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Re: [patch] Relax assertion in vn_reference_lookup_3
- From: Michael Matz <matz at suse dot de>
- To: Eric Botcazou <ebotcazou at adacore dot com>
- Cc: gcc-patches at gcc dot gnu dot org, Richard Guenther <richard dot guenther at gmail dot com>
- Date: Mon, 2 Nov 2009 14:24:00 +0100 (CET)
- Subject: Re: [patch] Relax assertion in vn_reference_lookup_3
- References: <200910301943.43463.ebotcazou@adacore.com> <200910311636.32233.ebotcazou@adacore.com> <Pine.LNX.4.64.0911021357100.15566@wotan.suse.de> <200911021414.04554.ebotcazou@adacore.com>
Hi,
On Mon, 2 Nov 2009, Eric Botcazou wrote:
> > This has an intermediate temporary of the 24bit type and a conversion,
> > which is why I also question the inconsistency in your original example. :
>
> 24-bit is the precision, not the size:
>
> <unnamed-unsigned:24> D.2702;
> D.2702_2 = s_1(D)->i;
>
> You still have 32-bit size on the LHS vs 24-bit size on the RHS.
Ah, right. Messy. It's still terrible to see a component_ref of size 64,
where the inner aggregate is overall only 48 bit, and even the field_decl
itself is 48 bit. Bah.
Ciao,
Michael.