58 lines · cpp
1//===- MachineFunctionAnalysis.cpp ----------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8//9// This file contains the definitions of the MachineFunctionAnalysis10// members.11//12//===----------------------------------------------------------------------===//13 14#include "llvm/CodeGen/MachineFunctionAnalysis.h"15#include "llvm/CodeGen/MachineFunction.h"16#include "llvm/CodeGen/MachineModuleInfo.h"17#include "llvm/IR/Function.h"18#include "llvm/Target/TargetMachine.h"19 20using namespace llvm;21 22AnalysisKey MachineFunctionAnalysis::Key;23 24llvm::MachineFunctionAnalysis::Result::Result(25 std::unique_ptr<MachineFunction> MF)26 : MF(std::move(MF)) {}27 28bool MachineFunctionAnalysis::Result::invalidate(29 Function &, const PreservedAnalyses &PA,30 FunctionAnalysisManager::Invalidator &) {31 // Unless it is invalidated explicitly, it should remain preserved.32 auto PAC = PA.getChecker<MachineFunctionAnalysis>();33 return !PAC.preservedWhenStateless();34}35 36MachineFunctionAnalysis::Result37MachineFunctionAnalysis::run(Function &F, FunctionAnalysisManager &FAM) {38 auto &Context = F.getContext();39 const TargetSubtargetInfo &STI = *TM->getSubtargetImpl(F);40 auto &MMI = FAM.getResult<ModuleAnalysisManagerFunctionProxy>(F)41 .getCachedResult<MachineModuleAnalysis>(*F.getParent())42 ->getMMI();43 auto MF = std::make_unique<MachineFunction>(44 F, *TM, STI, MMI.getContext(), Context.generateMachineFunctionNum(F));45 MF->initTargetMachineFunctionInfo(STI);46 47 // MRI callback for target specific initializations.48 TM->registerMachineRegisterInfoCallback(*MF);49 50 return Result(std::move(MF));51}52 53PreservedAnalyses FreeMachineFunctionPass::run(Function &F,54 FunctionAnalysisManager &FAM) {55 FAM.clearAnalysis<MachineFunctionAnalysis>(F);56 return PreservedAnalyses::all();57}58