• verwaest's avatar
    Turn Scope::locals_ into a ThreadedList · 4fa2ebcb
    verwaest authored
    This turns the ZoneList with minimum 6 words overhead into a linked list through variables, using 2 words for the empty list. Additionally the average number of pointers per entry goes down to the optimal 1 per variable that's in a list.
    
    This does introduce 1 pointer unnecessary overhead for dynamic variables. If that becomes a problem we could distinguish between variables in lists and variables not in lists. We can distinguish them at construction-time.
    
    BUG=v8:5209
    
    Review-Url: https://codereview.chromium.org/2475433002
    Cr-Commit-Position: refs/heads/master@{#40714}
    4fa2ebcb
scopes.h 32.9 KB