• Manos Koukoutos's avatar
    [turbofan] Fix CsaLoadElimination for small types · f7bb9267
    Manos Koukoutos authored
    CsaLoadElimination failed to account for truncation when optimizing
    loads. This CL extends the notion of compatible Loads and Stores to
    include ({store}, {load}) pairs which both have integral representation
    and {store}'s representation is no smaller than {load}'s. In case the
    representations are not identical, it truncates and possibly
    sign-extends {store} before forwarding it to {load}.
    
    Additional change: Extend ObjectMayAlias with wasm allocating builtin
    calls.
    
    Bug: v8:11504
    Change-Id: I43f89a13793b54477a33be18aaf346462aefa8e5
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2739975Reviewed-by: 's avatarGeorg Neis <neis@chromium.org>
    Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#73340}
    f7bb9267
machine-type.h 12.4 KB