Benchmarks spec cpu2006/464.h264ref and cpu2006/482.sphinx3 miscompare its output with 'test' dataset when compiled with trunk GCC revision 121821 at -O2 optimization level.
Binary regression search showed that regression is caused by "More REG_EQ* notes cleanups" patch http://gcc.gnu.org/ml/gcc-patches/2007-02/msg00963.html I'm working on a minimal reproducer. -- Summary: Spec cpu2k6/h264ref and sphinx3 miscompare regression Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: pending AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: grigory_zagorodnev at linux dot intel dot com GCC build triplet: i386-redhat-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30773
