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<title>[180237] trunk/Source/JavaScriptCore</title>
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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/180237">180237</a></dd>
<dt>Author</dt> <dd>fpizlo@apple.com</dd>
<dt>Date</dt> <dd>2015-02-17 13:41:25 -0800 (Tue, 17 Feb 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>StackLayoutPhase should use CodeBlock::usesArguments rather than FunctionExecutable::usesArguments
https://bugs.webkit.org/show_bug.cgi?id=141721
rdar://problem/17198633
Reviewed by Michael Saboff.
I've seen cases where the two are out of sync. We know we can trust the CodeBlock::usesArguments because
we use it everywhere else.
No test because I could never reproduce the crash.
* dfg/DFGGraph.h:
(JSC::DFG::Graph::usesArguments):
* dfg/DFGStackLayoutPhase.cpp:
(JSC::DFG::StackLayoutPhase::run):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGGraphh">trunk/Source/JavaScriptCore/dfg/DFGGraph.h</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGStackLayoutPhasecpp">trunk/Source/JavaScriptCore/dfg/DFGStackLayoutPhase.cpp</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (180236 => 180237)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2015-02-17 20:17:28 UTC (rev 180236)
+++ trunk/Source/JavaScriptCore/ChangeLog 2015-02-17 21:41:25 UTC (rev 180237)
</span><span class="lines">@@ -1,3 +1,21 @@
</span><ins>+2015-02-17 Filip Pizlo <fpizlo@apple.com>
+
+ StackLayoutPhase should use CodeBlock::usesArguments rather than FunctionExecutable::usesArguments
+ https://bugs.webkit.org/show_bug.cgi?id=141721
+ rdar://problem/17198633
+
+ Reviewed by Michael Saboff.
+
+ I've seen cases where the two are out of sync. We know we can trust the CodeBlock::usesArguments because
+ we use it everywhere else.
+
+ No test because I could never reproduce the crash.
+
+ * dfg/DFGGraph.h:
+ (JSC::DFG::Graph::usesArguments):
+ * dfg/DFGStackLayoutPhase.cpp:
+ (JSC::DFG::StackLayoutPhase::run):
+
</ins><span class="cx"> 2015-02-16 Joseph Pecoraro <pecoraro@apple.com>
</span><span class="cx">
</span><span class="cx"> Web Inspector: Improved Console Support for Bound Functions
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGGraphh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGGraph.h (180236 => 180237)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGGraph.h 2015-02-17 20:17:28 UTC (rev 180236)
+++ trunk/Source/JavaScriptCore/dfg/DFGGraph.h 2015-02-17 21:41:25 UTC (rev 180237)
</span><span class="lines">@@ -406,6 +406,14 @@
</span><span class="cx"> return hasExitSite(node->origin.semantic, exitKind);
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+ bool usesArguments(InlineCallFrame* inlineCallFrame)
+ {
+ if (!inlineCallFrame)
+ return m_profiledBlock->usesArguments();
+
+ return baselineCodeBlockForInlineCallFrame(inlineCallFrame)->usesArguments();
+ }
+
</ins><span class="cx"> VirtualRegister argumentsRegisterFor(InlineCallFrame* inlineCallFrame)
</span><span class="cx"> {
</span><span class="cx"> if (!inlineCallFrame)
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGStackLayoutPhasecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGStackLayoutPhase.cpp (180236 => 180237)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGStackLayoutPhase.cpp 2015-02-17 20:17:28 UTC (rev 180236)
+++ trunk/Source/JavaScriptCore/dfg/DFGStackLayoutPhase.cpp 2015-02-17 21:41:25 UTC (rev 180237)
</span><span class="lines">@@ -106,7 +106,7 @@
</span><span class="cx"> usedLocals.set(codeBlock()->activationRegister().toLocal());
</span><span class="cx"> for (InlineCallFrameSet::iterator iter = m_graph.m_plan.inlineCallFrames->begin(); !!iter; ++iter) {
</span><span class="cx"> InlineCallFrame* inlineCallFrame = *iter;
</span><del>- if (!inlineCallFrame->executable->usesArguments())
</del><ins>+ if (!m_graph.usesArguments(inlineCallFrame))
</ins><span class="cx"> continue;
</span><span class="cx">
</span><span class="cx"> VirtualRegister argumentsRegister = m_graph.argumentsRegisterFor(inlineCallFrame);
</span><span class="lines">@@ -175,7 +175,7 @@
</span><span class="cx"> InlineVariableData data = m_graph.m_inlineVariableData[i];
</span><span class="cx"> InlineCallFrame* inlineCallFrame = data.inlineCallFrame;
</span><span class="cx">
</span><del>- if (inlineCallFrame->executable->usesArguments()) {
</del><ins>+ if (m_graph.usesArguments(inlineCallFrame)) {
</ins><span class="cx"> inlineCallFrame->argumentsRegister = virtualRegisterForLocal(
</span><span class="cx"> allocation[m_graph.argumentsRegisterFor(inlineCallFrame).toLocal()]);
</span><span class="cx">
</span></span></pre>
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