[Bug target/80540] gcc ICE at -O2 and above on x86_64-linux-gnu in "assign_by_spills"

[helloqirun at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80540

--- Comment #4 from Qirun Zhang <helloqirun at gmail dot com> ---
(In reply to Martin Liška from comment #2)
> > gcc-4.8.5 crashes at all levels;
> > gcc-4.9 accepts it at all levels;
> 
> I can't find a release that does not ICE w/ -O2.

Hi Martin,

This version works fine.

$ gcc-4.9 -O2 abc.c -c
$ gcc-4.9 --version
gcc-4.9 (Ubuntu 4.9.3-8ubuntu2~14.04) 4.9.3
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.