Update tests

Author: odersky

compiler/test/dotty/tools/repl/ShadowingTests.scala

@@ -122,7 +122,7 @@ class ShadowingTests extends ReplTest(options = ShadowingTests.options):
          |val y: String = foo
          |
          |scala> if (true) x else y
-         |val res0: Matchable = 42
+         |val res0: Int | String = 42
          |""".stripMargin.linesIterator.toList
     )
 

tests/semanticdb/metac.expect

@@ -1786,7 +1786,7 @@ Symbols:
 example/InstrumentTyper# => class InstrumentTyper extends Object { self: AnyRef & InstrumentTyper => +5 decls }
 example/InstrumentTyper#AnnotatedType# => type AnnotatedType  = Int @param
 example/InstrumentTyper#`<init>`(). => primary ctor <init> (): InstrumentTyper
-example/InstrumentTyper#all(). => method all => List[Matchable]
+example/InstrumentTyper#all(). => method all => List[Float | Double | List[Nothing] | Boolean | Unit | Char | String | LinkOption | Int | Long | Class[Option[Int]]]
 example/InstrumentTyper#clazzOf. => final val method clazzOf Option[Int]
 example/InstrumentTyper#singletonType(). => method singletonType (param x: Predef.type): Nothing
 example/InstrumentTyper#singletonType().(x) => param x: Predef.type
@@ -1847,7 +1847,7 @@ Occurrences:
 [24:37..24:40): Int -> scala/Int#
 
 Synthetics:
-[8:12..8:16):List => *.apply[Matchable]
+[8:12..8:16):List => *.apply[Float | Double | List[Nothing] | Boolean | Unit | Char | String | LinkOption | Int | Long | Class[Option[Int]]]
 [20:4..20:8):List => *.apply[Nothing]
 
 expect/InventedNames.scala