Function i8x16_bitmask

pub fn i8x16_bitmask(a: v128) -> u16

🔬This is a nightly-only experimental API. (simd_wasm64 #90599)

Available on target_family="wasm" and target feature simd128 and WebAssembly only.

Extracts the high bit for each lane in a and produce a scalar mask with all bits concatenated.