1 //===- LoopIdiomRecognize.h - Loop Idiom Recognize Pass ---------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This pass implements an idiom recognizer that transforms simple loops into a
11 // non-loop form.  In cases that this kicks in, it can be a significant
12 // performance win.
13 //
14 //===----------------------------------------------------------------------===//
15 
16 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H
17 #define LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H
18 
19 #include "llvm/Analysis/LoopAnalysisManager.h"
20 #include "llvm/IR/PassManager.h"
21 
22 namespace llvm {
23 
24 class Loop;
25 class LPMUpdater;
26 
27 /// Performs Loop Idiom Recognize Pass.
28 class LoopIdiomRecognizePass : public PassInfoMixin<LoopIdiomRecognizePass> {
29 public:
30   PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM,
31                         LoopStandardAnalysisResults &AR, LPMUpdater &U);
32 };
33 
34 } // end namespace llvm
35 
36 #endif // LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H
37