Disable SELECTin generation

Disable SELECTin generation to compare performance

Author: odersky

compiler/src/dotty/tools/dotc/core/tasty/TreePickler.scala

@@ -384,6 +384,7 @@ class TreePickler(pickler: TastyPickler) {
             case _ =>
               val sig = tree.tpe.signature
               val isAmbiguous =
+                false &&
                 sig != Signature.NotAMethod
                 && qual.tpe.nonPrivateMember(name).match
                   case d: MultiDenotation => d.atSignature(sig).isInstanceOf[MultiDenotation]

compiler/test/dotc/pos-from-tasty.blacklist

@@ -13,3 +13,5 @@ i7087.scala
 # Nullability
 nullable.scala
 notNull.scala
+
+i9050.scala

compiler/test/dotc/pos-test-pickling.blacklist

@@ -43,3 +43,5 @@ i7757.scala
 
 # splice type tag dealiased in this reference
 i8651b.scala
+
+i9050.scala