespace spvtools
|