From: Jeffrey A Law <law@cygnus.com>
To: Toon Moene <toon@moene.indiv.nluug.nl>
Cc: egcs@cygnus.com
Subject: Re: -frerun-loop
Date: Fri, 24 Oct 1997 22:37:00 -0000 [thread overview]
Message-ID: <28226.877757946@hurl.cygnus.com> (raw)
In-Reply-To: <9710230552.AA21715@moene.indiv.nluug.nl>
It should be noted that rerunning the loop optimizer seems to
interact nicely with the simplify_giv_expr patch.
The simplify_giv_expr patch can potentially create many insns
one loop level out of a loop with complex GIVs.
Re-running loop allows many of those new insns to be hoisted
out of another loop nest.
I don't know how much gain this is in practice, but it may
be worth playing with.
jeff
next prev parent reply other threads:[~1997-10-24 22:37 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <9710211752.AA19479@moene.indiv.nluug.nl>
1997-10-22 21:33 ` my EGCS status (really Fortran patches) Jeffrey A Law
1997-10-22 22:55 ` Toon Moene
1997-10-22 23:26 ` Jeffrey A Law
1997-10-23 0:47 ` Jeffrey A Law
1997-10-23 10:45 ` Toon Moene
1997-10-23 11:04 ` Jeffrey A Law
1997-10-23 12:18 ` Joe Buck
1997-10-24 22:37 ` Jeffrey A Law [this message]
1997-10-22 22:33 ` my EGCS status " Jeffrey A Law
1997-10-26 9:18 ` Jeffrey A Law
1997-10-27 16:30 ` Jim Wilson
1997-10-27 15:54 ` Jeffrey A Law
1997-10-27 17:21 ` Jim Wilson
1997-10-28 12:35 ` Jeffrey A Law
1997-10-28 12:35 ` Toon Moene
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