• Thibaud Michaud's avatar
    [regalloc] Avoid duplicate moves for slot constraint · f6a3ef56
    Thibaud Michaud authored
    We potentially emitted the same gap move multiple times to satisfy slot
    constraint of live ranges defined by a constant. Avoid this by keeping
    track of already spilled ranges for a given instruction.
    
    This is not expected to cause any regression because this case is rare.
    If it does, a better approach to save allocations would be to re-use the
    same vector by storing it somewhere that survives the function calls,
    e.g. in the ConstraintBuilder.
    
    Drive-by: Remove unused functions.
    
    R=sigurds@chromium.org
    CC=nicohartmann@chromium.org
    
    Bug: chromium:1204748
    Change-Id: I75a838a8b27775ecdeddb4c60cf72c56d5f1c2a4
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2871462Reviewed-by: 's avatarSigurd Schneider <sigurds@chromium.org>
    Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#74375}
    f6a3ef56
register-allocator.h 57.6 KB