Title: [198803] trunk/Source/_javascript_Core
- Revision
- 198803
- Author
- [email protected]
- Date
- 2016-03-29 15:11:24 -0700 (Tue, 29 Mar 2016)
Log Message
We don't properly optimize TDZ checks when we declare a let variable without an initializer
https://bugs.webkit.org/show_bug.cgi?id=150453
Reviewed by Mark Lam.
* bytecompiler/NodesCodegen.cpp:
(JSC::EmptyLetExpression::emitBytecode):
Modified Paths
Diff
Modified: trunk/Source/_javascript_Core/ChangeLog (198802 => 198803)
--- trunk/Source/_javascript_Core/ChangeLog 2016-03-29 21:49:42 UTC (rev 198802)
+++ trunk/Source/_javascript_Core/ChangeLog 2016-03-29 22:11:24 UTC (rev 198803)
@@ -1,5 +1,15 @@
2016-03-29 Saam barati <[email protected]>
+ We don't properly optimize TDZ checks when we declare a let variable without an initializer
+ https://bugs.webkit.org/show_bug.cgi?id=150453
+
+ Reviewed by Mark Lam.
+
+ * bytecompiler/NodesCodegen.cpp:
+ (JSC::EmptyLetExpression::emitBytecode):
+
+2016-03-29 Saam barati <[email protected]>
+
Allow builtin JS functions to be intrinsics
https://bugs.webkit.org/show_bug.cgi?id=155960
Modified: trunk/Source/_javascript_Core/bytecompiler/NodesCodegen.cpp (198802 => 198803)
--- trunk/Source/_javascript_Core/bytecompiler/NodesCodegen.cpp 2016-03-29 21:49:42 UTC (rev 198802)
+++ trunk/Source/_javascript_Core/bytecompiler/NodesCodegen.cpp 2016-03-29 22:11:24 UTC (rev 198803)
@@ -2151,6 +2151,8 @@
generator.emitProfileType(value.get(), var, position(), JSTextPosition(-1, position().offset + m_ident.length(), -1));
}
+ generator.liftTDZCheckIfPossible(var);
+
// It's safe to return null here because this node will always be a child node of DeclarationStatement which ignores our return value.
return nullptr;
}
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