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* [Bug testsuite/39769] New: vmx tests fail due to reliance on floating point equality
@ 2009-04-14 17:44 meissner at linux dot vnet dot ibm dot com
2009-04-14 17:48 ` [Bug testsuite/39769] " meissner at linux dot vnet dot ibm dot com
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: meissner at linux dot vnet dot ibm dot com @ 2009-04-14 17:44 UTC (permalink / raw)
To: gcc-bugs
3 of the vmx tests (3a-04.c, 3a-04m.c, and 3a-05.c) fail on different powerpc
machines because the test relies on the Vector 2 Raised to the Exponent
Estimate and Vector Reciprocal Estimate instructions producing the exact same
bit value for each machine. Since these instructions are estitmate functions,
different implementations of the powerpc architecture produce different
results. Floating point equality should never have been used for these tests.
I have patches to change the test to see whether the value produces is accurate
to 4 decimal digits using greater than and less than tests, which I will attach
shortly.
--
Summary: vmx tests fail due to reliance on floating point
equality
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: meissner at linux dot vnet dot ibm dot com
GCC build triplet: powerpc64-unknown-linux-gnu
GCC host triplet: powerpc64-unknown-linux-gnu
GCC target triplet: powerpc64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39769
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug testsuite/39769] vmx tests fail due to reliance on floating point equality 2009-04-14 17:44 [Bug testsuite/39769] New: vmx tests fail due to reliance on floating point equality meissner at linux dot vnet dot ibm dot com @ 2009-04-14 17:48 ` meissner at linux dot vnet dot ibm dot com 2009-04-14 22:56 ` meissner at gcc dot gnu dot org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: meissner at linux dot vnet dot ibm dot com @ 2009-04-14 17:48 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from meissner at linux dot vnet dot ibm dot com 2009-04-14 17:48 ------- Created an attachment (id=17637) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17637&action=view) Patch to fix the tests not to use floating point equality. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39769 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug testsuite/39769] vmx tests fail due to reliance on floating point equality 2009-04-14 17:44 [Bug testsuite/39769] New: vmx tests fail due to reliance on floating point equality meissner at linux dot vnet dot ibm dot com 2009-04-14 17:48 ` [Bug testsuite/39769] " meissner at linux dot vnet dot ibm dot com @ 2009-04-14 22:56 ` meissner at gcc dot gnu dot org 2009-04-14 22:57 ` meissner at gcc dot gnu dot org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: meissner at gcc dot gnu dot org @ 2009-04-14 22:56 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from meissner at gcc dot gnu dot org 2009-04-14 22:56 ------- Subject: Bug 39769 Author: meissner Date: Tue Apr 14 22:55:52 2009 New Revision: 146068 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=146068 Log: PR testsuite/39769 Modified: trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/vmx/3a-04.c trunk/gcc/testsuite/gcc.dg/vmx/3a-04m.c trunk/gcc/testsuite/gcc.dg/vmx/3a-05.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39769 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug testsuite/39769] vmx tests fail due to reliance on floating point equality 2009-04-14 17:44 [Bug testsuite/39769] New: vmx tests fail due to reliance on floating point equality meissner at linux dot vnet dot ibm dot com 2009-04-14 17:48 ` [Bug testsuite/39769] " meissner at linux dot vnet dot ibm dot com 2009-04-14 22:56 ` meissner at gcc dot gnu dot org @ 2009-04-14 22:57 ` meissner at gcc dot gnu dot org 2009-04-14 22:58 ` meissner at gcc dot gnu dot org 2009-04-16 18:14 ` pinskia at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: meissner at gcc dot gnu dot org @ 2009-04-14 22:57 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from meissner at gcc dot gnu dot org 2009-04-14 22:57 ------- Subject: Bug 39769 Author: meissner Date: Tue Apr 14 22:56:52 2009 New Revision: 146070 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=146070 Log: PR testsuite/39769 Modified: branches/ibm/power7-meissner/gcc/testsuite/ChangeLog.power7 branches/ibm/power7-meissner/gcc/testsuite/gcc.dg/vmx/3a-04.c branches/ibm/power7-meissner/gcc/testsuite/gcc.dg/vmx/3a-04m.c branches/ibm/power7-meissner/gcc/testsuite/gcc.dg/vmx/3a-05.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39769 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug testsuite/39769] vmx tests fail due to reliance on floating point equality 2009-04-14 17:44 [Bug testsuite/39769] New: vmx tests fail due to reliance on floating point equality meissner at linux dot vnet dot ibm dot com ` (2 preceding siblings ...) 2009-04-14 22:57 ` meissner at gcc dot gnu dot org @ 2009-04-14 22:58 ` meissner at gcc dot gnu dot org 2009-04-16 18:14 ` pinskia at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: meissner at gcc dot gnu dot org @ 2009-04-14 22:58 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from meissner at gcc dot gnu dot org 2009-04-14 22:58 ------- Subject: Bug 39769 Author: meissner Date: Tue Apr 14 22:57:51 2009 New Revision: 146071 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=146071 Log: PR testsuite/39769 Modified: branches/ibm/gcc-4_3-branch/gcc/testsuite/ChangeLog branches/ibm/gcc-4_3-branch/gcc/testsuite/gcc.dg/vmx/3a-04.c branches/ibm/gcc-4_3-branch/gcc/testsuite/gcc.dg/vmx/3a-04m.c branches/ibm/gcc-4_3-branch/gcc/testsuite/gcc.dg/vmx/3a-05.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39769 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug testsuite/39769] vmx tests fail due to reliance on floating point equality 2009-04-14 17:44 [Bug testsuite/39769] New: vmx tests fail due to reliance on floating point equality meissner at linux dot vnet dot ibm dot com ` (3 preceding siblings ...) 2009-04-14 22:58 ` meissner at gcc dot gnu dot org @ 2009-04-16 18:14 ` pinskia at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu dot org @ 2009-04-16 18:14 UTC (permalink / raw) To: gcc-bugs ------- Comment #5 from pinskia at gcc dot gnu dot org 2009-04-16 18:14 ------- Fixed. -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |FIXED Target Milestone|--- |4.5.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39769 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2009-04-16 18:14 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2009-04-14 17:44 [Bug testsuite/39769] New: vmx tests fail due to reliance on floating point equality meissner at linux dot vnet dot ibm dot com 2009-04-14 17:48 ` [Bug testsuite/39769] " meissner at linux dot vnet dot ibm dot com 2009-04-14 22:56 ` meissner at gcc dot gnu dot org 2009-04-14 22:57 ` meissner at gcc dot gnu dot org 2009-04-14 22:58 ` meissner at gcc dot gnu dot org 2009-04-16 18:14 ` pinskia at gcc dot gnu dot org
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