Fixed move constructor of MMI to move MachineFunctions map

[sridhar_gopinath]

Summary

The move constructor of MachineModuleInfo currently does not copy the MachineFunctions map. This commit fixes this issue.

[bogner]

LGTM. Do you need me to commit this for you?

llvm/lib/CodeGen/MachineModuleInfo.cpp

 //===-- llvm/CodeGen/MachineModuleInfo.cpp ----------------------*- C++ -*-===//
 //
 // 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
 //
 //===----------------------------------------------------------------------===//
 
void MachineModuleInfo::finalize() {
 
   delete ObjFileMMI;
   ObjFileMMI = nullptr;
 }
 
 MachineModuleInfo::MachineModuleInfo(MachineModuleInfo &&MMI)
     : TM(std::move(MMI.TM)),
       Context(MMI.TM.getMCAsmInfo(), MMI.TM.getMCRegisterInfo(),
-              MMI.TM.getObjFileLowering(), nullptr, nullptr, false) {
+              MMI.TM.getObjFileLowering(), nullptr, nullptr, false),
+      MachineFunctions(std::move(MMI.MachineFunctions)) {
   ObjFileMMI = MMI.ObjFileMMI;
   CurCallSite = MMI.CurCallSite;
   UsesMSVCFloatingPoint = MMI.UsesMSVCFloatingPoint;
   UsesMorestackAddr = MMI.UsesMorestackAddr;
   HasSplitStack = MMI.HasSplitStack;
   HasNosplitStack = MMI.HasNosplitStack;
   AddrLabelSymbols = MMI.AddrLabelSymbols;
   TheModule = MMI.TheModule;