| //===-- VPLoopInfo.h --------------------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// This file defines VPLoopInfo analysis and VPLoop class. VPLoopInfo is a |
| /// specialization of LoopInfoBase for VPBlockBase. VPLoops is a specialization |
| /// of LoopBase that is used to hold loop metadata from VPLoopInfo. Further |
| /// information can be found in VectorizationPlanner.rst. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_TRANSFORMS_VECTORIZE_VPLOOPINFO_H |
| #define LLVM_TRANSFORMS_VECTORIZE_VPLOOPINFO_H |
| |
| #include "llvm/Analysis/LoopInfoImpl.h" |
| |
| namespace llvm { |
| class VPBlockBase; |
| |
| /// Hold analysis information for every loop detected by VPLoopInfo. It is an |
| /// instantiation of LoopBase. |
| class VPLoop : public LoopBase<VPBlockBase, VPLoop> { |
| private: |
| friend class LoopInfoBase<VPBlockBase, VPLoop>; |
| explicit VPLoop(VPBlockBase *VPB) : LoopBase<VPBlockBase, VPLoop>(VPB) {} |
| }; |
| |
| /// VPLoopInfo provides analysis of natural loop for VPBlockBase-based |
| /// Hierarchical CFG. It is a specialization of LoopInfoBase class. |
| // TODO: VPLoopInfo is initially computed on top of the VPlan plain CFG, which |
| // is the same as the incoming IR CFG. If it's more efficient than running the |
| // whole loop detection algorithm, we may want to create a mechanism to |
| // translate LoopInfo into VPLoopInfo. However, that would require significant |
| // changes in LoopInfoBase class. |
| typedef LoopInfoBase<VPBlockBase, VPLoop> VPLoopInfo; |
| |
| } // namespace llvm |
| |
| #endif // LLVM_TRANSFORMS_VECTORIZE_VPLOOPINFO_H |