[Bug target/62011] False Data Dependency in popcnt instruction

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62011

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Target|X86_64-*-*                  |x86_64-*-*, i?86-*-*

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Please clarify - this is a defect in the CPU?  Can you point to an official
errata?

In which case we might want to adjust the scheduler description used for
GENERIC tuning (and for the specific broken CPUs).  Not sure if we want to
disable popcnt use completely.