Add system stack

internal/clashtcpip/tcpip_arm64_test.go

@@ -0,0 +1,51 @@
+package clashtcpip
+
+import (
+	"crypto/rand"
+	"testing"
+
+	"golang.org/x/sys/cpu"
+)
+
+func Test_SumNeon(t *testing.T) {
+	if !cpu.ARM64.HasASIMD {
+		t.Skipf("Neon unavailable")
+	}
+
+	bytes := make([]byte, chunkSize)
+
+	for size := 0; size <= chunkSize; size++ {
+		for count := 0; count < chunkCount; count++ {
+			_, err := rand.Reader.Read(bytes[:size])
+			if err != nil {
+				t.Skipf("Rand read failed: %v", err)
+			}
+
+			compat := SumCompat(bytes[:size])
+			neon := SumNeon(bytes[:size])
+
+			if compat != neon {
+				t.Errorf("Sum of length=%d mismatched", size)
+			}
+		}
+	}
+}
+
+func Benchmark_SumNeon(b *testing.B) {
+	if !cpu.ARM64.HasASIMD {
+		b.Skipf("Neon unavailable")
+	}
+
+	bytes := make([]byte, chunkSize)
+
+	_, err := rand.Reader.Read(bytes)
+	if err != nil {
+		b.Skipf("Rand read failed: %v", err)
+	}
+
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		SumNeon(bytes)
+	}
+}