[Bug rtl-optimization/80491] [7 Regression] Compiler regression for long-add case.

[vincent-gcc at vinc17 dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80491

--- Comment #16 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> ---
(In reply to Richard Biener from comment #14)
> Fixed for GCC 8.

With gcc-8 (Debian 8.3.0-24) 8.3.0, it is not fixed (OK with -O1, not with
-O3). And there does not seem to be a reference to this bug in the svn log.