diff --git a/src/runtime/memmove_test.go b/src/runtime/memmove_test.go
index 7c9d2ada45..88873208eb 100644
--- a/src/runtime/memmove_test.go
+++ b/src/runtime/memmove_test.go
@@ -411,6 +411,63 @@ func BenchmarkGoMemclr(b *testing.B) {
 	})
 }
 
+func BenchmarkMemclrRange(b *testing.B) {
+	type RunData struct {
+		data []int
+	}
+
+	benchSizes := []RunData{
+		RunData{[]int{1043, 1078, 1894, 1582, 1044, 1165, 1467, 1100, 1919, 1562, 1932, 1645,
+			1412, 1038, 1576, 1200, 1029, 1336, 1095, 1494, 1350, 1025, 1502, 1548, 1316, 1296,
+			1868, 1639, 1546, 1626, 1642, 1308, 1726, 1665, 1678, 1187, 1515, 1598, 1353, 1237,
+			1977, 1452, 2012, 1914, 1514, 1136, 1975, 1618, 1536, 1695, 1600, 1733, 1392, 1099,
+			1358, 1996, 1224, 1783, 1197, 1838, 1460, 1556, 1554, 2020}}, // 1kb-2kb
+		RunData{[]int{3964, 5139, 6573, 7775, 6553, 2413, 3466, 5394, 2469, 7336, 7091, 6745,
+			4028, 5643, 6164, 3475, 4138, 6908, 7559, 3335, 5660, 4122, 3945, 2082, 7564, 6584,
+			5111, 2288, 6789, 2797, 4928, 7986, 5163, 5447, 2999, 4968, 3174, 3202, 7908, 8137,
+			4735, 6161, 4646, 7592, 3083, 5329, 3687, 2754, 3599, 7231, 6455, 2549, 8063, 2189,
+			7121, 5048, 4277, 6626, 6306, 2815, 7473, 3963, 7549, 7255}}, // 2kb-8kb
+		RunData{[]int{16304, 15936, 15760, 4736, 9136, 11184, 10160, 5952, 14560, 15744,
+			6624, 5872, 13088, 14656, 14192, 10304, 4112, 10384, 9344, 4496, 11392, 7024,
+			5200, 10064, 14784, 5808, 13504, 10480, 8512, 4896, 13264, 5600}}, // 4kb-16kb
+		RunData{[]int{164576, 233136, 220224, 183280, 214112, 217248, 228560, 201728}}, // 128kb-256kb
+	}
+
+	for _, t := range benchSizes {
+		total := 0
+		minLen := 0
+		maxLen := 0
+
+		for _, clrLen := range t.data {
+			if clrLen > maxLen {
+				maxLen = clrLen
+			}
+			if clrLen < minLen || minLen == 0 {
+				minLen = clrLen
+			}
+			total += clrLen
+		}
+		buffer := make([]byte, maxLen)
+
+		text := ""
+		if minLen >= (1 << 20) {
+			text = fmt.Sprint(minLen>>20, "M ", (maxLen+(1<<20-1))>>20, "M")
+		} else if minLen >= (1 << 10) {
+			text = fmt.Sprint(minLen>>10, "K ", (maxLen+(1<<10-1))>>10, "K")
+		} else {
+			text = fmt.Sprint(minLen, " ", maxLen)
+		}
+		b.Run(text, func(b *testing.B) {
+			b.SetBytes(int64(total))
+			for i := 0; i < b.N; i++ {
+				for _, clrLen := range t.data {
+					MemclrBytes(buffer[:clrLen])
+				}
+			}
+		})
+	}
+}
+
 func BenchmarkClearFat8(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		var x [8 / 4]uint32