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Re: Tree-SSA self checking infrastructure

From: Richard Henderson <rth at redhat dot com>
To: Jan Hubicka <hubicka at ucw dot cz>
Cc: Jan Hubicka <jh at suse dot cz>, gcc at gcc dot gnu dot org
Date: Wed, 19 Nov 2003 13:26:20 -0800
Subject: Re: Tree-SSA self checking infrastructure
References: <20031119174450.GI11681@kam.mff.cuni.cz> <20031119185648.GA31811@redhat.com> <20031119190152.GP16923@atrey.karlin.mff.cuni.cz>

On Wed, Nov 19, 2003 at 08:01:52PM +0100, Jan Hubicka wrote:
> I am almost done with verify_stmts except for tree sharing, as I am
> still not clear about the tree sharing rules.  (Did I mentioned it in
> original email?)

Yes.  I don't know anything about tree sharing rules.  I expect we
can't share much.

> How complex may the symbolic references look like now?

The only valid argument to an INDIRECT_REF is a gimple_reg.

Symbolic references like &ssaname->a.b.c.d[4].y.z[5][6] is valid.
The string of COMPONENT_REF and ARRAY_REFs all reduce to a single
constant addition.

r~

Follow-Ups:
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References:
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  - From: Jan Hubicka
- Re: Tree-SSA self checking infrastructure
  - From: Richard Henderson
- Re: Tree-SSA self checking infrastructure
  - From: Jan Hubicka

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