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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/180332">180332</a></dd>
<dt>Author</dt> <dd>benjamin@webkit.org</dd>
<dt>Date</dt> <dd>2015-02-18 17:12:58 -0800 (Wed, 18 Feb 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>Remove BytecodeGenerator's numberMap, it is dead code
https://bugs.webkit.org/show_bug.cgi?id=141779
Patch by Benjamin Poulain <bpoulain@apple.com> on 2015-02-18
Reviewed by Filip Pizlo.
* bytecompiler/BytecodeGenerator.cpp:
(JSC::BytecodeGenerator::emitLoad): Deleted.
* bytecompiler/BytecodeGenerator.h:
The JSValueMap seems better in every way.
The emitLoad() taking a double was the only way to use numberMap
and that code has no caller.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecompilerBytecodeGeneratorcpp">trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecompilerBytecodeGeneratorh">trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h</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 (180331 => 180332)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2015-02-19 00:39:45 UTC (rev 180331)
+++ trunk/Source/JavaScriptCore/ChangeLog 2015-02-19 01:12:58 UTC (rev 180332)
</span><span class="lines">@@ -1,3 +1,18 @@
</span><ins>+2015-02-18 Benjamin Poulain <bpoulain@apple.com>
+
+ Remove BytecodeGenerator's numberMap, it is dead code
+ https://bugs.webkit.org/show_bug.cgi?id=141779
+
+ Reviewed by Filip Pizlo.
+
+ * bytecompiler/BytecodeGenerator.cpp:
+ (JSC::BytecodeGenerator::emitLoad): Deleted.
+ * bytecompiler/BytecodeGenerator.h:
+ The JSValueMap seems better in every way.
+
+ The emitLoad() taking a double was the only way to use numberMap
+ and that code has no caller.
+
</ins><span class="cx"> 2015-02-18 Michael Saboff <msaboff@apple.com>
</span><span class="cx">
</span><span class="cx"> Rollout r180247 & r180249 from trunk
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecompilerBytecodeGeneratorcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp (180331 => 180332)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp 2015-02-19 00:39:45 UTC (rev 180331)
+++ trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp 2015-02-19 01:12:58 UTC (rev 180332)
</span><span class="lines">@@ -1144,19 +1144,6 @@
</span><span class="cx"> return emitLoad(dst, jsBoolean(b));
</span><span class="cx"> }
</span><span class="cx">
</span><del>-RegisterID* BytecodeGenerator::emitLoad(RegisterID* dst, double number)
-{
- // FIXME: Our hash tables won't hold infinity, so we make a new JSValue each time.
- // Later we can do the extra work to handle that like the other cases. They also don't
- // work correctly with NaN as a key.
- if (std::isnan(number) || number == HashTraits<double>::emptyValue() || HashTraits<double>::isDeletedValue(number))
- return emitLoad(dst, jsNumber(number));
- JSValue& valueInMap = m_numberMap.add(number, JSValue()).iterator->value;
- if (!valueInMap)
- valueInMap = jsNumber(number);
- return emitLoad(dst, valueInMap);
-}
-
</del><span class="cx"> RegisterID* BytecodeGenerator::emitLoad(RegisterID* dst, const Identifier& identifier)
</span><span class="cx"> {
</span><span class="cx"> JSString*& stringInMap = m_stringMap.add(identifier.impl(), nullptr).iterator->value;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecompilerBytecodeGeneratorh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h (180331 => 180332)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h 2015-02-19 00:39:45 UTC (rev 180331)
+++ trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h 2015-02-19 01:12:58 UTC (rev 180332)
</span><span class="lines">@@ -442,7 +442,6 @@
</span><span class="cx"> void emitProfileControlFlow(int);
</span><span class="cx">
</span><span class="cx"> RegisterID* emitLoad(RegisterID* dst, bool);
</span><del>- RegisterID* emitLoad(RegisterID* dst, double);
</del><span class="cx"> RegisterID* emitLoad(RegisterID* dst, const Identifier&);
</span><span class="cx"> RegisterID* emitLoad(RegisterID* dst, JSValue);
</span><span class="cx"> RegisterID* emitLoadGlobalObject(RegisterID* dst);
</span><span class="lines">@@ -802,7 +801,6 @@
</span><span class="cx"> // Constant pool
</span><span class="cx"> IdentifierMap m_identifierMap;
</span><span class="cx"> JSValueMap m_jsValueMap;
</span><del>- NumberMap m_numberMap;
</del><span class="cx"> IdentifierStringMap m_stringMap;
</span><span class="cx">
</span><span class="cx"> StaticPropertyAnalyzer m_staticPropertyAnalyzer { &m_instructions };
</span></span></pre>
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