[Bug rtl-optimization/48696] Horrible bitfield code generation on x86

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48696

--- Comment #21 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 20 Dec 2024, ptomsich at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48696
> 
> ptomsich at gcc dot gnu.org changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |ptomsich at gcc dot gnu.org
> 
> --- Comment #20 from ptomsich at gcc dot gnu.org ---
> (In reply to Konstantinos Eleftheriou from comment #19)
> > The two loads could be optimized, given that the small load is contained in
> > the larger one. This could be handled by "reload" if we extend the size of
> > the small load to the size of the large one.
> 
> Note that we are investigating to add the necessary infrastructure in the
> store-forward-avoidance pass to merge the two differently-sized loads.

This particular case should of course be code-generated more efficiently
from the start