diff --git a/js/src/methodjit/BytecodeAnalyzer.cpp b/js/src/methodjit/BytecodeAnalyzer.cpp
index 933dda6e178..89439a33dad 100644
--- a/js/src/methodjit/BytecodeAnalyzer.cpp
+++ b/js/src/methodjit/BytecodeAnalyzer.cpp
@@ -71,10 +71,6 @@ BytecodeAnalyzer::analyze(uint32 index)
     jsbytecode *pc = doList[index];
     uint32 stackDepth = ops[pc - script->code].stackDepth;
 
-#ifdef DEBUG
-    bool canAssert = true;
-#endif
-
     for (;;) {
         JSOp op = JSOp(pc[0]);
         OpcodeStatus &status = ops[pc - script->code];
@@ -82,17 +78,6 @@ BytecodeAnalyzer::analyze(uint32 index)
         if (status.visited)
             return true;
 
-#ifdef DEBUG
-        if (assertDepths) {
-            jssrcnote *sn = js_GetSrcNote(script, pc);
-            if (sn && SN_TYPE(sn) == SRC_HIDDEN)
-                canAssert = false;
-
-            JS_ASSERT_IF(canAssert && pc > script->main,
-                         js_ReconstructStackDepth(cx, script, pc) == stackDepth);
-        }
-#endif
-
         status.visited = true;
         status.stackDepth = stackDepth;
 
diff --git a/js/src/methodjit/BytecodeAnalyzer.h b/js/src/methodjit/BytecodeAnalyzer.h
index 0ebe0140394..2ed7f30945c 100644
--- a/js/src/methodjit/BytecodeAnalyzer.h
+++ b/js/src/methodjit/BytecodeAnalyzer.h
@@ -62,27 +62,12 @@ namespace js
         JSScript     *script;
         OpcodeStatus *ops;
         Vector<jsbytecode *, 16, ContextAllocPolicy> doList;
-#ifdef DEBUG
-        bool         assertDepths;
-#endif
 
       public:
         BytecodeAnalyzer(JSContext *cx, JSScript *script)
           : cx(cx), script(script), ops(NULL),
             doList(ContextAllocPolicy(cx))
         {
-#ifdef DEBUG
-            // This takes a very long time with SunSpider's string-tagcloud.
-            if (script->filename) {
-                const char *filename = script->filename;
-                size_t flen = strlen(filename);
-                const char *pat = "string-tagcloud.js";
-                size_t plen = strlen(pat);
-                bool endswith = (plen < flen && 
-                                 memcmp(filename + flen - plen, pat, plen) == 0);
-                assertDepths = !endswith;
-            }
-#endif
         }
         ~BytecodeAnalyzer();