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From: "venkataramanan.kumar at amd dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/55845] New: 454.calculix miscompares with -march=btver2 -O3 -ffastmath -fschedule-insns -mvzeroupper for test data run Date: Wed, 02 Jan 2013 09:28:00 -0000 [thread overview] Message-ID: <bug-55845-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55845 Bug #: 55845 Summary: 454.calculix miscompares with -march=btver2 -O3 -ffastmath -fschedule-insns -mvzeroupper for test data run Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization AssignedTo: unassigned@gcc.gnu.org ReportedBy: venkataramanan.kumar@amd.com Host: x86_64-unknown-linux-gnu Target: x86_64-unknown-linux-gnu Build: x86_64-unknown-linux-gnu GCC revision used: 194705 Flags used: -march=btver2 -O3 -ffastmath -fschedule-insns -mvzeroupper Observation: (Snip) *** Miscompare of beampic.dat; for details see /local/home/vekumar/specruns/benchspec/CPU2006/454.calculix/run/run_base_test_gcc480_bt_sched.exe_nofma.0000/beampic.dat.mis Error: 1x454.calculix Producing Raw Reports (Snip) On triaging further the file SPOOLES/Utilities/src/Utilities_DV.Utilities_DV.c when compiled with -march=btver2 -O3 -ffastmath -fschedule-insns -mvzeroupper seems to schedule vzeroupper incorrectly. vzeroupper will clobber all ymm registers, so should not be moved arround. Also using -march=corei7-avx seems to have problem. I am drilling down further.
next reply other threads:[~2013-01-02 9:28 UTC|newest] Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-01-02 9:28 venkataramanan.kumar at amd dot com [this message] 2013-01-02 10:10 ` [Bug rtl-optimization/55845] " ubizjak at gmail dot com 2013-01-02 10:15 ` ubizjak at gmail dot com 2013-01-04 6:41 ` vbyakovl23 at gmail dot com 2013-01-04 8:13 ` ubizjak at gmail dot com 2013-01-04 9:12 ` venkataramanan.kumar at amd dot com 2013-01-04 9:20 ` ubizjak at gmail dot com 2013-01-04 9:25 ` venkataramanan.kumar at amd dot com 2013-01-04 9:35 ` [Bug rtl-optimization/55845] [4.8 Regression] " ubizjak at gmail dot com 2013-01-06 13:24 ` ubizjak at gmail dot com 2013-01-06 15:51 ` ubizjak at gmail dot com 2013-01-07 15:46 ` rguenth at gcc dot gnu.org 2013-01-08 18:01 ` jakub at gcc dot gnu.org 2013-01-08 18:04 ` jakub at gcc dot gnu.org 2013-01-15 14:05 ` venkataramanan.kumar at amd dot com
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