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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Sun, 4 Dec 2022 13:07:06 +0000
Message-ID: <CAH6eHdRzTmm+bd2mXxX1E9-tRw9c67ULAk8ccwrJjEK5G2dyUg@mail.gmail.com>
Subject: Re:
To: hongjie wu <hongjiewu1225@gmail.com>
Cc: gcc-help <gcc-help@gcc.gnu.org>
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On Sun, 4 Dec 2022, 08:49 hongjie wu via Gcc-help, <gcc-help@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
> specific compiler options, for example  - fexcess - precision =3D [fast |
> standard] [default], including the default represent=EF=BC=9FOr how to de=
termine?
>         I am looking forward to your favorable replay.
>


See the --help=3D documentation in the manual.

gcc -Q --help=3Doptim

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