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Re: Loop optimizer issues
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Steven Bosscher <s dot bosscher at student dot tudelft dot nl>
- Cc: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>, Diego Novillo <dnovillo at redhat dot com>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>, Richard Henderson <rth at redhat dot com>, Jason Merrill <jason at redhat dot com>, pop at gauvain dot u-strasbg dot fr, Jan Hubicka <jh at suse dot cz>, Daniel Berlin <dberlin at dberlin dot org>
- Date: Sun, 27 Jul 2003 19:12:15 -0400
- Subject: Re: Loop optimizer issues
>>>>> Steven Bosscher writes:
Steven> Also, look at the deficiencies list. Can all those missing pieces be
Steven> provided in time for 3.4? (Do they make a difference?)
The current "new" loop unroller optimizer already has a number of
deficiencies on the GCC 3.4 trunk. The question is whether this rewrite
addresses some of those regressions as good or better than reverting to
the old unroller on the trunk. In other words, this is new functionality,
but is it also a regression fix early in Stage 2 of development?
David