1 //===-- llvm/CodeGen/MachineModuleInfo.cpp ----------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/CodeGen/MachineModuleInfo.h"
11 #include "llvm/ADT/PointerUnion.h"
12 #include "llvm/Analysis/LibCallSemantics.h"
13 #include "llvm/Analysis/ValueTracking.h"
14 #include "llvm/CodeGen/MachineFunction.h"
15 #include "llvm/CodeGen/MachineFunctionPass.h"
16 #include "llvm/CodeGen/Passes.h"
17 #include "llvm/CodeGen/WinEHFuncInfo.h"
18 #include "llvm/IR/Constants.h"
19 #include "llvm/IR/DerivedTypes.h"
20 #include "llvm/IR/GlobalVariable.h"
21 #include "llvm/IR/Module.h"
22 #include "llvm/MC/MCObjectFileInfo.h"
23 #include "llvm/MC/MCSymbol.h"
24 #include "llvm/Support/Dwarf.h"
25 #include "llvm/Support/ErrorHandling.h"
27 using namespace llvm::dwarf;
29 // Handle the Pass registration stuff necessary to use DataLayout's.
30 INITIALIZE_PASS(MachineModuleInfo, "machinemoduleinfo",
31 "Machine Module Information", false, false)
32 char MachineModuleInfo::ID = 0;
34 // Out of line virtual method.
35 MachineModuleInfoImpl::~MachineModuleInfoImpl() {}
38 class MMIAddrLabelMapCallbackPtr : CallbackVH {
41 MMIAddrLabelMapCallbackPtr() : Map(nullptr) {}
42 MMIAddrLabelMapCallbackPtr(Value *V) : CallbackVH(V), Map(nullptr) {}
44 void setPtr(BasicBlock *BB) {
45 ValueHandleBase::operator=(BB);
48 void setMap(MMIAddrLabelMap *map) { Map = map; }
50 void deleted() override;
51 void allUsesReplacedWith(Value *V2) override;
54 class MMIAddrLabelMap {
56 struct AddrLabelSymEntry {
57 /// Symbols - The symbols for the label. This is a pointer union that is
58 /// either one symbol (the common case) or a list of symbols.
59 PointerUnion<MCSymbol *, std::vector<MCSymbol*>*> Symbols;
61 Function *Fn; // The containing function of the BasicBlock.
62 unsigned Index; // The index in BBCallbacks for the BasicBlock.
65 DenseMap<AssertingVH<BasicBlock>, AddrLabelSymEntry> AddrLabelSymbols;
67 /// BBCallbacks - Callbacks for the BasicBlock's that we have entries for. We
68 /// use this so we get notified if a block is deleted or RAUWd.
69 std::vector<MMIAddrLabelMapCallbackPtr> BBCallbacks;
71 /// DeletedAddrLabelsNeedingEmission - This is a per-function list of symbols
72 /// whose corresponding BasicBlock got deleted. These symbols need to be
73 /// emitted at some point in the file, so AsmPrinter emits them after the
75 DenseMap<AssertingVH<Function>, std::vector<MCSymbol*> >
76 DeletedAddrLabelsNeedingEmission;
79 MMIAddrLabelMap(MCContext &context) : Context(context) {}
81 assert(DeletedAddrLabelsNeedingEmission.empty() &&
82 "Some labels for deleted blocks never got emitted");
84 // Deallocate any of the 'list of symbols' case.
85 for (DenseMap<AssertingVH<BasicBlock>, AddrLabelSymEntry>::iterator
86 I = AddrLabelSymbols.begin(), E = AddrLabelSymbols.end(); I != E; ++I)
87 if (I->second.Symbols.is<std::vector<MCSymbol*>*>())
88 delete I->second.Symbols.get<std::vector<MCSymbol*>*>();
91 MCSymbol *getAddrLabelSymbol(BasicBlock *BB);
92 std::vector<MCSymbol*> getAddrLabelSymbolToEmit(BasicBlock *BB);
94 void takeDeletedSymbolsForFunction(Function *F,
95 std::vector<MCSymbol*> &Result);
97 void UpdateForDeletedBlock(BasicBlock *BB);
98 void UpdateForRAUWBlock(BasicBlock *Old, BasicBlock *New);
102 MCSymbol *MMIAddrLabelMap::getAddrLabelSymbol(BasicBlock *BB) {
103 assert(BB->hasAddressTaken() &&
104 "Shouldn't get label for block without address taken");
105 AddrLabelSymEntry &Entry = AddrLabelSymbols[BB];
107 // If we already had an entry for this block, just return it.
108 if (!Entry.Symbols.isNull()) {
109 assert(BB->getParent() == Entry.Fn && "Parent changed");
110 if (Entry.Symbols.is<MCSymbol*>())
111 return Entry.Symbols.get<MCSymbol*>();
112 return (*Entry.Symbols.get<std::vector<MCSymbol*>*>())[0];
115 // Otherwise, this is a new entry, create a new symbol for it and add an
116 // entry to BBCallbacks so we can be notified if the BB is deleted or RAUWd.
117 BBCallbacks.push_back(BB);
118 BBCallbacks.back().setMap(this);
119 Entry.Index = BBCallbacks.size()-1;
120 Entry.Fn = BB->getParent();
121 MCSymbol *Result = Context.createTempSymbol();
122 Entry.Symbols = Result;
126 std::vector<MCSymbol*>
127 MMIAddrLabelMap::getAddrLabelSymbolToEmit(BasicBlock *BB) {
128 assert(BB->hasAddressTaken() &&
129 "Shouldn't get label for block without address taken");
130 AddrLabelSymEntry &Entry = AddrLabelSymbols[BB];
132 std::vector<MCSymbol*> Result;
134 // If we already had an entry for this block, just return it.
135 if (Entry.Symbols.isNull())
136 Result.push_back(getAddrLabelSymbol(BB));
137 else if (MCSymbol *Sym = Entry.Symbols.dyn_cast<MCSymbol*>())
138 Result.push_back(Sym);
140 Result = *Entry.Symbols.get<std::vector<MCSymbol*>*>();
145 /// takeDeletedSymbolsForFunction - If we have any deleted symbols for F, return
147 void MMIAddrLabelMap::
148 takeDeletedSymbolsForFunction(Function *F, std::vector<MCSymbol*> &Result) {
149 DenseMap<AssertingVH<Function>, std::vector<MCSymbol*> >::iterator I =
150 DeletedAddrLabelsNeedingEmission.find(F);
152 // If there are no entries for the function, just return.
153 if (I == DeletedAddrLabelsNeedingEmission.end()) return;
155 // Otherwise, take the list.
156 std::swap(Result, I->second);
157 DeletedAddrLabelsNeedingEmission.erase(I);
161 void MMIAddrLabelMap::UpdateForDeletedBlock(BasicBlock *BB) {
162 // If the block got deleted, there is no need for the symbol. If the symbol
163 // was already emitted, we can just forget about it, otherwise we need to
164 // queue it up for later emission when the function is output.
165 AddrLabelSymEntry Entry = AddrLabelSymbols[BB];
166 AddrLabelSymbols.erase(BB);
167 assert(!Entry.Symbols.isNull() && "Didn't have a symbol, why a callback?");
168 BBCallbacks[Entry.Index] = nullptr; // Clear the callback.
170 assert((BB->getParent() == nullptr || BB->getParent() == Entry.Fn) &&
171 "Block/parent mismatch");
173 // Handle both the single and the multiple symbols cases.
174 if (MCSymbol *Sym = Entry.Symbols.dyn_cast<MCSymbol*>()) {
175 if (Sym->isDefined())
178 // If the block is not yet defined, we need to emit it at the end of the
179 // function. Add the symbol to the DeletedAddrLabelsNeedingEmission list
180 // for the containing Function. Since the block is being deleted, its
181 // parent may already be removed, we have to get the function from 'Entry'.
182 DeletedAddrLabelsNeedingEmission[Entry.Fn].push_back(Sym);
184 std::vector<MCSymbol*> *Syms = Entry.Symbols.get<std::vector<MCSymbol*>*>();
186 for (unsigned i = 0, e = Syms->size(); i != e; ++i) {
187 MCSymbol *Sym = (*Syms)[i];
188 if (Sym->isDefined()) continue; // Ignore already emitted labels.
190 // If the block is not yet defined, we need to emit it at the end of the
191 // function. Add the symbol to the DeletedAddrLabelsNeedingEmission list
192 // for the containing Function. Since the block is being deleted, its
193 // parent may already be removed, we have to get the function from
195 DeletedAddrLabelsNeedingEmission[Entry.Fn].push_back(Sym);
198 // The entry is deleted, free the memory associated with the symbol list.
203 void MMIAddrLabelMap::UpdateForRAUWBlock(BasicBlock *Old, BasicBlock *New) {
204 // Get the entry for the RAUW'd block and remove it from our map.
205 AddrLabelSymEntry OldEntry = AddrLabelSymbols[Old];
206 AddrLabelSymbols.erase(Old);
207 assert(!OldEntry.Symbols.isNull() && "Didn't have a symbol, why a callback?");
209 AddrLabelSymEntry &NewEntry = AddrLabelSymbols[New];
211 // If New is not address taken, just move our symbol over to it.
212 if (NewEntry.Symbols.isNull()) {
213 BBCallbacks[OldEntry.Index].setPtr(New); // Update the callback.
214 NewEntry = OldEntry; // Set New's entry.
218 BBCallbacks[OldEntry.Index] = nullptr; // Update the callback.
220 // Otherwise, we need to add the old symbol to the new block's set. If it is
221 // just a single entry, upgrade it to a symbol list.
222 if (MCSymbol *PrevSym = NewEntry.Symbols.dyn_cast<MCSymbol*>()) {
223 std::vector<MCSymbol*> *SymList = new std::vector<MCSymbol*>();
224 SymList->push_back(PrevSym);
225 NewEntry.Symbols = SymList;
228 std::vector<MCSymbol*> *SymList =
229 NewEntry.Symbols.get<std::vector<MCSymbol*>*>();
231 // If the old entry was a single symbol, add it.
232 if (MCSymbol *Sym = OldEntry.Symbols.dyn_cast<MCSymbol*>()) {
233 SymList->push_back(Sym);
237 // Otherwise, concatenate the list.
238 std::vector<MCSymbol*> *Syms =OldEntry.Symbols.get<std::vector<MCSymbol*>*>();
239 SymList->insert(SymList->end(), Syms->begin(), Syms->end());
244 void MMIAddrLabelMapCallbackPtr::deleted() {
245 Map->UpdateForDeletedBlock(cast<BasicBlock>(getValPtr()));
248 void MMIAddrLabelMapCallbackPtr::allUsesReplacedWith(Value *V2) {
249 Map->UpdateForRAUWBlock(cast<BasicBlock>(getValPtr()), cast<BasicBlock>(V2));
253 //===----------------------------------------------------------------------===//
255 MachineModuleInfo::MachineModuleInfo(const MCAsmInfo &MAI,
256 const MCRegisterInfo &MRI,
257 const MCObjectFileInfo *MOFI)
258 : ImmutablePass(ID), Context(&MAI, &MRI, MOFI, nullptr, false) {
259 initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry());
262 MachineModuleInfo::MachineModuleInfo()
263 : ImmutablePass(ID), Context(nullptr, nullptr, nullptr) {
264 llvm_unreachable("This MachineModuleInfo constructor should never be called, "
265 "MMI should always be explicitly constructed by "
266 "LLVMTargetMachine");
269 MachineModuleInfo::~MachineModuleInfo() {
272 bool MachineModuleInfo::doInitialization(Module &M) {
274 ObjFileMMI = nullptr;
278 DbgInfoAvailable = UsesVAFloatArgument = UsesMorestackAddr = false;
279 // Always emit some info, by default "no personality" info.
280 Personalities.push_back(nullptr);
281 PersonalityTypeCache = EHPersonality::Unknown;
282 AddrLabelSymbols = nullptr;
288 bool MachineModuleInfo::doFinalization(Module &M) {
290 Personalities.clear();
292 delete AddrLabelSymbols;
293 AddrLabelSymbols = nullptr;
298 ObjFileMMI = nullptr;
303 /// EndFunction - Discard function meta information.
305 void MachineModuleInfo::EndFunction() {
306 // Clean up frame info.
307 FrameInstructions.clear();
309 // Clean up exception info.
317 VariableDbgInfos.clear();
320 /// AnalyzeModule - Scan the module for global debug information.
322 void MachineModuleInfo::AnalyzeModule(const Module &M) {
323 // Insert functions in the llvm.used array (but not llvm.compiler.used) into
325 const GlobalVariable *GV = M.getGlobalVariable("llvm.used");
326 if (!GV || !GV->hasInitializer()) return;
328 // Should be an array of 'i8*'.
329 const ConstantArray *InitList = cast<ConstantArray>(GV->getInitializer());
331 for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
332 if (const Function *F =
333 dyn_cast<Function>(InitList->getOperand(i)->stripPointerCasts()))
334 UsedFunctions.insert(F);
337 //===- Address of Block Management ----------------------------------------===//
340 /// getAddrLabelSymbol - Return the symbol to be used for the specified basic
341 /// block when its address is taken. This cannot be its normal LBB label
342 /// because the block may be accessed outside its containing function.
343 MCSymbol *MachineModuleInfo::getAddrLabelSymbol(const BasicBlock *BB) {
344 // Lazily create AddrLabelSymbols.
345 if (!AddrLabelSymbols)
346 AddrLabelSymbols = new MMIAddrLabelMap(Context);
347 return AddrLabelSymbols->getAddrLabelSymbol(const_cast<BasicBlock*>(BB));
350 /// getAddrLabelSymbolToEmit - Return the symbol to be used for the specified
351 /// basic block when its address is taken. If other blocks were RAUW'd to
352 /// this one, we may have to emit them as well, return the whole set.
353 std::vector<MCSymbol*> MachineModuleInfo::
354 getAddrLabelSymbolToEmit(const BasicBlock *BB) {
355 // Lazily create AddrLabelSymbols.
356 if (!AddrLabelSymbols)
357 AddrLabelSymbols = new MMIAddrLabelMap(Context);
358 return AddrLabelSymbols->getAddrLabelSymbolToEmit(const_cast<BasicBlock*>(BB));
362 /// takeDeletedSymbolsForFunction - If the specified function has had any
363 /// references to address-taken blocks generated, but the block got deleted,
364 /// return the symbol now so we can emit it. This prevents emitting a
365 /// reference to a symbol that has no definition.
366 void MachineModuleInfo::
367 takeDeletedSymbolsForFunction(const Function *F,
368 std::vector<MCSymbol*> &Result) {
369 // If no blocks have had their addresses taken, we're done.
370 if (!AddrLabelSymbols) return;
371 return AddrLabelSymbols->
372 takeDeletedSymbolsForFunction(const_cast<Function*>(F), Result);
375 //===- EH -----------------------------------------------------------------===//
377 /// getOrCreateLandingPadInfo - Find or create an LandingPadInfo for the
378 /// specified MachineBasicBlock.
379 LandingPadInfo &MachineModuleInfo::getOrCreateLandingPadInfo
380 (MachineBasicBlock *LandingPad) {
381 unsigned N = LandingPads.size();
382 for (unsigned i = 0; i < N; ++i) {
383 LandingPadInfo &LP = LandingPads[i];
384 if (LP.LandingPadBlock == LandingPad)
388 LandingPads.push_back(LandingPadInfo(LandingPad));
389 return LandingPads[N];
392 /// addInvoke - Provide the begin and end labels of an invoke style call and
393 /// associate it with a try landing pad block.
394 void MachineModuleInfo::addInvoke(MachineBasicBlock *LandingPad,
395 MCSymbol *BeginLabel, MCSymbol *EndLabel) {
396 LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
397 LP.BeginLabels.push_back(BeginLabel);
398 LP.EndLabels.push_back(EndLabel);
401 /// addLandingPad - Provide the label of a try LandingPad block.
403 MCSymbol *MachineModuleInfo::addLandingPad(MachineBasicBlock *LandingPad) {
404 MCSymbol *LandingPadLabel = Context.createTempSymbol();
405 LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
406 LP.LandingPadLabel = LandingPadLabel;
407 return LandingPadLabel;
410 /// addPersonality - Provide the personality function for the exception
412 void MachineModuleInfo::addPersonality(MachineBasicBlock *LandingPad,
413 const Function *Personality) {
414 LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
415 LP.Personality = Personality;
417 for (unsigned i = 0; i < Personalities.size(); ++i)
418 if (Personalities[i] == Personality)
421 // If this is the first personality we're adding go
422 // ahead and add it at the beginning.
423 if (!Personalities[0])
424 Personalities[0] = Personality;
426 Personalities.push_back(Personality);
429 void MachineModuleInfo::addWinEHState(MachineBasicBlock *LandingPad,
431 LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
432 LP.WinEHState = State;
435 /// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
437 void MachineModuleInfo::
438 addCatchTypeInfo(MachineBasicBlock *LandingPad,
439 ArrayRef<const GlobalValue *> TyInfo) {
440 LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
441 for (unsigned N = TyInfo.size(); N; --N)
442 LP.TypeIds.push_back(getTypeIDFor(TyInfo[N - 1]));
445 /// addFilterTypeInfo - Provide the filter typeinfo for a landing pad.
447 void MachineModuleInfo::
448 addFilterTypeInfo(MachineBasicBlock *LandingPad,
449 ArrayRef<const GlobalValue *> TyInfo) {
450 LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
451 std::vector<unsigned> IdsInFilter(TyInfo.size());
452 for (unsigned I = 0, E = TyInfo.size(); I != E; ++I)
453 IdsInFilter[I] = getTypeIDFor(TyInfo[I]);
454 LP.TypeIds.push_back(getFilterIDFor(IdsInFilter));
457 /// addCleanup - Add a cleanup action for a landing pad.
459 void MachineModuleInfo::addCleanup(MachineBasicBlock *LandingPad) {
460 LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
461 LP.TypeIds.push_back(0);
464 void MachineModuleInfo::addSEHCatchHandler(MachineBasicBlock *LandingPad,
465 const Function *Filter,
466 const BlockAddress *RecoverBA) {
467 LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
469 Handler.FilterOrFinally = Filter;
470 Handler.RecoverBA = RecoverBA;
471 LP.SEHHandlers.push_back(Handler);
474 void MachineModuleInfo::addSEHCleanupHandler(MachineBasicBlock *LandingPad,
475 const Function *Cleanup) {
476 LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
478 Handler.FilterOrFinally = Cleanup;
479 Handler.RecoverBA = nullptr;
480 LP.SEHHandlers.push_back(Handler);
483 /// TidyLandingPads - Remap landing pad labels and remove any deleted landing
485 void MachineModuleInfo::TidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap) {
486 for (unsigned i = 0; i != LandingPads.size(); ) {
487 LandingPadInfo &LandingPad = LandingPads[i];
488 if (LandingPad.LandingPadLabel &&
489 !LandingPad.LandingPadLabel->isDefined() &&
490 (!LPMap || (*LPMap)[LandingPad.LandingPadLabel] == 0))
491 LandingPad.LandingPadLabel = nullptr;
493 // Special case: we *should* emit LPs with null LP MBB. This indicates
495 if (!LandingPad.LandingPadLabel && LandingPad.LandingPadBlock) {
496 LandingPads.erase(LandingPads.begin() + i);
500 for (unsigned j = 0, e = LandingPads[i].BeginLabels.size(); j != e; ++j) {
501 MCSymbol *BeginLabel = LandingPad.BeginLabels[j];
502 MCSymbol *EndLabel = LandingPad.EndLabels[j];
503 if ((BeginLabel->isDefined() ||
504 (LPMap && (*LPMap)[BeginLabel] != 0)) &&
505 (EndLabel->isDefined() ||
506 (LPMap && (*LPMap)[EndLabel] != 0))) continue;
508 LandingPad.BeginLabels.erase(LandingPad.BeginLabels.begin() + j);
509 LandingPad.EndLabels.erase(LandingPad.EndLabels.begin() + j);
513 // Remove landing pads with no try-ranges.
514 if (LandingPads[i].BeginLabels.empty()) {
515 LandingPads.erase(LandingPads.begin() + i);
519 // If there is no landing pad, ensure that the list of typeids is empty.
520 // If the only typeid is a cleanup, this is the same as having no typeids.
521 if (!LandingPad.LandingPadBlock ||
522 (LandingPad.TypeIds.size() == 1 && !LandingPad.TypeIds[0]))
523 LandingPad.TypeIds.clear();
528 /// setCallSiteLandingPad - Map the landing pad's EH symbol to the call site
530 void MachineModuleInfo::setCallSiteLandingPad(MCSymbol *Sym,
531 ArrayRef<unsigned> Sites) {
532 LPadToCallSiteMap[Sym].append(Sites.begin(), Sites.end());
535 /// getTypeIDFor - Return the type id for the specified typeinfo. This is
537 unsigned MachineModuleInfo::getTypeIDFor(const GlobalValue *TI) {
538 for (unsigned i = 0, N = TypeInfos.size(); i != N; ++i)
539 if (TypeInfos[i] == TI) return i + 1;
541 TypeInfos.push_back(TI);
542 return TypeInfos.size();
545 /// getFilterIDFor - Return the filter id for the specified typeinfos. This is
547 int MachineModuleInfo::getFilterIDFor(std::vector<unsigned> &TyIds) {
548 // If the new filter coincides with the tail of an existing filter, then
549 // re-use the existing filter. Folding filters more than this requires
550 // re-ordering filters and/or their elements - probably not worth it.
551 for (std::vector<unsigned>::iterator I = FilterEnds.begin(),
552 E = FilterEnds.end(); I != E; ++I) {
553 unsigned i = *I, j = TyIds.size();
556 if (FilterIds[--i] != TyIds[--j])
560 // The new filter coincides with range [i, end) of the existing filter.
566 // Add the new filter.
567 int FilterID = -(1 + FilterIds.size());
568 FilterIds.reserve(FilterIds.size() + TyIds.size() + 1);
569 FilterIds.insert(FilterIds.end(), TyIds.begin(), TyIds.end());
570 FilterEnds.push_back(FilterIds.size());
571 FilterIds.push_back(0); // terminator
575 /// getPersonality - Return the personality function for the current function.
576 const Function *MachineModuleInfo::getPersonality() const {
577 for (const LandingPadInfo &LPI : LandingPads)
579 return LPI.Personality;
583 EHPersonality MachineModuleInfo::getPersonalityType() {
584 if (PersonalityTypeCache == EHPersonality::Unknown) {
585 if (const Function *F = getPersonality())
586 PersonalityTypeCache = classifyEHPersonality(F);
588 return PersonalityTypeCache;
591 /// getPersonalityIndex - Return unique index for current personality
592 /// function. NULL/first personality function should always get zero index.
593 unsigned MachineModuleInfo::getPersonalityIndex() const {
594 const Function* Personality = nullptr;
596 // Scan landing pads. If there is at least one non-NULL personality - use it.
597 for (unsigned i = 0, e = LandingPads.size(); i != e; ++i)
598 if (LandingPads[i].Personality) {
599 Personality = LandingPads[i].Personality;
603 for (unsigned i = 0, e = Personalities.size(); i < e; ++i) {
604 if (Personalities[i] == Personality)
608 // This will happen if the current personality function is
609 // in the zero index.
613 const Function *MachineModuleInfo::getWinEHParent(const Function *F) const {
614 StringRef WinEHParentName =
615 F->getFnAttribute("wineh-parent").getValueAsString();
616 if (WinEHParentName.empty() || WinEHParentName == F->getName())
618 return F->getParent()->getFunction(WinEHParentName);
621 WinEHFuncInfo &MachineModuleInfo::getWinEHFuncInfo(const Function *F) {
622 auto &Ptr = FuncInfoMap[getWinEHParent(F)];
624 Ptr.reset(new WinEHFuncInfo);