This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [tree-ssa] Unused variable warnings
- From: law at redhat dot com
- To: Jan Hubicka <hubicka at ucw dot cz>
- Cc: 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 09:56:00 -0600
- Subject: Re: [tree-ssa] Unused variable warnings
- Reply-to: law at redhat dot 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.
Jeff