1 //===- llvm/Transforms/Utils/LoopPeel.h ----- Peeling utilities -*- 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 file defines some loop peeling utilities. It does not define any 10 // actual pass or policy. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_TRANSFORMS_UTILS_LOOPPEEL_H 15 #define LLVM_TRANSFORMS_UTILS_LOOPPEEL_H 16 17 #include "llvm/Analysis/TargetTransformInfo.h" 18 19 namespace llvm { 20 21 bool canPeel(Loop *L); 22 23 bool peelLoop(Loop *L, unsigned PeelCount, LoopInfo *LI, ScalarEvolution *SE, 24 DominatorTree &DT, AssumptionCache *AC, bool PreserveLCSSA); 25 26 TargetTransformInfo::PeelingPreferences 27 gatherPeelingPreferences(Loop *L, ScalarEvolution &SE, 28 const TargetTransformInfo &TTI, 29 Optional<bool> UserAllowPeeling, 30 Optional<bool> UserAllowProfileBasedPeeling, 31 bool UnrollingSpecficValues = false); 32 33 void computePeelCount(Loop *L, unsigned LoopSize, 34 TargetTransformInfo::PeelingPreferences &PP, 35 unsigned TripCount, DominatorTree &DT, 36 ScalarEvolution &SE, unsigned Threshold = UINT_MAX); 37 38 } // end namespace llvm 39 40 #endif // LLVM_TRANSFORMS_UTILS_LOOPPEEL_H 41