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 | #include "llvm/Transforms/Utils/ValueMapper.h" |
19 | |
20 | namespace llvm { |
21 | |
22 | bool canPeel(const Loop *L); |
23 | |
24 | /// VMap is the value-map that maps instructions from the original loop to |
25 | /// instructions in the last peeled-off iteration. |
26 | bool peelLoop(Loop *L, unsigned PeelCount, LoopInfo *LI, ScalarEvolution *SE, |
27 | DominatorTree &DT, AssumptionCache *AC, bool PreserveLCSSA, |
28 | ValueToValueMapTy &VMap); |
29 | |
30 | TargetTransformInfo::PeelingPreferences |
31 | gatherPeelingPreferences(Loop *L, ScalarEvolution &SE, |
32 | const TargetTransformInfo &TTI, |
33 | std::optional<bool> UserAllowPeeling, |
34 | std::optional<bool> UserAllowProfileBasedPeeling, |
35 | bool UnrollingSpecficValues = false); |
36 | |
37 | void computePeelCount(Loop *L, unsigned LoopSize, |
38 | TargetTransformInfo::PeelingPreferences &PP, |
39 | unsigned TripCount, DominatorTree &DT, |
40 | ScalarEvolution &SE, AssumptionCache *AC = nullptr, |
41 | unsigned Threshold = UINT_MAX); |
42 | |
43 | } // end namespace llvm |
44 | |
45 | #endif // LLVM_TRANSFORMS_UTILS_LOOPPEEL_H |
46 | |