• Arnaud Robin's avatar
    [wasm] Add priorities for function compilation · 6ad8193b
    Arnaud Robin authored
    In order to improve our tiering strategy, it is a good idea to start
    by tiering up functions that will be used the most, as this is done in
    most JavaScript engines.
    
    To decide which function requires tiering, we use as a basic strategy
    to define its compilation priority to 'func_size * number_of_calls',
    this roughly approximates the time we spend in the function.
    
    To handle prioritization, it seemed that using  a concurrent
    priority queue similar to BigUnits was causing concurrencies issues.
    I then decided to use different priority queues for each worker thread.
    
    R=clemensb@chromium.org
    CC=thibaudm@chromium.org
    
    Bug: v8:10728
    Change-Id: I6f314468549000b2a9b51d3d470f04a0cb997879
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2367859
    Commit-Queue: Arnaud Robin <arobin@google.com>
    Reviewed-by: 's avatarClemens Backes <clemensb@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#69585}
    6ad8193b
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