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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/167966">167966</a></dd>
<dt>Author</dt> <dd>lforschler@apple.com</dd>
<dt>Date</dt> <dd>2014-04-29 16:20:38 -0700 (Tue, 29 Apr 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Rollout <a href="http://trac.webkit.org/projects/webkit/changeset/167889">r167889</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#tagsSafari53832LayoutTestsChangeLog">tags/Safari-538.32/LayoutTests/ChangeLog</a></li>
<li><a href="#tagsSafari53832SourceJavaScriptCoreChangeLog">tags/Safari-538.32/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#tagsSafari53832SourceJavaScriptCoreruntimeJSPropertyNameIteratorcpp">tags/Safari-538.32/Source/JavaScriptCore/runtime/JSPropertyNameIterator.cpp</a></li>
<li><a href="#tagsSafari53832SourceJavaScriptCoreruntimePropertyMapHashTableh">tags/Safari-538.32/Source/JavaScriptCore/runtime/PropertyMapHashTable.h</a></li>
<li><a href="#tagsSafari53832SourceJavaScriptCoreruntimeStructurecpp">tags/Safari-538.32/Source/JavaScriptCore/runtime/Structure.cpp</a></li>
<li><a href="#tagsSafari53832SourceJavaScriptCoreruntimeStructureh">tags/Safari-538.32/Source/JavaScriptCore/runtime/Structure.h</a></li>
<li><a href="#tagsSafari53832SourceJavaScriptCoreruntimeStructureInlinesh">tags/Safari-538.32/Source/JavaScriptCore/runtime/StructureInlines.h</a></li>
</ul>

<h3>Removed Paths</h3>
<ul>
<li><a href="#tagsSafari53832LayoutTestsjsregressdeleteafewpropertiesthengetbyidexpectedtxt">tags/Safari-538.32/LayoutTests/js/regress/delete-a-few-properties-then-get-by-id-expected.txt</a></li>
<li><a href="#tagsSafari53832LayoutTestsjsregressdeleteafewpropertiesthengetbyidhtml">tags/Safari-538.32/LayoutTests/js/regress/delete-a-few-properties-then-get-by-id.html</a></li>
<li><a href="#tagsSafari53832LayoutTestsjsregressscripttestsdeleteafewpropertiesthengetbyidjs">tags/Safari-538.32/LayoutTests/js/regress/script-tests/delete-a-few-properties-then-get-by-id.js</a></li>
<li><a href="#tagsSafari53832SourceJavaScriptCoretestsstressforinafterdeletejs">tags/Safari-538.32/Source/JavaScriptCore/tests/stress/for-in-after-delete.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="tagsSafari53832LayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: tags/Safari-538.32/LayoutTests/ChangeLog (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/LayoutTests/ChangeLog        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/LayoutTests/ChangeLog        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -1,5 +1,9 @@
</span><span class="cx"> 2014-04-29  Lucas Forschler  &lt;lforschler@apple.com&gt;
</span><span class="cx"> 
</span><ins>+    Rollout r167889
+
+2014-04-29  Lucas Forschler  &lt;lforschler@apple.com&gt;
+
</ins><span class="cx">         Merge r167942
</span><span class="cx"> 
</span><span class="cx">     2014-04-29  Manuel Rego Casasnovas  &lt;rego@igalia.com&gt;
</span></span></pre></div>
<a id="tagsSafari53832LayoutTestsjsregressdeleteafewpropertiesthengetbyidexpectedtxt"></a>
<div class="delfile"><h4>Deleted: tags/Safari-538.32/LayoutTests/js/regress/delete-a-few-properties-then-get-by-id-expected.txt (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/LayoutTests/js/regress/delete-a-few-properties-then-get-by-id-expected.txt        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/LayoutTests/js/regress/delete-a-few-properties-then-get-by-id-expected.txt        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -1,10 +0,0 @@
</span><del>-JSRegress/delete-a-few-properties-then-get-by-id
-
-On success, you will see a series of &quot;PASS&quot; messages, followed by &quot;TEST COMPLETE&quot;.
-
-
-PASS no exception thrown
-PASS successfullyParsed is true
-
-TEST COMPLETE
-
</del></span></pre></div>
<a id="tagsSafari53832LayoutTestsjsregressdeleteafewpropertiesthengetbyidhtml"></a>
<div class="delfile"><h4>Deleted: tags/Safari-538.32/LayoutTests/js/regress/delete-a-few-properties-then-get-by-id.html (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/LayoutTests/js/regress/delete-a-few-properties-then-get-by-id.html        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/LayoutTests/js/regress/delete-a-few-properties-then-get-by-id.html        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -1,12 +0,0 @@
</span><del>-&lt;!DOCTYPE HTML PUBLIC &quot;-//IETF//DTD HTML//EN&quot;&gt;
-&lt;html&gt;
-&lt;head&gt;
-&lt;script src=&quot;../../resources/js-test-pre.js&quot;&gt;&lt;/script&gt;
-&lt;/head&gt;
-&lt;body&gt;
-&lt;script src=&quot;../../resources/regress-pre.js&quot;&gt;&lt;/script&gt;
-&lt;script src=&quot;script-tests/delete-a-few-properties-then-get-by-id.js&quot;&gt;&lt;/script&gt;
-&lt;script src=&quot;../../resources/regress-post.js&quot;&gt;&lt;/script&gt;
-&lt;script src=&quot;../../resources/js-test-post.js&quot;&gt;&lt;/script&gt;
-&lt;/body&gt;
-&lt;/html&gt;
</del></span></pre></div>
<a id="tagsSafari53832LayoutTestsjsregressscripttestsdeleteafewpropertiesthengetbyidjs"></a>
<div class="delfile"><h4>Deleted: tags/Safari-538.32/LayoutTests/js/regress/script-tests/delete-a-few-properties-then-get-by-id.js (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/LayoutTests/js/regress/script-tests/delete-a-few-properties-then-get-by-id.js        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/LayoutTests/js/regress/script-tests/delete-a-few-properties-then-get-by-id.js        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -1,21 +0,0 @@
</span><del>-function MyObject(x, y) {
-    this.x = x;
-    this.y = y;
-    this.deleteMe = &quot;delete me&quot;;
-}
-
-function foo(o) {
-    return o.x + o.y;
-}
-
-var niters = 100000;
-var sum = 0;
-var o = new MyObject(13, 42);
-delete o.deleteMe;
-
-for (var i = 0; i &lt; niters; ++i) {
-    sum += foo(o);
-}
-
-if (sum != 55 * niters)
-    throw new Error(&quot;Bad result!&quot;);
</del></span></pre></div>
<a id="tagsSafari53832SourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: tags/Safari-538.32/Source/JavaScriptCore/ChangeLog (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/Source/JavaScriptCore/ChangeLog        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/Source/JavaScriptCore/ChangeLog        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -1,3 +1,7 @@
</span><ins>+2014-04-29  Lucas Forschler  &lt;lforschler@apple.com&gt;
+
+    Rollout r167889
+
</ins><span class="cx"> 2014-04-28  Filip Pizlo  &lt;fpizlo@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         The LLInt is awesome and it should get more of the action.
</span></span></pre></div>
<a id="tagsSafari53832SourceJavaScriptCoreruntimeJSPropertyNameIteratorcpp"></a>
<div class="modfile"><h4>Modified: tags/Safari-538.32/Source/JavaScriptCore/runtime/JSPropertyNameIterator.cpp (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/Source/JavaScriptCore/runtime/JSPropertyNameIterator.cpp        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/Source/JavaScriptCore/runtime/JSPropertyNameIterator.cpp        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -57,14 +57,13 @@
</span><span class="cx">     o-&gt;methodTable()-&gt;getPropertyNames(o, exec, propertyNames, ExcludeDontEnumProperties);
</span><span class="cx">     size_t numCacheableSlots = 0;
</span><span class="cx">     if (!o-&gt;structure()-&gt;hasNonEnumerableProperties() &amp;&amp; !o-&gt;structure()-&gt;hasGetterSetterProperties()
</span><del>-        &amp;&amp; !o-&gt;structure()-&gt;isUncacheableDictionary() &amp;&amp; !o-&gt;structure()-&gt;hadDeletedOffsets() &amp;&amp; !o-&gt;structure()-&gt;typeInfo().overridesGetPropertyNames())
</del><ins>+        &amp;&amp; !o-&gt;structure()-&gt;isUncacheableDictionary() &amp;&amp; !o-&gt;structure()-&gt;typeInfo().overridesGetPropertyNames())
</ins><span class="cx">         numCacheableSlots = propertyNames.numCacheableSlots();
</span><span class="cx">     
</span><span class="cx">     JSPropertyNameIterator* jsPropertyNameIterator = new (NotNull, allocateCell&lt;JSPropertyNameIterator&gt;(vm.heap)) JSPropertyNameIterator(exec, propertyNames.data(), numCacheableSlots);
</span><span class="cx">     jsPropertyNameIterator-&gt;finishCreation(vm, propertyNames.data(), o);
</span><span class="cx"> 
</span><del>-    // JSPropertyNameIterator doesn't know how to skip deleted buckets, so just give up.
-    if (o-&gt;structure()-&gt;isDictionary() || o-&gt;structure()-&gt;hadDeletedOffsets())
</del><ins>+    if (o-&gt;structure()-&gt;isDictionary())
</ins><span class="cx">         return jsPropertyNameIterator;
</span><span class="cx"> 
</span><span class="cx">     if (o-&gt;structure()-&gt;typeInfo().overridesGetPropertyNames())
</span></span></pre></div>
<a id="tagsSafari53832SourceJavaScriptCoreruntimePropertyMapHashTableh"></a>
<div class="modfile"><h4>Modified: tags/Safari-538.32/Source/JavaScriptCore/runtime/PropertyMapHashTable.h (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/Source/JavaScriptCore/runtime/PropertyMapHashTable.h        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/Source/JavaScriptCore/runtime/PropertyMapHashTable.h        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -189,8 +189,7 @@
</span><span class="cx"> 
</span><span class="cx">     // Used to maintain a list of unused entries in the property storage.
</span><span class="cx">     void clearDeletedOffsets();
</span><del>-    bool hasDeletedOffset() const;
-    bool hadDeletedOffset() const; // Returns true if we ever had deleted properties.
</del><ins>+    bool hasDeletedOffset();
</ins><span class="cx">     PropertyOffset getDeletedOffset();
</span><span class="cx">     void addDeletedOffset(PropertyOffset);
</span><span class="cx">     
</span><span class="lines">@@ -468,16 +467,11 @@
</span><span class="cx">     m_deletedOffsets.clear();
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-inline bool PropertyTable::hasDeletedOffset() const
</del><ins>+inline bool PropertyTable::hasDeletedOffset()
</ins><span class="cx"> {
</span><span class="cx">     return m_deletedOffsets &amp;&amp; !m_deletedOffsets-&gt;isEmpty();
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-inline bool PropertyTable::hadDeletedOffset() const
-{
-    return m_deletedOffsets;
-}
-
</del><span class="cx"> inline PropertyOffset PropertyTable::getDeletedOffset()
</span><span class="cx"> {
</span><span class="cx">     PropertyOffset offset = m_deletedOffsets-&gt;last();
</span></span></pre></div>
<a id="tagsSafari53832SourceJavaScriptCoreruntimeStructurecpp"></a>
<div class="modfile"><h4>Modified: tags/Safari-538.32/Source/JavaScriptCore/runtime/Structure.cpp (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/Source/JavaScriptCore/runtime/Structure.cpp        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/Source/JavaScriptCore/runtime/Structure.cpp        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -165,7 +165,6 @@
</span><span class="cx">     , m_transitionWatchpointSet(IsWatched)
</span><span class="cx">     , m_offset(invalidOffset)
</span><span class="cx">     , m_inlineCapacity(inlineCapacity)
</span><del>-    , m_forgivenDeletes(0)
</del><span class="cx">     , m_dictionaryKind(NoneDictionaryKind)
</span><span class="cx">     , m_isPinnedPropertyTable(false)
</span><span class="cx">     , m_hasGetterSetterProperties(classInfo-&gt;hasStaticSetterOrReadonlyProperties(vm))
</span><span class="lines">@@ -193,7 +192,6 @@
</span><span class="cx">     , m_transitionWatchpointSet(IsWatched)
</span><span class="cx">     , m_offset(invalidOffset)
</span><span class="cx">     , m_inlineCapacity(0)
</span><del>-    , m_forgivenDeletes(0)
</del><span class="cx">     , m_dictionaryKind(NoneDictionaryKind)
</span><span class="cx">     , m_isPinnedPropertyTable(false)
</span><span class="cx">     , m_hasGetterSetterProperties(m_classInfo-&gt;hasStaticSetterOrReadonlyProperties(vm))
</span><span class="lines">@@ -220,7 +218,6 @@
</span><span class="cx">     , m_transitionWatchpointSet(IsWatched)
</span><span class="cx">     , m_offset(invalidOffset)
</span><span class="cx">     , m_inlineCapacity(previous-&gt;m_inlineCapacity)
</span><del>-    , m_forgivenDeletes(previous-&gt;m_forgivenDeletes)
</del><span class="cx">     , m_dictionaryKind(previous-&gt;m_dictionaryKind)
</span><span class="cx">     , m_isPinnedPropertyTable(false)
</span><span class="cx">     , m_hasGetterSetterProperties(previous-&gt;m_hasGetterSetterProperties)
</span><span class="lines">@@ -313,12 +310,7 @@
</span><span class="cx">         structure = structures[i];
</span><span class="cx">         if (!structure-&gt;m_nameInPrevious)
</span><span class="cx">             continue;
</span><del>-
-        PropertyMapEntry entry(vm, this, 
-            structure-&gt;m_nameInPrevious.get(), 
-            propertyTable()-&gt;nextOffset(m_inlineCapacity),
-            structure-&gt;m_attributesInPrevious, 
-            structure-&gt;m_specificValueInPrevious.get());
</del><ins>+        PropertyMapEntry entry(vm, this, structure-&gt;m_nameInPrevious.get(), structure-&gt;m_offset, structure-&gt;m_attributesInPrevious, structure-&gt;m_specificValueInPrevious.get());
</ins><span class="cx">         propertyTable()-&gt;add(entry, m_offset, PropertyTable::PropertyOffsetMustNotChange);
</span><span class="cx">     }
</span><span class="cx">     
</span><span class="lines">@@ -466,26 +458,10 @@
</span><span class="cx"> {
</span><span class="cx">     ASSERT(!structure-&gt;isUncacheableDictionary());
</span><span class="cx"> 
</span><del>-    if (structure-&gt;m_forgivenDeletes &lt; s_maxForgivenDeletes) {
-        Structure* transition = create(vm, structure);
-        ASSERT(!transition-&gt;enumerationCache());
-
-        DeferGC deferGC(vm.heap);
-        structure-&gt;materializePropertyMapIfNecessary(vm, deferGC);
-        transition-&gt;propertyTable().set(vm, transition, structure-&gt;copyPropertyTableForPinning(vm, transition));
-        transition-&gt;m_offset = structure-&gt;m_offset;
-        transition-&gt;pinAndPreventTransitions();
-
-        offset = transition-&gt;remove(propertyName);
-        ASSERT(offset != invalidOffset);
-        transition-&gt;m_forgivenDeletes = structure-&gt;m_forgivenDeletes + 1;
-
-        transition-&gt;checkOffsetConsistency();
-        return transition;
-    }
-
</del><span class="cx">     Structure* transition = toUncacheableDictionaryTransition(vm, structure);
</span><ins>+
</ins><span class="cx">     offset = transition-&gt;remove(propertyName);
</span><ins>+
</ins><span class="cx">     transition-&gt;checkOffsetConsistency();
</span><span class="cx">     return transition;
</span><span class="cx"> }
</span><span class="lines">@@ -500,7 +476,7 @@
</span><span class="cx">     structure-&gt;materializePropertyMapIfNecessary(vm, deferGC);
</span><span class="cx">     transition-&gt;propertyTable().set(vm, transition, structure-&gt;copyPropertyTableForPinning(vm, transition));
</span><span class="cx">     transition-&gt;m_offset = structure-&gt;m_offset;
</span><del>-    transition-&gt;pinAndPreventTransitions();
</del><ins>+    transition-&gt;pin();
</ins><span class="cx"> 
</span><span class="cx">     transition-&gt;checkOffsetConsistency();
</span><span class="cx">     return transition;
</span><span class="lines">@@ -517,7 +493,7 @@
</span><span class="cx">     structure-&gt;materializePropertyMapIfNecessary(vm, deferGC);
</span><span class="cx">     transition-&gt;propertyTable().set(vm, transition, structure-&gt;copyPropertyTableForPinning(vm, transition));
</span><span class="cx">     transition-&gt;m_offset = structure-&gt;m_offset;
</span><del>-    transition-&gt;pinAndPreventTransitions();
</del><ins>+    transition-&gt;pin();
</ins><span class="cx"> 
</span><span class="cx">     if (transition-&gt;m_specificFunctionThrashCount == maxSpecificFunctionThrashCount)
</span><span class="cx">         transition-&gt;despecifyAllFunctions(vm);
</span><span class="lines">@@ -539,7 +515,7 @@
</span><span class="cx">         structure-&gt;materializePropertyMapIfNecessary(vm, deferGC);
</span><span class="cx">         transition-&gt;propertyTable().set(vm, transition, structure-&gt;copyPropertyTableForPinning(vm, transition));
</span><span class="cx">         transition-&gt;m_offset = structure-&gt;m_offset;
</span><del>-        transition-&gt;pinAndPreventTransitions();
</del><ins>+        transition-&gt;pin();
</ins><span class="cx">         
</span><span class="cx">         structure = transition;
</span><span class="cx">     }
</span><span class="lines">@@ -564,7 +540,7 @@
</span><span class="cx">     transition-&gt;propertyTable().set(vm, transition, structure-&gt;copyPropertyTableForPinning(vm, transition));
</span><span class="cx">     transition-&gt;m_offset = structure-&gt;m_offset;
</span><span class="cx">     transition-&gt;m_dictionaryKind = kind;
</span><del>-    transition-&gt;pinAndPreventTransitions();
</del><ins>+    transition-&gt;pin();
</ins><span class="cx"> 
</span><span class="cx">     transition-&gt;checkOffsetConsistency();
</span><span class="cx">     return transition;
</span><span class="lines">@@ -627,7 +603,7 @@
</span><span class="cx">     transition-&gt;propertyTable().set(vm, transition, structure-&gt;copyPropertyTableForPinning(vm, transition));
</span><span class="cx">     transition-&gt;m_offset = structure-&gt;m_offset;
</span><span class="cx">     transition-&gt;m_preventExtensions = true;
</span><del>-    transition-&gt;pinAndPreventTransitions();
</del><ins>+    transition-&gt;pin();
</ins><span class="cx"> 
</span><span class="cx">     transition-&gt;checkOffsetConsistency();
</span><span class="cx">     return transition;
</span><span class="lines">@@ -776,7 +752,7 @@
</span><span class="cx">     DeferGC deferGC(vm.heap);
</span><span class="cx">     materializePropertyMapIfNecessaryForPinning(vm, deferGC);
</span><span class="cx">     
</span><del>-    pinAndPreventTransitions();
</del><ins>+    pin();
</ins><span class="cx"> 
</span><span class="cx">     return putSpecificValue(vm, propertyName, attributes, specificValue);
</span><span class="cx"> }
</span><span class="lines">@@ -789,7 +765,7 @@
</span><span class="cx">     DeferGC deferGC(vm.heap);
</span><span class="cx">     materializePropertyMapIfNecessaryForPinning(vm, deferGC);
</span><span class="cx"> 
</span><del>-    pinAndPreventTransitions();
</del><ins>+    pin();
</ins><span class="cx">     return remove(propertyName);
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -797,11 +773,6 @@
</span><span class="cx"> {
</span><span class="cx">     ASSERT(propertyTable());
</span><span class="cx">     m_isPinnedPropertyTable = true;
</span><del>-}
-
-void Structure::pinAndPreventTransitions()
-{
-    pin();
</del><span class="cx">     clearPreviousID();
</span><span class="cx">     m_nameInPrevious.clear();
</span><span class="cx"> }
</span></span></pre></div>
<a id="tagsSafari53832SourceJavaScriptCoreruntimeStructureh"></a>
<div class="modfile"><h4>Modified: tags/Safari-538.32/Source/JavaScriptCore/runtime/Structure.h (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/Source/JavaScriptCore/runtime/Structure.h        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/Source/JavaScriptCore/runtime/Structure.h        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -137,8 +137,6 @@
</span><span class="cx">     PropertyOffset removePropertyWithoutTransition(VM&amp;, PropertyName);
</span><span class="cx">     void setPrototypeWithoutTransition(VM&amp; vm, JSValue prototype) { m_prototype.set(vm, this, prototype); }
</span><span class="cx">         
</span><del>-    bool hadDeletedOffsets() const;
-
</del><span class="cx">     bool isDictionary() const { return m_dictionaryKind != NoneDictionaryKind; }
</span><span class="cx">     bool isUncacheableDictionary() const { return m_dictionaryKind == UncachedDictionaryKind; }
</span><span class="cx"> 
</span><span class="lines">@@ -413,7 +411,6 @@
</span><span class="cx">     void despecifyAllFunctions(VM&amp;);
</span><span class="cx"> 
</span><span class="cx">     WriteBarrier&lt;PropertyTable&gt;&amp; propertyTable();
</span><del>-    const WriteBarrier&lt;PropertyTable&gt;&amp; propertyTable() const;
</del><span class="cx">     PropertyTable* takePropertyTableOrCloneIfPinned(VM&amp;, Structure* owner);
</span><span class="cx">     PropertyTable* copyPropertyTable(VM&amp;, Structure* owner);
</span><span class="cx">     PropertyTable* copyPropertyTableForPinning(VM&amp;, Structure* owner);
</span><span class="lines">@@ -460,7 +457,6 @@
</span><span class="cx">     bool isValid(ExecState*, StructureChain* cachedPrototypeChain) const;
</span><span class="cx">         
</span><span class="cx">     void pin();
</span><del>-    void pinAndPreventTransitions();
</del><span class="cx"> 
</span><span class="cx">     Structure* previous() const
</span><span class="cx">     {
</span><span class="lines">@@ -516,9 +512,6 @@
</span><span class="cx">     
</span><span class="cx">     ConcurrentJITLock m_lock;
</span><span class="cx">     
</span><del>-    static const unsigned s_maxForgivenDeletes = 5;
-    unsigned m_forgivenDeletes;
-
</del><span class="cx">     unsigned m_dictionaryKind : 2;
</span><span class="cx">     bool m_isPinnedPropertyTable : 1;
</span><span class="cx">     bool m_hasGetterSetterProperties : 1;
</span></span></pre></div>
<a id="tagsSafari53832SourceJavaScriptCoreruntimeStructureInlinesh"></a>
<div class="modfile"><h4>Modified: tags/Safari-538.32/Source/JavaScriptCore/runtime/StructureInlines.h (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/Source/JavaScriptCore/runtime/StructureInlines.h        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/Source/JavaScriptCore/runtime/StructureInlines.h        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -135,7 +135,6 @@
</span><span class="cx"> inline void Structure::setEnumerationCache(VM&amp; vm, JSPropertyNameIterator* enumerationCache)
</span><span class="cx"> {
</span><span class="cx">     ASSERT(!isDictionary());
</span><del>-    ASSERT(!hadDeletedOffsets());
</del><span class="cx">     if (!typeInfo().structureHasRareData())
</span><span class="cx">         allocateRareData(vm);
</span><span class="cx">     rareData()-&gt;setEnumerationCache(vm, this, enumerationCache);
</span><span class="lines">@@ -218,21 +217,8 @@
</span><span class="cx">     return propertyTable()-&gt;size() == totalStorageCapacity();
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-inline bool Structure::hadDeletedOffsets() const
</del><ins>+ALWAYS_INLINE WriteBarrier&lt;PropertyTable&gt;&amp; Structure::propertyTable()
</ins><span class="cx"> {
</span><del>-    // If we had deleted anything then we would have pinned our property table.
-    if (!propertyTable())
-        return false;
-    return propertyTable()-&gt;hadDeletedOffset();
-}
-
-inline WriteBarrier&lt;PropertyTable&gt;&amp; Structure::propertyTable()
-{
-    return const_cast&lt;WriteBarrier&lt;PropertyTable&gt;&amp;&gt;(static_cast&lt;const Structure*&gt;(this)-&gt;propertyTable());
-}
-
-inline const WriteBarrier&lt;PropertyTable&gt;&amp; Structure::propertyTable() const
-{
</del><span class="cx">     ASSERT(!globalObject() || !globalObject()-&gt;vm().heap.isCollecting());
</span><span class="cx">     return m_propertyTableUnsafe;
</span><span class="cx"> }
</span><span class="lines">@@ -253,8 +239,8 @@
</span><span class="cx">     if (isCompilationThread())
</span><span class="cx">         return true;
</span><span class="cx">     
</span><ins>+    RELEASE_ASSERT(numberOfSlotsForLastOffset(m_offset, m_inlineCapacity) == propertyTable-&gt;propertyStorageSize());
</ins><span class="cx">     unsigned totalSize = propertyTable-&gt;propertyStorageSize();
</span><del>-    RELEASE_ASSERT(numberOfSlotsForLastOffset(m_offset, m_inlineCapacity) == totalSize);
</del><span class="cx">     RELEASE_ASSERT((totalSize &lt; inlineCapacity() ? 0 : totalSize - inlineCapacity()) == numberOfOutOfLineSlotsForLastOffset(m_offset));
</span><span class="cx"> 
</span><span class="cx">     return true;
</span></span></pre></div>
<a id="tagsSafari53832SourceJavaScriptCoretestsstressforinafterdeletejs"></a>
<div class="delfile"><h4>Deleted: tags/Safari-538.32/Source/JavaScriptCore/tests/stress/for-in-after-delete.js (167965 => 167966)</h4>
<pre class="diff"><span>
<span class="info">--- tags/Safari-538.32/Source/JavaScriptCore/tests/stress/for-in-after-delete.js        2014-04-29 22:59:26 UTC (rev 167965)
+++ tags/Safari-538.32/Source/JavaScriptCore/tests/stress/for-in-after-delete.js        2014-04-29 23:20:38 UTC (rev 167966)
</span><span class="lines">@@ -1,21 +0,0 @@
</span><del>-var foo = function() {
-    var o = {};
-    o.x = &quot;foo&quot;;
-    o.y = 1;
-    
-    delete o.x;
-    
-    o.z = 2;
-    
-    var result = null;
-    var i = 0;
-    for (var p in o) {
-        if (result === null)
-            result = o[p];
-    }
-    
-    if (result !== 1)
-        throw new Error(&quot;Incorrect result: &quot; + result + &quot; (expected 1)&quot;);
-};
-
-foo();
</del></span></pre>
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