• Yu Yin's avatar
    [mips][lite] Allocate feedback vectors lazily · 82622c52
    Yu Yin authored
    Port: 7629afdb https://crrev.com/c/1520719
    
    Original Commit Message:
    
        Allocate feedback vectors lazily when the function's interrupt budget has
        reached a specified threshold. This cl introduces a new field in the
        ClosureFeedbackCellArray to track the interrupt budget for allocating
        feedback vectors. Using the interrupt budget on the bytecode array could
        cause problems when there are closures across native contexts and we may
        delay allocating feedback vectors in one of them causing unexpected
        performance cliffs. In the long term we may want to remove interrupt budget
        from bytecode array and use context specific budget for tiering up decisions
        as well.
    
    Change-Id: Icddceec22df3dad7861a30f0190397db130db10d
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1669116Reviewed-by: 's avatarMythri Alle <mythria@chromium.org>
    Commit-Queue: Yu Yin <xwafish@gmail.com>
    Cr-Commit-Position: refs/heads/master@{#62301}
    82622c52
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