Index: lib/Basic/Targets/X86.h
--- lib/Basic/Targets/X86.h.orig
+++ lib/Basic/Targets/X86.h
@@ -106,6 +106,7 @@ class LLVM_LIBRARY_VISIBILITY X86TargetInfo : public T
   bool HasMOVDIR64B = false;
   bool HasPTWRITE = false;
   bool HasINVPCID = false;
+  bool HasSaveArgs = false;
 
 protected:
   /// Enumeration of all of the X86 CPUs supported by Clang.
