[Coroutines] Add proper mangling for operator co_await for MicrosoftABI

Reviewers: rnk, rsmith

Subscribers: mehdi_amini, cfe-commits

Differential Revision: https://reviews.llvm.org/D25045

llvm-svn: 282645

1 files changed, 2 insertions, 8 deletions

diff --git a/clang/lib/AST/MicrosoftMangle.cpp b/clang/lib/AST/MicrosoftMangle.cpp
index 479ac44aa09..1ff433bed0c 100644
--- a/clang/lib/AST/MicrosoftMangle.cpp
+++ b/clang/lib/AST/MicrosoftMangle.cpp
@@ -1089,6 +1089,8 @@ void MicrosoftCXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO,
   case OO_Array_New: Out << "?_U"; break;
   // <operator-name> ::= ?_V # delete[]
   case OO_Array_Delete: Out << "?_V"; break;
+  // <operator-name> ::= ?__L # co_await
+  case OO_Coawait: Out << "?__L"; break;
 
   case OO_Conditional: {
     DiagnosticsEngine &Diags = Context.getDiags();
@@ -1098,14 +1100,6 @@ void MicrosoftCXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO,
     break;
   }
 
-  case OO_Coawait: {
-    DiagnosticsEngine &Diags = Context.getDiags();
-    unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
-      "cannot mangle this operator co_await yet");
-    Diags.Report(Loc, DiagID);
-    break;
-  }
-
   case OO_None:
   case NUM_OVERLOADED_OPERATORS:
     llvm_unreachable("Not an overloaded operator");