On Thu, Feb 23, 2006 at 11:00:33AM -0800, Dale Johannesen wrote: > > On Feb 23, 2006, at 8:54 AM, H. J. Lu wrote: > > >When I use -O2 -mtune=pentium4 -ffast-math on SPEC CPU 2K on Linux/x86 > >with gcc 4.2, I get > > > >*** Miscompare of 200.s, see > >/export/spec/src/2000/spec/benchspec/CINT2000/176.gcc/run/00000004/ > >200.s.mis > >*** Miscompare of scilab.s, see > >/export/spec/src/2000/spec/benchspec/CINT2000/176.gcc/run/00000004/ > >scilab.s.mis > > > >Is that a known issue? > > This is what you get if the benchmark source thinks the host is of the > wrong endianness. > Do you have -DHOST_WORDS_BIG_ENDIAN in your config file perhaps?
No. BTW, "-O2 -mtune=pentium4" generates correct results for SPEC CPU 2K. The only difference is -ffast-math. H.J.
