[WinEH] Update exception numbering to give handlers their own base state.

Differential Revision: http://reviews.llvm.org/D9512



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237014 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/WinEHFuncInfo.h

@@ -136,6 +136,7 @@ struct WinEHFuncInfo {
   DenseMap<const Function *, int> CatchHandlerParentFrameObjIdx;
   DenseMap<const Function *, int> CatchHandlerParentFrameObjOffset;
   DenseMap<const Function *, int> CatchHandlerMaxState;
+  DenseMap<const Function *, int> HandlerBaseState;
   SmallVector<WinEHUnwindMapEntry, 4> UnwindMap;
   SmallVector<WinEHTryBlockMapEntry, 4> TryBlockMap;
   SmallVector<std::pair<MCSymbol *, int>, 4> IPToStateList;

lib/CodeGen/AsmPrinter/Win64Exception.cpp

@@ -299,6 +299,17 @@ void Win64Exception::emitCXXFrameHandler3Table(const MachineFunction *MF) {
 
   // The parent function and the catch handlers contribute to the 'ip2state'
   // table.
+
+  // Include ip2state entries for the beginning of the main function and
+  // for catch handler functions.
+  if (F == ParentF) {
+    FuncInfo.IPToStateList.push_back(std::make_pair(LastLabel, -1));
+    LastEHState = -1;
+  } else if (FuncInfo.HandlerBaseState.count(F)) {
+    FuncInfo.IPToStateList.push_back(std::make_pair(LastLabel, 
+                                     FuncInfo.HandlerBaseState[F]));
+    LastEHState = FuncInfo.HandlerBaseState[F];
+  }
   for (const auto &MBB : *MF) {
     for (const auto &MI : MBB) {
       if (!MI.isEHLabel()) {
@@ -323,7 +334,8 @@ void Win64Exception::emitCXXFrameHandler3Table(const MachineFunction *MF) {
       assert(BeginLabel == LandingPad->BeginLabels[P.RangeIndex] &&
              "Inconsistent landing pad map!");
 
-      if (SawPotentiallyThrowing) {
+      // FIXME: Should this be using FuncInfo.HandlerBaseState?
+      if (SawPotentiallyThrowing && LastEHState != -1) {
         FuncInfo.IPToStateList.push_back(std::make_pair(LastLabel, -1));
         SawPotentiallyThrowing = false;
         LastEHState = -1;

lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp

@@ -82,16 +82,18 @@ static ISD::NodeType getPreferredExtendForValue(const Value *V) {
 
 namespace {
 struct WinEHNumbering {
-  WinEHNumbering(WinEHFuncInfo &FuncInfo) : FuncInfo(FuncInfo), NextState(0) {}
+  WinEHNumbering(WinEHFuncInfo &FuncInfo) : FuncInfo(FuncInfo),
+      CurrentBaseState(-1), NextState(0) {}
 
   WinEHFuncInfo &FuncInfo;
+  int CurrentBaseState;
   int NextState;
 
   SmallVector<ActionHandler *, 4> HandlerStack;
   SmallPtrSet<const Function *, 4> VisitedHandlers;
 
   int currentEHNumber() const {
-    return HandlerStack.empty() ? -1 : HandlerStack.back()->getEHState();
+    return HandlerStack.empty() ? CurrentBaseState : HandlerStack.back()->getEHState();
   }
 
   void createUnwindMapEntry(int ToState, ActionHandler *AH);
@@ -401,17 +403,33 @@ static void print_name(const Value *V) {
 
 void WinEHNumbering::processCallSite(ArrayRef<ActionHandler *> Actions,
                                      ImmutableCallSite CS) {
+  DEBUG(dbgs() << "processCallSite (EH state = " << currentEHNumber()
+               << ") for: ");
+  print_name(CS ? CS.getCalledValue() : nullptr);
+  DEBUG(dbgs() << '\n');
+
+  DEBUG(dbgs() << "HandlerStack: \n");
+  for (int I = 0, E = HandlerStack.size(); I < E; ++I) {
+    DEBUG(dbgs() << "  ");
+    print_name(HandlerStack[I]->getHandlerBlockOrFunc());
+    DEBUG(dbgs() << '\n');
+  }
+  DEBUG(dbgs() << "Actions: \n");
+  for (int I = 0, E = Actions.size(); I < E; ++I) {
+    DEBUG(dbgs() << "  ");
+    print_name(Actions[I]->getHandlerBlockOrFunc());
+    DEBUG(dbgs() << '\n');
+  }
   int FirstMismatch = 0;
   for (int E = std::min(HandlerStack.size(), Actions.size()); FirstMismatch < E;
        ++FirstMismatch) {
     if (HandlerStack[FirstMismatch]->getHandlerBlockOrFunc() !=
         Actions[FirstMismatch]->getHandlerBlockOrFunc())
       break;
+    // Delete any actions that are already represented on the handler stack.
     delete Actions[FirstMismatch];
   }
 
-  bool EnteringScope = (int)Actions.size() > FirstMismatch;
-
   // Don't recurse while we are looping over the handler stack.  Instead, defer
   // the numbering of the catch handlers until we are done popping.
   SmallVector<CatchHandler *, 4> PoppedCatches;
@@ -425,46 +443,75 @@ void WinEHNumbering::processCallSite(ArrayRef<ActionHandler *> Actions,
     HandlerStack.pop_back();
   }
 
-  // We need to create a new state number if we are exiting a try scope and we
-  // will not push any more actions.
   int TryHigh = NextState - 1;
-  if (!EnteringScope && !PoppedCatches.empty()) {
-    createUnwindMapEntry(currentEHNumber(), nullptr);
-    ++NextState;
-  }
-
   int LastTryLowIdx = 0;
   for (int I = 0, E = PoppedCatches.size(); I != E; ++I) {
     CatchHandler *CH = PoppedCatches[I];
+    DEBUG(dbgs() << "Popped handler with state " << CH->getEHState() << "\n");
     if (I + 1 == E || CH->getEHState() != PoppedCatches[I + 1]->getEHState()) {
       int TryLow = CH->getEHState();
       auto Handlers =
           makeArrayRef(&PoppedCatches[LastTryLowIdx], I - LastTryLowIdx + 1);
+      DEBUG(dbgs() << "createTryBlockMapEntry(" << TryLow << ", " << TryHigh);
+      for (int J = 0; J < Handlers.size(); ++J) {
+        DEBUG(dbgs() << ", ");
+        print_name(Handlers[J]->getHandlerBlockOrFunc());
+      }
+      DEBUG(dbgs() << ")\n");
       createTryBlockMapEntry(TryLow, TryHigh, Handlers);
       LastTryLowIdx = I + 1;
     }
   }
 
   for (CatchHandler *CH : PoppedCatches) {
-    if (auto *F = dyn_cast<Function>(CH->getHandlerBlockOrFunc()))
+    if (auto *F = dyn_cast<Function>(CH->getHandlerBlockOrFunc())) {
+      DEBUG(dbgs() << "Assigning base state " << NextState << " to ");
+      print_name(F);
+      DEBUG(dbgs() << '\n');
+      FuncInfo.HandlerBaseState[F] = NextState;
+      DEBUG(dbgs() << "createUnwindMapEntry(" << currentEHNumber() 
+                   << ", null)\n");
+      createUnwindMapEntry(currentEHNumber(), nullptr);
+      ++NextState;
       calculateStateNumbers(*F);
+    }
     delete CH;
   }
 
+  // The handler functions may have pushed actions onto the handler stack
+  // that we expected to push here.  Compare the handler stack to our
+  // actions again to check for that possibility.
+  if (HandlerStack.size() > FirstMismatch) {
+    for (int E = std::min(HandlerStack.size(), Actions.size());
+         FirstMismatch < E; ++FirstMismatch) {
+      if (HandlerStack[FirstMismatch]->getHandlerBlockOrFunc() !=
+          Actions[FirstMismatch]->getHandlerBlockOrFunc())
+        break;
+      delete Actions[FirstMismatch];
+    }
+  }
+
+  DEBUG(dbgs() << "Pushing actions for CallSite: ");
+  print_name(CS ? CS.getCalledValue() : nullptr);
+  DEBUG(dbgs() << '\n');
+
   bool LastActionWasCatch = false;
   for (size_t I = FirstMismatch; I != Actions.size(); ++I) {
     // We can reuse eh states when pushing two catches for the same invoke.
     bool CurrActionIsCatch = isa<CatchHandler>(Actions[I]);
     // FIXME: Reenable this optimization!
     if (CurrActionIsCatch && LastActionWasCatch && false) {
+      DEBUG(dbgs() << "setEHState for handler to " << currentEHNumber()
+                   << "\n");
       Actions[I]->setEHState(currentEHNumber());
     } else {
+      DEBUG(dbgs() << "createUnwindMapEntry(" << currentEHNumber() << ", ");
+      print_name(Actions[I]->getHandlerBlockOrFunc());
+      DEBUG(dbgs() << ")\n");
       createUnwindMapEntry(currentEHNumber(), Actions[I]);
+      DEBUG(dbgs() << "setEHState for handler to " << NextState << "\n");
       Actions[I]->setEHState(NextState);
       NextState++;
-      DEBUG(dbgs() << "Creating unwind map entry for: (");
-      print_name(Actions[I]->getHandlerBlockOrFunc());
-      DEBUG(dbgs() << ", " << currentEHNumber() << ")\n");
     }
     HandlerStack.push_back(Actions[I]);
     LastActionWasCatch = CurrActionIsCatch;
@@ -480,6 +527,11 @@ void WinEHNumbering::calculateStateNumbers(const Function &F) {
   if (!I.second)
     return; // We've already visited this handler, don't renumber it.
 
+  int OldBaseState = CurrentBaseState;
+  if (FuncInfo.HandlerBaseState.count(&F)) {
+    CurrentBaseState = FuncInfo.HandlerBaseState[&F];
+  }
+
   DEBUG(dbgs() << "Calculating state numbers for: " << F.getName() << '\n');
   SmallVector<ActionHandler *, 4> ActionList;
   for (const BasicBlock &BB : F) {
@@ -498,12 +550,19 @@ void WinEHNumbering::calculateStateNumbers(const Function &F) {
       continue;
     assert(ActionsCall->getIntrinsicID() == Intrinsic::eh_actions);
     parseEHActions(ActionsCall, ActionList);
+    if (ActionList.empty())
+      continue;
     processCallSite(ActionList, II);
     ActionList.clear();
     FuncInfo.LandingPadStateMap[LPI] = currentEHNumber();
+    DEBUG(dbgs() << "Assigning state " << currentEHNumber()
+                  << " to landing pad at " << LPI->getParent()->getName()
+                  << '\n');
   }
 
   FuncInfo.CatchHandlerMaxState[&F] = NextState - 1;
+
+  CurrentBaseState = OldBaseState;
 }
 
 /// clear - Clear out all the function-specific state. This returns this

test/CodeGen/WinEH/cppeh-prepared-catch-reordered.ll

@@ -120,7 +120,7 @@ stub:                                             ; preds = %entry
 ; CHECK-NEXT:         .long   ($stateUnwindMap$main)@IMGREL
 ; CHECK-NEXT:         .long   1
 ; CHECK-NEXT:         .long   ($tryMap$main)@IMGREL
-; CHECK-NEXT:         .long   1
+; CHECK-NEXT:         .long   3
 ; CHECK-NEXT:         .long   ($ip2state$main)@IMGREL
 ; CHECK-NEXT:         .long   40
 ; CHECK-NEXT:         .long   0

test/CodeGen/WinEH/cppeh-prepared-catch.ll

@@ -127,7 +127,7 @@ try.cont8:                                        ; preds = %lpad2, %try.cont
 ; CHECK-NEXT:        .long   ("$stateUnwindMap$?f@@YAXXZ")@IMGREL
 ; CHECK-NEXT:        .long   2
 ; CHECK-NEXT:        .long   ("$tryMap$?f@@YAXXZ")@IMGREL
-; CHECK-NEXT:        .long   3
+; CHECK-NEXT:        .long   6
 ; CHECK-NEXT:        .long   ("$ip2state$?f@@YAXXZ")@IMGREL
 ; CHECK-NEXT:        .long   32
 ; CHECK-NEXT:        .long   0
@@ -165,8 +165,14 @@ try.cont8:                                        ; preds = %lpad2, %try.cont
 ; CHECK-NEXT:        .long   "?f@@YAXXZ.catch1"@IMGREL
 ; CHECK-NEXT:        .long   ".L?f@@YAXXZ.catch1$parent_frame_offset"
 ; CHECK-NEXT:"$ip2state$?f@@YAXXZ":
+; CHECK-NEXT:        .long   .Lfunc_begin0@IMGREL
+; CHECK-NEXT:        .long   2
 ; CHECK-NEXT:        .long   .Ltmp0@IMGREL
 ; CHECK-NEXT:        .long   0
+; CHECK-NEXT:        .long   .Lfunc_begin1@IMGREL
+; CHECK-NEXT:        .long   3
+; CHECK-NEXT:        .long   .Lfunc_begin2@IMGREL
+; CHECK-NEXT:        .long   -1
 ; CHECK-NEXT:        .long   .Ltmp13@IMGREL
 ; CHECK-NEXT:        .long   1
 ; CHECK-NEXT:        .long   .Ltmp16@IMGREL

test/CodeGen/WinEH/cppeh-prepared-cleanups.ll

@@ -36,7 +36,7 @@ $_TI1H = comdat any
 ; CHECK-NEXT:        .long   ("$stateUnwindMap$?test1@@YAXXZ")@IMGREL
 ; CHECK-NEXT:        .long   0
 ; CHECK-NEXT:        .long   0
-; CHECK-NEXT:        .long   1
+; CHECK-NEXT:        .long   2
 ; CHECK-NEXT:        .long   ("$ip2state$?test1@@YAXXZ")@IMGREL
 ; CHECK-NEXT:        .long   32
 ; CHECK-NEXT:        .long   0
@@ -45,6 +45,8 @@ $_TI1H = comdat any
 ; CHECK-NEXT:        .long   -1
 ; CHECK-NEXT:        .long   "?test1@@YAXXZ.cleanup"@IMGREL
 ; CHECK-NEXT:"$ip2state$?test1@@YAXXZ":
+; CHECK-NEXT:        .long   .Lfunc_begin0@IMGREL
+; CHECK-NEXT:        .long   -1
 ; CHECK-NEXT:        .long   .Ltmp0@IMGREL
 ; CHECK-NEXT:        .long   0
 

test/CodeGen/WinEH/cppeh-state-calc-1.ll

@@ -0,0 +1,289 @@
+; RUN: llc < %s | FileCheck %s
+
+; This test was generated from the following code.
+;
+; void test() {
+;   try {
+;     try {
+;       try {
+;         two();
+;         throw 2;
+;       } catch (int x) {
+;         catch_two();
+;       }
+;       a();
+;       throw 'a';
+;     } catch (char c) {
+;       catch_a();
+;     }
+;     one();
+;     throw 1;
+;   } catch(int x) { 
+;     catch_one();
+;   } catch(...) {
+;     catch_all();
+;   }
+; }
+;
+; The function calls before the throws were declared as 'noexcept' and are
+; just here to make blocks easier to identify in the IR.
+
+; ModuleID = '<stdin>'
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
+%eh.CatchHandlerType = type { i32, i8* }
+%eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 }
+%eh.CatchableTypeArray.1 = type { i32, [1 x i32] }
+%eh.ThrowInfo = type { i32, i32, i32, i32 }
+
+$"\01??_R0H@8" = comdat any
+
+$"\01??_R0D@8" = comdat any
+
+$"_CT??_R0H@84" = comdat any
+
+$_CTA1H = comdat any
+
+$_TI1H = comdat any
+
+$"_CT??_R0D@81" = comdat any
+
+$_CTA1D = comdat any
+
+$_TI1D = comdat any
+
+@"\01??_7type_info@@6B@" = external constant i8*
+@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
+@llvm.eh.handlertype.H.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata"
+@"\01??_R0D@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".D\00" }, comdat
+@llvm.eh.handlertype.D.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0D@8" to i8*) }, section "llvm.metadata"
+@__ImageBase = external constant i8
+@"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat
+@_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0H@84" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
+@_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1H to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat
+@"_CT??_R0D@81" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"\01??_R0D@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 1, i32 0 }, section ".xdata", comdat
+@_CTA1D = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0D@81" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
+@_TI1D = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1D to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat
+
+; Function Attrs: nounwind uwtable
+define void @"\01?test@@YAXXZ"() #0 {
+entry:
+  %tmp = alloca i32, align 4
+  %x = alloca i32, align 4
+  %tmp2 = alloca i8, align 1
+  %c = alloca i8, align 1
+  %tmp11 = alloca i32, align 4
+  %x21 = alloca i32, align 4
+  call void @"\01?two@@YAXXZ"() #3
+  store i32 2, i32* %tmp
+  %0 = bitcast i32* %tmp to i8*
+  call void (...) @llvm.frameescape(i32* %x, i8* %c, i32* %x21)
+  invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #5
+          to label %unreachable unwind label %lpad
+
+lpad:                                             ; preds = %entry
+  %1 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          catch i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*)
+          catch %eh.CatchHandlerType* @llvm.eh.handlertype.D.0
+          catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.0
+          catch i8* null
+  %recover = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*), i32 0, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch", i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.D.0 to i8*), i32 1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch1", i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch2", i32 1, i8* null, i32 -1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch3")
+  indirectbr i8* %recover, [label %try.cont, label %try.cont10, label %try.cont22]
+
+try.cont:                                         ; preds = %lpad
+  call void @"\01?a@@YAXXZ"() #3
+  store i8 97, i8* %tmp2
+  invoke void @_CxxThrowException(i8* %tmp2, %eh.ThrowInfo* @_TI1D) #5
+          to label %unreachable unwind label %lpad3
+
+lpad3:                                            ; preds = %try.cont
+  %2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          catch %eh.CatchHandlerType* @llvm.eh.handlertype.D.0
+          catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.0
+          catch i8* null
+  %recover1 = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.D.0 to i8*), i32 1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch1", i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch2", i32 1, i8* null, i32 -1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch3")
+  indirectbr i8* %recover1, [label %try.cont10, label %try.cont22]
+
+try.cont10:                                       ; preds = %lpad3, %lpad
+  call void @"\01?one@@YAXXZ"() #3
+  store i32 1, i32* %tmp11
+  %3 = bitcast i32* %tmp11 to i8*
+  invoke void @_CxxThrowException(i8* %3, %eh.ThrowInfo* @_TI1H) #5
+          to label %unreachable unwind label %lpad12
+
+lpad12:                                           ; preds = %try.cont10
+  %4 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.0
+          catch i8* null
+  %recover2 = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*), i32 2, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch2", i32 1, i8* null, i32 -1, i8* (i8*, i8*)* @"\01?test@@YAXXZ.catch3")
+  indirectbr i8* %recover2, [label %try.cont22]
+
+try.cont22:                                       ; preds = %lpad12, %lpad3, %lpad
+  ret void
+
+unreachable:                                      ; preds = %try.cont10, %try.cont, %entry
+  unreachable
+}
+
+; Function Attrs: nounwind
+declare void @"\01?two@@YAXXZ"() #1
+
+declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
+
+declare i32 @__CxxFrameHandler3(...)
+
+; Function Attrs: nounwind readnone
+declare i32 @llvm.eh.typeid.for(i8*) #2
+
+; Function Attrs: nounwind
+declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #3
+
+; Function Attrs: nounwind
+declare void @"\01?catch_two@@YAXXZ"() #1
+
+; Function Attrs: nounwind
+declare void @llvm.eh.endcatch() #3
+
+; Function Attrs: nounwind
+declare void @"\01?a@@YAXXZ"() #1
+
+; Function Attrs: nounwind
+declare void @"\01?catch_a@@YAXXZ"() #1
+
+; Function Attrs: nounwind
+declare void @"\01?one@@YAXXZ"() #1
+
+; Function Attrs: nounwind
+declare void @"\01?catch_all@@YAXXZ"() #1
+
+; Function Attrs: nounwind
+declare void @"\01?catch_one@@YAXXZ"() #1
+
+; Function Attrs: nounwind
+declare i8* @llvm.eh.actions(...) #3
+
+define internal i8* @"\01?test@@YAXXZ.catch"(i8*, i8*) #4 {
+entry:
+  %x.i8 = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 0)
+  %x = bitcast i8* %x.i8 to i32*
+  %2 = bitcast i32* %x to i8*
+  call void @"\01?catch_two@@YAXXZ"() #3
+  invoke void @llvm.donothing()
+          to label %entry.split unwind label %stub
+
+entry.split:                                      ; preds = %entry
+  ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont)
+
+stub:                                             ; preds = %entry
+  %3 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          cleanup
+  %recover = call i8* (...) @llvm.eh.actions()
+  unreachable
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.donothing() #2
+
+define internal i8* @"\01?test@@YAXXZ.catch1"(i8*, i8*) #4 {
+entry:
+  call void @"\01?catch_a@@YAXXZ"() #3
+  invoke void @llvm.donothing()
+          to label %entry.split unwind label %stub
+
+entry.split:                                      ; preds = %entry
+  ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont10)
+
+stub:                                             ; preds = %entry
+  %2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          cleanup
+  %recover = call i8* (...) @llvm.eh.actions()
+  unreachable
+}
+
+define internal i8* @"\01?test@@YAXXZ.catch2"(i8*, i8*) #4 {
+entry:
+  %x21.i8 = call i8* @llvm.framerecover(i8* bitcast (void ()* @"\01?test@@YAXXZ" to i8*), i8* %1, i32 2)
+  %x21 = bitcast i8* %x21.i8 to i32*
+  %2 = bitcast i32* %x21 to i8*
+  call void @"\01?catch_one@@YAXXZ"() #3
+  invoke void @llvm.donothing()
+          to label %entry.split unwind label %stub
+
+entry.split:                                      ; preds = %entry
+  ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont22)
+
+stub:                                             ; preds = %entry
+  %3 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          cleanup
+  %recover = call i8* (...) @llvm.eh.actions()
+  unreachable
+}
+
+define internal i8* @"\01?test@@YAXXZ.catch3"(i8*, i8*) #4 {
+entry:
+  call void @"\01?catch_all@@YAXXZ"() #3
+  invoke void @llvm.donothing()
+          to label %entry.split unwind label %stub
+
+entry.split:                                      ; preds = %entry
+  ret i8* blockaddress(@"\01?test@@YAXXZ", %try.cont22)
+
+stub:                                             ; preds = %entry
+  %2 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*)
+          cleanup
+  %recover = call i8* (...) @llvm.eh.actions()
+  unreachable
+}
+
+; Function Attrs: nounwind
+declare void @llvm.frameescape(...) #3
+
+; Function Attrs: nounwind readnone
+declare i8* @llvm.framerecover(i8*, i8*, i32) #2
+
+attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" "wineh-parent"="
?test@@YAXXZ" }
+attributes #1 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #2 = { nounwind readnone }
+attributes #3 = { nounwind }
+attributes #4 = { "wineh-parent"="
?test@@YAXXZ" }
+attributes #5 = { noreturn }
+
+!llvm.module.flags = !{!0}
+!llvm.ident = !{!1}
+
+!0 = !{i32 1, !"PIC Level", i32 2}
+!1 = !{!"clang version 3.7.0 (trunk 236059)"}
+
+; CHECK-LABEL: "$cppxdata$?test@@YAXXZ":
+; CHECK-NEXT: 	.long	429065506
+; CHECK-NEXT: 	.long
+; CHECK-NEXT: 	.long	("$stateUnwindMap$?test@@YAXXZ")@IMGREL
+; CHECK-NEXT: 	.long
+; CHECK-NEXT: 	.long	("$tryMap$?test@@YAXXZ")@IMGREL
+; CHECK-NEXT: 	.long
+; CHECK-NEXT: 	.long	("$ip2state$?test@@YAXXZ")@IMGREL
+; CHECK-NEXT: 	.long	40
+; CHECK-NEXT: 	.long	0
+; CHECK-NEXT: 	.long	1
+; CHECK: "$stateUnwindMap$?test@@YAXXZ":
+; CHECK: "$tryMap$?test@@YAXXZ":
+; CHECK: "$handlerMap$0$?test@@YAXXZ":
+; CHECK: "$ip2state$?test@@YAXXZ":
+; CHECK-NEXT: 	.long	.Lfunc_begin0@IMGREL
+; CHECK-NEXT: 	.long	-1
+; CHECK-NEXT: 	.long	.Ltmp0@IMGREL
+; CHECK-NEXT: 	.long	3
+; CHECK-NEXT: 	.long	.Ltmp3@IMGREL
+; CHECK-NEXT: 	.long	2
+; CHECK-NEXT: 	.long	.Ltmp6@IMGREL
+; CHECK-NEXT: 	.long	1
+; CHECK-NEXT: 	.long	.Lfunc_begin1@IMGREL
+; CHECK-NEXT: 	.long	4
+; CHECK-NEXT: 	.long	.Lfunc_begin2@IMGREL
+; CHECK-NEXT: 	.long	5
+; CHECK-NEXT: 	.long	.Lfunc_begin3@IMGREL
+; CHECK-NEXT: 	.long	6
+; CHECK-NEXT: 	.long	.Lfunc_begin4@IMGREL
+; CHECK-NEXT: 	.long	7