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Re: [tree-ssa] Unused variable warnings
- From: Jan Hubicka <jh at suse dot cz>
- To: law at redhat dot com
- Cc: Jan Hubicka <hubicka at ucw dot cz>, Jan Hubicka <jh at suse dot cz>,Richard Henderson <rth at redhat dot com>,Andrew MacLeod <amacleod at redhat dot com>,gcc mailing list <gcc at gcc dot gnu dot org>,Diego Novillo <dnovillo at redhat dot com>, gcc-patches at gcc dot gnu dot org
- Date: Mon, 20 Oct 2003 18:07:42 +0200
- Subject: Re: [tree-ssa] Unused variable warnings
- References: <20031019075227.GS15904@atrey.karlin.mff.cuni.cz> <200310201556.h9KFu08t009605@speedy.slc.redhat.com>
> In message <20031019075227.GS15904@atrey.karlin.mff.cuni.cz>, Jan Hubicka write
> >> If there's really a path were index is uninitialized, then clearly we
> >> want to initialize it to a safe value, both for the branch and the
> >> mainline.
> >
> >Yes, however the path is created by inlining function max_issue and
> >optimizing out & and *. So whether we realize this condition or not
> >depend on how much inlining we do that is somewhat ugly.
> OK.
>
>
> >The path never actually happens in reality (max_issue either finds value
> >and sets it or indicate failure), but we are not smart enought to thread
> >the jumps.
> OK. These certain do happen :(
>
> Let's get this fixed on the mainline. No sense in diverging this code.
OK, thanks.
there is yet another occurence that crept in with Zdenek's tail
recursion patch, I will fix this one as well.
Honza
>
> Jeff
>