forked from OSchip/llvm-project
46 lines
1.8 KiB
C++
46 lines
1.8 KiB
C++
//===-- VPLoopInfo.h --------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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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