• Junliang Yan's avatar
    PPC/s390: interpreter: make interpreted frames distinguishable in the native stack · c7393ac8
    Junliang Yan authored
    Port ada64b58
    
    Original Commit Message:
    
        Before Turbofan/Ignition it was possible to use external profilers to
        sample running V8/Node.js processes and generate reports/FlameGraphs
        from that. It's still possible to do so, but non-optimized JavaScript
        functions appear in the stack as InterpreterEntryTrampoline. This commit
        adds a runtime flag which makes interpreted frames visible on the
        process' native stack as distinguishable functions, making the sampled
        data gathered by external profilers such as Linux perf and DTrace more
        useful.
    
    R=matheus@sthima.com.br, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com
    BUG=
    LOG=N
    
    Change-Id: I0416b53c53248a5624061d0155712a3e2396c725
    Reviewed-on: https://chromium-review.googlesource.com/1008045Reviewed-by: 's avatarJoran Siu <joransiu@ca.ibm.com>
    Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
    Cr-Commit-Position: refs/heads/master@{#52551}
    c7393ac8
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