• jyan's avatar
    PPC/S390: [Interpreter] Support compiling for baseline on return from interpreted function. · 31ac67ee
    jyan authored
    port f241a61a
    
    Original Commit Message:
        We cannot tier up from interpreted to baseline code when there is an
        activation of the function on the stack. This significantly regresses
        the performance of recursive functions since they are unlikely to get
        tiered up.
    
        This CL adds the ability for a function to be marked for baseline
        compilation when it returns. To do this we patch the
        InterpreterEntryTrampoline return address to point to
        InterpreterMarkBaselineOnReturn, which leaves the
        interpreted frame and recompile the function for
        baseline.
    
        This improves the score of EarlyBoyer by ~8x for Ignition.
    
    R=rmcilroy@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com
    BUG=v8:4280
    LOG=N
    
    Review-Url: https://codereview.chromium.org/1993343002
    Cr-Commit-Position: refs/heads/master@{#36384}
    31ac67ee
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