1 files changed, 22 insertions, 14 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
index 62ad356e7f8..3829dd4eff1 100644
--- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
@@ -303,12 +303,19 @@ static StringRef getPrettyScopeName(const DIScope *Scope) {
   return StringRef();
 }
 
-static const DISubprogram *getQualifiedNameComponents(
+const DISubprogram *CodeViewDebug::collectParentScopeNames(
     const DIScope *Scope, SmallVectorImpl<StringRef> &QualifiedNameComponents) {
   const DISubprogram *ClosestSubprogram = nullptr;
   while (Scope != nullptr) {
     if (ClosestSubprogram == nullptr)
       ClosestSubprogram = dyn_cast<DISubprogram>(Scope);
+
+    // If a type appears in a scope chain, make sure it gets emitted. The
+    // frontend will be responsible for deciding if this should be a forward
+    // declaration or a complete type.
+    if (const auto *Ty = dyn_cast<DIType>(Scope))
+      (void)getTypeIndex(Ty);
+
     StringRef ScopeName = getPrettyScopeName(Scope);
     if (!ScopeName.empty())
       QualifiedNameComponents.push_back(ScopeName);
@@ -317,8 +324,9 @@ static const DISubprogram *getQualifiedNameComponents(
   return ClosestSubprogram;
 }
 
-static std::string getQualifiedName(ArrayRef<StringRef> QualifiedNameComponents,
-                                    StringRef TypeName) {
+std::string
+CodeViewDebug::formatNestedName(ArrayRef<StringRef> QualifiedNameComponents,
+                                StringRef TypeName) {
   std::string FullyQualifiedName;
   for (StringRef QualifiedNameComponent :
        llvm::reverse(QualifiedNameComponents)) {
@@ -329,10 +337,15 @@ static std::string getQualifiedName(ArrayRef<StringRef> QualifiedNameComponents,
   return FullyQualifiedName;
 }
 
-static std::string getFullyQualifiedName(const DIScope *Scope, StringRef Name) {
+std::string CodeViewDebug::getFullyQualifiedName(const DIScope *Scope, StringRef Name) {
   SmallVector<StringRef, 5> QualifiedNameComponents;
-  getQualifiedNameComponents(Scope, QualifiedNameComponents);
-  return getQualifiedName(QualifiedNameComponents, Name);
+  collectParentScopeNames(Scope, QualifiedNameComponents);
+  return formatNestedName(QualifiedNameComponents, Name);
+}
+
+std::string CodeViewDebug::getFullyQualifiedName(const DIScope *Ty) {
+  const DIScope *Scope = Ty->getScope();
+  return getFullyQualifiedName(Scope, getPrettyScopeName(Ty));
 }
 
 struct CodeViewDebug::TypeLoweringScope {
@@ -347,11 +360,6 @@ struct CodeViewDebug::TypeLoweringScope {
   CodeViewDebug &CVD;
 };
 
-static std::string getFullyQualifiedName(const DIScope *Ty) {
-  const DIScope *Scope = Ty->getScope();
-  return getFullyQualifiedName(Scope, getPrettyScopeName(Ty));
-}
-
 TypeIndex CodeViewDebug::getScopeIndex(const DIScope *Scope) {
   // No scope means global scope and that uses the zero index.
   if (!Scope || isa<DIFile>(Scope))
@@ -1468,12 +1476,12 @@ void CodeViewDebug::addToUDTs(const DIType *Ty) {
   if (!shouldEmitUdt(Ty))
     return;
 
-  SmallVector<StringRef, 5> QualifiedNameComponents;
+  SmallVector<StringRef, 5> ParentScopeNames;
   const DISubprogram *ClosestSubprogram =
-      getQualifiedNameComponents(Ty->getScope(), QualifiedNameComponents);
+      collectParentScopeNames(Ty->getScope(), ParentScopeNames);
 
   std::string FullyQualifiedName =
-      getQualifiedName(QualifiedNameComponents, getPrettyScopeName(Ty));
+      formatNestedName(ParentScopeNames, getPrettyScopeName(Ty));
 
   if (ClosestSubprogram == nullptr) {
     GlobalUDTs.emplace_back(std::move(FullyQualifiedName), Ty);