| // Inferno utils/5c/gc.h |
| // http://code.google.com/p/inferno-os/source/browse/utils/5c/gc.h |
| // |
| // Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. |
| // Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) |
| // Portions Copyright © 1997-1999 Vita Nuova Limited |
| // Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) |
| // Portions Copyright © 2004,2006 Bruce Ellis |
| // Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) |
| // Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others |
| // Portions Copyright © 2009 The Go Authors. All rights reserved. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a copy |
| // of this software and associated documentation files (the "Software"), to deal |
| // in the Software without restriction, including without limitation the rights |
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| // copies of the Software, and to permit persons to whom the Software is |
| // furnished to do so, subject to the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included in |
| // all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| // THE SOFTWARE. |
| |
| #define Z N |
| #define Adr Addr |
| |
| #define D_HI D_NONE |
| #define D_LO D_NONE |
| |
| #define isregtype(t) ((t)>= D_AX && (t)<=D_R15) |
| |
| #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 CLOAD 5 |
| #define CREF 5 |
| #define CINF 1000 |
| #define LOOP 3 |
| |
| typedef struct Reg Reg; |
| typedef struct Rgn Rgn; |
| |
| struct Reg |
| { |
| |
| Bits set; |
| Bits use1; |
| Bits use2; |
| |
| Bits refbehind; |
| Bits refahead; |
| Bits calbehind; |
| Bits calahead; |
| Bits regdiff; |
| Bits act; |
| |
| int32 regu; // register used bitmap |
| int32 rpo; // reverse post ordering |
| int32 active; |
| |
| uint16 loop; // x5 for every loop |
| uchar refset; // diagnostic generated |
| |
| Reg* p1; |
| Reg* p2; |
| Reg* p2link; |
| Reg* s1; |
| Reg* s2; |
| Reg* link; |
| Prog* prog; |
| }; |
| #define R ((Reg*)0) |
| |
| #define NRGN 600 |
| struct Rgn |
| { |
| Reg* enter; |
| short cost; |
| short varno; |
| short regno; |
| }; |
| |
| EXTERN int32 exregoffset; // not set |
| EXTERN int32 exfregoffset; // not set |
| EXTERN Reg* firstr; |
| EXTERN Reg* lastr; |
| EXTERN Reg zreg; |
| EXTERN Reg* freer; |
| EXTERN Reg** rpo2r; |
| EXTERN Rgn region[NRGN]; |
| EXTERN Rgn* rgp; |
| EXTERN int nregion; |
| EXTERN int nvar; |
| EXTERN int32 regbits; |
| EXTERN int32 exregbits; |
| EXTERN Bits externs; |
| EXTERN Bits params; |
| EXTERN Bits consts; |
| EXTERN Bits addrs; |
| EXTERN Bits ovar; |
| EXTERN int change; |
| EXTERN int32 maxnr; |
| EXTERN int32* idom; |
| |
| EXTERN struct |
| { |
| int32 ncvtreg; |
| int32 nspill; |
| int32 nreload; |
| int32 ndelmov; |
| int32 nvar; |
| int32 naddr; |
| } ostats; |
| |
| /* |
| * reg.c |
| */ |
| Reg* rega(void); |
| int rcmp(const void*, const void*); |
| void regopt(Prog*); |
| void addmove(Reg*, int, int, int); |
| Bits mkvar(Reg*, Adr*); |
| void prop(Reg*, Bits, Bits); |
| void loopit(Reg*, int32); |
| void synch(Reg*, Bits); |
| uint32 allreg(uint32, Rgn*); |
| void paint1(Reg*, int); |
| uint32 paint2(Reg*, int); |
| void paint3(Reg*, int, int32, int); |
| void addreg(Adr*, int); |
| void dumpit(char *str, Reg *r0); |
| int noreturn(Prog *p); |
| |
| /* |
| * peep.c |
| */ |
| void peep(void); |
| void excise(Reg*); |
| Reg* uniqp(Reg*); |
| Reg* uniqs(Reg*); |
| int regtyp(Adr*); |
| 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 copyau(Adr*, Adr*); |
| int copysub(Adr*, Adr*, Adr*, int); |
| int copysub1(Prog*, Adr*, Adr*, int); |
| |
| int32 RtoB(int); |
| int32 FtoB(int); |
| int BtoR(int32); |
| int BtoF(int32); |