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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.
51 lines
1.8 KiB
C++
51 lines
1.8 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_REMOVE_UNREFERENCED_INSTRUCTION_REDUCTION_PASS_H_
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#define SOURCE_REDUCE_REMOVE_UNREFERENCED_INSTRUCTION_REDUCTION_PASS_H_
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#include "reduction_pass.h"
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namespace spvtools {
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namespace reduce {
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// A reduction pass for removing non-control-flow instructions in blocks in
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// cases where the instruction's id is not referenced. As well as making the
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// module smaller, removing an instruction that references particular ids may
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// create opportunities for subsequently removing the instructions that
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// generated those ids.
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class RemoveUnreferencedInstructionReductionPass : public ReductionPass {
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public:
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// Creates the reduction pass in the context of the given target environment
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// |target_env|
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explicit RemoveUnreferencedInstructionReductionPass(
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const spv_target_env target_env)
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: ReductionPass(target_env) {}
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~RemoveUnreferencedInstructionReductionPass() override = default;
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std::string GetName() const final;
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protected:
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std::vector<std::unique_ptr<ReductionOpportunity>> GetAvailableOpportunities(
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opt::IRContext* context) const final;
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private:
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};
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} // namespace reduce
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} // namespace spvtools
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#endif // SOURCE_REDUCE_REMOVE_UNREFERENCED_INSTRUCTION_REDUCTION_PASS_H_
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