Give CGDebugInfo::getContextDescriptor a more specific return type

Not that the DI* hierarchy is terribly type safe, but this makes the contract a
little clearer I think.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179835 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 7 insertions, 10 deletions

diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index 7a727de5fa..dedf6018aa 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -89,7 +89,7 @@ void CGDebugInfo::setLocation(SourceLocation Loc) {
 }
 
 /// getContextDescriptor - Get context info for the decl.
-llvm::DIDescriptor CGDebugInfo::getContextDescriptor(const Decl *Context) {
+llvm::DIScope CGDebugInfo::getContextDescriptor(const Decl *Context) {
   if (!Context)
     return TheCU;
 
@@ -97,20 +97,17 @@ llvm::DIDescriptor CGDebugInfo::getContextDescriptor(const Decl *Context) {
     I = RegionMap.find(Context);
   if (I != RegionMap.end()) {
     llvm::Value *V = I->second;
-    return llvm::DIDescriptor(dyn_cast_or_null<llvm::MDNode>(V));
+    return llvm::DIScope(dyn_cast_or_null<llvm::MDNode>(V));
   }
 
   // Check namespace.
   if (const NamespaceDecl *NSDecl = dyn_cast<NamespaceDecl>(Context))
-    return llvm::DIDescriptor(getOrCreateNameSpace(NSDecl));
+    return getOrCreateNameSpace(NSDecl);
 
-  if (const RecordDecl *RDecl = dyn_cast<RecordDecl>(Context)) {
-    if (!RDecl->isDependentType()) {
-      llvm::DIType Ty = getOrCreateType(CGM.getContext().getTypeDeclType(RDecl),
+  if (const RecordDecl *RDecl = dyn_cast<RecordDecl>(Context))
+    if (!RDecl->isDependentType())
+      return getOrCreateType(CGM.getContext().getTypeDeclType(RDecl),
                                         getOrCreateMainFile());
-      return llvm::DIDescriptor(Ty);
-    }
-  }
   return TheCU;
 }
 
diff --git a/lib/CodeGen/CGDebugInfo.h b/lib/CodeGen/CGDebugInfo.h
index 3a0df999b5..060b738058 100644
--- a/lib/CodeGen/CGDebugInfo.h
+++ b/lib/CodeGen/CGDebugInfo.h
@@ -281,7 +281,7 @@ private:
                                             uint64_t *OffSet);
 
   /// getContextDescriptor - Get context info for the decl.
-  llvm::DIDescriptor getContextDescriptor(const Decl *Decl);
+  llvm::DIScope getContextDescriptor(const Decl *Decl);
 
   /// createRecordFwdDecl - Create a forward decl for a RecordType in a given
   /// context.