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Re: RFA: autoincrement patches for gcc 4 - updated patch
- From: Richard Henderson <rth at redhat dot com>
- To: Bernd Schmidt <bernds_cb1 at t-online dot de>
- Cc: Joern RENNECKE <joern dot rennecke at st dot com>, gcc-patches at gcc dot gnu dot org
- Date: Tue, 17 May 2005 12:17:49 -0700
- Subject: Re: RFA: autoincrement patches for gcc 4 - updated patch
- References: <421F4698.firstname.lastname@example.org> <427136AB.email@example.com> <20050517025434.GB31389@redhat.com> <4289C770.firstname.lastname@example.org>
On Tue, May 17, 2005 at 12:29:04PM +0200, Bernd Schmidt wrote:
> Ugh. I worked on this code back when I was at Red Hat, and as far as I
> recall it never worked correctly in any of its incarnations. Also, the
> cost estimates are pretty sh specific.
Do you have specific concerns?
The way I see it, Joern is pretty much the only person willing to care
about auto-increment optimization, since it touches so few of our targets.
We can either leave him on his branch forever, or let him maintain the
same code in mainline.
Certainly he'll be on the hook to fix things if ARM breaks or begins
sucking, but at least one comment leads me to believe he's tested that
at least in passing.
About the only thing that occurs to me now is to wonder if all the data
flow chain building could instead be done with the df.h interface. But
since I don't know df.h very well, I don't have any specific suggestions.