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Re: [tree-ssa] Work around for an unfortunate fold-const vs. tree-optimizer interaction
- From: Richard Henderson <rth at redhat dot com>
- To: Diego Novillo <dnovillo at redhat dot com>
- Cc: Andrew Macleod <amacleod at redhat dot com>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
- Date: Mon, 10 Nov 2003 14:39:18 -0800
- Subject: Re: [tree-ssa] Work around for an unfortunate fold-const vs. tree-optimizer interaction
- References: <Pine.LNX.4.44.0311061149050.12964-100000@www.eyesopen.com> <87vfpxcink.fsf@egil.codesourcery.com> <1068154239.7012.40.camel@p4> <1068499376.3247.3.camel@frodo.toronto.redhat.com>
On Mon, Nov 10, 2003 at 04:22:56PM -0500, Diego Novillo wrote:
> This would be a big change, for sure, but since all the data flow
> information is there...
Except it's not. You have no idea how the backend is going to
expand stuff. And, more's the point, there's a reason why rtl
ssa turned out to be so hard.
r~