[Bug middle-end/92308] Gimple passes could do a better job of forming address CSEs

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92308

--- Comment #3 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 4 Nov 2019, rearnsha at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92308
> 
> --- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
> Very few micro-architectures would benefit from auto-inc style addressing in a
> sequence like this.

I'd expect embedded in-order designs to benefit here with -Os
(mostly with larger sequences where the immediate offset doesn't fit
the encoding space for a comparable size instruction)