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Re: [RFC] Merge criteria for tree-ssa
- From: Diego Novillo <dnovillo at redhat dot com>
- To: Paolo Bonzini <bonzini at gnu dot org>
- Cc: "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
- Date: Wed, 04 Feb 2004 11:39:21 -0500
- Subject: Re: [RFC] Merge criteria for tree-ssa
- Organization: Red Hat Canada
- References: <002301c3eb3b$45612ca0$8f41af83@bushmill>
On Wed, 2004-02-04 at 11:23, Paolo Bonzini wrote:
> > - Bootstrap times within 1-5% of mainline.
>
> I'd not be as strong as this unless you indend to prune some RTL optimizers
> before tree-ssa is merged. We can probably win at least 5% simply by
> removing addressof and constant_p_rtx (which are low hanging fruit even for
> a beginner as me) -- and maybe cse1. For a merge that has so many new lines
> of code, I feel this contrasts somewhat with the request of having SPEC with
> 3% of mainline.
>
We're at about 10% of mainline. Though the times are trickier to
compare because we bootstrap g95 instead of g77 and build more
libraries.
> > - POOMA, DLV and MICO compile times within 1-> 5% of mainline.
> >
> > - Associated PRs: 13776, 13775.
>
> Note that 13775 is influenced by 13931 which is a backend (combiner)
> regression marked as critical for 3.4.0
>
OK.
Thanks. Diego.