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Optimize lua_touserdata by checking userdata case first

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This commit is contained in:
Petri Häkkinen 2022-05-24 09:55:41 +03:00
parent fcbc012568
commit 22e57a8eab
1 changed files with 4 additions and 6 deletions
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10
VM/src/lapi.cpp
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@ -487,15 +487,13 @@ void* lua_tolightuserdata(lua_State* L, int idx)
void* lua_touserdata(lua_State* L, int idx)
{
StkId o = index2addr(L, idx);
switch (ttype(o))
{
case LUA_TUSERDATA:
// fast-path: check userdata first since it is most likely the expected result
if (ttisuserdata(o))
return uvalue(o)->data;
case LUA_TLIGHTUSERDATA:
else if (ttislightuserdata(o))
return pvalue(o);
default:
else
return NULL;
}
}
void* lua_touserdatatagged(lua_State* L, int idx, int tag)