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Re: c/9787: optimization bug with 176.gcc from SPECcpu2000


The following reply was made to PR c/9787; it has been noted by GNATS.

From: Janis Johnson <janis187 at us dot ibm dot com>
To: thomas dot anders at blue-cable dot de
Cc: gcc-gnats at gcc dot gnu dot org
Subject: Re: c/9787: optimization bug with 176.gcc from SPECcpu2000
Date: Mon, 24 Feb 2003 16:22:48 -0800

 > The 176.gcc benchmark from the latest SPECcpu2000 V1.2 benchmark suite (www.spec.org/osg/cpu2000/) gives wrong results ("miscompare") when using optimization levels 1, 2 or 3 (e.g. "-O3") and "-march=pentium4" with gcc 3.2.2 (Release). Unfortunately I can't provide the source code here since it's covered under SPEC's license. A SPEC licensee (from SuSE, RedHat and friends) should be looking at this issue.
 
 The source code of the benchmark is GCC and it's covered by
 the GNU General Public License; SPEC can't change that.  The
 input that causes this behavior, however, is a different
 matter.  (This isn't meant to be legal advice.)


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