Create detailed benchmarks about tuples

Author: Antoine Brunner

bench-run/outputs/concat.csv

@@ -4,7 +4,7 @@ import org.openjdk.jmh.annotations._
 import scala.runtime.DynamicTuple
 
 @State(Scope.Thread)
-class ApplyBenchmarks {
+class Apply {
   @Param(Array("1 0"))
   var sizeAndIndex: String = _
   var tuple: NonEmptyTuple = _
@@ -17,7 +17,7 @@ class ApplyBenchmarks {
     tuple = "elem" *: ()
 
     for (i <- 1 until size)
-      tuple = "string" *: tuple
+      tuple = "elem" *: tuple
   }
 
   @Benchmark

bench-run/src/main/scala/tuples/Apply.scala

@@ -0,0 +1,47 @@
+package dotty.tools.benchmarks.tuples
+
+import org.openjdk.jmh.annotations._
+import scala.runtime.DynamicTuple
+
+@State(Scope.Thread)
+class ArrayOps {
+  @Param(Array("0"))
+  var size: Int = _
+  var tuple: Tuple = _
+  var array: Array[Object] = _
+  var iarray: IArray[Object] = _
+
+  @Setup
+  def setup(): Unit = {
+    tuple = ()
+
+    for (i <- 1 to size)
+      tuple = "elem" *: tuple
+
+    array = Array.fill(size)("elem")
+    iarray = IArray.fill(size)("elem")
+  }
+
+  @Benchmark
+  def baseline(): Unit = {}
+
+  @Benchmark
+  def toArray(): Array[Object] = {
+    DynamicTuple.dynamicToArray(tuple)
+  }
+
+  @Benchmark
+  def toIArray(): IArray[Object] = {
+    DynamicTuple.dynamicToIArray(tuple)
+  }
+
+  @Benchmark
+  def fromArray(): Tuple = {
+    DynamicTuple.dynamicFromArray(array)
+  }
+
+  @Benchmark
+  def fromIArray(): Tuple = {
+    DynamicTuple.dynamicFromIArray(iarray)
+  }
+}

bench-run/src/main/scala/tuples/ArrayOps.scala

@@ -25,7 +25,7 @@ class Concat {
     val size1 = sizes.split(' ')(0).toInt
     val size2 = sizes.split(' ')(1).toInt
     tuple1 = tupleOfSize(size1)
-    tuple1 = tupleOfSize(size2)
+    tuple2 = tupleOfSize(size2)
     array1 = Array.fill(size1)("elem")
     array2 = Array.fill(size2)("elem")
   }

bench-run/src/main/scala/tuples/Concat.scala

@@ -0,0 +1,41 @@
+package dotty.tools.benchmarks.tuples
+
+import org.openjdk.jmh.annotations._
+import scala.runtime.DynamicTuple
+
+@State(Scope.Thread)
+class Cons {
+  @Param(Array("0"))
+  var size: Int = _
+  var tuple: Tuple = _
+  var array: Array[Object] = _
+
+  @Setup
+  def setup(): Unit = {
+    tuple = ()
+
+    for (i <- 1 to size)
+      tuple = "elem" *: tuple
+
+    array = Array.fill(size)("elem")
+  }
+
+  @Benchmark
+  def baseline(): Unit = {}
+
+  @Benchmark
+  def normal(): Tuple = {
+    "elem" *: tuple
+  }
+
+  @Benchmark
+  def inlined(): Tuple = {
+    DynamicTuple.dynamicCons("elem", tuple)
+  }
+
+  // This part is here to measure the performance of dong a cons on arrays directly
+  @Benchmark
+  def arrayCons(): Array[Object] = {
+    DynamicTuple.cons$Array("elem", array)
+  }
+}