1 //===- LoopIdiomRecognize.h - Loop Idiom Recognize Pass ---------*- C++ -*-===// 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 // This pass implements an idiom recognizer that transforms simple loops into a 10 // non-loop form. In cases that this kicks in, it can be a significant 11 // performance win. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H 16 #define LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H 17 18 #include "llvm/Analysis/LoopAnalysisManager.h" 19 #include "llvm/IR/PassManager.h" 20 21 namespace llvm { 22 23 class Loop; 24 class LPMUpdater; 25 26 /// Options to disable Loop Idiom Recognize, which can be shared with other 27 /// passes. 28 struct DisableLIRP { 29 /// When true, the entire pass is disabled. 30 static bool All; 31 32 /// When true, Memset is disabled. 33 static bool Memset; 34 35 /// When true, Memcpy is disabled. 36 static bool Memcpy; 37 }; 38 39 /// Performs Loop Idiom Recognize Pass. 40 class LoopIdiomRecognizePass : public PassInfoMixin<LoopIdiomRecognizePass> { 41 public: 42 PreservedAnalyses run(Loop &L, LoopAnalysisManager &AM, 43 LoopStandardAnalysisResults &AR, LPMUpdater &U); 44 }; 45 46 } // end namespace llvm 47 48 #endif // LLVM_TRANSFORMS_SCALAR_LOOPIDIOMRECOGNIZE_H 49