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Re: need for instruction attributes (ia64)
- From: Richard Henderson <rth at redhat dot com>
- To: Jan Beulich <JBeulich at novell dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Thu, 13 Jan 2005 13:09:08 -0800
- Subject: Re: need for instruction attributes (ia64)
- References: <s1e62521.063@emea1-mh.id2.novell.com>
On Thu, Jan 13, 2005 at 08:37:05AM +0100, Jan Beulich wrote:
> Perhaps (2) is the most reasonable thing, given that any construct
> loosely like
>
> if (c)
> a = x ? y : z;
> else
> b = i ? j : k;
>
> would benefit from .unc compares.
Indeed, though I don't have any good feeling of how often that happens.
> Now, that all said, would a basic (i.e. without the stuff discussed
> here) patch to add TImode arithmetic still be acceptable for 4.0?
If you can show that the existing support for TImode arithmetic
is broken, or regresses in performance from a previous release.
But otherwise I think we should probably wait.
r~