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LibWeb: Cache lowercased tag name for getElementsByTagName() iteration
Instead of calling to_lowercase() on two strings for every step while iterating over the HTMLCollection returned by getElementsByTagName(), we now cache the lowercased tag name beforehand and reuse it. 2.4x speed-up on WebKit/PerformanceTests/DOM/DOMDivWalk.html
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5 changed files with 8 additions and 7 deletions
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@ -71,7 +71,7 @@ class Element
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public:
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virtual ~Element() override;
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DeprecatedString const& qualified_name() const { return m_qualified_name.as_string(); }
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DeprecatedFlyString const& qualified_name() const { return m_qualified_name.as_string(); }
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DeprecatedString const& html_uppercased_qualified_name() const { return m_html_uppercased_qualified_name; }
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virtual DeprecatedFlyString node_name() const final { return html_uppercased_qualified_name(); }
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DeprecatedFlyString const& local_name() const { return m_qualified_name.local_name(); }
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