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Re: patch to improve register preferencing in IRA and to *remove regmove* pass
- From: Vladimir Makarov <vmakarov at redhat dot com>
- To: "Joseph S. Myers" <joseph at codesourcery dot com>
- Cc: gcc-patches <gcc-patches at gcc dot gnu dot org>
- Date: Tue, 29 Oct 2013 12:53:08 -0400
- Subject: Re: patch to improve register preferencing in IRA and to *remove regmove* pass
- Authentication-results: sourceware.org; auth=none
- References: <526FD06B dot 2060103 at redhat dot com> <Pine dot LNX dot 4 dot 64 dot 1310291641340 dot 15240 at digraph dot polyomino dot org dot uk>
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.