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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Fri, 9 Dec 2022 14:40:42 +0000
Message-ID: <CAH6eHdQ+hLhJ2wE4EbgoVfZhdFS2MWfS4DE=_DEyg1F0OeCEfw@mail.gmail.com>
Subject: Re: The method of determining the specific assignment of gcc
 optimization options
To: hongjie wu <hongjiewu1225@gmail.com>
Cc: gcc@gcc.gnu.org
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This question belongs on the gcc-help mailing list, not here.

On Fri, 9 Dec 2022 at 12:01, hongjie wu via Gcc <gcc@gcc.gnu.org> wrote:
>
> Dear Sir or Madam=EF=BC=8C
>         I want to know how to obtain optimal level of the value of the

What do you mean by optimal?

They have pros and cons.

> specific compiler options, for example  - fexcess - precision =3D [fast |
> standard] [default], including the default represent=EF=BC=9FOr how to de=
termine?

gcc -Q --help=3Doptim

>         I am looking forward to your favorable replay.