diff --git a/js/src/jstracer.cpp b/js/src/jstracer.cpp
index 516672604bd1..617b7439edfc 100644
--- a/js/src/jstracer.cpp
+++ b/js/src/jstracer.cpp
@@ -5428,7 +5428,7 @@ js_InitJIT(JSTraceMonitor *tm)
     if (!tm->fragmento) {
         JS_ASSERT(!tm->reservedDoublePool);
         Fragmento* fragmento = new (&gc) Fragmento(core, 32);
-        verbose_only(fragmento->labels = new (&gc) LabelMap(core, NULL);)
+        verbose_only(fragmento->labels = new (&gc) LabelMap(core);)
         tm->fragmento = fragmento;
         tm->lirbuf = new (&gc) LirBuffer(fragmento);
 #ifdef DEBUG
@@ -5444,7 +5444,7 @@ js_InitJIT(JSTraceMonitor *tm)
     }
     if (!tm->reFragmento) {
         Fragmento* fragmento = new (&gc) Fragmento(core, 32);
-        verbose_only(fragmento->labels = new (&gc) LabelMap(core, NULL);)
+        verbose_only(fragmento->labels = new (&gc) LabelMap(core);)
         tm->reFragmento = fragmento;
         tm->reLirBuf = new (&gc) LirBuffer(fragmento);
     }
diff --git a/js/src/lirasm/lirasm.cpp b/js/src/lirasm/lirasm.cpp
index e986e683108b..2da1d65d26cd 100644
--- a/js/src/lirasm/lirasm.cpp
+++ b/js/src/lirasm/lirasm.cpp
@@ -691,7 +691,7 @@ main(int argc, char **argv)
 
     Fragmento *fragmento = new (&gc) Fragmento(core, 32);
 #ifdef DEBUG
-    fragmento->labels = new (&gc) LabelMap(core, NULL);
+    fragmento->labels = new (&gc) LabelMap(core);
 #endif
     LirBuffer *lirbuf = new (&gc) LirBuffer(fragmento, NULL);
 #ifdef DEBUG
diff --git a/js/src/nanojit/LIR.cpp b/js/src/nanojit/LIR.cpp
index e8230a6fc3e3..7325ab2087ea 100644
--- a/js/src/nanojit/LIR.cpp
+++ b/js/src/nanojit/LIR.cpp
@@ -2107,8 +2107,8 @@ namespace nanojit
 	#endif /* FEATURE_NANOJIT */
 
 #if defined(NJ_VERBOSE)
-    LabelMap::LabelMap(AvmCore *core, LabelMap* parent)
-        : parent(parent), names(core->gc), addrs(core->config.verbose_addrs), end(buf), core(core)
+    LabelMap::LabelMap(AvmCore *core)
+        : names(core->gc), addrs(core->config.verbose_addrs), end(buf), core(core)
 	{}
 
     LabelMap::~LabelMap()
@@ -2166,16 +2166,10 @@ namespace nanojit
 				return dup(b);
 			}
 			else {
-				if (parent)
-					return parent->format(p);
-
 				sprintf(b, "%p", p);
 				return dup(b);
 			}
 		}
-		if (parent)
-			return parent->format(p);
-
 		sprintf(b, "%p", p);
 		return dup(b);
     }
@@ -2192,15 +2186,6 @@ namespace nanojit
 		strcpy(s, b);
 		return s;
 	}
-
-	// copy all labels to parent, adding newbase to label addresses
-	void LabelMap::promoteAll(const void *newbase)
-	{
-		for (int i=0, n=names.size(); i < n; i++) {
-			void *base = (char*)newbase + (intptr_t)names.keyAt(i);
-			parent->names.put(base, names.at(i));
-		}
-	}
 #endif // NJ_VERBOSE
 }
 	
diff --git a/js/src/nanojit/LIR.h b/js/src/nanojit/LIR.h
index 1bc2241891f4..9acf1d46999b 100644
--- a/js/src/nanojit/LIR.h
+++ b/js/src/nanojit/LIR.h
@@ -452,7 +452,6 @@ namespace nanojit
 	 */
     class LabelMap MMGC_SUBCLASS_DECL
     {
-		LabelMap* parent;
 		class Entry MMGC_SUBCLASS_DECL
 		{
 		public:
@@ -468,13 +467,12 @@ namespace nanojit
         void formatAddr(const void *p, char *buf);
     public:
         avmplus::AvmCore *core;
-        LabelMap(avmplus::AvmCore *, LabelMap* parent);
+        LabelMap(avmplus::AvmCore *);
         ~LabelMap();
         void add(const void *p, size_t size, size_t align, const char *name);
 		void add(const void *p, size_t size, size_t align, avmplus::String*);
 		const char *dup(const char *);
 		const char *format(const void *p);
-		void promoteAll(const void *newbase);
 		void clear();
     };