711 static int constfolding (OpCode op, expdesc *e1, expdesc *e2) {  in constfolding()  argument
713   if (!isnumeral(e1) || !isnumeral(e2)) return 0;  in constfolding()
714   if ((op == OP_DIV || op == OP_MOD) && e2->u.nval == 0)  in constfolding()
719   if (op == OP_DIV && e1->u.nval == INT64_MIN && e2->u.nval == -1)  in constfolding()
721   r = luaO_arith(op - OP_ADD + LUA_OPADD, e1->u.nval, e2->u.nval);  in constfolding()
728                        expdesc *e1, expdesc *e2, int line) {  in codearith()  argument
729   if (constfolding(op, e1, e2))  in codearith()
732     int o2 = (op != OP_UNM && op != OP_LEN) ? luaK_exp2RK(fs, e2) : 0;  in codearith()
736       freeexp(fs, e2);  in codearith()
739       freeexp(fs, e2);  in codearith()
750                                                           expdesc *e2) {  in codecomp()  argument
752   int o2 = luaK_exp2RK(fs, e2);  in codecomp()
753   freeexp(fs, e2);  in codecomp()
766   expdesc e2;  in luaK_prefix()  local
767   e2.t = e2.f = NO_JUMP; e2.k = VKNUM; e2.u.nval = 0;  in luaK_prefix()
774         codearith(fs, OP_UNM, e, &e2, line);  in luaK_prefix()
781       codearith(fs, OP_LEN, e, &e2, line);  in luaK_prefix()
817                   expdesc *e1, expdesc *e2, int line) {  in luaK_posfix()  argument
821       luaK_dischargevars(fs, e2);  in luaK_posfix()
822       luaK_concat(fs, &e2->f, e1->f);  in luaK_posfix()
823       *e1 = *e2;  in luaK_posfix()
828       luaK_dischargevars(fs, e2);  in luaK_posfix()
829       luaK_concat(fs, &e2->t, e1->t);  in luaK_posfix()
830       *e1 = *e2;  in luaK_posfix()
834       luaK_exp2val(fs, e2);  in luaK_posfix()
835       if (e2->k == VRELOCABLE && GET_OPCODE(getcode(fs, e2)) == OP_CONCAT) {  in luaK_posfix()
836         lua_assert(e1->u.info == GETARG_B(getcode(fs, e2))-1);  in luaK_posfix()
838         SETARG_B(getcode(fs, e2), e1->u.info);  in luaK_posfix()
839         e1->k = VRELOCABLE; e1->u.info = e2->u.info;  in luaK_posfix()
842         luaK_exp2nextreg(fs, e2);  /* operand must be on the 'stack' */  in luaK_posfix()
843         codearith(fs, OP_CONCAT, e1, e2, line);  in luaK_posfix()
849       codearith(fs, cast(OpCode, op - OPR_ADD + OP_ADD), e1, e2, line);  in luaK_posfix()
853       codecomp(fs, cast(OpCode, op - OPR_EQ + OP_EQ), 1, e1, e2);  in luaK_posfix()
857       codecomp(fs, cast(OpCode, op - OPR_NE + OP_EQ), 0, e1, e2);  in luaK_posfix()