Revert toArrayList for primitive arrays back to trivial implementation.

Use newly introduced Int.MAX_VALUE in JS.
Inline mapCapacityForValues function.
Precalculate capacity of linked hash set being created with toMutableSet function.

libraries/stdlib/src/generated/_Sets.kt

@@ -264,7 +264,7 @@ public fun <T> Iterable<T>.subtract(other: Iterable<T>): Set<T> {
  * Returns a mutable set containing all distinct elements from the given collection.
  */
 public fun <T> Array<out T>.toMutableSet(): MutableSet<T> {
-    val set = LinkedHashSet<T>(size())
+    val set = LinkedHashSet<T>(mapCapacity(size()))
     for (item in this) set.add(item)
     return set
 }
@@ -273,7 +273,7 @@ public fun <T> Array<out T>.toMutableSet(): MutableSet<T> {
  * Returns a mutable set containing all distinct elements from the given collection.
  */
 public fun BooleanArray.toMutableSet(): MutableSet<Boolean> {
-    val set = LinkedHashSet<Boolean>(size())
+    val set = LinkedHashSet<Boolean>(mapCapacity(size()))
     for (item in this) set.add(item)
     return set
 }
@@ -282,7 +282,7 @@ public fun BooleanArray.toMutableSet(): MutableSet<Boolean> {
  * Returns a mutable set containing all distinct elements from the given collection.
  */
 public fun ByteArray.toMutableSet(): MutableSet<Byte> {
-    val set = LinkedHashSet<Byte>(size())
+    val set = LinkedHashSet<Byte>(mapCapacity(size()))
     for (item in this) set.add(item)
     return set
 }
@@ -291,7 +291,7 @@ public fun ByteArray.toMutableSet(): MutableSet<Byte> {
  * Returns a mutable set containing all distinct elements from the given collection.
  */
 public fun CharArray.toMutableSet(): MutableSet<Char> {
-    val set = LinkedHashSet<Char>(size())
+    val set = LinkedHashSet<Char>(mapCapacity(size()))
     for (item in this) set.add(item)
     return set
 }
@@ -300,7 +300,7 @@ public fun CharArray.toMutableSet(): MutableSet<Char> {
  * Returns a mutable set containing all distinct elements from the given collection.
  */
 public fun DoubleArray.toMutableSet(): MutableSet<Double> {
-    val set = LinkedHashSet<Double>(size())
+    val set = LinkedHashSet<Double>(mapCapacity(size()))
     for (item in this) set.add(item)
     return set
 }
@@ -309,7 +309,7 @@ public fun DoubleArray.toMutableSet(): MutableSet<Double> {
  * Returns a mutable set containing all distinct elements from the given collection.
  */
 public fun FloatArray.toMutableSet(): MutableSet<Float> {
-    val set = LinkedHashSet<Float>(size())
+    val set = LinkedHashSet<Float>(mapCapacity(size()))
     for (item in this) set.add(item)
     return set
 }
@@ -318,7 +318,7 @@ public fun FloatArray.toMutableSet(): MutableSet<Float> {
  * Returns a mutable set containing all distinct elements from the given collection.
  */
 public fun IntArray.toMutableSet(): MutableSet<Int> {
-    val set = LinkedHashSet<Int>(size())
+    val set = LinkedHashSet<Int>(mapCapacity(size()))
     for (item in this) set.add(item)
     return set
 }
@@ -327,7 +327,7 @@ public fun IntArray.toMutableSet(): MutableSet<Int> {
  * Returns a mutable set containing all distinct elements from the given collection.
  */
 public fun LongArray.toMutableSet(): MutableSet<Long> {
-    val set = LinkedHashSet<Long>(size())
+    val set = LinkedHashSet<Long>(mapCapacity(size()))
     for (item in this) set.add(item)
     return set
 }
@@ -336,7 +336,7 @@ public fun LongArray.toMutableSet(): MutableSet<Long> {
  * Returns a mutable set containing all distinct elements from the given collection.
  */
 public fun ShortArray.toMutableSet(): MutableSet<Short> {
-    val set = LinkedHashSet<Short>(size())
+    val set = LinkedHashSet<Short>(mapCapacity(size()))
     for (item in this) set.add(item)
     return set
 }

libraries/stdlib/src/generated/_Snapshots.kt

@@ -21,56 +21,72 @@ public fun <T> Array<out T>.toArrayList(): ArrayList<T> {
  * Returns an ArrayList of all elements
  */
 public fun BooleanArray.toArrayList(): ArrayList<Boolean> {
-    return this.asList().toArrayList()
+    val list = ArrayList<Boolean>(size())
+    for (item in this) list.add(item)
+    return list
 }
 
 /**
  * Returns an ArrayList of all elements
  */
 public fun ByteArray.toArrayList(): ArrayList<Byte> {
-    return this.asList().toArrayList()
+    val list = ArrayList<Byte>(size())
+    for (item in this) list.add(item)
+    return list
 }
 
 /**
  * Returns an ArrayList of all elements
  */
 public fun CharArray.toArrayList(): ArrayList<Char> {
-    return this.asList().toArrayList()
+    val list = ArrayList<Char>(size())
+    for (item in this) list.add(item)
+    return list
 }
 
 /**
  * Returns an ArrayList of all elements
  */
 public fun DoubleArray.toArrayList(): ArrayList<Double> {
-    return this.asList().toArrayList()
+    val list = ArrayList<Double>(size())
+    for (item in this) list.add(item)
+    return list
 }
 
 /**
  * Returns an ArrayList of all elements
  */
 public fun FloatArray.toArrayList(): ArrayList<Float> {
-    return this.asList().toArrayList()
+    val list = ArrayList<Float>(size())
+    for (item in this) list.add(item)
+    return list
 }
 
 /**
  * Returns an ArrayList of all elements
  */
 public fun IntArray.toArrayList(): ArrayList<Int> {
-    return this.asList().toArrayList()
+    val list = ArrayList<Int>(size())
+    for (item in this) list.add(item)
+    return list
 }
 
 /**
  * Returns an ArrayList of all elements
  */
 public fun LongArray.toArrayList(): ArrayList<Long> {
-    return this.asList().toArrayList()
+    val list = ArrayList<Long>(size())
+    for (item in this) list.add(item)
+    return list
 }
 
 /**
  * Returns an ArrayList of all elements
  */
 public fun ShortArray.toArrayList(): ArrayList<Short> {
-    return this.asList().toArrayList()
+    val list = ArrayList<Short>(size())
+    for (item in this) list.add(item)
+    return list
 }
 
 /**
@@ -84,6 +100,8 @@ public fun <T> Collection<T>.toArrayList(): ArrayList<T> {
  * Returns an ArrayList of all elements
  */
 public fun <T> Iterable<T>.toArrayList(): ArrayList<T> {
+    if (this is Collection<T>)
+        return this.toArrayList()
     return toCollection(ArrayList<T>())
 }