distinct benchmark types

the -t flag now supports set-point, set-rect, and set-string

cmd/tile38-benchmark/main.go

@@ -177,7 +177,7 @@ func main() {
 					return redbench.AppendCommand(buf, "PING")
 				},
 			)
-		case "SET":
+		case "SET", "SET-POINT", "SET-RECT", "SET-STRING":
 			if redis {
 				redbench.Bench("SET", addr, fillOpts(), prepFn,
 					func(buf []byte) []byte {
@@ -186,6 +186,8 @@ func main() {
 				)
 			} else {
 				var i int64
+				switch strings.ToUpper(strings.TrimSpace(test)) {
+				case "SET", "SET-POINT":
 					redbench.Bench("SET (point)", addr, fillOpts(), prepFn,
 						func(buf []byte) []byte {
 							i := atomic.AddInt64(&i, 1)
@@ -196,6 +198,9 @@ func main() {
 							)
 						},
 					)
+				}
+				switch strings.ToUpper(strings.TrimSpace(test)) {
+				case "SET", "SET-RECT":
 					redbench.Bench("SET (rect)", addr, fillOpts(), prepFn,
 						func(buf []byte) []byte {
 							i := atomic.AddInt64(&i, 1)
@@ -208,6 +213,9 @@ func main() {
 							)
 						},
 					)
+				}
+				switch strings.ToUpper(strings.TrimSpace(test)) {
+				case "SET", "SET-STRING":
 					redbench.Bench("SET (string)", addr, fillOpts(), prepFn,
 						func(buf []byte) []byte {
 							i := atomic.AddInt64(&i, 1)
@@ -215,6 +223,7 @@ func main() {
 						},
 					)
 				}
+			}
 		case "GET":
 			if redis {
 				redbench.Bench("GET", addr, fillOpts(), prepFn,