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Re: [PATCH][RFC] Move IVOPTs closer to RTL expansion
- From: Pat Haugen <pthaugen at linux dot vnet dot ibm dot com>
- To: Richard Biener <rguenther at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Wed, 11 Sep 2013 16:40:11 -0500
- Subject: Re: [PATCH][RFC] Move IVOPTs closer to RTL expansion
- Authentication-results: sourceware.org; auth=none
- References: <alpine dot LNX dot 2 dot 00 dot 1309041115000 dot 20077 at zhemvz dot fhfr dot qr>
On 09/04/2013 04:20 AM, Richard Biener wrote:
Any help with benchmarking this on targets other than x86_64
is appreciated (I'll re-do x86_64).
I ran CPU2000 and CPU2006 on PowerPC comparing the patch. CPU2000 had 3
benchmarks degrade in the 4%-6%range (254.gap, 168.wupwise,
173.applu).CPU2006 showed one benchmark, 410.bwaves, degrading 9%.I have
dug into applu/bwaves and saw nothing directly attributable to your
patch, degradations looked to be caused by idioms/oddities of the
PowerPC architecture related to minor scheduling differences and/or data
location.