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// Copyright (c) 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef LIBSPIRV_OPT_SIMPLIFICATION_PASS_H_
#define LIBSPIRV_OPT_SIMPLIFICATION_PASS_H_
#include "function.h"
#include "ir_context.h"
#include "pass.h"
namespace spvtools {
namespace opt {
// See optimizer.hpp for documentation.
class SimplificationPass : public Pass {
public:
const char* name() const override { return "simplify-instructions"; }
Status Process() override;
opt::IRContext::Analysis GetPreservedAnalyses() override {
return opt::IRContext::kAnalysisDefUse |
opt::IRContext::kAnalysisInstrToBlockMapping |
opt::IRContext::kAnalysisDecorations |
opt::IRContext::kAnalysisCombinators | opt::IRContext::kAnalysisCFG |
opt::IRContext::kAnalysisDominatorAnalysis |
opt::IRContext::kAnalysisNameMap;
}
private:
// Returns true if the module was changed. The simplifier is called on every
// instruction in |function| until nothing else in the function can be
// simplified.
bool SimplifyFunction(opt::Function* function);
};
} // namespace opt
} // namespace spvtools
#endif // LIBSPIRV_OPT_SIMPLIFICATION_PASS_H_
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