[webkit-changes] [WebKit/WebKit] 925aa4: [JSC] Use dup-element for Vector Float Splat in ARM64

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 925aa4715170dcbbef304a6a8feecfee0c835ff2
      https://github.com/WebKit/WebKit/commit/925aa4715170dcbbef304a6a8feecfee0c835ff2
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2022-12-06 (Tue, 06 Dec 2022)

  Changed paths:
    M Source/JavaScriptCore/assembler/ARM64Assembler.h
    M Source/JavaScriptCore/assembler/MacroAssemblerARM64.h
    M Source/JavaScriptCore/b3/air/AirOpcode.opcodes

  Log Message:
  -----------
  [JSC] Use dup-element for Vector Float Splat in ARM64
https://bugs.webkit.org/show_bug.cgi?id=248841

Reviewed by Justin Michaud.

This patch implements vectorSplatFloat32 / vectorSplatFloat64 in ARM64 with dup-element so that
we can enable them in AirOpcode, simplifying our implementation for Splat in WasmAirIRGenerator.

* Source/JavaScriptCore/assembler/ARM64Assembler.h:
(JSC::ARM64Assembler::ins):
(JSC::ARM64Assembler::umov):
(JSC::ARM64Assembler::smov):
(JSC::ARM64Assembler::dupElement):
(JSC::ARM64Assembler::dupGeneral):
* Source/JavaScriptCore/assembler/MacroAssemblerARM64.h:
(JSC::MacroAssemblerARM64::vectorSplat):
(JSC::MacroAssemblerARM64::vectorSplatFloat32):
(JSC::MacroAssemblerARM64::vectorSplatFloat64):
* Source/JavaScriptCore/b3/air/AirOpcode.opcodes:

Canonical link: https://commits.webkit.org/257441@main