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https://github.com/KhronosGroup/SPIRV-Tools
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47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
// Copyright (c) 2018 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_REDUCTION_OPPORTUNITY_H_
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#define SOURCE_REDUCE_REDUCTION_OPPORTUNITY_H_
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#include "spirv-tools/libspirv.hpp"
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namespace spvtools {
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namespace reduce {
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// Abstract class capturing an opportunity to apply a reducing transformation.
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class ReductionOpportunity {
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public:
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ReductionOpportunity() = default;
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virtual ~ReductionOpportunity() = default;
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// Determines whether the opportunity can be applied; it may have been viable
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// when discovered but later disabled by the application of some other
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// reduction opportunity.
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virtual bool PreconditionHolds() = 0;
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// A no-op if PreconditoinHolds() returns false; otherwise applies the
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// opportunity.
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void TryToApply();
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protected:
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// Apply the reduction opportunity.
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virtual void Apply() = 0;
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};
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} // namespace reduce
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} // namespace spvtools
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#endif // SOURCE_REDUCE_REDUCTION_OPPORTUNITY_H_
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