llvm/llvm/lib/CodeGen/AllocationOrder.cpp

//===-- llvm/CodeGen/AllocationOrder.cpp - Allocation Order ---------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements an allocation order for virtual registers.
//
// The preferred allocation order for a virtual register depends on allocation
// hints and target hooks. The AllocationOrder class encapsulates all of that.
//
//===----------------------------------------------------------------------===//

#include "AllocationOrder.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RegisterClassInfo.h"
#include "llvm/CodeGen/VirtRegMap.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"

usingnamespacellvm;

#define DEBUG_TYPE …

// Compare VirtRegMap::getRegAllocPref().
AllocationOrder AllocationOrder::create(unsigned VirtReg, const VirtRegMap &VRM,
                                        const RegisterClassInfo &RegClassInfo,
                                        const LiveRegMatrix *Matrix) { … }