Choosing the right -march target architecture

[Mason]

On 02/09/2015 12:13, Jonathan Wakely wrote:

> On 2 September 2015 at 08:43, Mason wrote:
>> Is there a way to say:
>> "Use any instruction available for this uarch, but optimize code
>> for this other uarch / class of uarches (mtune=generic)" ??
> 
> Yes, just use both -march and -mtune. e.g.
> 
> -march=pentium3 -mtune-generic

The doc states:

"Specifying -march=cpu-type implies -mtune=cpu-type."

Are you suggesting that -mtune can later be overridden?

In which case order matters (-march first, then -mtune) right?

Regards.