[Bug rtl-optimization/82454] Possible future performance regression in x86 for 64-bit constant expansions

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82454

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-10-09
     Ever confirmed|0                           |1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
__INT64_TYPE__ f1 (__INT64_TYPE__ i)
{
  return (((__INT64_TYPE__)1) << 63) >> i;
}

is already an existing missed optimization.