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Re: [tree-ssa] Fix profile updating code
- From: Jan Hubicka <jh at suse dot cz>
- To: Richard Henderson <rth at redhat dot com>, Jan Hubicka <jh at suse dot cz>,gcc-patches at gcc dot gnu dot org, dnovillo at redhat dot com, law at redhat dot com
- Date: Fri, 30 Apr 2004 09:43:31 +0200
- Subject: Re: [tree-ssa] Fix profile updating code
- References: <20040417234830.GM2125@kam.mff.cuni.cz> <20040429215700.GC500@redhat.com>
> On Sun, Apr 18, 2004 at 01:48:30AM +0200, Jan Hubicka wrote:
> > The only
> > non-trivial piece is the updating after jump threading that is basically
> > cut&paste from rtl version with few comments added.
>
> If this is largely the same, any chance this could be moved to cfghooks.c?
I was thinking about comonizing it, but it is little bit touchy.
The RTL code is quite, but not exactly the same since one does
redirection in advance and over possibly multiple edges, while the other
does redirection just over one edge.
Is there any chance that RTL jump threading will simply go? It is
memory/CPU hog and Jeff advertises counts that are so little on GCC
bootstrap so I don't think it can pay back.
Honza
>
>
> r~