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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/189086">189086</a></dd>
<dt>Author</dt> <dd>mark.lam@apple.com</dd>
<dt>Date</dt> <dd>2015-08-27 22:59:44 -0700 (Thu, 27 Aug 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>Add noDFG() to jsc to prevent DFG compilation of a specified function.
https://bugs.webkit.org/show_bug.cgi?id=148559
Reviewed by Geoffrey Garen and Saam Barati.
* API/JSCTestRunnerUtils.cpp:
(JSC::setNeverInline):
(JSC::setNeverOptimize):
* API/JSCTestRunnerUtils.h:
* bytecode/CodeBlock.cpp:
(JSC::CodeBlock::dumpAssumingJITType):
* dfg/DFGCapabilities.cpp:
(JSC::DFG::mightCompileEval):
(JSC::DFG::mightCompileProgram):
(JSC::DFG::mightCompileFunctionForCall):
(JSC::DFG::mightCompileFunctionForConstruct):
(JSC::DFG::mightInlineFunctionForCall):
* jsc.cpp:
(GlobalObject::finishCreation):
(functionNoDFG):
* runtime/Executable.h:
(JSC::ScriptExecutable::ecmaMode):
(JSC::ScriptExecutable::setNeverInline):
(JSC::ScriptExecutable::setNeverOptimize):
(JSC::ScriptExecutable::setDidTryToEnterInLoop):
(JSC::ScriptExecutable::neverInline):
(JSC::ScriptExecutable::neverOptimize):
(JSC::ScriptExecutable::didTryToEnterInLoop):
(JSC::ScriptExecutable::isInliningCandidate):
(JSC::ScriptExecutable::isOkToOptimize):
(JSC::ScriptExecutable::addressOfDidTryToEnterInLoop):
* runtime/TestRunnerUtils.cpp:
(JSC::setNeverInline):
(JSC::setNeverOptimize):
(JSC::optimizeNextInvocation):
* runtime/TestRunnerUtils.h:</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreAPIJSCTestRunnerUtilscpp">trunk/Source/JavaScriptCore/API/JSCTestRunnerUtils.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreAPIJSCTestRunnerUtilsh">trunk/Source/JavaScriptCore/API/JSCTestRunnerUtils.h</a></li>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCorebytecodeCodeBlockcpp">trunk/Source/JavaScriptCore/bytecode/CodeBlock.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoredfgDFGCapabilitiescpp">trunk/Source/JavaScriptCore/dfg/DFGCapabilities.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCorejsccpp">trunk/Source/JavaScriptCore/jsc.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreruntimeExecutableh">trunk/Source/JavaScriptCore/runtime/Executable.h</a></li>
<li><a href="#trunkSourceJavaScriptCoreruntimeTestRunnerUtilscpp">trunk/Source/JavaScriptCore/runtime/TestRunnerUtils.cpp</a></li>
<li><a href="#trunkSourceJavaScriptCoreruntimeTestRunnerUtilsh">trunk/Source/JavaScriptCore/runtime/TestRunnerUtils.h</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceJavaScriptCoreAPIJSCTestRunnerUtilscpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/API/JSCTestRunnerUtils.cpp (189085 => 189086)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/API/JSCTestRunnerUtils.cpp 2015-08-28 05:19:34 UTC (rev 189085)
+++ trunk/Source/JavaScriptCore/API/JSCTestRunnerUtils.cpp 2015-08-28 05:59:44 UTC (rev 189086)
</span><span class="lines">@@ -46,5 +46,12 @@
</span><span class="cx"> return toRef(exec, setNeverInline(toJS(exec, theFunctionValueRef)));
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+JSValueRef setNeverOptimize(JSContextRef context, JSValueRef theFunctionValueRef)
+{
+ ExecState* exec= toJS(context);
+ JSLockHolder holder(exec);
+ return toRef(exec, setNeverOptimize(toJS(exec, theFunctionValueRef)));
+}
+
</ins><span class="cx"> } // namespace JSC
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreAPIJSCTestRunnerUtilsh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/API/JSCTestRunnerUtils.h (189085 => 189086)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/API/JSCTestRunnerUtils.h 2015-08-28 05:19:34 UTC (rev 189085)
+++ trunk/Source/JavaScriptCore/API/JSCTestRunnerUtils.h 2015-08-28 05:59:44 UTC (rev 189086)
</span><span class="lines">@@ -33,6 +33,7 @@
</span><span class="cx">
</span><span class="cx"> JS_EXPORT_PRIVATE JSValueRef numberOfDFGCompiles(JSContextRef, JSValueRef theFunction);
</span><span class="cx"> JS_EXPORT_PRIVATE JSValueRef setNeverInline(JSContextRef, JSValueRef theFunction);
</span><ins>+JS_EXPORT_PRIVATE JSValueRef setNeverOptimize(JSContextRef, JSValueRef theFunction);
</ins><span class="cx">
</span><span class="cx"> } // namespace JSC
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (189085 => 189086)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2015-08-28 05:19:34 UTC (rev 189085)
+++ trunk/Source/JavaScriptCore/ChangeLog 2015-08-28 05:59:44 UTC (rev 189086)
</span><span class="lines">@@ -1,3 +1,42 @@
</span><ins>+2015-08-27 Mark Lam <mark.lam@apple.com>
+
+ Add noDFG() to jsc to prevent DFG compilation of a specified function.
+ https://bugs.webkit.org/show_bug.cgi?id=148559
+
+ Reviewed by Geoffrey Garen and Saam Barati.
+
+ * API/JSCTestRunnerUtils.cpp:
+ (JSC::setNeverInline):
+ (JSC::setNeverOptimize):
+ * API/JSCTestRunnerUtils.h:
+ * bytecode/CodeBlock.cpp:
+ (JSC::CodeBlock::dumpAssumingJITType):
+ * dfg/DFGCapabilities.cpp:
+ (JSC::DFG::mightCompileEval):
+ (JSC::DFG::mightCompileProgram):
+ (JSC::DFG::mightCompileFunctionForCall):
+ (JSC::DFG::mightCompileFunctionForConstruct):
+ (JSC::DFG::mightInlineFunctionForCall):
+ * jsc.cpp:
+ (GlobalObject::finishCreation):
+ (functionNoDFG):
+ * runtime/Executable.h:
+ (JSC::ScriptExecutable::ecmaMode):
+ (JSC::ScriptExecutable::setNeverInline):
+ (JSC::ScriptExecutable::setNeverOptimize):
+ (JSC::ScriptExecutable::setDidTryToEnterInLoop):
+ (JSC::ScriptExecutable::neverInline):
+ (JSC::ScriptExecutable::neverOptimize):
+ (JSC::ScriptExecutable::didTryToEnterInLoop):
+ (JSC::ScriptExecutable::isInliningCandidate):
+ (JSC::ScriptExecutable::isOkToOptimize):
+ (JSC::ScriptExecutable::addressOfDidTryToEnterInLoop):
+ * runtime/TestRunnerUtils.cpp:
+ (JSC::setNeverInline):
+ (JSC::setNeverOptimize):
+ (JSC::optimizeNextInvocation):
+ * runtime/TestRunnerUtils.h:
+
</ins><span class="cx"> 2015-08-27 Commit Queue <commit-queue@webkit.org>
</span><span class="cx">
</span><span class="cx"> Unreviewed, rolling out r189064 and r189084.
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorebytecodeCodeBlockcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/bytecode/CodeBlock.cpp (189085 => 189086)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/bytecode/CodeBlock.cpp 2015-08-28 05:19:34 UTC (rev 189085)
+++ trunk/Source/JavaScriptCore/bytecode/CodeBlock.cpp 2015-08-28 05:59:44 UTC (rev 189086)
</span><span class="lines">@@ -157,6 +157,8 @@
</span><span class="cx"> out.print(" (ShouldAlwaysBeInlined)");
</span><span class="cx"> if (ownerExecutable()->neverInline())
</span><span class="cx"> out.print(" (NeverInline)");
</span><ins>+ if (ownerExecutable()->neverOptimize())
+ out.print(" (NeverOptimize)");
</ins><span class="cx"> if (ownerExecutable()->didTryToEnterInLoop())
</span><span class="cx"> out.print(" (DidTryToEnterInLoop)");
</span><span class="cx"> if (ownerExecutable()->isStrictMode())
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoredfgDFGCapabilitiescpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/dfg/DFGCapabilities.cpp (189085 => 189086)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/dfg/DFGCapabilities.cpp 2015-08-28 05:19:34 UTC (rev 189085)
+++ trunk/Source/JavaScriptCore/dfg/DFGCapabilities.cpp 2015-08-28 05:59:44 UTC (rev 189086)
</span><span class="lines">@@ -50,22 +50,26 @@
</span><span class="cx"> bool mightCompileEval(CodeBlock* codeBlock)
</span><span class="cx"> {
</span><span class="cx"> return isSupported()
</span><del>- && codeBlock->instructionCount() <= Options::maximumOptimizationCandidateInstructionCount();
</del><ins>+ && codeBlock->instructionCount() <= Options::maximumOptimizationCandidateInstructionCount()
+ && codeBlock->ownerExecutable()->isOkToOptimize();
</ins><span class="cx"> }
</span><span class="cx"> bool mightCompileProgram(CodeBlock* codeBlock)
</span><span class="cx"> {
</span><span class="cx"> return isSupported()
</span><del>- && codeBlock->instructionCount() <= Options::maximumOptimizationCandidateInstructionCount();
</del><ins>+ && codeBlock->instructionCount() <= Options::maximumOptimizationCandidateInstructionCount()
+ && codeBlock->ownerExecutable()->isOkToOptimize();
</ins><span class="cx"> }
</span><span class="cx"> bool mightCompileFunctionForCall(CodeBlock* codeBlock)
</span><span class="cx"> {
</span><span class="cx"> return isSupported()
</span><del>- && codeBlock->instructionCount() <= Options::maximumOptimizationCandidateInstructionCount();
</del><ins>+ && codeBlock->instructionCount() <= Options::maximumOptimizationCandidateInstructionCount()
+ && codeBlock->ownerExecutable()->isOkToOptimize();
</ins><span class="cx"> }
</span><span class="cx"> bool mightCompileFunctionForConstruct(CodeBlock* codeBlock)
</span><span class="cx"> {
</span><span class="cx"> return isSupported()
</span><del>- && codeBlock->instructionCount() <= Options::maximumOptimizationCandidateInstructionCount();
</del><ins>+ && codeBlock->instructionCount() <= Options::maximumOptimizationCandidateInstructionCount()
+ && codeBlock->ownerExecutable()->isOkToOptimize();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> bool mightInlineFunctionForCall(CodeBlock* codeBlock)
</span></span></pre></div>
<a id="trunkSourceJavaScriptCorejsccpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/jsc.cpp (189085 => 189086)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/jsc.cpp 2015-08-28 05:19:34 UTC (rev 189085)
+++ trunk/Source/JavaScriptCore/jsc.cpp 2015-08-28 05:59:44 UTC (rev 189086)
</span><span class="lines">@@ -473,6 +473,7 @@
</span><span class="cx"> static EncodedJSValue JSC_HOST_CALL functionReadline(ExecState*);
</span><span class="cx"> static EncodedJSValue JSC_HOST_CALL functionPreciseTime(ExecState*);
</span><span class="cx"> static EncodedJSValue JSC_HOST_CALL functionNeverInlineFunction(ExecState*);
</span><ins>+static EncodedJSValue JSC_HOST_CALL functionNoDFG(ExecState*);
</ins><span class="cx"> static EncodedJSValue JSC_HOST_CALL functionOptimizeNextInvocation(ExecState*);
</span><span class="cx"> static EncodedJSValue JSC_HOST_CALL functionNumberOfDFGCompiles(ExecState*);
</span><span class="cx"> static EncodedJSValue JSC_HOST_CALL functionReoptimizationRetryCount(ExecState*);
</span><span class="lines">@@ -631,6 +632,7 @@
</span><span class="cx"> addFunction(vm, "preciseTime", functionPreciseTime, 0);
</span><span class="cx"> addFunction(vm, "neverInlineFunction", functionNeverInlineFunction, 1);
</span><span class="cx"> addFunction(vm, "noInline", functionNeverInlineFunction, 1);
</span><ins>+ addFunction(vm, "noDFG", functionNoDFG, 1);
</ins><span class="cx"> addFunction(vm, "numberOfDFGCompiles", functionNumberOfDFGCompiles, 1);
</span><span class="cx"> addFunction(vm, "optimizeNextInvocation", functionOptimizeNextInvocation, 1);
</span><span class="cx"> addFunction(vm, "reoptimizationRetryCount", functionReoptimizationRetryCount, 1);
</span><span class="lines">@@ -1179,6 +1181,11 @@
</span><span class="cx"> return JSValue::encode(setNeverInline(exec));
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+EncodedJSValue JSC_HOST_CALL functionNoDFG(ExecState* exec)
+{
+ return JSValue::encode(setNeverOptimize(exec));
+}
+
</ins><span class="cx"> EncodedJSValue JSC_HOST_CALL functionOptimizeNextInvocation(ExecState* exec)
</span><span class="cx"> {
</span><span class="cx"> return JSValue::encode(optimizeNextInvocation(exec));
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreruntimeExecutableh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/runtime/Executable.h (189085 => 189086)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/runtime/Executable.h 2015-08-28 05:19:34 UTC (rev 189085)
+++ trunk/Source/JavaScriptCore/runtime/Executable.h 2015-08-28 05:59:44 UTC (rev 189086)
</span><span class="lines">@@ -374,10 +374,13 @@
</span><span class="cx"> ECMAMode ecmaMode() const { return isStrictMode() ? StrictMode : NotStrictMode; }
</span><span class="cx">
</span><span class="cx"> void setNeverInline(bool value) { m_neverInline = value; }
</span><ins>+ void setNeverOptimize(bool value) { m_neverOptimize = value; }
</ins><span class="cx"> void setDidTryToEnterInLoop(bool value) { m_didTryToEnterInLoop = value; }
</span><span class="cx"> bool neverInline() const { return m_neverInline; }
</span><ins>+ bool neverOptimize() const { return m_neverOptimize; }
</ins><span class="cx"> bool didTryToEnterInLoop() const { return m_didTryToEnterInLoop; }
</span><span class="cx"> bool isInliningCandidate() const { return !neverInline(); }
</span><ins>+ bool isOkToOptimize() const { return !neverOptimize(); }
</ins><span class="cx">
</span><span class="cx"> bool* addressOfDidTryToEnterInLoop() { return &m_didTryToEnterInLoop; }
</span><span class="cx">
</span><span class="lines">@@ -431,6 +434,7 @@
</span><span class="cx"> CodeFeatures m_features;
</span><span class="cx"> bool m_hasCapturedVariables;
</span><span class="cx"> bool m_neverInline;
</span><ins>+ bool m_neverOptimize { false };
</ins><span class="cx"> bool m_didTryToEnterInLoop;
</span><span class="cx"> int m_overrideLineNumber;
</span><span class="cx"> int m_firstLine;
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreruntimeTestRunnerUtilscpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/runtime/TestRunnerUtils.cpp (189085 => 189086)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/runtime/TestRunnerUtils.cpp 2015-08-28 05:19:34 UTC (rev 189085)
+++ trunk/Source/JavaScriptCore/runtime/TestRunnerUtils.cpp 2015-08-28 05:59:44 UTC (rev 189086)
</span><span class="lines">@@ -83,6 +83,14 @@
</span><span class="cx"> return jsUndefined();
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+JSValue setNeverOptimize(JSValue theFunctionValue)
+{
+ if (FunctionExecutable* executable = getExecutableForFunction(theFunctionValue))
+ executable->setNeverOptimize(true);
+
+ return jsUndefined();
+}
+
</ins><span class="cx"> JSValue optimizeNextInvocation(JSValue theFunctionValue)
</span><span class="cx"> {
</span><span class="cx"> #if ENABLE(JIT)
</span><span class="lines">@@ -109,6 +117,13 @@
</span><span class="cx"> return setNeverInline(exec->uncheckedArgument(0));
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+JSValue setNeverOptimize(ExecState* exec)
+{
+ if (exec->argumentCount() < 1)
+ return jsUndefined();
+ return setNeverOptimize(exec->uncheckedArgument(0));
+}
+
</ins><span class="cx"> JSValue optimizeNextInvocation(ExecState* exec)
</span><span class="cx"> {
</span><span class="cx"> if (exec->argumentCount() < 1)
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreruntimeTestRunnerUtilsh"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/runtime/TestRunnerUtils.h (189085 => 189086)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/runtime/TestRunnerUtils.h 2015-08-28 05:19:34 UTC (rev 189085)
+++ trunk/Source/JavaScriptCore/runtime/TestRunnerUtils.h 2015-08-28 05:59:44 UTC (rev 189086)
</span><span class="lines">@@ -38,10 +38,12 @@
</span><span class="cx">
</span><span class="cx"> JS_EXPORT_PRIVATE JSValue numberOfDFGCompiles(JSValue function);
</span><span class="cx"> JS_EXPORT_PRIVATE JSValue setNeverInline(JSValue function);
</span><ins>+JS_EXPORT_PRIVATE JSValue setNeverOptimize(JSValue function);
</ins><span class="cx"> JS_EXPORT_PRIVATE JSValue optimizeNextInvocation(JSValue function);
</span><span class="cx">
</span><span class="cx"> JS_EXPORT_PRIVATE JSValue numberOfDFGCompiles(ExecState*);
</span><span class="cx"> JS_EXPORT_PRIVATE JSValue setNeverInline(ExecState*);
</span><ins>+JS_EXPORT_PRIVATE JSValue setNeverOptimize(ExecState*);
</ins><span class="cx"> JS_EXPORT_PRIVATE JSValue optimizeNextInvocation(ExecState*);
</span><span class="cx">
</span><span class="cx"> JS_EXPORT_PRIVATE unsigned numberOfExceptionFuzzChecks();
</span></span></pre>
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