Re: patch to improve register preferencing in IRA and to *remove regmove* pass

[Vladimir Makarov]

On 10/29/2013 12:44 PM, Joseph S. Myers wrote:
> Please change the .opt entries to
>
> foptimize-register-move
> Common Ignore
> Does nothing. Preserved for backward compatibility.
>
> and
>
> fregmove
> Common Ignore
> Does nothing. Preserved for backward compatibility.
>
> rather than removing them completely.  In general, when removing an option 
> that's purely about optimizations rather than affecting the semantics of 
> the user's source code, it's best to leave it behind as an ignored option 
> like that.
>
Thanks, Joseph.  I modified common.opt accordingly.