http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55752
--- Comment #2 from rguenther at suse dot de <rguenther at suse dot de> 2012-12-20 13:07:20 UTC --- On Thu, 20 Dec 2012, ubizjak at gmail dot com wrote: > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55752 > > --- Comment #1 from Uros Bizjak <ubizjak at gmail dot com> 2012-12-20 > 12:59:40 UTC --- > The RTXes that corresponds to builtins are all declared unspec_volatile. > According to the comment in sched-deps.c, around line 2723, it is assumed that > unspec_volatile clobbers all registers. Ok, it seems it's TER that moves the subtraction. Richard.
