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Re: SSA usage question
- From: Jeffrey A Law <law at redhat dot com>
- To: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>
- Cc: rth at redhat dot com, gcc at gcc dot gnu dot org
- Date: Mon, 07 Jun 2004 07:35:47 -0600
- Subject: Re: SSA usage question
- Organization: Red Hat, Inc
- References: <10406062341.AA03180@vlsi1.ultra.nyu.edu>
- Reply-to: law at redhat dot com
On Sun, 2004-06-06 at 17:41, Richard Kenner wrote:
> Implicit references cannot be put into SSA form, and thus cannot
> be put through the tree optimizer at all. QED.
>
> Since SSA talks about *assignments* and the implicit references are all
> *uses* I don't understand your "proof" above. Can you say more?
There's not a lot of point in saying more -- there's zero chance we're
going to reintroduce implicit references to objects. We had them for
a while and it was a horrible mistake.
You should focus on making those implicit references explicit.
Jeff