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https://github.com/KhronosGroup/SPIRV-Tools
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4aeadc0199
Add a spirv-reduce pass which removes OpName and OpMemberName instructions. This is useful to enable other reduction passes, e.g. RemoveUnreferencedInstruction may not be able to remove an instruction creating an id whose only usage is an OpName for this id.
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_OPNAME_INSTRUCTION_REDUCTION_PASS_H_
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#define SOURCE_REDUCE_REMOVE_OPNAME_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 OpName instructions. As well as making the
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// module smaller, removing an OpName instruction may create opportunities to
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// remove the instruction that create the id to which the OpName applies.
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class RemoveOpNameInstructionReductionPass : 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 RemoveOpNameInstructionReductionPass(const spv_target_env target_env)
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: ReductionPass(target_env) {}
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~RemoveOpNameInstructionReductionPass() override = default;
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// The name of this pass.
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std::string GetName() const final;
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protected:
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// Finds all opportunities for removing opName instructions in the
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// given module.
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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_OpName_INSTRUCTION_REDUCTION_PASS_H_
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