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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/204495">204495</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2016-08-15 21:17:36 -0700 (Mon, 15 Aug 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>[Regression 204203-204210] 32-bit ASSERTION FAILED: !m_data[index].name.isValid()
https://bugs.webkit.org/show_bug.cgi?id=160881
Patch by Benjamin Poulain <bpoulain@apple.com> on 2016-08-15
Reviewed by Mark Lam.
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
We were trying to set the result of the Identity node to the same
value as the source of the Identity.
That is pretty messed up.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGSpeculativeJIT32_64cpp">trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (204494 => 204495)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2016-08-16 03:32:38 UTC (rev 204494)
+++ trunk/Source/JavaScriptCore/ChangeLog 2016-08-16 04:17:36 UTC (rev 204495)
</span><span class="lines">@@ -1,3 +1,16 @@
</span><ins>+2016-08-15 Benjamin Poulain <bpoulain@apple.com>
+
+ [Regression 204203-204210] 32-bit ASSERTION FAILED: !m_data[index].name.isValid()
+ https://bugs.webkit.org/show_bug.cgi?id=160881
+
+ Reviewed by Mark Lam.
+
+ * dfg/DFGSpeculativeJIT32_64.cpp:
+ (JSC::DFG::SpeculativeJIT::compile):
+ We were trying to set the result of the Identity node to the same
+ value as the source of the Identity.
+ That is pretty messed up.
+
</ins><span class="cx"> 2016-08-15 Saam Barati <sbarati@apple.com>
</span><span class="cx">
</span><span class="cx"> Web Inspector: Introduce a method to enable code coverage profiler without enabling type profiler
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGSpeculativeJIT32_64cpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp (204494 => 204495)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp 2016-08-16 03:32:38 UTC (rev 204494)
+++ trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp 2016-08-16 04:17:36 UTC (rev 204495)
</span><span class="lines">@@ -1973,7 +1973,15 @@
</span><span class="cx"> }
</span><span class="cx"> default: {
</span><span class="cx"> JSValueOperand op(this, node->child1());
</span><del>- jsValueResult(op.tagGPR(), op.payloadGPR(), node);
</del><ins>+ GPRTemporary resultTag(this, Reuse, op, TagWord);
+ GPRTemporary resultPayload(this, Reuse, op, PayloadWord);
+ GPRReg sourceTag = op.tagGPR();
+ GPRReg sourcePayload = op.payloadGPR();
+ GPRReg resultTagGPR = resultTag.gpr();
+ GPRReg resultPayloadGPR = resultPayload.gpr();
+ m_jit.move(sourceTag, resultTagGPR);
+ m_jit.move(sourcePayload, resultPayloadGPR);
+ jsValueResult(resultTagGPR, resultPayloadGPR, node);
</ins><span class="cx"> break;
</span><span class="cx"> }
</span><span class="cx"> } // switch
</span></span></pre>
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