Suppress 'not handled in switch' warning

llvm-svn: 213371
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
index 28f44ce..6a3ec8f 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
@@ -163,6 +163,8 @@
   case Triple::ARMSubArch_v4t:
     ARMArchFeature = "+v4t";
     break;
+  case Triple::NoSubArch:
+    break;
   }
 
   if (isThumb) {