I was able to reduce it to 0xe9 bytes and I'm getting:

clang-802.0.42 -O3 -march=native on a Core i7-4770HQ @ 2.20GHz:

    branchless: 490.666725 MB/s, 0 errors
    0xe9 small: 380.000045 MB/s, 0 errors
    Hoehrmann:  337.333374 MB/s, 0 errors

With gcc 4.8.4 -O3 -march=native on a Xeon E5-1650v3 @ 3.50GHz:

    branchless: 436.000052 MB/s, 0 errors
    0xe9 small: 405.333382 MB/s, 0 errors
    Hoehrmann:  412.000049 MB/s, 0 errors

https://pastebin.com/j7T3bDwR