1 //===- LoopExtractor.h - Extract each loop into a new function ------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // A pass wrapper around the ExtractLoop() scalar transformation to extract each
10 // top-level loop into its own new function. If the loop is the ONLY loop in a
11 // given function, it is not touched. This is a pass most useful for debugging
12 // via bugpoint.
13 //
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_TRANSFORMS_IPO_LOOPEXTRACTOR_H
17 #define LLVM_TRANSFORMS_IPO_LOOPEXTRACTOR_H
18 
19 #include "llvm/IR/PassManager.h"
20 
21 namespace llvm {
22 
23 struct LoopExtractorPass : public PassInfoMixin<LoopExtractorPass> {
24   LoopExtractorPass(unsigned NumLoops = ~0) : NumLoops(NumLoops) {}
25   PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
26   void printPipeline(raw_ostream &OS,
27                      function_ref<StringRef(StringRef)> MapClassName2PassName);
28 
29 private:
30   unsigned NumLoops;
31 };
32 } // namespace llvm
33 
34 #endif // LLVM_TRANSFORMS_IPO_LOOPEXTRACTOR_H
35