Debug info: Ensure that the last stop point in a function is still within
the lexical block formed by the compound statement that is the function
body.

rdar://problem/15010825

llvm-svn: 198461
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index fec1c33..c12e294 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -2537,7 +2537,8 @@
 /// information in the source file. If the location is invalid, the
 /// previous location will be reused.
 void CGDebugInfo::EmitLocation(CGBuilderTy &Builder, SourceLocation Loc,
-                               bool ForceColumnInfo) {
+                               bool ForceColumnInfo,
+                               llvm::MDNode *ForceScope) {
   // Update our current location
   setLocation(Loc);
 
@@ -2556,7 +2557,7 @@
   // Update last state.
   PrevLoc = CurLoc;
 
-  llvm::MDNode *Scope = LexicalBlockStack.back();
+  llvm::MDNode *Scope = ForceScope ? ForceScope : &*LexicalBlockStack.back();
   Builder.SetCurrentDebugLocation(llvm::DebugLoc::get
                                   (getLineNumber(CurLoc),
                                    getColumnNumber(CurLoc, ForceColumnInfo),