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-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file contains the definitions of the MachineFunctionAnalysis
10 // 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
20 using namespace llvm;
21
22 AnalysisKey MachineFunctionAnalysis::Key;
23
invalidate(Function &,const PreservedAnalyses & PA,FunctionAnalysisManager::Invalidator &)24 bool MachineFunctionAnalysis::Result::invalidate(
25 Function &, const PreservedAnalyses &PA,
26 FunctionAnalysisManager::Invalidator &) {
27 // Unless it is invalidated explicitly, it should remain preserved.
28 auto PAC = PA.getChecker<MachineFunctionAnalysis>();
29 return !PAC.preservedWhenStateless();
30 }
31
32 MachineFunctionAnalysis::Result
run(Function & F,FunctionAnalysisManager & FAM)33 MachineFunctionAnalysis::run(Function &F, FunctionAnalysisManager &FAM) {
34 auto &Context = F.getContext();
35 const TargetSubtargetInfo &STI = *TM->getSubtargetImpl(F);
36 auto &MMI = FAM.getResult<ModuleAnalysisManagerFunctionProxy>(F)
37 .getCachedResult<MachineModuleAnalysis>(*F.getParent())
38 ->getMMI();
39 auto MF = std::make_unique<MachineFunction>(
40 F, *TM, STI, Context.generateMachineFunctionNum(F), MMI);
41 MF->initTargetMachineFunctionInfo(STI);
42
43 // MRI callback for target specific initializations.
44 TM->registerMachineRegisterInfoCallback(*MF);
45
46 return Result(std::move(MF));
47 }
48