Besides the warning, issue unsupported diagnostics in 
ir gen. No intended change in functionality.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67857 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/AttributeList.cpp b/lib/Parse/AttributeList.cpp
index 9cee6ab..cd192c9 100644
--- a/lib/Parse/AttributeList.cpp
+++ b/lib/Parse/AttributeList.cpp
@@ -80,6 +80,7 @@
     if (!memcmp(Str, "nonnull", 7)) return AT_nonnull;
     if (!memcmp(Str, "nothrow", 7)) return AT_nothrow;
     if (!memcmp(Str, "objc_gc", 7)) return AT_objc_gc;
+    if (!memcmp(Str, "regparm", 7)) return AT_regparm;
     if (!memcmp(Str, "section", 7)) return AT_section;
     if (!memcmp(Str, "stdcall", 7)) return AT_stdcall;
     break;