https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62025
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |bernds at gcc dot gnu.org
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems that is the http://gcc.gnu.org/ml/gcc-patches/2012-08/msg00155.html
minipass, supposedly when it sees that it could break a reg dependency (on r8
in this case), it just ignores the fact that it can have other side effects.
parse_add_or_inc uses single_set which will return the increment SET even if
there are extra clobbers. Giving up would make the minipass useless on many
architectures, so I think we just need to make sure that we ignore the reg
dependency only on the address register (r8 here), but not for the clobbered
regs.
