[Bug middle-end/100473] O2 vs optimization flags

pinskia at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Fri May 7 16:00:46 GMT 2021


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

           What    |Removed                     |Added
          Component|c                           |middle-end

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #2) 
> I think we've never claimed that -O2 stands for -O1 + specific options,
> similarly to how -O1 certainly is not -O0 + lots of options (even much more
> different, because if (optimize) is very common and is used in gating tests
> of whole pass sets.

Not all optimizations are controlled directly by a flag. Only optimizations
that have a flag are listed in this section.

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