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Re: Comparison of Itanium gcc 4.1 and 4.2 on Spec2000
- From: Mark Mitchell <mark at codesourcery dot com>
- To: "Vladimir N. Makarov" <vmakarov at redhat dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Fri, 23 Feb 2007 07:59:56 -0800
- Subject: Re: Comparison of Itanium gcc 4.1 and 4.2 on Spec2000
- References: <45DEF8C4.6020409@redhat.com>
Vladimir N. Makarov wrote:
> Here is the comparison of 4.1 branch and 4.2 branch. In brief, 4.2
> has 0.47% better performance in SPECInt2000 and 2.2% better
> performance in SPECFP2000.
Thanks!
I assume that is with the aliasing safety patches turned on, i.e.,
current state of the 4.2 branch? Are you able to try reverting the
aliasing patches to see how much of an impact they have on Itanium? It
would be interesting to know how that compares with the 4% on IA32.
Thanks,
--
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713