[Webkit-unassigned] [Bug 165469] New: x86 popcnt: try out "fast popcnt"

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=165469

            Bug ID: 165469
           Summary: x86 popcnt: try out "fast popcnt"
    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: jfbastien at apple.com
                CC: fpizlo at apple.com, ggaren at apple.com,
                    jfbastien at apple.com, keith_miller at apple.com,
                    mark.lam at apple.com, msaboff at apple.com,
                    sbarati at apple.com

Th internet claims we can get faster popcnt on x86:
http://0x80.pl/articles/sse-popcount.html

Keith just added the instruction for wasm, let's try it out this trick sometime.

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