extend_low_i16x8_u: Wasm SIMD conversion instruction

The extend_low_i16x8_u SIMD conversion instruction converts lanes 0–3 of an unsigned v128 i16x8 value interpretation into an i32x4 value interpretation.

Try it

(module
  (import "console" "log" (func $log (param i32)))
  (func $main
    v128.const i16x8 200 210 220 230 240 250 260 270

    i32x4.extend_low_i16x8_u
    i32x4.extract_lane 0
    call $log ;; log the result
  )
  (start $main)
)

WebAssembly.instantiateStreaming(fetch("{%wasm-url%}"), { console });

Syntax

i32x4.extend_low_i16x8_u

i32x4.extend_low_i16x8_u

The i32x4.extend_low_i16x8_u instruction.

Type

[input] -> [output]

input

The input v128 i16x8 value interpretation.

output

The output v128 i32x4 value interpretation.

Binary encoding

Specifications

• WebAssembly Core Specification