From 580a40a75f8553bd4581f3b15ba1958c09eb3543 Mon Sep 17 00:00:00 2001
From: Stefan Penner <stefan.penner@gmail.com>
Date: Tue, 4 Aug 2015 14:34:43 -0700
Subject: [PATCH 1/3] speed up Meta instantiation

6ms -> noise

turns out there is no 0 cost abstraction in JS yet...
---
 packages/ember-metal/lib/meta.js | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/packages/ember-metal/lib/meta.js b/packages/ember-metal/lib/meta.js
index 44e00bbd5df..1c7a395ebdb 100644
--- a/packages/ember-metal/lib/meta.js
+++ b/packages/ember-metal/lib/meta.js
@@ -44,12 +44,16 @@ let members = {
 };
 
 let memberNames = Object.keys(members);
-let memberProperties = memberNames.map(memberProperty);
 
 function Meta(obj, parentMeta) {
-  // preallocate a slot for each member
-  memberProperties.forEach(prop => this[prop] = undefined);
-
+  this.cache = undefined;
+  this.watching = undefined;
+  this.mixins = undefined;
+  this.bindings = undefined;
+  this.values = undefined;
+  this.deps = undefined;
+  this.chainWatchers = undefined;
+  this.chains = undefined;
   // used only internally
   this.source = obj;
 

From a64e21130631d3314d303545c8fa1435f582632f Mon Sep 17 00:00:00 2001
From: Stefan Penner <stefan.penner@gmail.com>
Date: Tue, 4 Aug 2015 16:34:03 -0700
Subject: [PATCH 2/3] =?UTF-8?q?don=E2=80=99t=20event=20try=20the=20for=20l?=
 =?UTF-8?q?oop=20if=20there=20are=20no=20actions?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 packages/ember-metal/lib/events.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/ember-metal/lib/events.js b/packages/ember-metal/lib/events.js
index e8f20bf56f4..6f609b9bb39 100644
--- a/packages/ember-metal/lib/events.js
+++ b/packages/ember-metal/lib/events.js
@@ -206,7 +206,7 @@ export function sendEvent(obj, eventName, params, actions) {
     actions = meta && meta.matchingListeners(eventName);
   }
 
-  if (!actions) { return; }
+  if (!actions || actions.length === 0) { return; }
 
   for (var i = actions.length - 3; i >= 0; i -= 3) { // looping in reverse for once listeners
     var target = actions[i];

From b6b0739ff8fd3c7df9c7c6ca3a0565ef7b5486c2 Mon Sep 17 00:00:00 2001
From: Stefan Penner <stefan.penner@gmail.com>
Date: Tue, 4 Aug 2015 16:46:57 -0700
Subject: [PATCH 3/3] remove get for an internal property that will never be a
 CP

In one example this removes nearly 8% of gets
---
 packages/ember-views/lib/views/component.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/ember-views/lib/views/component.js b/packages/ember-views/lib/views/component.js
index 7cf2539b34a..5767947860f 100644
--- a/packages/ember-views/lib/views/component.js
+++ b/packages/ember-views/lib/views/component.js
@@ -171,7 +171,7 @@ var Component = View.extend(TargetActionSupport, ComponentTemplateDeprecation, {
 
   _template: computed('templateName', {
     get() {
-      if (get(this, '_deprecatedFlagForBlockProvided')) {
+      if (this._deprecatedFlagForBlockProvided) {
         return true;
       }
       var templateName = get(this, 'templateName');