Function core::arch::wasm64::i16x8_extmul_high_i8x16

pub fn i16x8_extmul_high_i8x16(a: v128, b: v128) -> v128

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

lane-wise 整数扩展乘法产生两倍于输入的结果。

相当于 i16x8_mul(i16x8_extend_high_i8x16(a), i16x8_extend_high_i8x16(b))