[webkit-changes] [WebKit/WebKit] 7f321b: [JSC] Add functionality to dump Metadata statistics

[Tadeu Zagallo]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 7f321ba0c15adf730ed232d547a2ea389688cc0d
      https://github.com/WebKit/WebKit/commit/7f321ba0c15adf730ed232d547a2ea389688cc0d
  Author: Tadeu Zagallo <tzagallo at apple.com>
  Date:   2023-02-10 (Fri, 10 Feb 2023)

  Changed paths:
    M Source/JavaScriptCore/bytecode/UnlinkedMetadataTable.cpp
    M Source/JavaScriptCore/bytecode/UnlinkedMetadataTable.h
    M Source/JavaScriptCore/bytecode/UnlinkedMetadataTableInlines.h

  Log Message:
  -----------
  [JSC] Add functionality to dump Metadata statistics
https://bugs.webkit.org/show_bug.cgi?id=251984
rdar://105215210

Reviewed by Yusuke Suzuki.

While looking at ways to shrink the size of the metadata table, it was helpful
to dump some statistics of how much memory we're using and what opcodes contribute
to it the most.

* Source/JavaScriptCore/bytecode/UnlinkedMetadataTable.cpp:
(JSC::MetadataStatistics::reportMetadataStatistics):
(JSC::UnlinkedMetadataTable::finalize):
* Source/JavaScriptCore/bytecode/UnlinkedMetadataTable.h:
* Source/JavaScriptCore/bytecode/UnlinkedMetadataTableInlines.h:
(JSC::UnlinkedMetadataTable::link):

Canonical link: https://commits.webkit.org/260105@main