Subversion Repositories raptor64

/*

 *      68000 C compiler

 *

 *      Copyright 1984, 1985, 1986 Matthew Brandt.

 *  all commercial rights reserved.

 *

 *      This compiler is intended as an instructive tool for personal use. Any

 *      use for profit without the written consent of the author is prohibited.

 *

 *      This compiler may be distributed freely for non-commercial use as long

 *      as this notice stays intact. Please forward any enhancements or questions

 *      to:

 *

 *              Matthew Brandt

 *              Box 920337

 *              Norcross, Ga 30092

 */

/*      expression tree descriptions    */

enum e_node {

        en_void,        /* used for parameter lists */

        en_cbw, en_cbc, en_cbh,

                en_ccw, en_cch, en_chw,

                en_cwl, en_cld, en_cfd,

        en_icon, en_fcon, en_labcon, en_nacon, en_autocon,

                en_c_ref, en_uc_ref, en_h_ref, en_uh_ref,

        en_b_ref, en_w_ref, en_ub_ref, en_uw_ref,

        en_fcall, en_tempref, en_regvar, en_add, en_sub, en_mul, en_mod,

        en_div, en_shl, en_shr, en_shru, en_cond, en_assign,

        en_asadd, en_assub, en_asmul, en_asdiv, en_asmod, en_asrsh, en_asmulu,

        en_aslsh, en_asand, en_asor, en_asxor, en_uminus, en_not, en_compl,

        en_eq, en_ne, en_lt, en_le, en_gt, en_ge,

                en_and, en_or, en_land, en_lor,

        en_xor, en_ainc, en_adec, en_mulu, en_udiv, en_umod, en_ugt,

        en_uge, en_ule, en_ult,

                en_ref, en_ursh,

                en_uwfieldref,en_wfieldref,en_bfieldref,en_ubfieldref,

                en_uhfieldref,en_hfieldref,en_ucfieldref,en_cfieldref

                };

struct enode {

    enum e_node nodetype;

        enum e_bt etype;

        long      esize;

    __int8 constflag;

        __int8 bit_width;

        __int8 bit_offset;

        __int8 scale;

        // The following could be in a value union

    __int64 i;

    double f;

    char  *sp;

    struct enode *p[2];

};

typedef struct enode ENODE;

typedef struct cse {

        struct cse      *next;

        struct enode    *exp;           /* optimizable expression */

        int             uses;           /* number of uses */

        int             duses;          /* number of dereferenced uses */

        short int       voidf;          /* cannot optimize flag */

        short int       reg;            /* AllocateRegisterVarsd register */

        } CSE;