http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58067
--- Comment #6 from Ben Woodard <woodard at redhat dot com> --- I just rebuilt the trunk with the patch that Alexandre Oliva provided and I can confirm that it solves the problem with notes about non-delegitimized addresses. However, I haven't yet tested the DWARF to make sure that it works as expected. If we do make -mtls-dialect=gnu2 the default or even implied when you specify -mcmodel=large, won't you still need to fix the problem with the unknown instruction just in case someone does -mtls-dialect=gnu or will you just error out saying: "-mcmodel=large is not supported within -mtls-dialect=gnu". Personally, I believe that erroring out that way is perfectly acceptable.