Function i32x4_extend_low_i16x8

pub fn i32x4_extend_low_i16x8(a: v128) -> v128

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

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

Converts low half of the smaller lane vector to a larger lane vector, sign extended.