[webkit-changes] [WebKit/WebKit] e4344d: [JSC] Do not use DUP on 0-lane extract on ARM64

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: e4344d73a1e42f8f9259b1305fe6a81a0a87fb10
      https://github.com/WebKit/WebKit/commit/e4344d73a1e42f8f9259b1305fe6a81a0a87fb10
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2023-03-14 (Tue, 14 Mar 2023)

  Changed paths:
    M Source/JavaScriptCore/assembler/MacroAssemblerARM64.h

  Log Message:
  -----------
  [JSC] Do not use DUP on 0-lane extract on ARM64
https://bugs.webkit.org/show_bug.cgi?id=253925
rdar://106730133

Reviewed by Justin Michaud.

Just align ARM64 to x64: let's not use DUP on 0-lane extract. Just do move.

* Source/JavaScriptCore/assembler/MacroAssemblerARM64.h:
(JSC::MacroAssemblerARM64::vectorExtractLane):

Canonical link: https://commits.webkit.org/261669@main