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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/176005">176005</a></dd>
<dt>Author</dt> <dd>msaboff@apple.com</dd>
<dt>Date</dt> <dd>2014-11-11 22:00:42 -0800 (Tue, 11 Nov 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Change DFG to use scope operand for op_resolve_scope
https://bugs.webkit.org/show_bug.cgi?id=138651
Reviewed by Geoffrey Garen.
Changed to use the provided scope VirtualRegister.
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::getScope): Changed to use an argument scope register.
(JSC::DFG::ByteCodeParser::parseBlock): Created VirtualRegister from scope operand.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGByteCodeParsercpp">trunk/Source/JavaScriptCore/dfg/DFGByteCodeParser.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 (176004 => 176005)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2014-11-12 05:23:03 UTC (rev 176004)
+++ trunk/Source/JavaScriptCore/ChangeLog 2014-11-12 06:00:42 UTC (rev 176005)
</span><span class="lines">@@ -1,3 +1,16 @@
</span><ins>+2014-11-11 Michael Saboff <msaboff@apple.com>
+
+ Change DFG to use scope operand for op_resolve_scope
+ https://bugs.webkit.org/show_bug.cgi?id=138651
+
+ Reviewed by Geoffrey Garen.
+
+ Changed to use the provided scope VirtualRegister.
+
+ * dfg/DFGByteCodeParser.cpp:
+ (JSC::DFG::ByteCodeParser::getScope): Changed to use an argument scope register.
+ (JSC::DFG::ByteCodeParser::parseBlock): Created VirtualRegister from scope operand.
+
</ins><span class="cx"> 2014-11-11 Gyuyoung Kim <gyuyoung.kim@samsung.com>
</span><span class="cx">
</span><span class="cx"> Remove IncrementalSweeper::create()
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGByteCodeParsercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGByteCodeParser.cpp (176004 => 176005)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGByteCodeParser.cpp 2014-11-12 05:23:03 UTC (rev 176004)
+++ trunk/Source/JavaScriptCore/dfg/DFGByteCodeParser.cpp 2014-11-12 06:00:42 UTC (rev 176005)
</span><span class="lines">@@ -206,7 +206,7 @@
</span><span class="cx"> bool isDirect);
</span><span class="cx"> void emitChecks(const ConstantStructureCheckVector&);
</span><span class="cx">
</span><del>- Node* getScope(unsigned skipCount);
</del><ins>+ Node* getScope(VirtualRegister scopeChain, unsigned skipCount);
</ins><span class="cx">
</span><span class="cx"> void prepareToParseBlock();
</span><span class="cx"> void clearCaches();
</span><span class="lines">@@ -2301,9 +2301,9 @@
</span><span class="cx"> m_constants.resize(0);
</span><span class="cx"> }
</span><span class="cx">
</span><del>-Node* ByteCodeParser::getScope(unsigned skipCount)
</del><ins>+Node* ByteCodeParser::getScope(VirtualRegister scopeChain, unsigned skipCount)
</ins><span class="cx"> {
</span><del>- Node* localBase = get(VirtualRegister(JSStack::ScopeChain));
</del><ins>+ Node* localBase = get(scopeChain);
</ins><span class="cx"> for (unsigned n = skipCount; n--;)
</span><span class="cx"> localBase = addToGraph(SkipScope, localBase);
</span><span class="cx"> return localBase;
</span><span class="lines">@@ -3198,7 +3198,7 @@
</span><span class="cx"> set(VirtualRegister(dst), weakJSConstant(lexicalEnvironment));
</span><span class="cx"> break;
</span><span class="cx"> }
</span><del>- set(VirtualRegister(dst), getScope(depth));
</del><ins>+ set(VirtualRegister(dst), getScope(VirtualRegister(currentInstruction[2].u.operand), depth));
</ins><span class="cx"> break;
</span><span class="cx"> }
</span><span class="cx"> case Dynamic:
</span></span></pre>
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