[Bug bootstrap/54718] [4.8 regression] ICE in remap_gimple_stmt, at tree-inline.c:1468

["ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54718

--- Comment #6 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> 2012-10-04 12:41:42 UTC ---
> --- Comment #5 from Uros Bizjak <ubizjak at gmail dot com> 2012-09-28
> 08:54:51 UTC ---
> (In reply to comment #4)
>> The fix for PR bootstrap/54688 also fixed this one.  I can't say if there's
>> another unrelated issue here, though.
>> 
>> There's one other problem (which is most likely different and has occured
>> before):
>> 
>> Since 20120919, go1 might run into an infinite loop compiling one or more
>> sparcv9 libgo modules:
>
> Related to PR54507. You can try to compile with -fno-var-tracking-assignments.

That helps indeed: on a 1.2 GHz UltraSPARC-T2, the sparcv9 fmt test
takes

real    20:14:33.53
user    20:14:09.94
sys           12.42

without -fno-var-tracking-assignments, but

real       16:41.37
user       16:11.86
sys            4.08

with it.  This is still too slow for the default testsuite timeout of 5
min, but at least a much more reasonable range.

    Rainer