[webkit-changes] [WebKit/WebKit] 400b0a: [JSC] Use BinarySwitch on new BBQ BrTable

Tue Feb 21 09:21:36 PST 2023

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 400b0a9771275f56ba36b577a81b860158c6bc09
      https://github.com/WebKit/WebKit/commit/400b0a9771275f56ba36b577a81b860158c6bc09
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2023-02-21 (Tue, 21 Feb 2023)

  Changed paths:
    M Source/JavaScriptCore/wasm/WasmBBQJIT.cpp

  Log Message:
  -----------
  [JSC] Use BinarySwitch on new BBQ BrTable
https://bugs.webkit.org/show_bug.cgi?id=252655
rdar://105716386

Reviewed by Tadeu Zagallo.

As the same to Air BBQ IR generator, let's use BinarySwitch to efficiently jump to the large BrTable.
This improves tsf-wasm performance (only with new BBQ) from 0.845 to 2.904.

* Source/JavaScriptCore/wasm/WasmBBQJIT.cpp:
(JSC::Wasm::BBQJIT::ControlData::addBranch):
(JSC::Wasm::BBQJIT::addSwitch):

Canonical link: https://commits.webkit.org/260614@main