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Annotation of 43BSD/usr.bin/f77/src/f77pass1/optim.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)optim.h     5.1 (Berkeley) 6/7/85
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * structure to hold trees for optimization
        !            11:  */
        !            12: 
        !            13: typedef struct slt {
        !            14:        field           type;
        !            15:        field           flags;
        !            16:        short           lineno;
        !            17:        struct slt      *next, *prev;
        !            18:        struct slt      *nullslot;
        !            19:        expptr          expr;
        !            20:        int             label;
        !            21:        int             *ctlinfo;
        !            22: };
        !            23: 
        !            24: typedef struct slt *Slotp;
        !            25: 
        !            26: extern Slotp   firstslot, lastslot;    /* first, last slots in buffer */
        !            27: extern int     numslots;               /* number of slots */
        !            28: 
        !            29: Slotp newslot(), optbuff(), optinsert();
        !            30: struct Ctlframe *cpframe();
        !            31: 
        !            32: /*
        !            33: **      Structures for cse analysis
        !            34: */
        !            35: 
        !            36: typedef struct IDblock *idptr;
        !            37: typedef struct VALUEnode *valuen;
        !            38: typedef struct IDlist  *idlptr;
        !            39: typedef struct DUPlist *duplptr;
        !            40: typedef struct NODElist *nodelptr;
        !            41: 
        !            42: struct IDblock
        !            43: {
        !            44:        expptr idaddr;    
        !            45:        valuen initval, assgnval;
        !            46:        nodelptr headnodelist;
        !            47:        struct IDblock *next;
        !            48: };           
        !            49: 
        !            50: struct VALUEnode
        !            51: {
        !            52:        expptr opp;
        !            53:        expptr *parent;
        !            54:        int n_dups;
        !            55:        unsigned is_dead : 1;
        !            56:        valuen lc,rc,rs;
        !            57:        idlptr headdeplist;
        !            58:        duplptr headduplist;
        !            59:        struct VALUEnode *next;
        !            60: };
        !            61: 
        !            62: struct IDlist
        !            63: {
        !            64:        idptr idp;
        !            65:        struct IDlist *next;
        !            66: };
        !            67: 
        !            68: struct DUPlist
        !            69: {
        !            70:        expptr *parent;
        !            71:        struct DUPlist *next;
        !            72: };
        !            73: 
        !            74: struct NODElist
        !            75: {
        !            76:        valuen nodep;
        !            77:        struct NODElist *next;
        !            78: };
        !            79: 
        !            80: /*
        !            81:  * structure to hold information on basic blocks
        !            82:  */
        !            83: 
        !            84: 
        !            85: 
        !            86: typedef struct bblock {
        !            87:        Slotp           first, last;
        !            88:        idptr           headid;
        !            89:        valuen          headnode, tailnode;
        !            90:        struct bblock   *next, *prev;
        !            91: };
        !            92: 
        !            93: typedef struct bblock *Bblockp;
        !            94: 
        !            95: extern Bblockp firstblock;             /* first block in buffer */
        !            96: extern Bblockp lastblock;              /* last block in buffer */
        !            97: 
        !            98: 
        !            99: 
        !           100: /* data structure for optloop and regalloc routines */
        !           101: 
        !           102: typedef
        !           103:   struct regnode
        !           104:     {
        !           105:       field vstg;
        !           106:       field vtype;
        !           107:       int memno;
        !           108:       int memoffset;
        !           109:       unsigned isarrayarg : 1;
        !           110:     } REGNODE;

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