mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-24 12:30:13 +00:00
50 lines
1.9 KiB
C++
50 lines
1.9 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.
|
|
|
|
#ifndef SOURCE_REDUCE_REMOVE_SELECTION_REDUCTION_OPPORTUNITY_FINDER_H_
|
|
#define SOURCE_REDUCE_REMOVE_SELECTION_REDUCTION_OPPORTUNITY_FINDER_H_
|
|
|
|
#include "source/reduce/reduction_opportunity_finder.h"
|
|
|
|
namespace spvtools {
|
|
namespace reduce {
|
|
|
|
// A finder for opportunities for removing a selection construct by simply
|
|
// removing the OpSelectionMerge instruction; thus, the selections must have
|
|
// already been simplified to a point where they can be trivially removed.
|
|
class RemoveSelectionReductionOpportunityFinder
|
|
: public ReductionOpportunityFinder {
|
|
public:
|
|
RemoveSelectionReductionOpportunityFinder() = default;
|
|
|
|
~RemoveSelectionReductionOpportunityFinder() override = default;
|
|
|
|
std::string GetName() const final;
|
|
|
|
std::vector<std::unique_ptr<ReductionOpportunity>> GetAvailableOpportunities(
|
|
opt::IRContext* context) const final;
|
|
|
|
// Returns true if the OpSelectionMerge instruction |merge_instruction| in
|
|
// block |header_block| can be removed.
|
|
static bool CanOpSelectionMergeBeRemoved(
|
|
opt::IRContext* context, const opt::BasicBlock& header_block,
|
|
opt::Instruction* merge_instruction,
|
|
std::unordered_set<uint32_t> merge_and_continue_blocks_from_loops);
|
|
};
|
|
|
|
} // namespace reduce
|
|
} // namespace spvtools
|
|
|
|
#endif // SOURCE_REDUCE_REMOVE_SELECTION_REDUCTION_OPPORTUNITY_FINDER_H_
|