Harmony: optimize Math.clz32.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index d11ff347545489aa55d735e822fbc738a27b8748..b6e8dc5bc8faa3bf21d1f80fb5e920a29ec0f31f 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -231,6 +231,7 @@ class Genesis BASE_EMBEDDED {
   // Installs the contents of the native .js files on the global objects.
   // Used for creating a context from scratch.
   void InstallNativeFunctions();
+  void InstallExperimentalBuiltinFunctionIds();
   void InstallExperimentalNativeFunctions();
   Handle<JSFunction> InstallInternalArray(Handle<JSBuiltinsObject> builtins,
                                           const char* name,
@@ -2060,7 +2061,7 @@ bool Genesis::InstallExperimentalNatives() {
   }
 
   InstallExperimentalNativeFunctions();
-
+  InstallExperimentalBuiltinFunctionIds();
   return true;
 }
 
@@ -2110,6 +2111,15 @@ void Genesis::InstallBuiltinFunctionIds() {
 }
 
 
+void Genesis::InstallExperimentalBuiltinFunctionIds() {
+  HandleScope scope(isolate());
+  if (FLAG_harmony_maths) {
+    Handle<JSObject> holder = ResolveBuiltinIdHolder(native_context(), "Math");
+    InstallBuiltinFunctionId(holder, "clz32", kMathClz32);
+  }
+}
+
+
 // Do not forget to update macros.py with named constant
 // of cache id.
 #define JSFUNCTION_RESULT_CACHE_LIST(F) \