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Specialize to prototype for non-monomorphic functions.

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Solves the trace-explosion problem with closure-heavy programming.
This commit is contained in:
Mike Pall
2011-11-20 19:14:39 +01:00
parent cc7a12be93
commit cecbe3c15f
6 changed files with 31 additions and 15 deletions
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4
src/lj_func.c
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@@ -118,6 +118,7 @@ GCfunc *lj_func_newC(lua_State *L, MSize nelems, GCtab *env)
static GCfunc *func_newL(lua_State *L, GCproto *pt, GCtab *env)
{
uint32_t count;
GCfunc *fn = (GCfunc *)lj_mem_newgco(L, sizeLfunc((MSize)pt->sizeuv));
fn->l.gct = ~LJ_TFUNC;
fn->l.ffid = FF_LUA;
@@ -125,6 +126,9 @@ static GCfunc *func_newL(lua_State *L, GCproto *pt, GCtab *env)
/* NOBARRIER: Really a setgcref. But the GCfunc is new (marked white). */
setmref(fn->l.pc, proto_bc(pt));
setgcref(fn->l.env, obj2gco(env));
/* Saturating 3 bit counter (0..7) for created closures. */
count = (uint32_t)pt->flags + PROTO_CLCOUNT;
pt->flags = (uint8_t)(count - ((count >> PROTO_CLC_BITS) & PROTO_CLCOUNT));
return fn;
}