[Bug ipa/58862] [4.9 Regression] LTO profiledbootstrap failure: lto1: ICE in edge_badness, at ipa-inline.c:1008

tejohnson at google dot com gcc-bugzilla@gcc.gnu.org
Fri Nov 1 17:14:00 GMT 2013


--- Comment #10 from Teresa Johnson <tejohnson at google dot com> ---
On Fri, Nov 1, 2013 at 10:01 AM, paulo@matos-sorge.com
<gcc-bugzilla@gcc.gnu.org> wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58862
> --- Comment #9 from Paulo J. Matos <paulo@matos-sorge.com> ---
> I didn't manage to reproduce the bug yet. With the git sha before my commit
> 4bc0f16, I get the following on a profiledbootstrap on x64:
> insn-opinit.c: In function 'void init_all_optabs(target_optabs*)':
> insn-opinit.c:1234:1: error: verify_flow_info: Wrong probability of edge
> 1437->2606 66380
>  init_all_optabs (struct target_optabs *optabs)
>  ^
> insn-opinit.c:1234:1: error: verify_flow_info: Wrong probability of edge
> 1427->2598 66380
> insn-opinit.c:1234:1: internal compiler error: verify_flow_info failed
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://gcc.gnu.org/bugs.html> for instructions.

The above was introduced by r203823, and fixed by r204178. Doesn't
show up with a normal profiledbootstrap, but apparently does with an
lto-profiledbootstrap (going by the above report, haven't confirmed
this myself).


> Unfortunately running one of these takes a long time so it's a slow process to
> check it out since as far as I am aware it's not possible to use a parallel
> build. Do let me know if there's a fast way to build it.
> I will keep investigating.
> --
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