• Leszek Swirski's avatar
    [maglev] Use known_node_aspects for representation changes · f685fac3
    Leszek Swirski authored
    Since we have the NodeInfo map in known_node_aspects now anyway, use it
    for representation changes instead of the current interpreter frame
    value swapping mechanism.
    
    We originally didn't want a map for representations, but if we have one
    anyway for node types, it makes sense to merge the two mechanisms.
    
    This also allows us to get rid of the "register same as accumulator"
    hack for binops, which was trying to avoid redundant representation
    changes, since the redundancy is removed by the node aspects mechanism
    automatically. It's kept for CheckedInternalizedString, since that isn't
    a representation change within our framework (maybe it should be?).
    
    Bug: v8:7700
    Change-Id: I92491307f83d3b63fc7a210f6b8754e45d3531a7
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3905182Reviewed-by: 's avatarJakob Linke <jgruber@chromium.org>
    Commit-Queue: Leszek Swirski <leszeks@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#83317}
    f685fac3
maglev-graph-builder.cc 120 KB