[Bug tree-optimization/61306] [4.10 Regression] wrong code at -Os and above on x86_64-linux-gnu

[thomas.preudhomme at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61306

--- Comment #5 from Thomas Preud'homme <thomas.preudhomme at arm dot com> ---
I have a working patch that also pass bootstrap. I'll do a bit more testing and
post it for review.