llvm/llvm/lib/CodeGen/CalcSpillWeights.cpp

//===- CalcSpillWeights.cpp -----------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

#include "llvm/CodeGen/CalcSpillWeights.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/CodeGen/LiveInterval.h"
#include "llvm/CodeGen/LiveIntervals.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/StackMaps.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/CodeGen/VirtRegMap.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <tuple>

usingnamespacellvm;

#define DEBUG_TYPE …

void VirtRegAuxInfo::calculateSpillWeightsAndHints() { … }

// Return the preferred allocation register for reg, given a COPY instruction.
Register VirtRegAuxInfo::copyHint(const MachineInstr *MI, unsigned Reg,
                                  const TargetRegisterInfo &TRI,
                                  const MachineRegisterInfo &MRI) { … }

// Check if all values in LI are rematerializable
bool VirtRegAuxInfo::isRematerializable(const LiveInterval &LI,
                                        const LiveIntervals &LIS,
                                        const VirtRegMap &VRM,
                                        const TargetInstrInfo &TII) { … }

bool VirtRegAuxInfo::isLiveAtStatepointVarArg(LiveInterval &LI) { … }

void VirtRegAuxInfo::calculateSpillWeightAndHint(LiveInterval &LI) { … }

static bool canMemFoldInlineAsm(LiveInterval &LI,
                                const MachineRegisterInfo &MRI) { … }

float VirtRegAuxInfo::weightCalcHelper(LiveInterval &LI, SlotIndex *Start,
                                       SlotIndex *End) { … }