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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/195876">195876</a></dd>
<dt>Author</dt> <dd>sbarati@apple.com</dd>
<dt>Date</dt> <dd>2016-01-29 18:05:17 -0800 (Fri, 29 Jan 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>Pack FunctionExecutable and UnlinkedFunctionExecutable harder
https://bugs.webkit.org/show_bug.cgi?id=153687
Reviewed by Andreas Kling.
This patch reduces FunctionExecutable from 120 to 104 bytes.
This patch reduces UnlinkedFunctionExecutable from 144 to 136 bytes.
* bytecode/ExecutableInfo.h:
* bytecode/UnlinkedFunctionExecutable.cpp:
(JSC::UnlinkedFunctionExecutable::UnlinkedFunctionExecutable):
* bytecode/UnlinkedFunctionExecutable.h:
* parser/ParserModes.h:
(JSC::functionNameScopeIsDynamic):
* runtime/Executable.cpp:
(JSC::ScriptExecutable::ScriptExecutable):
* runtime/Executable.h:
(JSC::ScriptExecutable::needsActivation):
(JSC::ScriptExecutable::isArrowFunctionContext):
(JSC::ScriptExecutable::isStrictMode):
(JSC::ScriptExecutable::derivedContextType):
(JSC::ScriptExecutable::ecmaMode):
(JSC::ScriptExecutable::finishCreation):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecodeExecutableInfoh">trunk/Source/JavaScriptCore/bytecode/ExecutableInfo.h</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecodeUnlinkedFunctionExecutablecpp">trunk/Source/JavaScriptCore/bytecode/UnlinkedFunctionExecutable.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecodeUnlinkedFunctionExecutableh">trunk/Source/JavaScriptCore/bytecode/UnlinkedFunctionExecutable.h</a></li>
<li><a href="#trunkSourceJavaScriptCoreparserParserModesh">trunk/Source/JavaScriptCore/parser/ParserModes.h</a></li>
<li><a href="#trunkSourceJavaScriptCoreruntimeExecutablecpp">trunk/Source/JavaScriptCore/runtime/Executable.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreruntimeExecutableh">trunk/Source/JavaScriptCore/runtime/Executable.h</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (195875 => 195876)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2016-01-30 01:53:53 UTC (rev 195875)
+++ trunk/Source/JavaScriptCore/ChangeLog 2016-01-30 02:05:17 UTC (rev 195876)
</span><span class="lines">@@ -1,5 +1,31 @@
</span><span class="cx"> 2016-01-29 Saam barati <sbarati@apple.com>
</span><span class="cx">
</span><ins>+ Pack FunctionExecutable and UnlinkedFunctionExecutable harder
+ https://bugs.webkit.org/show_bug.cgi?id=153687
+
+ Reviewed by Andreas Kling.
+
+ This patch reduces FunctionExecutable from 120 to 104 bytes.
+ This patch reduces UnlinkedFunctionExecutable from 144 to 136 bytes.
+
+ * bytecode/ExecutableInfo.h:
+ * bytecode/UnlinkedFunctionExecutable.cpp:
+ (JSC::UnlinkedFunctionExecutable::UnlinkedFunctionExecutable):
+ * bytecode/UnlinkedFunctionExecutable.h:
+ * parser/ParserModes.h:
+ (JSC::functionNameScopeIsDynamic):
+ * runtime/Executable.cpp:
+ (JSC::ScriptExecutable::ScriptExecutable):
+ * runtime/Executable.h:
+ (JSC::ScriptExecutable::needsActivation):
+ (JSC::ScriptExecutable::isArrowFunctionContext):
+ (JSC::ScriptExecutable::isStrictMode):
+ (JSC::ScriptExecutable::derivedContextType):
+ (JSC::ScriptExecutable::ecmaMode):
+ (JSC::ScriptExecutable::finishCreation):
+
+2016-01-29 Saam barati <sbarati@apple.com>
+
</ins><span class="cx"> JSC Sampling Profiler: Come up with a (program counter => CodeOrigin) mapping
</span><span class="cx"> https://bugs.webkit.org/show_bug.cgi?id=152629
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecodeExecutableInfoh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecode/ExecutableInfo.h (195875 => 195876)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecode/ExecutableInfo.h 2016-01-30 01:53:53 UTC (rev 195875)
+++ trunk/Source/JavaScriptCore/bytecode/ExecutableInfo.h 2016-01-30 02:05:17 UTC (rev 195876)
</span><span class="lines">@@ -30,7 +30,7 @@
</span><span class="cx">
</span><span class="cx"> namespace JSC {
</span><span class="cx">
</span><del>-enum class DerivedContextType { None, DerivedConstructorContext, DerivedMethodContext };
</del><ins>+enum class DerivedContextType : uint8_t { None, DerivedConstructorContext, DerivedMethodContext };
</ins><span class="cx">
</span><span class="cx"> // FIXME: These flags, ParserModes and propagation to XXXCodeBlocks should be reorganized.
</span><span class="cx"> // https://bugs.webkit.org/show_bug.cgi?id=151547
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecodeUnlinkedFunctionExecutablecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecode/UnlinkedFunctionExecutable.cpp (195875 => 195876)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecode/UnlinkedFunctionExecutable.cpp 2016-01-30 01:53:53 UTC (rev 195875)
+++ trunk/Source/JavaScriptCore/bytecode/UnlinkedFunctionExecutable.cpp 2016-01-30 02:05:17 UTC (rev 195876)
</span><span class="lines">@@ -80,9 +80,6 @@
</span><span class="cx">
</span><span class="cx"> UnlinkedFunctionExecutable::UnlinkedFunctionExecutable(VM* vm, Structure* structure, const SourceCode& source, RefPtr<SourceProvider>&& sourceOverride, FunctionMetadataNode* node, UnlinkedFunctionKind kind, ConstructAbility constructAbility, VariableEnvironment& parentScopeTDZVariables, DerivedContextType derivedContextType)
</span><span class="cx"> : Base(*vm, structure)
</span><del>- , m_name(node->ident())
- , m_inferredName(node->inferredName())
- , m_sourceOverride(WTFMove(sourceOverride))
</del><span class="cx"> , m_firstLineOffset(node->firstLine() - source.firstLine())
</span><span class="cx"> , m_lineCount(node->lastLine() - node->firstLine())
</span><span class="cx"> , m_unlinkedFunctionNameStart(node->functionNameStart() - source.startOffset())
</span><span class="lines">@@ -94,7 +91,6 @@
</span><span class="cx"> , m_typeProfilingStartOffset(node->functionKeywordStart())
</span><span class="cx"> , m_typeProfilingEndOffset(node->startStartOffset() + node->source().length() - 1)
</span><span class="cx"> , m_parameterCount(node->parameterCount())
</span><del>- , m_parseMode(node->parseMode())
</del><span class="cx"> , m_features(0)
</span><span class="cx"> , m_isInStrictContext(node->isInStrictContext())
</span><span class="cx"> , m_hasCapturedVariables(false)
</span><span class="lines">@@ -104,6 +100,10 @@
</span><span class="cx"> , m_functionMode(node->functionMode())
</span><span class="cx"> , m_superBinding(static_cast<unsigned>(node->superBinding()))
</span><span class="cx"> , m_derivedContextType(static_cast<unsigned>(derivedContextType))
</span><ins>+ , m_sourceParseMode(static_cast<unsigned>(node->parseMode()))
+ , m_name(node->ident())
+ , m_inferredName(node->inferredName())
+ , m_sourceOverride(WTFMove(sourceOverride))
</ins><span class="cx"> {
</span><span class="cx"> ASSERT(m_constructorKind == static_cast<unsigned>(node->constructorKind()));
</span><span class="cx"> m_parentScopeTDZVariables.swap(parentScopeTDZVariables);
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecodeUnlinkedFunctionExecutableh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecode/UnlinkedFunctionExecutable.h (195875 => 195876)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecode/UnlinkedFunctionExecutable.h 2016-01-30 01:53:53 UTC (rev 195875)
+++ trunk/Source/JavaScriptCore/bytecode/UnlinkedFunctionExecutable.h 2016-01-30 02:05:17 UTC (rev 195876)
</span><span class="lines">@@ -79,7 +79,7 @@
</span><span class="cx"> JSString* nameValue() const { return m_nameValue.get(); }
</span><span class="cx"> void setNameValue(VM& vm, JSString* nameValue) { m_nameValue.set(vm, this, nameValue); }
</span><span class="cx"> unsigned parameterCount() const { return m_parameterCount; };
</span><del>- SourceParseMode parseMode() const { return m_parseMode; };
</del><ins>+ SourceParseMode parseMode() const { return static_cast<SourceParseMode>(m_sourceParseMode); };
</ins><span class="cx"> bool isInStrictContext() const { return m_isInStrictContext; }
</span><span class="cx"> FunctionMode functionMode() const { return static_cast<FunctionMode>(m_functionMode); }
</span><span class="cx"> ConstructorKind constructorKind() const { return static_cast<ConstructorKind>(m_constructorKind); }
</span><span class="lines">@@ -128,21 +128,13 @@
</span><span class="cx"> bool isClassConstructorFunction() const { return constructorKind() != ConstructorKind::None; }
</span><span class="cx"> const VariableEnvironment* parentScopeTDZVariables() const { return &m_parentScopeTDZVariables; }
</span><span class="cx">
</span><del>- bool isArrowFunction() const { return m_parseMode == SourceParseMode::ArrowFunctionMode; }
</del><ins>+ bool isArrowFunction() const { return parseMode() == SourceParseMode::ArrowFunctionMode; }
</ins><span class="cx">
</span><span class="cx"> JSC::DerivedContextType derivedContextType() const {return static_cast<JSC::DerivedContextType>(m_derivedContextType); }
</span><span class="cx">
</span><span class="cx"> private:
</span><span class="cx"> UnlinkedFunctionExecutable(VM*, Structure*, const SourceCode&, RefPtr<SourceProvider>&& sourceOverride, FunctionMetadataNode*, UnlinkedFunctionKind, ConstructAbility, VariableEnvironment&, JSC::DerivedContextType);
</span><span class="cx">
</span><del>- WriteBarrier<UnlinkedFunctionCodeBlock> m_unlinkedCodeBlockForCall;
- WriteBarrier<UnlinkedFunctionCodeBlock> m_unlinkedCodeBlockForConstruct;
-
- Identifier m_name;
- Identifier m_inferredName;
- WriteBarrier<JSString> m_nameValue;
- RefPtr<SourceProvider> m_sourceOverride;
- VariableEnvironment m_parentScopeTDZVariables;
</del><span class="cx"> unsigned m_firstLineOffset;
</span><span class="cx"> unsigned m_lineCount;
</span><span class="cx"> unsigned m_unlinkedFunctionNameStart;
</span><span class="lines">@@ -154,10 +146,7 @@
</span><span class="cx"> unsigned m_typeProfilingStartOffset;
</span><span class="cx"> unsigned m_typeProfilingEndOffset;
</span><span class="cx"> unsigned m_parameterCount;
</span><del>- SourceParseMode m_parseMode;
-
</del><span class="cx"> CodeFeatures m_features;
</span><del>-
</del><span class="cx"> unsigned m_isInStrictContext : 1;
</span><span class="cx"> unsigned m_hasCapturedVariables : 1;
</span><span class="cx"> unsigned m_isBuiltinFunction : 1;
</span><span class="lines">@@ -166,7 +155,18 @@
</span><span class="cx"> unsigned m_functionMode : 1; // FunctionMode
</span><span class="cx"> unsigned m_superBinding : 1;
</span><span class="cx"> unsigned m_derivedContextType: 2;
</span><ins>+ unsigned m_sourceParseMode : 4; // SourceParseMode
</ins><span class="cx">
</span><ins>+ WriteBarrier<UnlinkedFunctionCodeBlock> m_unlinkedCodeBlockForCall;
+ WriteBarrier<UnlinkedFunctionCodeBlock> m_unlinkedCodeBlockForConstruct;
+
+ Identifier m_name;
+ Identifier m_inferredName;
+ WriteBarrier<JSString> m_nameValue;
+ RefPtr<SourceProvider> m_sourceOverride;
+
+ VariableEnvironment m_parentScopeTDZVariables;
+
</ins><span class="cx"> protected:
</span><span class="cx"> void finishCreation(VM& vm)
</span><span class="cx"> {
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreparserParserModesh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/parser/ParserModes.h (195875 => 195876)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/parser/ParserModes.h 2016-01-30 01:53:53 UTC (rev 195875)
+++ trunk/Source/JavaScriptCore/parser/ParserModes.h 2016-01-30 02:05:17 UTC (rev 195876)
</span><span class="lines">@@ -44,7 +44,7 @@
</span><span class="cx">
</span><span class="cx"> enum FunctionMode { FunctionExpression, FunctionDeclaration };
</span><span class="cx">
</span><del>-enum class SourceParseMode {
</del><ins>+enum class SourceParseMode : uint8_t {
</ins><span class="cx"> NormalFunctionMode,
</span><span class="cx"> GeneratorBodyMode,
</span><span class="cx"> GeneratorWrapperFunctionMode,
</span><span class="lines">@@ -145,7 +145,7 @@
</span><span class="cx"> return true;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-typedef unsigned CodeFeatures;
</del><ins>+typedef uint16_t CodeFeatures;
</ins><span class="cx">
</span><span class="cx"> const CodeFeatures NoFeatures = 0;
</span><span class="cx"> const CodeFeatures EvalFeature = 1 << 0;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreruntimeExecutablecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/runtime/Executable.cpp (195875 => 195876)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/runtime/Executable.cpp 2016-01-30 01:53:53 UTC (rev 195875)
+++ trunk/Source/JavaScriptCore/runtime/Executable.cpp 2016-01-30 02:05:17 UTC (rev 195876)
</span><span class="lines">@@ -133,13 +133,13 @@
</span><span class="cx">
</span><span class="cx"> ScriptExecutable::ScriptExecutable(Structure* structure, VM& vm, const SourceCode& source, bool isInStrictContext, DerivedContextType derivedContextType, bool isInArrowFunctionContext)
</span><span class="cx"> : ExecutableBase(vm, structure, NUM_PARAMETERS_NOT_COMPILED)
</span><del>- , m_source(source)
</del><span class="cx"> , m_features(isInStrictContext ? StrictModeFeature : 0)
</span><ins>+ , m_didTryToEnterInLoop(false)
</ins><span class="cx"> , m_hasCapturedVariables(false)
</span><span class="cx"> , m_neverInline(false)
</span><del>- , m_didTryToEnterInLoop(false)
- , m_derivedContextType(derivedContextType)
</del><ins>+ , m_neverOptimize(false)
</ins><span class="cx"> , m_isArrowFunctionContext(isInArrowFunctionContext)
</span><ins>+ , m_derivedContextType(static_cast<unsigned>(derivedContextType))
</ins><span class="cx"> , m_overrideLineNumber(-1)
</span><span class="cx"> , m_firstLine(-1)
</span><span class="cx"> , m_lastLine(-1)
</span><span class="lines">@@ -147,6 +147,7 @@
</span><span class="cx"> , m_endColumn(UINT_MAX)
</span><span class="cx"> , m_typeProfilingStartOffset(UINT_MAX)
</span><span class="cx"> , m_typeProfilingEndOffset(UINT_MAX)
</span><ins>+ , m_source(source)
</ins><span class="cx"> {
</span><span class="cx"> }
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreruntimeExecutableh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/runtime/Executable.h (195875 => 195876)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/runtime/Executable.h 2016-01-30 01:53:53 UTC (rev 195875)
+++ trunk/Source/JavaScriptCore/runtime/Executable.h 2016-01-30 02:05:17 UTC (rev 195876)
</span><span class="lines">@@ -350,7 +350,7 @@
</span><span class="cx"> bool usesArguments() const { return m_features & ArgumentsFeature; }
</span><span class="cx"> bool isArrowFunctionContext() const { return m_isArrowFunctionContext; }
</span><span class="cx"> bool isStrictMode() const { return m_features & StrictModeFeature; }
</span><del>- DerivedContextType derivedContextType() const { return m_derivedContextType; }
</del><ins>+ DerivedContextType derivedContextType() const { return static_cast<DerivedContextType>(m_derivedContextType); }
</ins><span class="cx">
</span><span class="cx"> ECMAMode ecmaMode() const { return isStrictMode() ? StrictMode : NotStrictMode; }
</span><span class="cx">
</span><span class="lines">@@ -413,14 +413,14 @@
</span><span class="cx"> #endif
</span><span class="cx"> }
</span><span class="cx">
</span><del>- SourceCode m_source;
</del><span class="cx"> CodeFeatures m_features;
</span><del>- bool m_hasCapturedVariables;
- bool m_neverInline;
- bool m_neverOptimize { false };
</del><span class="cx"> bool m_didTryToEnterInLoop;
</span><del>- DerivedContextType m_derivedContextType;
- bool m_isArrowFunctionContext;
</del><ins>+ bool m_hasCapturedVariables : 1;
+ bool m_neverInline : 1;
+ bool m_neverOptimize : 1;
+ bool m_isArrowFunctionContext : 1;
+ unsigned m_derivedContextType : 2; // DerivedContextType
+
</ins><span class="cx"> int m_overrideLineNumber;
</span><span class="cx"> int m_firstLine;
</span><span class="cx"> int m_lastLine;
</span><span class="lines">@@ -428,6 +428,7 @@
</span><span class="cx"> unsigned m_endColumn;
</span><span class="cx"> unsigned m_typeProfilingStartOffset;
</span><span class="cx"> unsigned m_typeProfilingEndOffset;
</span><ins>+ SourceCode m_source;
</ins><span class="cx"> };
</span><span class="cx">
</span><span class="cx"> class EvalExecutable final : public ScriptExecutable {
</span><span class="lines">@@ -699,11 +700,11 @@
</span><span class="cx">
</span><span class="cx"> friend class ScriptExecutable;
</span><span class="cx">
</span><ins>+ unsigned m_parametersStartOffset;
</ins><span class="cx"> WriteBarrier<UnlinkedFunctionExecutable> m_unlinkedExecutable;
</span><span class="cx"> WriteBarrier<FunctionCodeBlock> m_codeBlockForCall;
</span><span class="cx"> WriteBarrier<FunctionCodeBlock> m_codeBlockForConstruct;
</span><span class="cx"> RefPtr<TypeSet> m_returnStatementTypeSet;
</span><del>- unsigned m_parametersStartOffset;
</del><span class="cx"> WriteBarrier<InferredValue> m_singletonFunction;
</span><span class="cx"> };
</span><span class="cx">
</span></span></pre>
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