http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52381
--- Comment #2 from Marc Glisse <marc.glisse at normalesup dot org> 2012-02-27 21:08:44 UTC --- (In reply to comment #1) > I don't think asm goto was designed to contain more than a computed jump > instruction. And I don't know how reliably we could allocate registers > for outputs on the multiple outgoing edges. > > So, it's definitely by design. Note that if output was only reliable on the fall-through path, it would already be useful. It may not have to be all-edges-or-nothing (or it may have to, I don't know enough). Although that could be confusing... > Confirmed for the diagnostic issue. Thanks. While I am asking, I guess that since asm goto involves control flow it never gets reordered (as opposed to regular asm), but if someone feels like adding a sentence with this guarantee to the doc it would be helpful too.
