FSUBD            2075 nanojit/NativeARM.cpp         case LIR_fsub:      FSUBD(rr,ra,rb);    break;
FSUBD             927 nanojit/NativeSparc.cpp             FSUBD(ra, rb, rr);
FSUBD             955 nanojit/NativeSparc.cpp         FSUBD(rt, rr, rr);