[Bug tree-optimization/90271] [missed-optimization] failure to keep variables in registers during "faux" memcpy

[eyalroz at technion dot ac.il]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90271

--- Comment #10 from Eyal Rozenberg <eyalroz at technion dot ac.il> ---
(In reply to rguenther@suse.de from comment #9)
> You'd have to experiment with different GCC versions, but yes.

I was hoping for a more concrete suggestion (which works with multiple GCC
versions)...