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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/213966">213966</a></dd>
<dt>Author</dt> <dd>mark.lam@apple.com</dd>
<dt>Date</dt> <dd>2017-03-14 17:53:17 -0700 (Tue, 14 Mar 2017)</dd>
</dl>
<h3>Log Message</h3>
<pre>BytecodeGenerator should use the same function to determine if it needs to store the DerivedConstructor in an ArrowFunction lexical environment.
https://bugs.webkit.org/show_bug.cgi?id=169647
<rdar://problem/31051832>
Reviewed by Michael Saboff.
* bytecompiler/BytecodeGenerator.cpp:
(JSC::BytecodeGenerator::usesDerivedConstructorInArrowFunctionLexicalEnvironment):
(JSC::BytecodeGenerator::initializeArrowFunctionContextScopeIfNeeded):
(JSC::BytecodeGenerator::emitPutDerivedConstructorToArrowFunctionContextScope):
* bytecompiler/BytecodeGenerator.h:</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 (213965 => 213966)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog        2017-03-15 00:18:24 UTC (rev 213965)
+++ trunk/Source/JavaScriptCore/ChangeLog        2017-03-15 00:53:17 UTC (rev 213966)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2017-03-14 Mark Lam <mark.lam@apple.com>
+
+ BytecodeGenerator should use the same function to determine if it needs to store the DerivedConstructor in an ArrowFunction lexical environment.
+ https://bugs.webkit.org/show_bug.cgi?id=169647
+ <rdar://problem/31051832>
+
+ Reviewed by Michael Saboff.
+
+ * bytecompiler/BytecodeGenerator.cpp:
+ (JSC::BytecodeGenerator::usesDerivedConstructorInArrowFunctionLexicalEnvironment):
+ (JSC::BytecodeGenerator::initializeArrowFunctionContextScopeIfNeeded):
+ (JSC::BytecodeGenerator::emitPutDerivedConstructorToArrowFunctionContextScope):
+ * bytecompiler/BytecodeGenerator.h:
+
</ins><span class="cx"> 2017-03-14 Brian Burg <bburg@apple.com>
</span><span class="cx">
</span><span class="cx"> [Cocoa] Web Inspector: generated code for parsing an array of primitive-type enums from payload does not work
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecompilerBytecodeGeneratorcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp (213965 => 213966)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp        2017-03-15 00:18:24 UTC (rev 213965)
+++ trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp        2017-03-15 00:53:17 UTC (rev 213966)
</span><span class="lines">@@ -1031,6 +1031,15 @@
</span><span class="cx"> }
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+bool BytecodeGenerator::needsDerivedConstructorInArrowFunctionLexicalEnvironment()
+{
+ if ((isConstructor() && constructorKind() == ConstructorKind::Extends) || m_codeBlock->isClassContext()) {
+ if (isSuperUsedInInnerArrowFunction())
+ return true;
+ }
+ return false;
+}
+
</ins><span class="cx"> void BytecodeGenerator::initializeArrowFunctionContextScopeIfNeeded(SymbolTable* functionSymbolTable, bool canReuseLexicalEnvironment)
</span><span class="cx"> {
</span><span class="cx"> ASSERT(!m_arrowFunctionContextLexicalEnvironmentRegister);
</span><span class="lines">@@ -1053,7 +1062,7 @@
</span><span class="cx"> functionSymbolTable->set(NoLockingNecessary, propertyNames().builtinNames().newTargetLocalPrivateName().impl(), SymbolTableEntry(VarOffset(offset)));
</span><span class="cx"> }
</span><span class="cx">
</span><del>- if (isConstructor() && constructorKind() == ConstructorKind::Extends && isSuperUsedInInnerArrowFunction()) {
</del><ins>+ if (needsDerivedConstructorInArrowFunctionLexicalEnvironment()) {
</ins><span class="cx"> offset = functionSymbolTable->takeNextScopeOffset(NoLockingNecessary);
</span><span class="cx"> functionSymbolTable->set(NoLockingNecessary, propertyNames().builtinNames().derivedConstructorPrivateName().impl(), SymbolTableEntry(VarOffset(offset)));
</span><span class="cx"> }
</span><span class="lines">@@ -1075,7 +1084,7 @@
</span><span class="cx"> addTarget.iterator->value.setIsLet();
</span><span class="cx"> }
</span><span class="cx">
</span><del>- if (isConstructor() && constructorKind() == ConstructorKind::Extends && isSuperUsedInInnerArrowFunction()) {
</del><ins>+ if (needsDerivedConstructorInArrowFunctionLexicalEnvironment()) {
</ins><span class="cx"> auto derivedConstructor = environment.add(propertyNames().builtinNames().derivedConstructorPrivateName());
</span><span class="cx"> derivedConstructor.iterator->value.setIsCaptured();
</span><span class="cx"> derivedConstructor.iterator->value.setIsLet();
</span><span class="lines">@@ -4570,13 +4579,11 @@
</span><span class="cx">
</span><span class="cx"> void BytecodeGenerator::emitPutDerivedConstructorToArrowFunctionContextScope()
</span><span class="cx"> {
</span><del>- if ((isConstructor() && constructorKind() == ConstructorKind::Extends) || m_codeBlock->isClassContext()) {
- if (isSuperUsedInInnerArrowFunction()) {
- ASSERT(m_arrowFunctionContextLexicalEnvironmentRegister);
-
- Variable protoScope = variable(propertyNames().builtinNames().derivedConstructorPrivateName());
- emitPutToScope(m_arrowFunctionContextLexicalEnvironmentRegister, protoScope, &m_calleeRegister, DoNotThrowIfNotFound, InitializationMode::Initialization);
- }
</del><ins>+ if (needsDerivedConstructorInArrowFunctionLexicalEnvironment()) {
+ ASSERT(m_arrowFunctionContextLexicalEnvironmentRegister);
+
+ Variable protoScope = variable(propertyNames().builtinNames().derivedConstructorPrivateName());
+ emitPutToScope(m_arrowFunctionContextLexicalEnvironmentRegister, protoScope, &m_calleeRegister, DoNotThrowIfNotFound, InitializationMode::Initialization);
</ins><span class="cx"> }
</span><span class="cx"> }
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecompilerBytecodeGeneratorh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h (213965 => 213966)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h        2017-03-15 00:18:24 UTC (rev 213965)
+++ trunk/Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h        2017-03-15 00:53:17 UTC (rev 213966)
</span><span class="lines">@@ -1025,6 +1025,7 @@
</span><span class="cx"> void initializeVarLexicalEnvironment(int symbolTableConstantIndex, SymbolTable* functionSymbolTable, bool hasCapturedVariables);
</span><span class="cx"> void initializeDefaultParameterValuesAndSetupFunctionScopeStack(FunctionParameters&, bool isSimpleParameterList, FunctionNode*, SymbolTable*, int symbolTableConstantIndex, const std::function<bool (UniquedStringImpl*)>& captures, bool shouldCreateArgumentsVariableInParameterScope);
</span><span class="cx"> void initializeArrowFunctionContextScopeIfNeeded(SymbolTable* functionSymbolTable = nullptr, bool canReuseLexicalEnvironment = false);
</span><ins>+ bool needsDerivedConstructorInArrowFunctionLexicalEnvironment();
</ins><span class="cx">
</span><span class="cx"> public:
</span><span class="cx"> JSString* addStringConstant(const Identifier&);
</span></span></pre>
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