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Diffstat (limited to '3rdparty/lua/src/lj_iropt.h')
| -rw-r--r-- | 3rdparty/lua/src/lj_iropt.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/3rdparty/lua/src/lj_iropt.h b/3rdparty/lua/src/lj_iropt.h new file mode 100644 index 0000000..a74f018 --- /dev/null +++ b/3rdparty/lua/src/lj_iropt.h @@ -0,0 +1,161 @@ +/* +** Common header for IR emitter and optimizations. +** Copyright (C) 2005-2013 Mike Pall. See Copyright Notice in luajit.h +*/ + +#ifndef _LJ_IROPT_H +#define _LJ_IROPT_H + +#include <stdarg.h> + +#include "lj_obj.h" +#include "lj_jit.h" + +#if LJ_HASJIT +/* IR emitter. */ +LJ_FUNC void LJ_FASTCALL lj_ir_growtop(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_ir_emit(jit_State *J); + +/* Save current IR in J->fold.ins, but do not emit it (yet). */ +static LJ_AINLINE void lj_ir_set_(jit_State *J, uint16_t ot, IRRef1 a, IRRef1 b) +{ + J->fold.ins.ot = ot; J->fold.ins.op1 = a; J->fold.ins.op2 = b; +} + +#define lj_ir_set(J, ot, a, b) \ + lj_ir_set_(J, (uint16_t)(ot), (IRRef1)(a), (IRRef1)(b)) + +/* Get ref of next IR instruction and optionally grow IR. +** Note: this may invalidate all IRIns*! +*/ +static LJ_AINLINE IRRef lj_ir_nextins(jit_State *J) +{ + IRRef ref = J->cur.nins; + if (LJ_UNLIKELY(ref >= J->irtoplim)) lj_ir_growtop(J); + J->cur.nins = ref + 1; + return ref; +} + +/* Interning of constants. */ +LJ_FUNC TRef LJ_FASTCALL lj_ir_kint(jit_State *J, int32_t k); +LJ_FUNC void lj_ir_k64_freeall(jit_State *J); +LJ_FUNC TRef lj_ir_k64(jit_State *J, IROp op, cTValue *tv); +LJ_FUNC cTValue *lj_ir_k64_find(jit_State *J, uint64_t u64); +LJ_FUNC TRef lj_ir_knum_u64(jit_State *J, uint64_t u64); +LJ_FUNC TRef lj_ir_knumint(jit_State *J, lua_Number n); +LJ_FUNC TRef lj_ir_kint64(jit_State *J, uint64_t u64); +LJ_FUNC TRef lj_ir_kgc(jit_State *J, GCobj *o, IRType t); +LJ_FUNC TRef lj_ir_kptr_(jit_State *J, IROp op, void *ptr); +LJ_FUNC TRef lj_ir_knull(jit_State *J, IRType t); +LJ_FUNC TRef lj_ir_kslot(jit_State *J, TRef key, IRRef slot); + +#if LJ_64 +#define lj_ir_kintp(J, k) lj_ir_kint64(J, (uint64_t)(k)) +#else +#define lj_ir_kintp(J, k) lj_ir_kint(J, (int32_t)(k)) +#endif + +static LJ_AINLINE TRef lj_ir_knum(jit_State *J, lua_Number n) +{ + TValue tv; + tv.n = n; + return lj_ir_knum_u64(J, tv.u64); +} + +#define lj_ir_kstr(J, str) lj_ir_kgc(J, obj2gco((str)), IRT_STR) +#define lj_ir_ktab(J, tab) lj_ir_kgc(J, obj2gco((tab)), IRT_TAB) +#define lj_ir_kfunc(J, func) lj_ir_kgc(J, obj2gco((func)), IRT_FUNC) +#define lj_ir_kptr(J, ptr) lj_ir_kptr_(J, IR_KPTR, (ptr)) +#define lj_ir_kkptr(J, ptr) lj_ir_kptr_(J, IR_KKPTR, (ptr)) + +/* Special FP constants. */ +#define lj_ir_knum_zero(J) lj_ir_knum_u64(J, U64x(00000000,00000000)) +#define lj_ir_knum_one(J) lj_ir_knum_u64(J, U64x(3ff00000,00000000)) +#define lj_ir_knum_tobit(J) lj_ir_knum_u64(J, U64x(43380000,00000000)) + +/* Special 128 bit SIMD constants. */ +#define lj_ir_knum_abs(J) lj_ir_k64(J, IR_KNUM, LJ_KSIMD(J, LJ_KSIMD_ABS)) +#define lj_ir_knum_neg(J) lj_ir_k64(J, IR_KNUM, LJ_KSIMD(J, LJ_KSIMD_NEG)) + +/* Access to constants. */ +LJ_FUNC void lj_ir_kvalue(lua_State *L, TValue *tv, const IRIns *ir); + +/* Convert IR operand types. */ +LJ_FUNC TRef LJ_FASTCALL lj_ir_tonumber(jit_State *J, TRef tr); +LJ_FUNC TRef LJ_FASTCALL lj_ir_tonum(jit_State *J, TRef tr); +LJ_FUNC TRef LJ_FASTCALL lj_ir_tostr(jit_State *J, TRef tr); + +/* Miscellaneous IR ops. */ +LJ_FUNC int lj_ir_numcmp(lua_Number a, lua_Number b, IROp op); +LJ_FUNC int lj_ir_strcmp(GCstr *a, GCstr *b, IROp op); +LJ_FUNC void lj_ir_rollback(jit_State *J, IRRef ref); + +/* Emit IR instructions with on-the-fly optimizations. */ +LJ_FUNC TRef LJ_FASTCALL lj_opt_fold(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_cse(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_cselim(jit_State *J, IRRef lim); + +/* Special return values for the fold functions. */ +enum { + NEXTFOLD, /* Couldn't fold, pass on. */ + RETRYFOLD, /* Retry fold with modified fins. */ + KINTFOLD, /* Return ref for int constant in fins->i. */ + FAILFOLD, /* Guard would always fail. */ + DROPFOLD, /* Guard eliminated. */ + MAX_FOLD +}; + +#define INTFOLD(k) ((J->fold.ins.i = (k)), (TRef)KINTFOLD) +#define INT64FOLD(k) (lj_ir_kint64(J, (k))) +#define CONDFOLD(cond) ((TRef)FAILFOLD + (TRef)(cond)) +#define LEFTFOLD (J->fold.ins.op1) +#define RIGHTFOLD (J->fold.ins.op2) +#define CSEFOLD (lj_opt_cse(J)) +#define EMITFOLD (lj_ir_emit(J)) + +/* Load/store forwarding. */ +LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_aload(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_hload(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_uload(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_fload(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_xload(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_tab_len(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_fwd_hrefk(jit_State *J); +LJ_FUNC int LJ_FASTCALL lj_opt_fwd_href_nokey(jit_State *J); +LJ_FUNC int LJ_FASTCALL lj_opt_fwd_tptr(jit_State *J, IRRef lim); +LJ_FUNC int lj_opt_fwd_wasnonnil(jit_State *J, IROpT loadop, IRRef xref); + +/* Dead-store elimination. */ +LJ_FUNC TRef LJ_FASTCALL lj_opt_dse_ahstore(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_dse_ustore(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_dse_fstore(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_dse_xstore(jit_State *J); + +/* Narrowing. */ +LJ_FUNC TRef LJ_FASTCALL lj_opt_narrow_convert(jit_State *J); +LJ_FUNC TRef LJ_FASTCALL lj_opt_narrow_index(jit_State *J, TRef key); +LJ_FUNC TRef LJ_FASTCALL lj_opt_narrow_toint(jit_State *J, TRef tr); +LJ_FUNC TRef LJ_FASTCALL lj_opt_narrow_tobit(jit_State *J, TRef tr); +#if LJ_HASFFI +LJ_FUNC TRef LJ_FASTCALL lj_opt_narrow_cindex(jit_State *J, TRef key); +#endif +LJ_FUNC TRef lj_opt_narrow_arith(jit_State *J, TRef rb, TRef rc, + TValue *vb, TValue *vc, IROp op); +LJ_FUNC TRef lj_opt_narrow_unm(jit_State *J, TRef rc, TValue *vc); +LJ_FUNC TRef lj_opt_narrow_mod(jit_State *J, TRef rb, TRef rc, TValue *vc); +LJ_FUNC TRef lj_opt_narrow_pow(jit_State *J, TRef rb, TRef rc, TValue *vc); +LJ_FUNC IRType lj_opt_narrow_forl(jit_State *J, cTValue *forbase); + +/* Optimization passes. */ +LJ_FUNC void lj_opt_dce(jit_State *J); +LJ_FUNC int lj_opt_loop(jit_State *J); +#if LJ_SOFTFP || (LJ_32 && LJ_HASFFI) +LJ_FUNC void lj_opt_split(jit_State *J); +#else +#define lj_opt_split(J) UNUSED(J) +#endif +LJ_FUNC void lj_opt_sink(jit_State *J); + +#endif + +#endif |