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Re: limited register renaming at -O2
- To: Jan Hubicka <jh at suse dot cz>
- Subject: Re: limited register renaming at -O2
- From: Bernd Schmidt <bernds at redhat dot com>
- Date: Fri, 28 Sep 2001 18:28:36 +0100 (BST)
- cc: <gcc-patches at gcc dot gnu dot org>, <rth at cygnus dot com>, <patches at x86-64 dot org>
> This patch changes register renamer to not rename user variables unless
> new flag messy-debugging is set. Then I can enable it at -O2 (and get
> most of benefit done).
I'm not too happy about this approach. I'd prefer if the debugging output
could be changed to deal with the effects of renaming.
Bernd