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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
45 lines
1.8 KiB
C++
45 lines
1.8 KiB
C++
//===-- VPLoopInfo.h --------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// This file defines VPLoopInfo analysis and VPLoop class. VPLoopInfo is a
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/// specialization of LoopInfoBase for VPBlockBase. VPLoops is a specialization
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/// of LoopBase that is used to hold loop metadata from VPLoopInfo. Further
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/// information can be found in VectorizationPlanner.rst.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_VECTORIZE_VPLOOPINFO_H
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#define LLVM_TRANSFORMS_VECTORIZE_VPLOOPINFO_H
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#include "llvm/Analysis/LoopInfoImpl.h"
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namespace llvm {
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class VPBlockBase;
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/// Hold analysis information for every loop detected by VPLoopInfo. It is an
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/// instantiation of LoopBase.
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class VPLoop : public LoopBase<VPBlockBase, VPLoop> {
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private:
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friend class LoopInfoBase<VPBlockBase, VPLoop>;
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explicit VPLoop(VPBlockBase *VPB) : LoopBase<VPBlockBase, VPLoop>(VPB) {}
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};
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/// VPLoopInfo provides analysis of natural loop for VPBlockBase-based
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/// Hierarchical CFG. It is a specialization of LoopInfoBase class.
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// TODO: VPLoopInfo is initially computed on top of the VPlan plain CFG, which
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// is the same as the incoming IR CFG. If it's more efficient than running the
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// whole loop detection algorithm, we may want to create a mechanism to
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// translate LoopInfo into VPLoopInfo. However, that would require significant
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// changes in LoopInfoBase class.
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typedef LoopInfoBase<VPBlockBase, VPLoop> VPLoopInfo;
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} // namespace llvm
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#endif // LLVM_TRANSFORMS_VECTORIZE_VPLOOPINFO_H
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