1// Copyright (c) 2017 Google Inc.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15#ifndef SOURCE_OPT_ELIMINATE_DEAD_FUNCTIONS_PASS_H_
16#define SOURCE_OPT_ELIMINATE_DEAD_FUNCTIONS_PASS_H_
17
18#include "source/opt/def_use_manager.h"
19#include "source/opt/function.h"
20#include "source/opt/mem_pass.h"
21#include "source/opt/module.h"
22
23namespace spvtools {
24namespace opt {
25
26// See optimizer.hpp for documentation.
27class EliminateDeadFunctionsPass : public MemPass {
28 public:
29 const char* name() const override { return "eliminate-dead-functions"; }
30 Status Process() override;
31
32 IRContext::Analysis GetPreservedAnalyses() override {
33 return IRContext::kAnalysisDefUse | IRContext::kAnalysisConstants |
34 IRContext::kAnalysisTypes;
35 }
36
37 private:
38 void EliminateFunction(Function* func);
39};
40
41} // namespace opt
42} // namespace spvtools
43
44#endif // SOURCE_OPT_ELIMINATE_DEAD_FUNCTIONS_PASS_H_
45