• Clemens Backes's avatar
    [wasm][debug] Fix tier down during streaming compilation · 3cc981cb
    Clemens Backes authored
    If the debugger is enabled while streaming compilation is happening, we
    won't correctly tier down to Liftoff. This is because during streaming
    compilation, we always compile for no debugging. Fixing that is a bit
    tricky, since when the debugger is enabled, functions can either already
    have finished compiling, or they are currently being compiled, or their
    wire bytes are not received yet.
    Instead of handling this correctly while streaming compilation is
    running, we just recompile the whole module with Liftoff after streaming
    compilation finished.
    
    For testing this, we use the existing tests for async compilation, and
    enable --wasm-test-streaming, which compiles via the streaming decoder
    even in the async compilation case.
    
    R=thibaudm@chromium.org
    
    Bug: v8:10531
    Change-Id: I0177248a9ad2e90f83faee965d6746de05423f1f
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2207133Reviewed-by: 's avatarThibaud Michaud <thibaudm@chromium.org>
    Commit-Queue: Clemens Backes <clemensb@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#67882}
    3cc981cb
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