[Bug target/125636] [missed optimization] HImode byte-extend from memory causes partial-register-write stall on modern x86-64

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125636

Drea Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
   Last reconfirmed|                            |2026-06-06
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
             Target|                            |x86_64

--- Comment #5 from Drea Pinski <pinskia at gcc dot gnu.org> ---
just doing a pass which does this transformation seems like an either a
peephole2 type of transformation or one that can be done with out a new pass.