1 files changed, 3 insertions, 0 deletions
diff --git a/lib/AST/Mangle.cpp b/lib/AST/Mangle.cpp
index ee241732e8ad2..05dd886adcefc 100644
--- a/lib/AST/Mangle.cpp
+++ b/lib/AST/Mangle.cpp
@@ -52,6 +52,7 @@ void MangleContext::anchor() { }
 enum CCMangling {
   CCM_Other,
   CCM_Fast,
+  CCM_RegCall,
   CCM_Vector,
   CCM_Std
 };
@@ -152,6 +153,8 @@ void MangleContext::mangleName(const NamedDecl *D, raw_ostream &Out) {
     Out << '_';
   else if (CC == CCM_Fast)
     Out << '@';
+  else if (CC == CCM_RegCall)
+    Out << "__regcall3__";
 
   if (!MCXX)
     Out << D->getIdentifier()->getName();