1// Copyright (c) 2018 Google LLC.
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_LOOP_UNROLLER_H_
16#define SOURCE_OPT_LOOP_UNROLLER_H_
17
18#include "source/opt/pass.h"
19
20namespace spvtools {
21namespace opt {
22
23class LoopUnroller : public Pass {
24 public:
25 LoopUnroller() : Pass(), fully_unroll_(true), unroll_factor_(0) {}
26 LoopUnroller(bool fully_unroll, int unroll_factor)
27 : Pass(), fully_unroll_(fully_unroll), unroll_factor_(unroll_factor) {}
28
29 const char* name() const override { return "loop-unroll"; }
30
31 Status Process() override;
32
33 IRContext::Analysis GetPreservedAnalyses() override {
34 return IRContext::kAnalysisDefUse |
35 IRContext::kAnalysisInstrToBlockMapping |
36 IRContext::kAnalysisDecorations | IRContext::kAnalysisCombinators |
37 IRContext::kAnalysisNameMap | IRContext::kAnalysisConstants |
38 IRContext::kAnalysisTypes;
39 }
40
41 private:
42 bool fully_unroll_;
43 int unroll_factor_;
44};
45
46} // namespace opt
47} // namespace spvtools
48
49#endif // SOURCE_OPT_LOOP_UNROLLER_H_
50