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Re: [tree-ssa] Re-enable DFA and SSA passes [patch]
- From: Jason Merrill <jason at redhat dot com>
- To: Diego Novillo <dnovillo at redhat dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Thu, 10 Oct 2002 23:49:01 -0400
- Subject: Re: [tree-ssa] Re-enable DFA and SSA passes [patch]
- References: <20021010190014.GA32661@tornado.toronto.redhat.com>
On Thu, 10 Oct 2002 15:00:14 -0400, Diego Novillo <dnovillo@redhat.com> wrote:
> - Uses an unused bit field from tree_common to mark trees that
> have not been gimplified. This is a temporary hack that we
> need to remove before merging into mainline. It's needed to
> avoid the optimizers touching trees that we cannot gimplify
> (builtins, for instance).
Why doesn't the tree_flags approach work anymore?
> - When removing the SSA structures, the whole function tree is
> traversed stripping every tree of any annotations.
Because of this, I suppose. Why is this necessary?
Jason