Reproduced on openresty_1.11.2.3/luajit/bin/luajit with https://github.com/luapower/blake2/blob/master/blake2.lua
blake2.lua:125: unexpected symbol near 'pragma' at line 14
Does not reproduce on openresty/luajit2 tag v2.1-20170405 without the -msse4.2 compilation flags or latest commit excluded.
compiled on Intel(R) Xeon(R) CPU E3-1225 V2 @ 3.20GHz (supports SSE4.2)