Inline frequently called Object initializer.

interpreter.ts

@@ -1147,6 +1147,13 @@ module J2ME {
 
             // Resolve method and do the class init check if necessary.
             var calleeMethodInfo = resolveMethod(index, mi.classInfo, isStatic);
+
+            // Fast path for some of the most common interpreter call targets.
+            if (calleeMethodInfo.implKey === "java/lang/Object.<init>.()V") {
+              stack.pop();
+              continue;
+            }
+
             if (isStatic) {
               classInitCheck(calleeMethodInfo.classInfo, lastPC);
               if (U) {

jit/baseline.ts

@@ -12,6 +12,13 @@ module J2ME {
 
   export var baselineCounter = null; // new Metrics.Counter(true);
 
+  /**
+   * Expressions to inline for commonly invoked methods.
+   */
+  var inlineMethods = {
+    "java/lang/Object.<init>.()V": "undefined"
+  };
+
   /**
    * Detects common control flow patterns and tries to emit "if" statements
    * whenever possible.
@@ -650,6 +657,10 @@ module J2ME {
       } else {
         call = mangleClassAndMethod(methodInfo) + "(" + args.join(", ") + ")";
       }
+      if (methodInfo.implKey in inlineMethods) {
+        emitDebugInfoComments && this.emitter.writeLn("// Inlining: " + methodInfo.implKey);
+        call = inlineMethods[methodInfo.implKey];
+      }
       this.needsVariable("re");
       this.emitter.writeLn("re = " + call + ";");
       if (calleeCanYield) {