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 
20 namespace spvtools {
21 namespace opt {
22 
23 class LoopUnroller : public Pass {
24  public:
LoopUnroller()25   LoopUnroller() : Pass(), fully_unroll_(true), unroll_factor_(0) {}
LoopUnroller(bool fully_unroll,int unroll_factor)26   LoopUnroller(bool fully_unroll, int unroll_factor)
27       : Pass(), fully_unroll_(fully_unroll), unroll_factor_(unroll_factor) {}
28 
name()29   const char* name() const override { return "loop-unroll"; }
30 
31   Status Process() override;
32 
GetPreservedAnalyses()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