llvm/lib/CodeGen/RegAllocPriorityAdvisor.cpp

   1 //===- RegAllocPriorityAdvisor.cpp - live ranges priority advisor ---------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // Implementation of the default priority advisor and of the Analysis pass.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "RegAllocPriorityAdvisor.h"
  14 #include "RegAllocGreedy.h"
  15 #include "llvm/CodeGen/MachineFunction.h"
  16 #include "llvm/CodeGen/VirtRegMap.h"
  17 #include "llvm/InitializePasses.h"
  18 #include "llvm/Pass.h"
  19
  20 using namespace llvm;
  21
  22 RegAllocPriorityAdvisor::RegAllocPriorityAdvisor(const MachineFunction &MF,
  23                                                  const RAGreedy &RA)
  24     : RA(RA), LIS(RA.getLiveIntervals()), VRM(RA.getVirtRegMap()),
  25       MRI(&VRM->getRegInfo()), TRI(MF.getSubtarget().getRegisterInfo()),
  26       RegClassInfo(RA.getRegClassInfo()), Indexes(RA.getIndexes()),
  27       RegClassPriorityTrumpsGlobalness(
  28           RA.getRegClassPriorityTrumpsGlobalness()),
  29       ReverseLocalAssignment(RA.getReverseLocalAssignment()) {}