From: Toon Moene <toon@moene.indiv.nluug.nl>
To: egcs@cygnus.com
Subject: Re: Reload patch to improve 386 code
Date: Mon, 18 Aug 1997 15:36:01 -0000 [thread overview]
Message-ID: <9708181510.AA20041@moene.indiv.nluug.nl> (raw)
In-Reply-To: Reload patch to improve 386 code
In message <9708181258.AA19853@moene.indiv.nluug.nl> I wrote:
> Isn't this something that would have been solved [ coniunctivus
> irrealis ! ] by live range splitting ?
Jeff:
> Not entirely. live range splitting should significantly
> reduce the number of spills, but it won't always be able
> to completely eliminate them (in theory it can completely
> eliminate them, but in practice it doesn't). Thus you
> still need to deal with spilling registers.
I tried to reply to the following:
[ Bernd Schmidt: ]
> it is
> possible to use register life information to determine
> that certain pseudos are not live across any instructions
> that need reloads, and thus need not be spilled.
i.e. the _effect_ that live range splitting has on spilling; I know
it cannot eliminate it.
Cheers,
Toon.
next reply other threads:[~1997-08-18 15:36 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-08-18 15:36 Toon Moene [this message]
[not found] <Pine.SOL.3.90.970819095143.291G-100000@starsky.informatik.rwth-aachen.de>
1998-09-04 5:03 ` Jeffrey A Law
1998-09-04 5:05 ` Bernd Schmidt
1998-09-04 22:36 ` Joern Rennecke
1998-09-05 4:45 ` Jeffrey A Law
1998-09-05 15:49 ` Joern Rennecke
1998-09-05 15:44 ` Jeffrey A Law
1998-09-06 1:09 ` Mark Mitchell
1998-09-06 1:09 ` Jeffrey A Law
1998-09-07 9:48 ` Bernd Schmidt
1998-09-07 19:09 ` Joern Rennecke
1998-09-07 18:26 ` Jeffrey A Law
1998-09-07 19:09 ` Jeffrey A Law
1998-09-04 21:38 ` Joern Rennecke
1998-09-04 21:38 ` Jeffrey A Law
-- strict thread matches above, loose matches on Subject: below --
1997-08-21 16:51 Problems on PowerPC David Edelsohn
1997-08-21 17:37 ` Reload patch to improve 386 code Bernd Schmidt
1997-08-21 16:51 Joern Rennecke
1997-08-21 15:20 egcs repository Joel Sherrill
1997-08-21 15:47 ` Reload patch to improve 386 code Bernd Schmidt
1997-08-19 19:00 Joern Rennecke
1997-08-19 8:50 Jakub Jelinek
1997-08-19 7:36 egcs: A new compiler project to merge the existing GCC forks (fwd) Robert Wilhelm
1997-08-19 8:08 ` Reload patch to improve 386 code Bernd Schmidt
1997-08-19 8:08 ` Jeffrey A Law
1997-08-19 8:08 ` Bernd Schmidt
1997-08-18 20:47 Mike Meissner
1997-08-18 20:46 Joern Rennecke
1997-08-18 18:55 David S. Miller
1997-08-18 19:09 ` Jeffrey A Law
1997-08-18 15:11 meissner
1997-08-18 14:53 meissner
1997-08-18 14:53 Monday morning Philippe Laliberte
1997-08-18 14:54 ` Reload patch to improve 386 code Jeffrey A Law
1997-08-18 14:53 Toon Moene
1997-08-18 8:13 Test result for 970814 on native sparc-sun-solaris2.5.1 Klaus Kaempf
1997-08-18 8:22 ` Reload patch to improve 386 code Bernd Schmidt
1997-08-18 10:11 ` Bernd Schmidt
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