• Leszek Swirski's avatar
    [compiler] Introduce ReusableUnoptimizedCompileState · b3e1eb0c
    Leszek Swirski authored
    Introduce a ReusableUnoptimizedCompileState class, passed to ParseInfo,
    which stores a couple of pointers and most importantly the Zone and
    AstValueFactory of the parse. This allows the Zone and AstValueFactory
    to be reused across multiple parses, rather than re-initialising
    per-Parse.
    
    With this, we can amend the LazyCompileDispatcher to initialise one
    LocalIsolate, Zone and AstValueFactory per background thread loop,
    rather than one per compile task, which allows us to reduce per-task
    costs and re-use the AstValueFactory's string table and previous String
    internalizations.
    
    Change-Id: Ia0e29c4e31fbe29af57674ebb10916865d38b2ce
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3313106Reviewed-by: 's avatarToon Verwaest <verwaest@chromium.org>
    Commit-Queue: Leszek Swirski <leszeks@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#78289}
    b3e1eb0c
test-preparser.cc 37.8 KB