[Webkit-unassigned] [Bug 177844] New: Add support for using Probe Based DFG OSR Exit behind a runtime flag.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Oct 3 15:50:39 PDT 2017


https://bugs.webkit.org/show_bug.cgi?id=177844

            Bug ID: 177844
           Summary: Add support for using Probe Based DFG OSR Exit behind
                    a runtime flag.
           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

This is based on the code originally posted in https://bugs.webkit.org/show_bug.cgi?id=175144 with some optimizations and bug fixes added.  The probe based DFG OSR Exit is only enabled if Options::useProbeBaseOSRExit() is true.  We're landing this behind an option switch to make it easier to tune performance using the probe based OSR exit.

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