[Bug target/113560] Strange code generated when optimizing a multiplication on x86_64

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113560

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Status|UNCONFIRMED                 |NEW
          Component|c++                         |target
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-01-23
             Target|                            |x86_64-*-*

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC thinks the multiplication bu the constant is cheaper this way - are you
sure otherwise?

I see g using a highpart multiply while f uses a widening multiply.