Run all phases in first group at group end

Author: odersky

compiler/src/dotty/tools/dotc/transform/CheckReentrant.scala

@@ -45,6 +45,9 @@ class CheckReentrant extends MiniPhaseTransform { thisTransformer =>
 
   override def phaseName = "checkReentrant"
 
+  override def treeTransformPhase(implicit ctx: Context, info: TransformerInfo) =
+    groupEndPhase
+
   private[this] var shared: Set[Symbol] = Set()
   private[this] var seen: Set[ClassSymbol] = Set()
   private[this] var indent: Int = 0

compiler/src/dotty/tools/dotc/transform/FirstTransform.scala

@@ -40,6 +40,9 @@ class FirstTransform extends MiniPhaseTransform with InfoTransformer { thisTrans
 
   override def phaseName = "firstTransform"
 
+  override def treeTransformPhase(implicit ctx: Context, info: TransformerInfo) =
+    groupEndPhase
+
   private[this] var addCompanionPhases: List[NeedsCompanions] = _
 
   override def changesMembers = true // the phase adds companion objects