[Bug target/36241] Executable compiled with -m64 almost three times faster than the one compiled with -m32 on Core2Duo

[ubizjak at gmail dot com]

------- Comment #2 from ubizjak at gmail dot com  2008-05-15 09:21 -------
This regression is due to store forwarding penalty:

        ...
        movl    %esi, -408(%ebp)
        movl    %edi, -404(%ebp)
        fldl    -408(%ebp)
        ...


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36241