diff --git a/src/lj_api.c b/src/lj_api.c
index 03be80f9..4a7809bc 100644
--- a/src/lj_api.c
+++ b/src/lj_api.c
@@ -1101,7 +1101,7 @@ LUA_API int lua_yield(lua_State *L, int nresults)
       top->u64 = cframe_multres(cf);
       setcont(top+1, lj_cont_hook);
       setframe_pc(top+1, cframe_pc(cf)-1);
-      setframe_gc(top+2, obj2gco(L));
+      setframe_gc(top+2, obj2gco(L), LJ_TTHREAD);
       setframe_ftsz(top+2, ((char *)(top+3)-(char *)L->base)+FRAME_CONT);
       L->top = L->base = top+3;
 #if LJ_TARGET_X64
diff --git a/src/lj_bcread.c b/src/lj_bcread.c
index 519164ca..cea20e90 100644
--- a/src/lj_bcread.c
+++ b/src/lj_bcread.c
@@ -192,7 +192,7 @@ static void bcread_ktabk(LexState *ls, TValue *o)
     o->u32.hi = bcread_uleb128(ls);
   } else {
     lua_assert(tp <= BCDUMP_KTAB_TRUE);
-    setitype(o, ~tp);
+    setpriV(o, ~tp);
   }
 }
 
diff --git a/src/lj_ccallback.c b/src/lj_ccallback.c
index bef379a5..5fe63a76 100644
--- a/src/lj_ccallback.c
+++ b/src/lj_ccallback.c
@@ -411,6 +411,7 @@ static void callback_conv_args(CTState *cts, lua_State *L)
   int gcsteps = 0;
   CType *ct;
   GCfunc *fn;
+  int fntp;
   MSize ngpr = 0, nsp = 0, maxgpr = CCALL_NARG_GPR;
 #if CCALL_NARG_FPR
   MSize nfpr = 0;
@@ -423,15 +424,17 @@ static void callback_conv_args(CTState *cts, lua_State *L)
     ct = ctype_get(cts, id);
     rid = ctype_cid(ct->info);
     fn = funcV(lj_tab_getint(cts->miscmap, (int32_t)slot));
+    fntp = LJ_TFUNC;
   } else {  /* Must set up frame first, before throwing the error. */
     ct = NULL;
     rid = 0;
     fn = (GCfunc *)L;
+    fntp = LJ_TTHREAD;
   }
   o->u32.lo = LJ_CONT_FFI_CALLBACK;  /* Continuation returns from callback. */
   o->u32.hi = rid;  /* Return type. x86: +(spadj<<16). */
   o++;
-  setframe_gc(o, obj2gco(fn));
+  setframe_gc(o, obj2gco(fn), fntp);
   setframe_ftsz(o, ((char *)(o+1) - (char *)L->base) + FRAME_CONT);
   L->top = L->base = ++o;
   if (!ct)
diff --git a/src/lj_err.c b/src/lj_err.c
index dc2e26f3..a824ee66 100644
--- a/src/lj_err.c
+++ b/src/lj_err.c
@@ -631,7 +631,7 @@ LJ_NOINLINE void lj_err_optype_call(lua_State *L, TValue *o)
   if (((ptrdiff_t)pc & FRAME_TYPE) != FRAME_LUA) {
     const char *tname = lj_typename(o);
     setframe_pc(o, pc);
-    setframe_gc(o, obj2gco(L));
+    setframe_gc(o, obj2gco(L), LJ_TTHREAD);
     L->top = L->base = o+1;
     err_msgv(L, LJ_ERR_BADCALL, tname);
   }
diff --git a/src/lj_frame.h b/src/lj_frame.h
index 2540f4d4..061b396c 100644
--- a/src/lj_frame.h
+++ b/src/lj_frame.h
@@ -24,7 +24,7 @@ enum {
 #define frame_gc(f)		(gcref((f)->fr.func))
 #define frame_ftsz(f)		((ptrdiff_t)(f)->fr.tp.ftsz)
 #define frame_pc(f)		(mref((f)->fr.tp.pcr, const BCIns))
-#define setframe_gc(f, p)	(setgcref((f)->fr.func, (p)))
+#define setframe_gc(f, p, tp)	(setgcref((f)->fr.func, (p)), UNUSED(tp))
 #define setframe_ftsz(f, sz)	((f)->fr.tp.ftsz = (int32_t)(sz))
 #define setframe_pc(f, pc)	(setmref((f)->fr.tp.pcr, (pc)))
 
diff --git a/src/lj_ir.c b/src/lj_ir.c
index 2eabdb4b..0689bc22 100644
--- a/src/lj_ir.c
+++ b/src/lj_ir.c
@@ -392,7 +392,7 @@ void lj_ir_kvalue(lua_State *L, TValue *tv, const IRIns *ir)
   UNUSED(L);
   lua_assert(ir->o != IR_KSLOT);  /* Common mistake. */
   switch (ir->o) {
-  case IR_KPRI: setitype(tv, irt_toitype(ir->t)); break;
+  case IR_KPRI: setpriV(tv, irt_toitype(ir->t)); break;
   case IR_KINT: setintV(tv, ir->i); break;
   case IR_KGC: setgcV(L, tv, ir_kgc(ir), irt_toitype(ir->t)); break;
   case IR_KPTR: case IR_KKPTR: case IR_KNULL:
diff --git a/src/lj_meta.c b/src/lj_meta.c
index 9c11dd86..520c3763 100644
--- a/src/lj_meta.c
+++ b/src/lj_meta.c
@@ -83,7 +83,7 @@ int lj_meta_tailcall(lua_State *L, cTValue *tv)
   copyTV(L, base-1, tv);  /* Replace frame with new object. */
   top->u32.lo = LJ_CONT_TAILCALL;
   setframe_pc(top, pc);
-  setframe_gc(top+1, obj2gco(L));  /* Dummy frame object. */
+  setframe_gc(top+1, obj2gco(L), LJ_TTHREAD);  /* Dummy frame object. */
   setframe_ftsz(top+1, ((char *)(top+2) - (char *)base) + FRAME_CONT);
   L->base = L->top = top+2;
   /*
@@ -355,7 +355,7 @@ TValue * LJ_FASTCALL lj_meta_equal_cd(lua_State *L, BCIns ins)
     o2 = &mref(curr_proto(L)->k, cTValue)[bc_d(ins)];
   } else {
     lua_assert(op == BC_ISEQP);
-    setitype(&tv, ~bc_d(ins));
+    setpriV(&tv, ~bc_d(ins));
     o2 = &tv;
   }
   mo = lj_meta_lookup(L, o1mm, MM_eq);
diff --git a/src/lj_obj.h b/src/lj_obj.h
index 99e2d819..e5724859 100644
--- a/src/lj_obj.h
+++ b/src/lj_obj.h
@@ -43,12 +43,10 @@ typedef struct GCRef {
 #define gcref(r)	((GCobj *)(uintptr_t)(r).gcptr32)
 #define gcrefp(r, t)	((t *)(void *)(uintptr_t)(r).gcptr32)
 #define gcrefu(r)	((r).gcptr32)
-#define gcrefi(r)	((int32_t)(r).gcptr32)
 #define gcrefeq(r1, r2)	((r1).gcptr32 == (r2).gcptr32)
 #define gcnext(gc)	(gcref((gc)->gch.nextgc))
 
 #define setgcref(r, gc)	((r).gcptr32 = (uint32_t)(uintptr_t)&(gc)->gch)
-#define setgcrefi(r, i)	((r).gcptr32 = (uint32_t)(i))
 #define setgcrefp(r, p)	((r).gcptr32 = (uint32_t)(uintptr_t)(p))
 #define setgcrefnull(r)	((r).gcptr32 = 0)
 #define setgcrefr(r, v)	((r).gcptr32 = (v).gcptr32)
@@ -720,6 +718,7 @@ typedef union GCobj {
 #define setitype(o, i)		((o)->it = (i))
 #define setnilV(o)		((o)->it = LJ_TNIL)
 #define setboolV(o, x)		((o)->it = LJ_TFALSE-(uint32_t)(x))
+#define setpriV(o, i)		(setitype((o), (i)))
 
 static LJ_AINLINE void setlightudV(TValue *o, void *p)
 {
@@ -744,9 +743,14 @@ static LJ_AINLINE void setlightudV(TValue *o, void *p)
   UNUSED(L), lua_assert(!tvisgcv(o) || \
   ((~itype(o) == gcval(o)->gch.gct) && !isdead(G(L), gcval(o))))
 
-static LJ_AINLINE void setgcV(lua_State *L, TValue *o, GCobj *v, uint32_t itype)
+static LJ_AINLINE void setgcVraw(TValue *o, GCobj *v, uint32_t itype)
 {
-  setgcref(o->gcr, v); setitype(o, itype); tvchecklive(L, o);
+  setgcref(o->gcr, v); setitype(o, itype);
+}
+
+static LJ_AINLINE void setgcV(lua_State *L, TValue *o, GCobj *v, uint32_t it)
+{
+  setgcVraw(o, v, it); tvchecklive(L, o);
 }
 
 #define define_setV(name, type, tag) \
diff --git a/src/lj_parse.c b/src/lj_parse.c
index 064b9b19..198ddfc9 100644
--- a/src/lj_parse.c
+++ b/src/lj_parse.c
@@ -1684,10 +1684,9 @@ static void expr_bracket(LexState *ls, ExpDesc *v)
 static void expr_kvalue(TValue *v, ExpDesc *e)
 {
   if (e->k <= VKTRUE) {
-    setitype(v, ~(uint32_t)e->k);
+    setpriV(v, ~(uint32_t)e->k);
   } else if (e->k == VKSTR) {
-    setgcref(v->gcr, obj2gco(e->u.sval));
-    setitype(v, LJ_TSTR);
+    setgcVraw(v, obj2gco(e->u.sval), LJ_TSTR);
   } else {
     lua_assert(tvisnumber(expr_numtv(e)));
     *v = *expr_numtv(e);
diff --git a/src/lj_record.c b/src/lj_record.c
index 10d76468..01c09c58 100644
--- a/src/lj_record.c
+++ b/src/lj_record.c
@@ -1891,7 +1891,7 @@ 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, ~rc); ix.key = rc = TREF_PRI(IRT_NIL+rc); break;
+  case BCMpri: setpriV(rcv, ~rc); ix.key = rc = TREF_PRI(IRT_NIL+rc); break;
   case BCMnum: { cTValue *tv = proto_knumtv(J->pt, rc);
     copyTV(J->L, rcv, tv); ix.key = rc = tvisint(tv) ? lj_ir_kint(J, intV(tv)) :
     lj_ir_knumint(J, numV(tv)); } break;
diff --git a/src/lj_snap.c b/src/lj_snap.c
index 8bfbd3d1..2917424f 100644
--- a/src/lj_snap.c
+++ b/src/lj_snap.c
@@ -613,8 +613,7 @@ static void snap_restoreval(jit_State *J, GCtrace *T, ExitState *ex,
       o->u64 = *(uint64_t *)sps;
     } else {
       lua_assert(!irt_ispri(t));  /* PRI refs never have a spill slot. */
-      setgcrefi(o->gcr, *sps);
-      setitype(o, irt_toitype(t));
+      setgcV(J->L, o, (GCobj *)(uintptr_t)*(GCSize *)sps, irt_toitype(t));
     }
   } else {  /* Restore from register. */
     Reg r = regsp_reg(rs);
@@ -632,10 +631,10 @@ static void snap_restoreval(jit_State *J, GCtrace *T, ExitState *ex,
     } else if (LJ_64 && irt_islightud(t)) {
       /* 64 bit lightuserdata which may escape already has the tag bits. */
       o->u64 = ex->gpr[r-RID_MIN_GPR];
+    } else if (irt_ispri(t)) {
+      setpriV(o, irt_toitype(t));
     } else {
-      if (!irt_ispri(t))
-	setgcrefi(o->gcr, ex->gpr[r-RID_MIN_GPR]);
-      setitype(o, irt_toitype(t));
+      setgcV(J->L, o, (GCobj *)ex->gpr[r-RID_MIN_GPR], irt_toitype(t));
     }
   }
 }