• Raymond Toy's avatar
    Refine features to include sse4 for popcnt · 285d1d96
    Raymond Toy authored
    popcnt is part of sse4, not sse3/ssse3, so add feature detection for
    sse4 to enable use of this instruciton.
    sse4 and ppcnt was first available in the Nehalem architecture, Nov
    2008 in the first gen of Core i7 and i5 processors.  The oldest
    machines I have access to date from 2011.
    Also remove :ssse3 because we don't currently define or use any ssse3
    Add a bit of documentation about popcnt.
    Setup CI to build with a bootstrap file to get these instructions.
arith.lisp 60.5 KB