On Linux/ia32, revision 147852 http://gcc.gnu.org/ml/gcc-cvs/2009-05/msg00829.html miscompiled 252.eon in SPEC CPU 2K at -O2: Running Benchmarks Running 252.eon ref base o2x87 default *** Miscompare of pixels_out.kajiya, see /export/gnu/import/rrs/spec/2000/spec/benchspec/CINT2000/252.eon/run/00000002/pixels_out.kajiya.mis
Adding -mpc64 fixed the problem.