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Re: (a+b)+c should be replaced by a+(b+c)

From: Laurent GUERBY <laurent at guerby dot net>
To: Scott Robert Ladd <coyote at coyotegulch dot com>
Cc: Jakub Jelinek <jakub at redhat dot com>, gcc mailing list <gcc at gcc dot gnu dot org>
Date: Thu, 25 Mar 2004 19:54:32 +0100
Subject: Re: (a+b)+c should be replaced by a+(b+c)
References: <Pine.SOL.4.58.0403250711490.18567@yellow.csi.cam.ac.uk> <4062D287.7050100@gnat.com> <Pine.SOL.4.58.0403251240250.18567@yellow.csi.cam.ac.uk> <4062EAFC.4070502@coyotegulch.com> <20040325121927.GO15946@sunsite.ms.mff.cuni.cz> <4062F574.1020807@coyotegulch.com>

On Thu, 2004-03-25 at 16:06, Scott Robert Ladd wrote:
> [dry_sarcasm]
> Well, we can see the -ffast-math *really* helps in this suituation, huh?
> [/dry_sarcasm]

Could you try -funroll-all-loops and may be a prefetch flag? On short
numerical loops this usually makes lots of difference.

Laurent

Follow-Ups:
- Re: (a+b)+c should be replaced by a+(b+c)
  - From: Scott Robert Ladd

References:
- (a+b)+c should be replaced by a+(b+c)
  - From: Joost VandeVondele
- Re: (a+b)+c should be replaced by a+(b+c)
  - From: Robert Dewar
- Re: (a+b)+c should be replaced by a+(b+c)
  - From: Joost VandeVondele
- Re: (a+b)+c should be replaced by a+(b+c)
  - From: Scott Robert Ladd
- Re: (a+b)+c should be replaced by a+(b+c)
  - From: Jakub Jelinek
- Re: (a+b)+c should be replaced by a+(b+c)
  - From: Scott Robert Ladd

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