From: law@redhat.com
To: Andrew MacLeod <amacleod@redhat.com>
Cc: Diego Novillo <dnovillo@redhat.com>,
Dale Johannesen <dalej@apple.com>,
gcc mailing list <gcc@gcc.gnu.org>
Subject: Re: [tree-ssa vs lno] who is right?
Date: Fri, 26 Mar 2004 17:48:00 -0000 [thread overview]
Message-ID: <200403261530.i2QFUU0n014162@speedy.slc.redhat.com> (raw)
In-Reply-To: Your message of "26 Mar 2004 08:34:40 EST." <1080308082.12528.27.camel@p4>
In message <1080308082.12528.27.camel@p4>, Andrew MacLeod writes:
>I have some minor changes to copyrename in the queue, but I doubt it
>will affect this. Since there is a constant in the arguments of the PHI,
>it must have been renamed due to a copy between a temp and maxmin_Result
>elsewhere in the program. The hope was that we'd be able to get rid of
>the copy. Looks like not, unless one or more of the PHIs can be
>optimized away. :-)
I'd expect DOM to propagate the constants so that there were no uses
of maxmin_Result_140, maxmin_Result_142, then I'd expect DCE to zap the
useless PHIs.
Alternatively Zdenek's block trivial PHI removal code may zap them.
But again, I think step #1 is to figure out how we got them in the first
place.
jeff
next prev parent reply other threads:[~2004-03-26 15:30 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-26 5:32 Dale Johannesen
2004-03-26 6:34 ` Diego Novillo
2004-03-26 6:35 ` Dale Johannesen
2004-03-26 7:08 ` Diego Novillo
2004-03-26 7:27 ` Andrew Pinski
2004-03-26 16:21 ` Andrew MacLeod
2004-03-26 16:31 ` Diego Novillo
2004-03-26 16:40 ` Andrew MacLeod
2004-03-26 17:48 ` law [this message]
2004-03-26 18:08 ` Andrew MacLeod
2004-03-26 18:10 ` law
2004-03-26 18:49 ` Dale Johannesen
2004-03-26 16:44 ` law
2004-03-26 17:42 ` Diego Novillo
2004-03-26 18:51 ` Zdenek Dvorak
2004-03-26 20:15 ` Dale Johannesen
2004-03-26 21:09 ` Devang Patel
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