[Bug pending/30773] New: Spec cpu2k6/h264ref and sphinx3 miscompare regression

["grigory_zagorodnev at linux dot intel dot com" <gcc-bugzilla at gcc dot gnu dot org>]

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