{"ast_node_type":"other","tokens":[{"end":2,"kind":"keyword","start":0,"text":"//"}]}
//
// See https://community.arm.com/arm-community-blogs/b/infrastructure-solutions-blog/posts/porting-x86-vector-bitmask-optimizations-to-arm-neon
// The mask is a 64-bit integer, where each 4-bit corresponds to a u8 in the