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Treat the tag of a TValue as unsigned everywhere.

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This commit is contained in:
Mike Pall 2010-04-25 23:21:15 +02:00
parent f396f3d192
commit 41379126a2
7 changed files with 39 additions and 40 deletions
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2
src/lib_base.c
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@ -224,7 +224,7 @@ LJLIB_ASM(tostring) LJLIB_REC(.)
if (tvisnum(o)) {
s = lj_str_fromnum(L, &o->n);
} else if (tvispri(o)) {
s = strV(lj_lib_upvalue(L, -itype(o)));
s = strV(lj_lib_upvalue(L, -(int32_t)itype(o)));
} else {
if (tvisfunc(o) && isffunc(funcV(o)))
lua_pushfstring(L, "function: fast#%d", funcV(o)->c.ffid);

7
src/lj_api.c
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@ -195,9 +195,10 @@ LUA_API int lua_type(lua_State *L, int idx)
} else if (o == niltv(L)) {
return LUA_TNONE;
} else { /* Magic internal/external tag conversion. ORDER LJ_T */
int t = ~itype(o);
lua_assert(itype(o) != LJ_TUPVAL);
return (int)(((t < 8 ? 0x98042110 : 0x7506) >> 4*(t&7)) & 15u);
uint32_t t = ~itype(o);
int tt = (int)(((t < 8 ? 0x98042110 : 0x7506) >> 4*(t&7)) & 15u);
lua_assert(tt != LUA_TNIL || tvisnil(o));
return tt;
}
}

4
src/lj_ir.h
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@ -386,11 +386,11 @@ static LJ_AINLINE IRType itype2irt(const TValue *tv)
return IRT_LIGHTUD;
#endif
else
return cast(IRType, ~uitype(tv));
return cast(IRType, ~itype(tv));
}
#define irt_toitype(t) \
check_exp(!(LJ_64 && irt_islightud((t))), (int32_t)~(uint32_t)irt_type((t)))
check_exp(!(LJ_64 && irt_islightud((t))), ~(uint32_t)irt_type((t)))
#define irt_isguard(t) ((t).irt & IRT_GUARD)
#define irt_ismarked(t) ((t).irt & IRT_MARK)

4
src/lj_meta.c
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@ -285,7 +285,7 @@ TValue *lj_meta_equal(lua_State *L, GCobj *o1, GCobj *o2, int ne)
cTValue *mo = lj_meta_fast(L, tabref(o1->gch.metatable), MM_eq);
if (mo) {
TValue *top;
int it;
uint32_t it;
if (tabref(o1->gch.metatable) != tabref(o2->gch.metatable)) {
cTValue *mo2 = lj_meta_fast(L, tabref(o2->gch.metatable), MM_eq);
if (mo2 == NULL || !lj_obj_equal(mo, mo2))
@ -294,7 +294,7 @@ TValue *lj_meta_equal(lua_State *L, GCobj *o1, GCobj *o2, int ne)
top = curr_top(L);
setcont(top, ne ? lj_cont_condf : lj_cont_condt);
copyTV(L, top+1, mo);
it = ~(int32_t)o1->gch.gct;
it = ~(uint32_t)o1->gch.gct;
setgcV(L, top+2, &o1->gch, it);
setgcV(L, top+3, &o2->gch, it);
return top+2; /* Trigger metamethod call. */

54
src/lj_obj.h
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@ -141,7 +141,7 @@ typedef LJ_ALIGN(8) union TValue {
struct {
LJ_ENDIAN_LOHI(
GCRef gcr; /* GCobj reference (if any). */
, int32_t it; /* Internal object tag. Must overlap MSW of number. */
, uint32_t it; /* Internal object tag. Must overlap MSW of number. */
)
};
struct {
@ -186,42 +186,41 @@ typedef const TValue cTValue;
** GC objects are at the end, table/userdata must be lowest.
** Also check lj_ir.h for similar ordering constraints.
*/
#define LJ_TNIL (-1)
#define LJ_TFALSE (-2)
#define LJ_TTRUE (-3)
#define LJ_TLIGHTUD (-4)
#define LJ_TSTR (-5)
#define LJ_TUPVAL (-6)
#define LJ_TTHREAD (-7)
#define LJ_TPROTO (-8)
#define LJ_TFUNC (-9)
#define LJ_TTRACE (-10)
#define LJ_TTAB (-11)
#define LJ_TUDATA (-12)
#define LJ_TNIL (~0u)
#define LJ_TFALSE (~1u)
#define LJ_TTRUE (~2u)
#define LJ_TLIGHTUD (~3u)
#define LJ_TSTR (~4u)
#define LJ_TUPVAL (~5u)
#define LJ_TTHREAD (~6u)
#define LJ_TPROTO (~7u)
#define LJ_TFUNC (~8u)
#define LJ_TTRACE (~9u)
#define LJ_TTAB (~10u)
#define LJ_TUDATA (~11u)
/* This is just the canonical number type used in some places. */
#define LJ_TNUMX (-13)
#define LJ_TNUMX (~12u)
#if LJ_64
#define LJ_TISNUM ((uint32_t)0xfffeffff)
#define LJ_TISNUM 0xfffeffffu
#else
#define LJ_TISNUM ((uint32_t)LJ_TNUMX)
#define LJ_TISNUM LJ_TNUMX
#endif
#define LJ_TISTRUECOND ((uint32_t)LJ_TFALSE)
#define LJ_TISPRI ((uint32_t)LJ_TTRUE)
#define LJ_TISGCV ((uint32_t)(LJ_TSTR+1))
#define LJ_TISTABUD ((uint32_t)LJ_TTAB)
#define LJ_TISTRUECOND LJ_TFALSE
#define LJ_TISPRI LJ_TTRUE
#define LJ_TISGCV (LJ_TSTR+1)
#define LJ_TISTABUD LJ_TTAB
/* -- TValue getters/setters ---------------------------------------------- */
/* Macros to test types. */
#define itype(o) ((o)->it)
#define uitype(o) ((uint32_t)itype(o))
#define tvisnil(o) (itype(o) == LJ_TNIL)
#define tvisfalse(o) (itype(o) == LJ_TFALSE)
#define tvistrue(o) (itype(o) == LJ_TTRUE)
#define tvisbool(o) (tvisfalse(o) || tvistrue(o))
#if LJ_64
#define tvislightud(o) ((itype(o) >> 15) == -2)
#define tvislightud(o) (((int32_t)itype(o) >> 15) == -2)
#else
#define tvislightud(o) (itype(o) == LJ_TLIGHTUD)
#endif
@ -231,13 +230,12 @@ typedef const TValue cTValue;
#define tvisproto(o) (itype(o) == LJ_TPROTO)
#define tvistab(o) (itype(o) == LJ_TTAB)
#define tvisudata(o) (itype(o) == LJ_TUDATA)
#define tvisnum(o) (uitype(o) <= LJ_TISNUM)
#define tvisnum(o) (itype(o) <= LJ_TISNUM)
#define tvistruecond(o) (uitype(o) < LJ_TISTRUECOND)
#define tvispri(o) (uitype(o) >= LJ_TISPRI)
#define tvistabud(o) (uitype(o) <= LJ_TISTABUD) /* && !tvisnum() */
#define tvisgcv(o) \
((uitype(o) - LJ_TISGCV) > ((uint32_t)LJ_TNUMX - LJ_TISGCV))
#define tvistruecond(o) (itype(o) < LJ_TISTRUECOND)
#define tvispri(o) (itype(o) >= LJ_TISPRI)
#define tvistabud(o) (itype(o) <= LJ_TISTABUD) /* && !tvisnum() */
#define tvisgcv(o) ((itype(o) - LJ_TISGCV) > (LJ_TNUMX - LJ_TISGCV))
/* Special macros to test numbers for NaN, +0, -0, +1 and raw equality. */
#define tvisnan(o) ((o)->n != (o)->n)

6
src/lj_parse.c
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@ -184,7 +184,7 @@ static BCReg const_num(FuncState *fs, ExpDesc *e)
}
/* Add a GC object constant. */
static BCReg const_gc(FuncState *fs, GCobj *gc, int itype)
static BCReg const_gc(FuncState *fs, GCobj *gc, uint32_t itype)
{
lua_State *L = fs->L;
TValue o, *val;
@ -1294,10 +1294,10 @@ static void expr_bracket(LexState *ls, ExpDesc *v)
static void expr_kvalue(TValue *v, ExpDesc *e)
{
if (e->k <= VKTRUE) {
v->it = ~(int32_t)e->k;
setitype(v, ~(uint32_t)e->k);
} else if (e->k == VKSTR) {
setgcref(v->gcr, obj2gco(e->u.sval));
v->it = LJ_TSTR;
setitype(v, LJ_TSTR);
} else {
lua_assert(e->k == VKNUM);
setnumV(v, expr_numV(e));

2
src/lj_record.c
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@ -1969,7 +1969,7 @@ void lj_record_ins(jit_State *J)
switch (bcmode_c(op)) {
case BCMvar:
copyTV(J->L, rcv, &lbase[rc]); ix.key = rc = getslot(J, rc); break;
case BCMpri: setitype(rcv, (int32_t)~rc); rc = TREF_PRI(IRT_NIL+rc); break;
case BCMpri: setitype(rcv, ~rc); rc = TREF_PRI(IRT_NIL+rc); break;
case BCMnum: { lua_Number n = proto_knum(J->pt, rc);
setnumV(rcv, n); ix.key = rc = lj_ir_knumint(J, n); } break;
case BCMstr: { GCstr *s = gco2str(proto_kgc(J->pt, ~(ptrdiff_t)rc));