[Bug target/117477] Register allocator chooses a slot location instead a new callee saved register and not taking inot account pair allocation

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117477

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-11-17
             Status|UNCONFIRMED                 |WAITING

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Do you have a testcase which comes from some real code that shows the issue or
is this just noticed from the small testcase you produced?

As I mentioned it is a wash but only due to the pair allocation that aarch64
can do. On other targets where the pair allocation does not happen, it is
usually a win.