EXTSW             775 nanojit/NativePPC.cpp                 EXTSW(r, r);
EXTSW             986 nanojit/NativePPC.cpp         EXTSW(v, v);    // extend sign destructively, ok since oprnd1 only is 32bit
EXTSW            1034 nanojit/NativePPC.cpp             EXTSW(r, v);