Hi Chip,
I saw your patch for 64-bit debug registers. Thanks!
It made me wonder if you've got anything else in-progress related to 64-bit on OS X? In particular, are you still working on support for __builtin_ms_va_list in Clang or the problems you mentioned previously about code generation when switching calling conventions?
I noticed that a bug with DWARF unwind info got fixed in the Clang/LLVM trunk sometime after 3.6. Was that your doing? (You mentioned something like this in your April 29th email.) If so, thanks!
I was thinking of tackling the dbghelp support for 64-bit Mach-O images (although not DWARF debugging info) sometime soon, but maybe you're already working on that. Are you? If so, I'll leave it to you.
Cheers, Ken