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Re: [PATCH][RFC] Add -fno-aggressive-loop-optimizations
- From: Richard Biener <rguenther at suse dot de>
- To: Pat Haugen <pthaugen at linux dot vnet dot ibm dot com>
- Cc: gcc-patches at gcc dot gnu dot org, Jakub Jelinek <jakub at redhat dot com>, hjl dot tools at gmail dot com
- Date: Thu, 31 Jan 2013 09:54:49 +0100 (CET)
- Subject: Re: [PATCH][RFC] Add -fno-aggressive-loop-optimizations
- References: <alpine.LNX.2.00.1301291140350.6889@zhemvz.fhfr.qr> <5109579A.7070004@linux.vnet.ibm.com>
On Wed, 30 Jan 2013, Pat Haugen wrote:
> On 01/29/2013 04:53 AM, Richard Biener wrote:
> > I'm curious about the affect of -fno-aggressive-loop-optimizations
> > on SPEC CPU 2006 numbers (not curious enough to try for myself
> > though). Both on extra PASSes for official latest sources
> > (I have no access to those) and on performance.
> The patch/option result in both 464.h264ref and 416.gamess passing (as opposed
> to infinite loop). As for performance, I didn't see any difference outside of
> noise range for both 32-bit and 64-bit runs on PowerPC.
Ok, I'll go ahead and apply the patch then.
Richard.