/* SHORT-CUT ALERT! */
/*      if (xsbypass && isGV(imp_msv) && CvXSUB(GvCV(imp_msv))) {

            I32 markix = TOPMARK;
            CV *xscv   = GvCV(imp_msv);
            (void)(*CvXSUB(xscv))(xscv)

            if (gimme == G_SCALAR) {    
                if (++markix != stack_sp - stack_base ) {
                    if (markix > stack_sp - stack_base)
                         *(stack_base + markix) = &sv_undef;
                    else *(stack_base + markix) = *stack_sp;
                    stack_sp = stack_base + markix;
                }
                outitems = 1;
            }
            else {
                outitems = stack_sp - (stack_base + markix);
            }

        }
        else {*/
            outitems = perl_call_sv(isGV(imp_msv) ? (SV*)GvCV(imp_msv) : imp_msv, gimme);
/*      }*/