[webkit-changes] [WebKit/WebKit] 92eaeb: [JSC] Use ARM64 ubfiz for Shl(ZExt32(Trunc(value))...

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 92eaeb4b37d9179720ff4fc5809eb1ed0bd94f3b
      https://github.com/WebKit/WebKit/commit/92eaeb4b37d9179720ff4fc5809eb1ed0bd94f3b
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2023-05-22 (Mon, 22 May 2023)

  Changed paths:
    M Source/JavaScriptCore/b3/B3LowerToAir.cpp

  Log Message:
  -----------
  [JSC] Use ARM64 ubfiz for Shl(ZExt32(Trunc(value)), Imm)
https://bugs.webkit.org/show_bug.cgi?id=257113
rdar://109645676

Reviewed by Keith Miller.

We are missing ubfiz optimization for ZExt32 while we prefer that than BitAnd.
This patch just extends it for ZExt32.

* Source/JavaScriptCore/b3/B3LowerToAir.cpp:

Canonical link: https://commits.webkit.org/264360@main