This is the mail archive of the
libstdc++@gcc.gnu.org
mailing list for the libstdc++ project.
Re: Optimising std::find on x86 and PPC
- From: Paolo Carlini <pcarlini at suse dot de>
- To: Paolo Carlini <pcarlini at suse dot de>
- Cc: Theodore Papadopoulo <Theodore dot Papadopoulo at sophia dot inria dot fr>,Chris Jefferson <caj at cs dot york dot ac dot uk>,libstdc++ <libstdc++ at gcc dot gnu dot org>,Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>
- Date: Tue, 14 Dec 2004 21:33:19 +0100
- Subject: Re: Optimising std::find on x86 and PPC
- References: <200412141909.iBEJ9XZ7027097@mururoa.inria.fr> <41BF4753.3070803@suse.de>
Paolo Carlini wrote:
Hi Theodore and thanks for the interesting analysis.
I would like to add, that both gcc3.3.3 and other compilers are
definitely able to unroll the loop at issue, therefore I'm tempted to
consider the current behavior just a serious (performance) regression
(i.e., correctness vs aliasing and other subtleties should not be in the
way)
Paolo.