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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/175240">175240</a></dd>
<dt>Author</dt> <dd>mark.lam@apple.com</dd>
<dt>Date</dt> <dd>2014-10-27 22:05:01 -0700 (Mon, 27 Oct 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Simplified some JSObject methods for converting arrays to ArrayStorage shape.
<https://webkit.org/b/138119>
Reviewed by Filip Pizlo.
Currently, for each Undecided, Int32, Double, and Contiguous array shapes,
there are 3 JSObject methods to convert them to ArrayStorage shape:
ArrayStorage* convert<shape>ToArrayStorage(VM&, NonPropertyTransition, unsigned neededLength);
ArrayStorage* convert<shape>ToArrayStorage(VM&, NonPropertyTransition);
ArrayStorage* convert<shape>ToArrayStorage(VM&);
However, the neededLength that is passed is always m_butterfly->vectorLength().
Hence, the method that takes a neededLength is really not needed. This patch
removes this unneeded verbosity.
* runtime/JSObject.cpp:
(JSC::JSObject::convertUndecidedToArrayStorage):
(JSC::JSObject::convertInt32ToArrayStorage):
- Also reordered the placement of the DeferGC statement so this Int32 function
will look more similar to the others.
(JSC::JSObject::convertDoubleToArrayStorage):
(JSC::JSObject::convertContiguousToArrayStorage):
* runtime/JSObject.h:</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCoreruntimeJSObjectcpp">trunk/Source/JavaScriptCore/runtime/JSObject.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreruntimeJSObjecth">trunk/Source/JavaScriptCore/runtime/JSObject.h</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (175239 => 175240)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2014-10-28 03:46:44 UTC (rev 175239)
+++ trunk/Source/JavaScriptCore/ChangeLog 2014-10-28 05:05:01 UTC (rev 175240)
</span><span class="lines">@@ -1,3 +1,29 @@
</span><ins>+2014-10-27 Mark Lam <mark.lam@apple.com>
+
+ Simplified some JSObject methods for converting arrays to ArrayStorage shape.
+ <https://webkit.org/b/138119>
+
+ Reviewed by Filip Pizlo.
+
+ Currently, for each Undecided, Int32, Double, and Contiguous array shapes,
+ there are 3 JSObject methods to convert them to ArrayStorage shape:
+ ArrayStorage* convert<shape>ToArrayStorage(VM&, NonPropertyTransition, unsigned neededLength);
+ ArrayStorage* convert<shape>ToArrayStorage(VM&, NonPropertyTransition);
+ ArrayStorage* convert<shape>ToArrayStorage(VM&);
+
+ However, the neededLength that is passed is always m_butterfly->vectorLength().
+ Hence, the method that takes a neededLength is really not needed. This patch
+ removes this unneeded verbosity.
+
+ * runtime/JSObject.cpp:
+ (JSC::JSObject::convertUndecidedToArrayStorage):
+ (JSC::JSObject::convertInt32ToArrayStorage):
+ - Also reordered the placement of the DeferGC statement so this Int32 function
+ will look more similar to the others.
+ (JSC::JSObject::convertDoubleToArrayStorage):
+ (JSC::JSObject::convertContiguousToArrayStorage):
+ * runtime/JSObject.h:
+
</ins><span class="cx"> 2014-10-25 Brian J. Burg <burg@cs.washington.edu>
</span><span class="cx">
</span><span class="cx"> Web Inspector: timelines should not count time elapsed while paused in the debugger
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreruntimeJSObjectcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/runtime/JSObject.cpp (175239 => 175240)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/runtime/JSObject.cpp 2014-10-28 03:46:44 UTC (rev 175239)
+++ trunk/Source/JavaScriptCore/runtime/JSObject.cpp 2014-10-28 05:05:01 UTC (rev 175240)
</span><span class="lines">@@ -724,12 +724,13 @@
</span><span class="cx"> return newStorage;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-ArrayStorage* JSObject::convertUndecidedToArrayStorage(VM& vm, NonPropertyTransition transition, unsigned neededLength)
</del><ins>+ArrayStorage* JSObject::convertUndecidedToArrayStorage(VM& vm, NonPropertyTransition transition)
</ins><span class="cx"> {
</span><span class="cx"> DeferGC deferGC(vm.heap);
</span><span class="cx"> ASSERT(hasUndecided(indexingType()));
</span><del>-
- ArrayStorage* storage = constructConvertedArrayStorageWithoutCopyingElements(vm, neededLength);
</del><ins>+
+ unsigned vectorLength = m_butterfly->vectorLength();
+ ArrayStorage* storage = constructConvertedArrayStorageWithoutCopyingElements(vm, vectorLength);
</ins><span class="cx"> // No need to copy elements.
</span><span class="cx">
</span><span class="cx"> Structure* newStructure = Structure::nonPropertyTransition(vm, structure(vm), transition);
</span><span class="lines">@@ -737,11 +738,6 @@
</span><span class="cx"> return storage;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-ArrayStorage* JSObject::convertUndecidedToArrayStorage(VM& vm, NonPropertyTransition transition)
-{
- return convertUndecidedToArrayStorage(vm, transition, m_butterfly->vectorLength());
-}
-
</del><span class="cx"> ArrayStorage* JSObject::convertUndecidedToArrayStorage(VM& vm)
</span><span class="cx"> {
</span><span class="cx"> return convertUndecidedToArrayStorage(vm, structure(vm)->suggestedArrayStorageTransition());
</span><span class="lines">@@ -775,12 +771,13 @@
</span><span class="cx"> return m_butterfly->contiguous();
</span><span class="cx"> }
</span><span class="cx">
</span><del>-ArrayStorage* JSObject::convertInt32ToArrayStorage(VM& vm, NonPropertyTransition transition, unsigned neededLength)
</del><ins>+ArrayStorage* JSObject::convertInt32ToArrayStorage(VM& vm, NonPropertyTransition transition)
</ins><span class="cx"> {
</span><del>- ASSERT(hasInt32(indexingType()));
-
</del><span class="cx"> DeferGC deferGC(vm.heap);
</span><del>- ArrayStorage* newStorage = constructConvertedArrayStorageWithoutCopyingElements(vm, neededLength);
</del><ins>+ ASSERT(hasInt32(indexingType()));
+
+ unsigned vectorLength = m_butterfly->vectorLength();
+ ArrayStorage* newStorage = constructConvertedArrayStorageWithoutCopyingElements(vm, vectorLength);
</ins><span class="cx"> for (unsigned i = m_butterfly->publicLength(); i--;) {
</span><span class="cx"> JSValue v = m_butterfly->contiguous()[i].get();
</span><span class="cx"> if (!v)
</span><span class="lines">@@ -794,11 +791,6 @@
</span><span class="cx"> return newStorage;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-ArrayStorage* JSObject::convertInt32ToArrayStorage(VM& vm, NonPropertyTransition transition)
-{
- return convertInt32ToArrayStorage(vm, transition, m_butterfly->vectorLength());
-}
-
</del><span class="cx"> ArrayStorage* JSObject::convertInt32ToArrayStorage(VM& vm)
</span><span class="cx"> {
</span><span class="cx"> return convertInt32ToArrayStorage(vm, structure(vm)->suggestedArrayStorageTransition());
</span><span class="lines">@@ -848,12 +840,13 @@
</span><span class="cx"> return genericConvertDoubleToContiguous<RageConvertDoubleToValue>(vm);
</span><span class="cx"> }
</span><span class="cx">
</span><del>-ArrayStorage* JSObject::convertDoubleToArrayStorage(VM& vm, NonPropertyTransition transition, unsigned neededLength)
</del><ins>+ArrayStorage* JSObject::convertDoubleToArrayStorage(VM& vm, NonPropertyTransition transition)
</ins><span class="cx"> {
</span><span class="cx"> DeferGC deferGC(vm.heap);
</span><span class="cx"> ASSERT(hasDouble(indexingType()));
</span><del>-
- ArrayStorage* newStorage = constructConvertedArrayStorageWithoutCopyingElements(vm, neededLength);
</del><ins>+
+ unsigned vectorLength = m_butterfly->vectorLength();
+ ArrayStorage* newStorage = constructConvertedArrayStorageWithoutCopyingElements(vm, vectorLength);
</ins><span class="cx"> for (unsigned i = m_butterfly->publicLength(); i--;) {
</span><span class="cx"> double value = m_butterfly->contiguousDouble()[i];
</span><span class="cx"> if (value != value)
</span><span class="lines">@@ -867,22 +860,18 @@
</span><span class="cx"> return newStorage;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-ArrayStorage* JSObject::convertDoubleToArrayStorage(VM& vm, NonPropertyTransition transition)
-{
- return convertDoubleToArrayStorage(vm, transition, m_butterfly->vectorLength());
-}
-
</del><span class="cx"> ArrayStorage* JSObject::convertDoubleToArrayStorage(VM& vm)
</span><span class="cx"> {
</span><span class="cx"> return convertDoubleToArrayStorage(vm, structure(vm)->suggestedArrayStorageTransition());
</span><span class="cx"> }
</span><span class="cx">
</span><del>-ArrayStorage* JSObject::convertContiguousToArrayStorage(VM& vm, NonPropertyTransition transition, unsigned neededLength)
</del><ins>+ArrayStorage* JSObject::convertContiguousToArrayStorage(VM& vm, NonPropertyTransition transition)
</ins><span class="cx"> {
</span><span class="cx"> DeferGC deferGC(vm.heap);
</span><span class="cx"> ASSERT(hasContiguous(indexingType()));
</span><del>-
- ArrayStorage* newStorage = constructConvertedArrayStorageWithoutCopyingElements(vm, neededLength);
</del><ins>+
+ unsigned vectorLength = m_butterfly->vectorLength();
+ ArrayStorage* newStorage = constructConvertedArrayStorageWithoutCopyingElements(vm, vectorLength);
</ins><span class="cx"> for (unsigned i = m_butterfly->publicLength(); i--;) {
</span><span class="cx"> JSValue v = m_butterfly->contiguous()[i].get();
</span><span class="cx"> if (!v)
</span><span class="lines">@@ -896,11 +885,6 @@
</span><span class="cx"> return newStorage;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-ArrayStorage* JSObject::convertContiguousToArrayStorage(VM& vm, NonPropertyTransition transition)
-{
- return convertContiguousToArrayStorage(vm, transition, m_butterfly->vectorLength());
-}
-
</del><span class="cx"> ArrayStorage* JSObject::convertContiguousToArrayStorage(VM& vm)
</span><span class="cx"> {
</span><span class="cx"> return convertContiguousToArrayStorage(vm, structure(vm)->suggestedArrayStorageTransition());
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreruntimeJSObjecth"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/runtime/JSObject.h (175239 => 175240)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/runtime/JSObject.h 2014-10-28 03:46:44 UTC (rev 175239)
+++ trunk/Source/JavaScriptCore/runtime/JSObject.h 2014-10-28 05:05:01 UTC (rev 175240)
</span><span class="lines">@@ -780,23 +780,19 @@
</span><span class="cx"> ContiguousJSValues convertUndecidedToInt32(VM&);
</span><span class="cx"> ContiguousDoubles convertUndecidedToDouble(VM&);
</span><span class="cx"> ContiguousJSValues convertUndecidedToContiguous(VM&);
</span><del>- ArrayStorage* convertUndecidedToArrayStorage(VM&, NonPropertyTransition, unsigned neededLength);
</del><span class="cx"> ArrayStorage* convertUndecidedToArrayStorage(VM&, NonPropertyTransition);
</span><span class="cx"> ArrayStorage* convertUndecidedToArrayStorage(VM&);
</span><span class="cx">
</span><span class="cx"> ContiguousDoubles convertInt32ToDouble(VM&);
</span><span class="cx"> ContiguousJSValues convertInt32ToContiguous(VM&);
</span><del>- ArrayStorage* convertInt32ToArrayStorage(VM&, NonPropertyTransition, unsigned neededLength);
</del><span class="cx"> ArrayStorage* convertInt32ToArrayStorage(VM&, NonPropertyTransition);
</span><span class="cx"> ArrayStorage* convertInt32ToArrayStorage(VM&);
</span><span class="cx">
</span><span class="cx"> ContiguousJSValues convertDoubleToContiguous(VM&);
</span><span class="cx"> ContiguousJSValues rageConvertDoubleToContiguous(VM&);
</span><del>- ArrayStorage* convertDoubleToArrayStorage(VM&, NonPropertyTransition, unsigned neededLength);
</del><span class="cx"> ArrayStorage* convertDoubleToArrayStorage(VM&, NonPropertyTransition);
</span><span class="cx"> ArrayStorage* convertDoubleToArrayStorage(VM&);
</span><span class="cx">
</span><del>- ArrayStorage* convertContiguousToArrayStorage(VM&, NonPropertyTransition, unsigned neededLength);
</del><span class="cx"> ArrayStorage* convertContiguousToArrayStorage(VM&, NonPropertyTransition);
</span><span class="cx"> ArrayStorage* convertContiguousToArrayStorage(VM&);
</span><span class="cx">
</span></span></pre>
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