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From: "rob1weld at aol dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/32180] Paranoia UCB GSL TestFloat libm tests fail - accuracy of recent gcc math poor
Date: Thu, 07 Jun 2007 13:49:00 -0000	[thread overview]
Message-ID: <20070607134850.5915.qmail@sourceware.org> (raw)
In-Reply-To: <bug-32180-13830@http.gcc.gnu.org/bugzilla/>



------- Comment #13 from rob1weld at aol dot com  2007-06-07 13:48 -------
One other thing:

When I build and test the origonal (un-modified) Paranoia with GCC I can
compile with different flags and get different results - but these are
"_similar_" flags :(


1 Defect 1 Flaw
-mmmx -msse -m3dnow

1 Defect
-msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -msse4 -msse4a


The code for "-mmmx", "-msse", and "-m3dnow" produce worse result on the tests
than the other SSE flags - the results should be the same (only the FPU code
should differ and that should not alter the result of math operations since
they are all SSE and not 387).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32180


  parent reply	other threads:[~2007-06-07 13:49 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-06-01 15:56 [Bug c/32180] New: " rob1weld at aol dot com
2007-06-01 16:16 ` [Bug target/32180] " pinskia at gcc dot gnu dot org
2007-06-03 13:16 ` rob1weld at aol dot com
2007-06-03 15:15 ` rob1weld at aol dot com
2007-06-03 16:05 ` rob1weld at aol dot com
2007-06-03 16:35 ` kargl at gcc dot gnu dot org
2007-06-03 21:12 ` jvdelisle at gcc dot gnu dot org
2007-06-04  8:58 ` rob1weld at aol dot com
2007-06-04  9:07 ` rob1weld at aol dot com
2007-06-04  9:16 ` rob1weld at aol dot com
2007-06-04 17:32 ` kargl at gcc dot gnu dot org
2007-06-05 17:22 ` rob1weld at aol dot com
2007-06-07 13:42 ` rob1weld at aol dot com
2007-06-07 13:49 ` rob1weld at aol dot com [this message]
2007-06-08  0:23 ` rob1weld at aol dot com
2007-06-12 17:50 ` rob1weld at aol dot com
2007-06-13  7:53 ` rob1weld at aol dot com
2007-06-13 11:30 ` joseph at codesourcery dot com
2007-06-13 17:53 ` kargl at gcc dot gnu dot org
2007-06-14  8:14 ` rob1weld at aol dot com
2007-06-15 21:23 ` rob1weld at aol dot com
2007-06-15 22:23 ` kargl at gcc dot gnu dot org
2007-06-15 22:43 ` joseph at codesourcery dot com
2007-06-16 18:12 ` rob1weld at aol dot com
2007-06-17 20:52 ` rob1weld at aol dot com
2010-02-20 23:43 ` manu at gcc dot gnu dot org
2010-04-12  1:54 ` rob1weld at aol dot com

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