Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 8528edac562f64740d601d211444f330c4f96c37
      
https://github.com/WebKit/WebKit/commit/8528edac562f64740d601d211444f330c4f96c37
  Author: Yusuke Suzuki <[email protected]>
  Date:   2026-03-19 (Thu, 19 Mar 2026)

  Changed paths:
    M JSTests/wasm/stress/inline-simd-function.js
    M Source/JavaScriptCore/assembler/MacroAssemblerX86_64.h
    M Source/JavaScriptCore/assembler/X86Assembler.h
    M Source/JavaScriptCore/b3/B3LowerToAir.cpp
    M Source/JavaScriptCore/b3/B3ReduceStrength.cpp
    M Source/JavaScriptCore/b3/air/AirOpcode.opcodes
    M Source/JavaScriptCore/b3/testb3_1.cpp
    M Source/JavaScriptCore/b3/testb3_7.cpp

  Log Message:
  -----------
  [JSC] Use wasm SIMD optimizations in x64 too
rdar://172715980
https://bugs.webkit.org/show_bug.cgi?id=310072

Reviewed by Justin Michaud.

Add x64 AVX SIMD shuffle specializations. We unlock some of ARM64 SIMD
optimizations for x64 when the pattern is supported in AVX.

Tests: Source/JavaScriptCore/b3/testb3_1.cpp
       Source/JavaScriptCore/b3/testb3_7.cpp

* JSTests/wasm/stress/inline-simd-function.js:
* Source/JavaScriptCore/assembler/MacroAssemblerX86_64.h:
(JSC::MacroAssemblerX86_64::vectorDupElement):
(JSC::MacroAssemblerX86_64::vectorZipLower):
(JSC::MacroAssemblerX86_64::vectorZipHigher):
(JSC::MacroAssemblerX86_64::vectorUnzipEven):
(JSC::MacroAssemblerX86_64::vectorUnzipOdd):
(JSC::MacroAssemblerX86_64::vectorExtractPair):
(JSC::MacroAssemblerX86_64::vectorReverse):
* Source/JavaScriptCore/assembler/X86Assembler.h:
(JSC::X86Assembler::vpunpckhqdq_rrr):
(JSC::X86Assembler::vpalignr_i8rrr):
* Source/JavaScriptCore/b3/B3LowerToAir.cpp:
* Source/JavaScriptCore/b3/B3ReduceStrength.cpp:
* Source/JavaScriptCore/b3/air/AirOpcode.opcodes:
* Source/JavaScriptCore/b3/testb3_1.cpp:
(run):
* Source/JavaScriptCore/b3/testb3_7.cpp:
(testVectorReverse):
(testBinarySwizzlePattern):
(testUnarySwizzlePattern):
(testVectorSwizzleToUnzipEven):
(testVectorSwizzleBinaryToUnzipOdd):
(testVectorExtractPair):
(testVectorSwizzleBinaryToEXT):
(testVectorSwizzleUnaryToEXT):
(testVectorCanonicalSameInputFolding):
(testVectorSwizzleToDupElement):
(testVectorSwizzleComposition):
(testVectorSwizzleUnaryComposition):
(testVectorSwizzleCompositionMultiUse):

Canonical link: https://commits.webkit.org/309571@main



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