Remove the duplicate implem of hash codes for numbers.

Previously, there were two separate implementations of hash
code for boxed number classes:

* One in Statics, used by the codegen of case class methods.
* One in ScalaRunTime + BoxesRunTime, used by everything else.

This commit removes the variant implemented in ScalaRunTime +
BoxesRunTime, and always uses Statics instead. We use Statics
because the one from ScalaRunTime causes an unnecessary module
load.

The entry point ScalaRunTime.hash() is kept, as deprecated,
for bootstrapping reasons.

1 files changed, 3 insertions, 5 deletions

diff --git a/src/library/scala/runtime/ScalaRunTime.scala b/src/library/scala/runtime/ScalaRunTime.scala
index 02f39f6f5f..b31a94576a 100644
--- a/src/library/scala/runtime/ScalaRunTime.scala
+++ b/src/library/scala/runtime/ScalaRunTime.scala
@@ -158,11 +158,9 @@ object ScalaRunTime {
     }
   }
 
-  /** Implementation of `##`. */
-  def hash(x: Any): Int =
-    if (x == null) 0
-    else if (x.isInstanceOf[java.lang.Number]) BoxesRunTime.hashFromNumber(x.asInstanceOf[java.lang.Number])
-    else x.hashCode
+  /** Old implementation of `##`. */
+  @deprecated("Use scala.runtime.Statics.anyHash instead.", "2.12.0")
+  def hash(x: Any): Int = Statics.anyHash(x.asInstanceOf[Object])
 
   /** Given any Scala value, convert it to a String.
    *