Shorten or normalize phase name

Author: som-snytt

compiler/src/dotty/tools/dotc/semanticdb/ExtractSemanticDB.scala

@@ -49,7 +49,12 @@ import java.nio.file.Path
  */
 class ExtractSemanticDB private (phaseMode: ExtractSemanticDB.PhaseMode) extends Phase:
 
-  override val phaseName: String = ExtractSemanticDB.phaseNamePrefix + phaseMode.toString()
+  override val phaseName: String = s"""${ExtractSemanticDB.phaseNamePrefix}${
+    import ExtractSemanticDB.PhaseMode.*
+    phaseMode match
+      case ExtractSemanticInfo => "ExtractInfo"
+      case AppendDiagnostics   => "AppendDiag"
+  }"""
 
   override val description: String = ExtractSemanticDB.description
 
@@ -129,7 +134,7 @@ object ExtractSemanticDB:
   import java.nio.file.Files
   import java.nio.file.Paths
 
-  val phaseNamePrefix: String = "extractSemanticDB"
+  val phaseNamePrefix: String = "semanticDB"
   val description: String = "extract info into .semanticdb files"
 
   enum PhaseMode:

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

@@ -49,5 +49,5 @@ class CollectEntryPoints extends MiniPhase:
   }
 
 object CollectEntryPoints:
-  val name: String = "Collect entry points"
+  val name: String = "collectEntryPoints"
   val description: String = "collect all entry points and save them in the context"

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

@@ -44,6 +44,6 @@ class SetRootTree extends Phase {
 }
 
 object SetRootTree {
-  val name: String = "SetRootTree"
+  val name: String = "setRootTree"
   val description: String = "set the rootTreeOrProvider on class symbols"
 }

sbt-bridge/test/xsbt/CompileProgressSpecification.scala

@@ -56,7 +56,7 @@ class CompileProgressSpecification {
         "sbt-deps",
         "posttyper",
         "sbt-api",
-        "SetRootTree",
+        "setRootTree",
         "pickler",
         "inlining",
         "postInlining",

tests/printing/transformed/lazy-vals-legacy.check

@@ -1,4 +1,4 @@
-[[syntax trees at end of MegaPhase{dropOuterAccessors, dropParentRefinements, checkNoSuperThis, flatten, transformWildcards, moveStatic, expandPrivate, restoreScopes, selectStatic, Collect entry points, collectSuperCalls, repeatableAnnotations}]] // tests/printing/transformed/lazy-vals-legacy.scala
+[[syntax trees at end of MegaPhase{dropOuterAccessors, dropParentRefinements, checkNoSuperThis, flatten, transformWildcards, moveStatic, expandPrivate, restoreScopes, selectStatic, collectEntryPoints, collectSuperCalls, repeatableAnnotations}]] // tests/printing/transformed/lazy-vals-legacy.scala
 package <empty> {
   @SourceFile("tests/printing/transformed/lazy-vals-legacy.scala") final module
     class A extends Object {

tests/printing/transformed/lazy-vals-new.check

@@ -1,4 +1,4 @@
-[[syntax trees at end of MegaPhase{dropOuterAccessors, dropParentRefinements, checkNoSuperThis, flatten, transformWildcards, moveStatic, expandPrivate, restoreScopes, selectStatic, Collect entry points, collectSuperCalls, repeatableAnnotations}]] // tests/printing/transformed/lazy-vals-new.scala
+[[syntax trees at end of MegaPhase{dropOuterAccessors, dropParentRefinements, checkNoSuperThis, flatten, transformWildcards, moveStatic, expandPrivate, restoreScopes, selectStatic, collectEntryPoints, collectSuperCalls, repeatableAnnotations}]] // tests/printing/transformed/lazy-vals-new.scala
 package <empty> {
   @SourceFile("tests/printing/transformed/lazy-vals-new.scala") final module
     class A extends Object {