http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55030
--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2013-02-18 10:48:18 UTC --- > I've lost track. What was "the original patch", what do you mean by "the > blockage patch" (that has been installed) and I'm pretty sure there were > several follow-up patches, so I can't say I'm confident about reverting > something from just this subset. (To wit: if it's something that causes > volatile asms to again be treated different from (other) blockages, then > that's > wrong, as a volatile asm is the default blockage.) The original patch was the patch you reverted in comment #1 and the fix for the original issue. As far as I can see, you didn't put it back after installing the blockage patch, which is the patch in comment #5. The dse.c and cselib.c hunks were not necessary and not in the submission, but I asked you to add them for the sake of consistency; then Jakub pointed out that they pessimize volatile asms.
