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Re: RFA: patch to solve PR48455 and improve code size for -Os
- From: Vladimir Makarov <vmakarov at redhat dot com>
- To: Sergey Ostanevich <sergos dot gnu at gmail dot com>
- Cc: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, Jeff Law <law at redhat dot com>
- Date: Thu, 18 Aug 2011 11:17:42 -0400
- Subject: Re: RFA: patch to solve PR48455 and improve code size for -Os
- References: <4E4ACE1F.8090004@redhat.com> <F0FA39DF-869D-4559-8983-6E0EF4F21689@gmail.com>
On 08/18/2011 11:04 AM, Sergey Ostanevich wrote:
16.08.2011, в 23:07, Vladimir Makarov<vmakarov@redhat.com> написал(а):
After a lot of thinking and some experiments, I did not find a better solution to considerably (like on 0.2% - 0.3% on ARM SPEC2000) improve code size than use of non-regional RA for -Os.
did you consider change of compile time because of single region RA?
Yes, one region RA is the fastest one. I guess 1% compile time
improvement although it depends on many factors (target, benchmark etc).