No need to use the extra three bytes if we don't need them.
Created attachment 245949 [details] patch
landed in: http://trac.webkit.org/changeset/179621
Comment on attachment 245949 [details] patch View in context: https://bugs.webkit.org/attachment.cgi?id=245949&action=review > Source/JavaScriptCore/runtime/TypeSet.h:54 > -enum RuntimeType { > +enum RuntimeType : uint8_t { > TypeNothing = 0x0, > TypeFunction = 0x1, > TypeUndefined = 0x2, Do we need to count "Symbol" types now that they landed? js> function foo(arg) { console.log(arg); } js> foo(Symbol("test")); Seems this would bump us over this edge, at least up to 16 bits.