Archipelago » qemu

        CASE_OP_32_64(andc):

            /* Known-zeros does not imply known-ones.  Therefore unless

               args[2] is constant, we can't infer anything from it.  */

            if (temps[args[2]].state == TCG_TEMP_CONST) {

                mask = ~temps[args[2]].mask;

                goto and_const;

            }

            /* But we certainly know nothing outside args[1] may be set. */

            mask = temps[args[1]].mask;

            break;