[Webkit-unassigned] [Bug 227013] New: Move setting of scratch buffer active lengths to the runtime functions.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=227013

            Bug ID: 227013
           Summary: Move setting of scratch buffer active lengths to the
                    runtime functions.
           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: mark.lam at apple.com

We previously emit JIT'ed code to set and unset the ScratchBuffer active length around calls into C++ runtime functions.  This was needed because the runtime functions may allow GC to run, and GC needs to be able to scan the values stored in the ScratchBuffer.

Instead of emitting JIT code to set and unset the active length, we can do it in the runtime function.

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