DrSocalkwe3n/luajit
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Add special bytecodes for builtins.

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BC_ISTYPE, BC_ISNUM: fast type checks/coercions.
BC_TGETR, BC_TSETR: fast rawgeti/rawseti, no type checks for table/key.
This commit is contained in:
Mike Pall
2013-02-23 02:09:19 +01:00
parent b359ce804b
commit 73ef845fca
16 changed files with 614 additions and 38 deletions
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13
src/lj_meta.c
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@@ -19,6 +19,7 @@
#include "lj_bc.h"
#include "lj_vm.h"
#include "lj_strscan.h"
#include "lj_lib.h"
/* -- Metamethod handling ------------------------------------------------- */
@@ -423,6 +424,18 @@ TValue *lj_meta_comp(lua_State *L, cTValue *o1, cTValue *o2, int op)
}
}
/* Helper for ISTYPE and ISNUM. Implicit coercion or error. */
void lj_meta_istype(lua_State *L, BCReg ra, BCReg tp)
{
L->top = curr_topL(L);
ra++; tp--;
lua_assert(LJ_DUALNUM || tp != ~LJ_TNUMX); /* ISTYPE -> ISNUM broken. */
if (LJ_DUALNUM && tp == ~LJ_TNUMX) lj_lib_checkint(L, ra);
else if (tp == ~LJ_TNUMX+1) lj_lib_checknum(L, ra);
else if (tp == ~LJ_TSTR) lj_lib_checkstr(L, ra);
else lj_err_argtype(L, ra, lj_obj_itypename[tp]);
}
/* Helper for calls. __call metamethod. */
void lj_meta_call(lua_State *L, TValue *func, TValue *top)
{