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- typedef struct Reg Reg;
- typedef struct Rgn Rgn;
- typedef struct Bits Bits;
- typedef struct Var Var;
- #define BITS 5
- #define NVAR (BITS*sizeof(ulong)*8)
- struct Bits
- {
- ulong b[BITS];
- };
- struct Var
- {
- long offset;
- Sym* sym;
- char type;
- char etype;
- };
- struct Reg
- {
- long pc;
- Bits set;
- Bits use1;
- Bits use2;
- Bits refbehind;
- Bits refahead;
- Bits calbehind;
- Bits calahead;
- Bits regdiff;
- Bits act;
- ulong regu;
- long loop; /* could be shorter */
- union
- {
- Reg* log5;
- int active;
- };
- Reg* p1;
- Reg* p2;
- Reg* p2link;
- Reg* s1;
- Reg* s2;
- Reg* link;
- Prog* prog;
- };
- #define R ((Reg*)0)
- struct Rgn
- {
- Reg* enter;
- short costr;
- short costa;
- short varno;
- short regno;
- };
- #define BLOAD(r) band(bnot(r->refbehind), r->refahead)
- #define BSTORE(r) band(bnot(r->calbehind), r->calahead)
- #define LOAD(r) (~r->refbehind.b[z] & r->refahead.b[z])
- #define STORE(r) (~r->calbehind.b[z] & r->calahead.b[z])
- #define bset(a,n) ((a).b[(n)/32]&(1L<<(n)%32))
- #define CLOAD 8
- #define CREF 5
- #define CTEST 2
- #define CXREF 3
- #define CINF 1000
- #define LOOP 3
- Bits externs;
- Bits params;
- Bits addrs;
- Bits zbits;
- ulong regbits;
- #define B_INDIR (1<<0)
- #define B_ADDR (1<<1)
- int mvbits;
- int changer;
- int changea;
- Reg* firstr;
- Reg* lastr;
- Reg zreg;
- Reg* freer;
- Rgn region[NRGN];
- Rgn* rgp;
- Var var[NVAR];
- void peep(void);
- void excise(Reg*);
- Reg* uniqp(Reg*);
- Reg* uniqs(Reg*);
- int findtst(Reg*, Prog*, int);
- int setcc(Prog*, Prog*);
- int compat(Adr*, Adr*);
- int aregind(Adr*);
- int asize(int);
- int usedin(int, Adr*);
- Reg* findccr(Reg*);
- int setccr(Prog*);
- Reg* findop(Reg*, int, int, int);
- int regtyp(int);
- int anyvar(Adr*);
- int subprop(Reg*);
- int copyprop(Reg*);
- int copy1(Adr*, Adr*, Reg*, int);
- int copyu(Prog*, Adr*, Adr*);
- int copyas(Adr*, Adr*);
- int tasas(Adr*, Adr*);
- int copyau(Adr*, Adr*);
- int copysub(Adr*, Adr*, Adr*, Prog*, int);
- ulong RtoB(int);
- ulong AtoB(int);
- ulong FtoB(int);
- int BtoR(ulong);
- int BtoA(ulong);
- int BtoF(ulong);
- Reg* rega(void);
- int rcmp(void*, void*);
- void regopt(Prog*);
- void addmove(Reg*, int, int, int);
- Bits mkvar(Adr*, int);
- void prop(Reg*, Bits, Bits);
- int loopit(Reg*);
- void synch(Reg*, Bits);
- ulong allreg(ulong, Rgn*);
- void paint1(Reg*, int);
- ulong paint2(Reg*, int);
- void paint3(Reg*, int, ulong, int);
- void addreg(Adr*, int);
- /*
- * bits.c
- */
- Bits bor(Bits, Bits);
- Bits band(Bits, Bits);
- Bits bnot(Bits);
- int bany(Bits*);
- int bnum(Bits);
- Bits blsh(int);
- int beq(Bits, Bits);
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