45 lines
1.8 KiB
C
45 lines
1.8 KiB
C
|
//===-- 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
|