GopherJS vs Wasm (2)

main.go

package main

import (
        "time"
)

func array() []float32 {
        return make([]float32, 16)
}

func heavyTask() float32 {
        arr := array()

        result := float32(0.0)

        for i := 0; i < 10000000; i++ {
                u0, v0, u1, v1 := float32(0.0), float32(0.0), float32(1.0), float32(1.0)
                arr[0] = u0
                arr[1] = v0
                arr[2] = u1
                arr[3] = u1

                arr[4] = u1
                arr[5] = v0
                arr[6] = u0
                arr[7] = u1

                arr[8] = u0
                arr[9] = v1
                arr[10] = u1
                arr[11] = u0

                arr[12] = u1
                arr[13] = v1
                arr[14] = u0
                arr[15] = u0

                result += arr[i % 16]
        }
        return result
}

func main() {
        t1 := time.Now().UnixNano()
        x := heavyTask()
        t2 := time.Now().UnixNano()
        println("result:", x)
        println("time [ns]:", t2 - t1)
}

main.js

function array() {
  return new Float32Array(16);
}

function heavyTask() {
  const arr = array();
  result = 0.0;
  for (let i = 0; i < 10000000; i++) {
    const u0 = 0.0;
    const v0 = 0.0;
    const u1 = 1.0;
    const v1 = 1.0;

    arr[0] = u0
    arr[1] = v0
    arr[2] = u1
    arr[3] = u1

    arr[4] = u1
    arr[5] = v0
    arr[6] = u0
    arr[7] = u1

    arr[8] = u0
    arr[9] = v1
    arr[10] = u1
    arr[11] = u0

    arr[12] = u1
    arr[13] = v1
    arr[14] = u0
    arr[15] = u0

    result += arr[i % 16]
  }
  return result;
}

function main() {
  const t1 = process.hrtime();
  const x = heavyTask();
  const diff = process.hrtime(t1);
  console.log('result:', x);
  console.log('time [ns]:', diff[0] * 1e9 + diff[1]);
}

result.txt

Go
result: +5.000000e+006
time [ns]: 47944663

Wasm (Go)
result: +5.000000e+006
time [ns]: 228000000

GopherJS
result: 5000000
time [ns]: 169000000

JavaScript
result: 5000000
time [ns]: 77574471

test.sh

echo 'Go'
go run main.go
echo

echo 'Wasm (Go)'
GOOS=js GOARCH=wasm ~/go-code/bin/go build -o test.wasm .
./go_js_wasm_exec test.wasm
echo

echo 'GopherJS'
gopherjs build -o test.js .
node test.js
echo

echo 'JavaScript'
node main.js
echo