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https://github.com/KhronosGroup/SPIRV-Tools
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48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
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// Copyright (c) 2019 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SOURCE_REDUCE_REMOVE_SELECTION_REDUCTION_OPPORTUNITY_H_
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#define SOURCE_REDUCE_REMOVE_SELECTION_REDUCTION_OPPORTUNITY_H_
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#include "source/opt/basic_block.h"
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#include "source/reduce/reduction_opportunity.h"
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namespace spvtools {
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namespace reduce {
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// An opportunity for removing a selection construct by simply removing the
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// OpSelectionMerge instruction; thus, the selection must have already been
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// simplified to a point where the instruction can be trivially removed.
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class RemoveSelectionReductionOpportunity : public ReductionOpportunity {
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public:
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// Constructs a reduction opportunity from the selection header |block| in
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// |function|.
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RemoveSelectionReductionOpportunity(opt::BasicBlock* header_block)
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: header_block_(header_block) {}
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bool PreconditionHolds() override;
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protected:
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void Apply() override;
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private:
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// The header block of the selection.
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opt::BasicBlock* header_block_;
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};
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} // namespace reduce
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} // namespace spvtools
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#endif // SOURCE_REDUCE_REMOVE_SELECTION_REDUCTION_OPPORTUNITY_H_
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