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Re: [PATCH]: Fix latent bug in tailcall
- From: Diego Novillo <dnovillo at redhat dot com>
- To: Daniel Berlin <dberlin at dberlin dot org>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Wed, 01 Feb 2006 22:00:47 -0500
- Subject: Re: [PATCH]: Fix latent bug in tailcall
- References: <43DFB1E2.3070802@dberlin.org>
Daniel Berlin wrote:
> + /* Parameters that are only defined but never used need not be copied. */
> + def = default_def (param);
> + if (!def || TREE_CODE (def) != SSA_NAME)
> + return false;
> +
Hmm? default_def() should only return NULL or an SSA name.
The rest looks fine.