[Webkit-unassigned] [Bug 165363] New: We should have SSE4 detection in the X86 MacroAssembler.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=165363

            Bug ID: 165363
           Summary: We should have SSE4 detection in the X86
                    MacroAssembler.
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: keith_miller at apple.com

There are some instructions in SSE4 that would be nice to use. For example the Popcnt instruction is used by Wasm.

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