SPIRV-Tools/source/fuzz/fact_manager/dead_block_facts.h

54 lines
1.7 KiB
C
Raw Normal View History

// 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.
#ifndef SOURCE_FUZZ_FACT_MANAGER_DEAD_BLOCK_FACTS_H_
#define SOURCE_FUZZ_FACT_MANAGER_DEAD_BLOCK_FACTS_H_
#include <unordered_set>
#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
#include "source/opt/ir_context.h"
namespace spvtools {
namespace fuzz {
namespace fact_manager {
// The purpose of this class is to group the fields and data used to represent
// facts about data blocks.
class DeadBlockFacts {
public:
explicit DeadBlockFacts(opt::IRContext* ir_context);
// Marks |fact.block_id()| as being dead. Returns true if |fact.block_id()|
// represents a result id of some OpLabel instruction in |ir_context_|.
// Returns false otherwise.
bool MaybeAddFact(const protobufs::FactBlockIsDead& fact);
// See method in FactManager which delegates to this method.
bool BlockIsDead(uint32_t block_id) const;
// Returns a set of all the block ids that have been declared dead.
const std::unordered_set<uint32_t>& GetDeadBlocks() const;
private:
std::unordered_set<uint32_t> dead_block_ids_;
opt::IRContext* ir_context_;
};
} // namespace fact_manager
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_FACT_MANAGER_DEAD_BLOCK_FACTS_H_