[webkit-changes] [WebKit/WebKit] 4d66b5: Optimize computeVisitedLinkHash()

[Chris Dumez]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 4d66b5dc7da014352ef32d6052b52fc8532ed02a
      https://github.com/WebKit/WebKit/commit/4d66b5dc7da014352ef32d6052b52fc8532ed02a
  Author: Chris Dumez <cdumez at apple.com>
  Date:   2023-09-28 (Thu, 28 Sep 2023)

  Changed paths:
    M Source/WebCore/platform/SharedStringHash.cpp

  Log Message:
  -----------
  Optimize computeVisitedLinkHash()
https://bugs.webkit.org/show_bug.cgi?id=262318

Reviewed by Ryosuke Niwa.

Optimize computeVisitedLinkHash():
- Avoid copying URL characters to a temporary buffer if the URL is
  already absolute (contains "://"). Instead, compute the hash
  straight from the URL characters.
- If the base URL is empty and the attribute value is 8 bit, use
  the LChar code path instead of the UChar one.

* Source/WebCore/platform/SharedStringHash.cpp:
(WebCore::computeSharedStringHashInline):
(WebCore::computeVisitedLinkHash):

Canonical link: https://commits.webkit.org/268609@main