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71aa48f91d
* Add OperandToUndefReductionPass. Fixes #2115. Also added some tests that are similar to those in OperandToConstantReductionPassTest. In addition, refactor FindOrCreateGlobalUndef into reduction_util.cpp. Fixes #2184. Removed many documentation comments that were identical or very similar to the overridden function's documentation comment.
48 lines
1.5 KiB
C++
48 lines
1.5 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: 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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// Returns true if this opportunity has not been disabled by the application
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// of another conflicting opportunity.
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virtual bool PreconditionHolds() = 0;
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// Applies the opportunity, mutating the module from which the opportunity was
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// created. It is a no-op if PreconditionHolds() returns false.
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void TryToApply();
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protected:
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// Applies the opportunity, mutating the module from which the opportunity was
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// created.
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// Precondition: PreconditionHolds() must return true.
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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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