[webkit-changes] [WebKit/WebKit] 46b5fd: [SIMD] Intel support for splat

[Yijia Huang]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 46b5fd3c0928a534c956bcda8820af4e97e9810c
      https://github.com/WebKit/WebKit/commit/46b5fd3c0928a534c956bcda8820af4e97e9810c
  Author: Yijia Huang <hyjorc1 at gmail.com>
  Date:   2022-12-02 (Fri, 02 Dec 2022)

  Changed paths:
    M Source/JavaScriptCore/assembler/MacroAssemblerX86_64.h
    M Source/JavaScriptCore/assembler/X86Assembler.h
    M Source/JavaScriptCore/b3/air/AirOpcode.opcodes
    M Source/JavaScriptCore/wasm/WasmAirIRGenerator.cpp

  Log Message:
  -----------
  [SIMD] Intel support for splat
https://bugs.webkit.org/show_bug.cgi?id=248678
rdar://102927968

Reviewed by Yusuke Suzuki.

Support WASM SIMD operation splat.
https://github.com/WebAssembly/simd/blob/main/proposals/simd/SIMD.md#constant

* Source/JavaScriptCore/assembler/MacroAssemblerX86_64.h:
(JSC::MacroAssemblerX86_64::vectorSplat):
(JSC::MacroAssemblerX86_64::vectorSplatFloat32):
(JSC::MacroAssemblerX86_64::vectorSplatFloat64):
* Source/JavaScriptCore/assembler/X86Assembler.h:
(JSC::X86Assembler::pshufd):
(JSC::X86Assembler::pshufb):
(JSC::X86Assembler::pshuflw):
(JSC::X86Assembler::pshufhw):
(JSC::X86Assembler::X86InstructionFormatter::SingleInstructionBufferWriter::memoryModRM):
* Source/JavaScriptCore/b3/air/AirOpcode.opcodes:
* Source/JavaScriptCore/wasm/WasmAirIRGenerator.cpp:
(JSC::Wasm::AirIRGenerator::addSIMDSplat):

Canonical link: https://commits.webkit.org/257316@main