[Webkit-unassigned] [Bug 200782] New: Omit CheckInBounds for memcpy loops on typed arrays

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Aug 15 12:51:05 PDT 2019


https://bugs.webkit.org/show_bug.cgi?id=200782

            Bug ID: 200782
           Summary: Omit CheckInBounds for memcpy loops on typed arrays
           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: justin_michaud at apple.com

Speculate that putByVals on typed arrays are in bounds initially, and add an extra rule to integer range optimization to remove their checks when we are looping over two arrays.

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