https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78985
--- Comment #6 from rguenther at suse dot de <rguenther at suse dot de> --- On January 20, 2017 3:07:37 PM GMT+01:00, "marxin at gcc dot gnu.org" <gcc-bugzi...@gcc.gnu.org> wrote: >https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78985 > >--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> --- >(In reply to rguent...@suse.de from comment #4) >> On Fri, 20 Jan 2017, marxin at gcc dot gnu.org wrote: >> >> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78985 >> > >> > Martin Liška <marxin at gcc dot gnu.org> changed: >> > >> > What |Removed |Added >> > >---------------------------------------------------------------------------- >> > Status|UNCONFIRMED |NEW >> > Last reconfirmed| |2017-01-20 >> > Assignee|unassigned at gcc dot gnu.org |marxin at >gcc dot gnu.org >> > Ever confirmed|0 |1 >> > >> > --- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> --- >> > I'll try to bisect that, on aarch64 machine I see: >> > >> > ../../gcc/config/aarch64/cortex-a57-fma-steering.c: In member >function ‘void >> > func_fma_steering::analyze()’: >> > ../../gcc/config/aarch64/cortex-a57-fma-steering.c:979:53: error: >‘head’ may be >> > used uninitialized in this function [-Werror=maybe-uninitialized] >> > this->analyze_fma_fmul_insn (forest, chain, head); >> > ^ >> > ../../gcc/config/aarch64/cortex-a57-fma-steering.c:979:53: error: >‘forest’ may >> > be used uninitialized in this function >[-Werror=maybe-uninitialized] >> > ../../gcc/config/aarch64/cortex-a57-fma-steering.c:979:53: error: >‘chain’ may >> > be used uninitialized in this function >[-Werror=maybe-uninitialized] >> > >> > I'll try to bisect.. >> >> Yes, aarch64 has a similar issue. > >This is aarch64 machine :) Do you remember whether profiledbootstrap >used to >succeed (for bisect start)? It used to, yes. It at least works on the branch.
