[nomaster] Revert "SI-5017 Poor performance of :+ operator on Arrays"

This reverts commit 02b2da63409af6a28824cbb74d00d0ec04518c8d.

3 files changed, 0 insertions, 29 deletions

diff --git a/src/library/scala/collection/mutable/ArrayOps.scala b/src/library/scala/collection/mutable/ArrayOps.scala
index 6b778b26f5..bb938a7aeb 100644
--- a/src/library/scala/collection/mutable/ArrayOps.scala
+++ b/src/library/scala/collection/mutable/ArrayOps.scala
@@ -52,20 +52,6 @@ trait ArrayOps[T] extends Any with ArrayLike[T, Array[T]] with CustomParalleliza
       super.toArray[U]
   }
 
-  def :+[B >: T: scala.reflect.ClassTag](elem: B): Array[B] = {
-    val result = Array.ofDim[B](repr.length + 1)
-    Array.copy(repr, 0, result, 0, repr.length)
-    result(repr.length) = elem
-    result
-  }
-
-  def +:[B >: T: scala.reflect.ClassTag](elem: B): Array[B] = {
-    val result = Array.ofDim[B](repr.length + 1)
-    result(0) = elem
-    Array.copy(repr, 0, result, 1, repr.length)
-    result
-  }
-
   override def par = ParArray.handoff(repr)
 
   /** Flattens a two-dimensional array by concatenating all its rows
diff --git a/test/files/run/array-addition.check b/test/files/run/array-addition.check
deleted file mode 100644
index 7bfbd9c711..0000000000
--- a/test/files/run/array-addition.check
+++ /dev/null
@@ -1,4 +0,0 @@
-Array(1, 2, 3, 4)
-Array(1, 2, 3, 4)
-Array(1)
-Array(1)
diff --git a/test/files/run/array-addition.scala b/test/files/run/array-addition.scala
deleted file mode 100644
index 8def48e85c..0000000000
--- a/test/files/run/array-addition.scala
+++ /dev/null
@@ -1,11 +0,0 @@
-object Test {
-  def prettyPrintArray(x: Array[_]) = println("Array(" + x.mkString(", ") + ")")
-
-  def main(args: Array[String]): Unit = {
-    prettyPrintArray(Array(1,2,3) :+ 4)
-    prettyPrintArray(1 +: Array(2,3,4))
-    prettyPrintArray(Array() :+ 1)
-    prettyPrintArray(1 +: Array())
-  }
-}
-