RE: mfix-cortex-a53

[Kyrylo Tkachov <Kyrylo.Tkachov@arm.com>]

Hello,

> -----Original Message-----
> From: Gcc-help <gcc-help-bounces+kyrylo.tkachov=arm.com@gcc.gnu.org> On
> Behalf Of Christer Solskogen via Gcc-help
> Sent: Monday, March 4, 2024 1:09 PM
> To: gcc-help@gcc.gnu.org
> Subject: mfix-cortex-a53
> 
> The mfix-cortex-a53 options(-mfix-cortex-a53-835769 /
> -mno-fix-cortex-a53-835769 and -mfix-cortex-a53-843419/
> -mno-fix-cortex-a53-843419), which of them are used by default? I mean,
> when none of them are used.

By default the fixes will not be applied i.e. the behaviour will be equivalent to -mno-fix-cortex-a53-835769 and -mno-fix-cortex-a53-843419.
However, you (or your compiler vendor) can configure GCC during GCC compile time with the --enable-fix-cortex-a53-843419 or --enable-fix-cortex-a53-835769 options.
In that case the fixes will be applied automatically i.e. behave as if -mfix-cortex-a53-843419 or -mfix-cortex-a53-835769 were specified.
You can find out if your GCC distribution enables these configuration options automatically by running gcc with the "-v" option, and seeing if any of those two --enable-fix* options appear in the configuration options.

Thanks,
Kyrill 

> 
> --
> chs