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Re: What happened to -frename-registers?
- From: Ulrich Weigand <weigand at i1 dot informatik dot uni-erlangen dot de>
- To: bonzini at gnu dot org (Paolo Bonzini)
- Cc: weigand at i1 dot informatik dot uni-erlangen dot de (Ulrich Weigand), gcc at gcc dot gnu dot org
- Date: Tue, 29 Jun 2004 14:02:52 +0200 (CEST)
- Subject: Re: What happened to -frename-registers?
Paolo Bonzini wrote:
> > From what I see in the mailing list and bug #15023, the problem
> > appears to be that it exposes target bugs on some platforms.
>
> Another problem was that it is a serious CPU hog (up to 8% CPU time).
IMO that simply means it shouldn't be active at -O1 by default.
Having it on at -O2 (or maybe even -O3 only, as it used to be)
should be OK, in any case better than not having it at all ...
Bye,
Ulrich
--
Dr. Ulrich Weigand
weigand@informatik.uni-erlangen.de