diff --git a/compiler/test/dotc/comptest.scala b/compiler/test/dotc/comptest.scala
index 64caa6293f63..37e51cdd056a 100644
--- a/compiler/test/dotc/comptest.scala
+++ b/compiler/test/dotc/comptest.scala
@@ -11,6 +11,7 @@ object comptest extends ParallelTesting {
   def safeMode = false
   def isInteractive = true
   def testFilter = None
+  def updateCheckFiles: Boolean = false
 
   val posDir = "./tests/pos/"
   val negDir = "./tests/neg/"
diff --git a/compiler/test/dotty/Properties.scala b/compiler/test/dotty/Properties.scala
index 56ae72a26913..8317c3acf881 100644
--- a/compiler/test/dotty/Properties.scala
+++ b/compiler/test/dotty/Properties.scala
@@ -20,6 +20,9 @@ object Properties {
    */
   val testsFilter: Option[String] = sys.props.get("dotty.tests.filter")
 
+  /** Tests should override the checkfiles with the current output */
+  val testsUpdateCheckfile: Boolean = propIsNullOrTrue("dotty.tests.updateCheckfiles")
+
   /** When set, the run tests are only compiled - not run, a warning will be
    *  issued
    */
diff --git a/compiler/test/dotty/tools/dotc/BootstrappedOnlyCompilationTests.scala b/compiler/test/dotty/tools/dotc/BootstrappedOnlyCompilationTests.scala
index 6d4c7e0bfef9..6a11c0dc548e 100644
--- a/compiler/test/dotty/tools/dotc/BootstrappedOnlyCompilationTests.scala
+++ b/compiler/test/dotty/tools/dotc/BootstrappedOnlyCompilationTests.scala
@@ -7,13 +7,8 @@ import org.junit.Assert._
 import org.junit.Assume._
 import org.junit.experimental.categories.Category
 
-import java.nio.file._
-import java.util.stream.{ Stream => JStream }
-import scala.collection.JavaConverters._
-import scala.util.matching.Regex
 import scala.concurrent.duration._
 import vulpix._
-import dotty.tools.io.JFile
 
 @Category(Array(classOf[BootstrappedOnlyTests]))
 class BootstrappedOnlyCompilationTests extends ParallelTesting {
@@ -28,6 +23,7 @@ class BootstrappedOnlyCompilationTests extends ParallelTesting {
   def safeMode = Properties.testsSafeMode
   def isInteractive = SummaryReport.isInteractive
   def testFilter = Properties.testsFilter
+  def updateCheckFiles: Boolean = Properties.testsUpdateCheckfile
 
   // Positive tests ------------------------------------------------------------
 
diff --git a/compiler/test/dotty/tools/dotc/CompilationTests.scala b/compiler/test/dotty/tools/dotc/CompilationTests.scala
index 86bfdb686d7d..9c86c8cdc818 100644
--- a/compiler/test/dotty/tools/dotc/CompilationTests.scala
+++ b/compiler/test/dotty/tools/dotc/CompilationTests.scala
@@ -27,6 +27,7 @@ class CompilationTests extends ParallelTesting {
   def safeMode = Properties.testsSafeMode
   def isInteractive = SummaryReport.isInteractive
   def testFilter = Properties.testsFilter
+  def updateCheckFiles: Boolean = Properties.testsUpdateCheckfile
 
   // Positive tests ------------------------------------------------------------
 
diff --git a/compiler/test/dotty/tools/dotc/FromTastyTests.scala b/compiler/test/dotty/tools/dotc/FromTastyTests.scala
index d11cb0a5a851..fddb97abe16b 100644
--- a/compiler/test/dotty/tools/dotc/FromTastyTests.scala
+++ b/compiler/test/dotty/tools/dotc/FromTastyTests.scala
@@ -20,7 +20,7 @@ class FromTastyTests extends ParallelTesting {
   def safeMode = Properties.testsSafeMode
   def isInteractive = SummaryReport.isInteractive
   def testFilter = Properties.testsFilter
-
+  def updateCheckFiles: Boolean = Properties.testsUpdateCheckfile
 
   @Test def posTestFromTasty: Unit = {
     // Can be reproduced with
diff --git a/compiler/test/dotty/tools/dotc/IdempotencyTests.scala b/compiler/test/dotty/tools/dotc/IdempotencyTests.scala
index 7a43700e7bce..e0e1d5ee879a 100644
--- a/compiler/test/dotty/tools/dotc/IdempotencyTests.scala
+++ b/compiler/test/dotty/tools/dotc/IdempotencyTests.scala
@@ -24,6 +24,7 @@ class IdempotencyTests extends ParallelTesting {
   def safeMode = Properties.testsSafeMode
   def isInteractive = SummaryReport.isInteractive
   def testFilter = Properties.testsFilter
+  def updateCheckFiles: Boolean = Properties.testsUpdateCheckfile
 
   @Category(Array(classOf[SlowTests]))
   @Test def idempotency: Unit = {
diff --git a/compiler/test/dotty/tools/vulpix/ParallelTesting.scala b/compiler/test/dotty/tools/vulpix/ParallelTesting.scala
index 49963b836b85..168ab6acac0e 100644
--- a/compiler/test/dotty/tools/vulpix/ParallelTesting.scala
+++ b/compiler/test/dotty/tools/vulpix/ParallelTesting.scala
@@ -46,6 +46,9 @@ trait ParallelTesting extends RunnerOrchestration { self =>
    */
   def testFilter: Option[String]
 
+  /** Tests should override the checkfiles with the current output */
+  def updateCheckFiles: Boolean
+
   /** A test source whose files or directory of files is to be compiled
    *  in a specific way defined by the `Test`
    */
@@ -505,6 +508,12 @@ trait ParallelTesting extends RunnerOrchestration { self =>
       this
     }
 
+    protected def updateCheckFile(checkFile: JFile, lines: Seq[String]): Unit = {
+      val outFile = dotty.tools.io.File(checkFile.toPath)
+      outFile.writeAll(lines.mkString("", EOL, EOL))
+      echo("Updated checkfile: " + checkFile.getPath)
+    }
+
     /** Returns all files in directory or the file if not a directory */
     private def flattenFiles(f: JFile): Array[JFile] =
       if (f.isDirectory) f.listFiles.flatMap(flattenFiles)
@@ -537,28 +546,32 @@ trait ParallelTesting extends RunnerOrchestration { self =>
                     val output = Source.fromFile(outDir.getParent + "_decompiled" + JFile.separator + outDir.getName
                       + JFile.separator + "decompiled.scala", "UTF-8").getLines().map {line =>
                       stripTrailingWhitespaces.unapplySeq(line).map(_.head).getOrElse(line)
-                    }.toList
+                    }.filter(!_.startsWith(ignoredFilePathLine)).toList
 
-                    val check: String = Source.fromFile(checkFile, "UTF-8").getLines().filter(!_.startsWith(ignoredFilePathLine))
+                    val check: String = Source.fromFile(checkFile, "UTF-8").getLines()
                       .mkString(EOL)
 
-                    if (output.filter(!_.startsWith(ignoredFilePathLine)).mkString(EOL) != check) {
+                    if (output.mkString(EOL) != check) {
                       val outFile = dotty.tools.io.File(checkFile.toPath).addExtension(".out")
-                      outFile.writeAll(output.mkString(EOL))
-                      val msg =
-                        s"""Output differed for test $name, use the following command to see the diff:
-                           |  > diff $checkFile $outFile
+                      if (updateCheckFiles) {
+                        updateCheckFile(checkFile, output)
+                      } else {
+                        outFile.writeAll(output.mkString("", EOL, ""))
+                        val msg =
+                          s"""Output differed for test $name, use the following command to see the diff:
+                             |  > diff $checkFile $outFile
                         """.stripMargin
 
-                      echo(msg)
-                      addFailureInstruction(msg)
+                        echo(msg)
+                        addFailureInstruction(msg)
 
-                      // Print build instructions to file and summary:
-                      val buildInstr = testSource.buildInstructions(0, rep.warningCount)
-                      addFailureInstruction(buildInstr)
+                        // Print build instructions to file and summary:
+                        val buildInstr = testSource.buildInstructions(0, rep.warningCount)
+                        addFailureInstruction(buildInstr)
 
-                      // Fail target:
-                      failTestSource(testSource)
+                        // Fail target:
+                        failTestSource(testSource)
+                      }
                     }
                   case _ =>
                 }
@@ -631,6 +644,9 @@ trait ParallelTesting extends RunnerOrchestration { self =>
 
             // Fail target:
             failTestSource(testSource)
+
+            if (updateCheckFiles)
+              updateCheckFile(checkFile.get, outputLines)
           }
         }
 
@@ -766,7 +782,11 @@ trait ParallelTesting extends RunnerOrchestration { self =>
         }
         def checkFileTest(sourceName: String, checkFile: JFile, actual: List[String]) = {
           val expexted = Source.fromFile(checkFile, "UTF-8").getLines().toList
-          diffMessage(sourceName, actual, expexted).foreach(fail)
+          for (msg <- diffMessage(sourceName, actual, expexted)) {
+            fail(msg)
+            if (updateCheckFiles)
+              updateCheckFile(checkFile, actual)
+          }
         }
 
         val (compilerCrashed, expectedErrors, actualErrors, hasMissingAnnotations, errorMap) = testSource match {
@@ -1371,7 +1391,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
             |Test '$title' compiled with $errors error(s) and $warnings warning(s),
             |the test can be reproduced by running:
             |
-            |  sbt "testFromTasty $file"
+            |  sbt "testCompilation --from-tasty $file"
             |
             |This tests can be disabled by adding `${file.getName}` to `compiler${JFile.separator}test${JFile.separator}dotc${JFile.separator}$runOrPos-$listName.blacklist`
             |
diff --git a/compiler/test/dotty/tools/vulpix/SummaryReport.scala b/compiler/test/dotty/tools/vulpix/SummaryReport.scala
index 6a1988e58a82..f378b3c6c049 100644
--- a/compiler/test/dotty/tools/vulpix/SummaryReport.scala
+++ b/compiler/test/dotty/tools/vulpix/SummaryReport.scala
@@ -40,6 +40,7 @@ trait SummaryReporting {
 
   /** Echoes contents of `it` to file *immediately* then flushes */
   def echoToLog(it: Iterator[String]): Unit
+
 }
 
 /** A summary report that doesn't do anything */
@@ -53,6 +54,7 @@ final class NoSummaryReport extends SummaryReporting {
   def echoSummary(): Unit = ()
   def echoToLog(msg: String): Unit = ()
   def echoToLog(it: Iterator[String]): Unit = ()
+  def updateCheckFiles: Boolean = false
 }
 
 /** A summary report that logs to both stdout and the `TestReporter.logWriter`
diff --git a/compiler/test/dotty/tools/vulpix/VulpixMetaTests.scala b/compiler/test/dotty/tools/vulpix/VulpixMetaTests.scala
index d88a398d3304..e79b983c2b83 100644
--- a/compiler/test/dotty/tools/vulpix/VulpixMetaTests.scala
+++ b/compiler/test/dotty/tools/vulpix/VulpixMetaTests.scala
@@ -4,7 +4,6 @@ package vulpix
 import org.junit.Test
 import org.junit.experimental.categories.Category
 import scala.concurrent.duration._
-import dotty.Properties
 import TestConfiguration._
 
 /** Meta tests for the Vulpix test suite. This test follows the structure of
@@ -19,6 +18,7 @@ class VulpixMetaTests extends ParallelTesting {
   def safeMode = false // Don't fork a new VM after each run test
   def isInteractive = false // Don't beautify output for interactive use.
   def testFilter = None // Run all the tests.
+  def updateCheckFiles: Boolean = false
 
   implicit val summaryReport: SummaryReporting = new SummaryReport
   implicit def testGroup: TestGroup = TestGroup("VulpixMetaTests")
diff --git a/compiler/test/dotty/tools/vulpix/VulpixUnitTests.scala b/compiler/test/dotty/tools/vulpix/VulpixUnitTests.scala
index 3aa72143bbb1..7b5738caf57c 100644
--- a/compiler/test/dotty/tools/vulpix/VulpixUnitTests.scala
+++ b/compiler/test/dotty/tools/vulpix/VulpixUnitTests.scala
@@ -21,6 +21,7 @@ class VulpixUnitTests extends ParallelTesting {
   def safeMode = sys.env.get("SAFEMODE").isDefined
   def isInteractive = !sys.env.contains("DRONE")
   def testFilter = None
+  def updateCheckFiles: Boolean = false
 
   // To fail with something else than an AssertionError
   def fail(): Unit = throw new Exception("didn't fail properly")
diff --git a/docs/docs/contributing/testing.md b/docs/docs/contributing/testing.md
index 5a33cd5ae169..67fcd8ecae1b 100644
--- a/docs/docs/contributing/testing.md
+++ b/docs/docs/contributing/testing.md
@@ -80,9 +80,27 @@ This will run both the test `./tests/pos/companions.scala` and
 `./tests/neg/companions.scala` since both of these match the given string.
 This also means that you could run `testCompilation` with no arguments to run all integration tests.
 
+When complex checkfiles must be updated, `testCompilation` can run in a mode where it overrides the checkfiles with the test outputs.
+```bash
+$ sbt
+> testCompilation --update-checkfiles
+```
+
 ### Bootstrapped-only tests
 
 To run `testCompilation` on a bootstrapped Dotty compiler, use
 `dotty-compiler-bootstrapped/testCompilation` (with the same syntax as above).
 Some tests can only be run in bootstrapped compilers; that includes all tests
 with `with-compiler` in their name.
+
+### From TASTy tests
+
+`testCompilation` has a additional mode to run tests that compile code from a `.tasty` file, decompile a `.tasty` file and recompile the decompiled tasty.
+ Modify blacklist and whitelists in `compiler/test/dotc` to enable or disable tests from `.tasty` files.
+
+ ```bash
+ $ sbt
+ > testCompilation --from-tasty
+ ```
+ 
+ This mode can be combined with `--update-checkfiles` to update the `.decompiled` files or can be run under `dotty-compiler-bootstrapped/testCompilation` to test on a bootstrapped Dotty compiler. 
\ No newline at end of file
diff --git a/project/Build.scala b/project/Build.scala
index 64cd553b7eac..85d1480b3bb0 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -85,9 +85,6 @@ object Build {
   // Run tests with filter through vulpix test suite
   val testCompilation = inputKey[Unit]("runs integration test with the supplied filter")
 
-  // Run TASTY tests with filter through vulpix test suite
-  val testFromTasty = inputKey[Unit]("runs tasty integration test with the supplied filter")
-
   // Spawns a repl with the correct classpath
   val repl = inputKey[Unit]("run the REPL with correct classpath")
 
@@ -438,15 +435,6 @@ object Build {
     case Bootstrapped => `dotty-doc-bootstrapped`
   }
 
-  def testOnlyFiltered(test: String, options: String) = Def.inputTaskDyn {
-    val args = spaceDelimited("<arg>").parsed
-    val cmd = s" $test -- $options" + {
-      if (args.nonEmpty) " -Ddotty.tests.filter=" + args.mkString(" ")
-      else ""
-    }
-    (testOnly in Test).toTask(cmd)
-  }
-
   def findLib(attList: Seq[Attributed[File]], name: String) = attList
     .map(_.data.getAbsolutePath)
     .find(_.contains(name))
@@ -547,8 +535,17 @@ object Build {
         jarOpts ::: tuning ::: agentOptions ::: ci_build
       },
 
-      testCompilation := testOnlyFiltered("dotty.tools.dotc.*CompilationTests", "--exclude-categories=dotty.SlowTests").evaluated,
-      testFromTasty := testOnlyFiltered("dotty.tools.dotc.FromTastyTests", "").evaluated,
+      testCompilation := Def.inputTaskDyn {
+        val args = spaceDelimited("<arg>").parsed
+        val updateCheckfile = args.contains("--update-checkfiles")
+        val fromTasty = args.contains("--from-tasty")
+        val args1 = if (updateCheckfile | fromTasty) args.filter(x => x != "--update-checkfiles" && x != "--from-tasty") else args
+        val test = if (fromTasty) "dotty.tools.dotc.FromTastyTests" else "dotty.tools.dotc.*CompilationTests"
+        val cmd = s" $test -- --exclude-categories=dotty.SlowTests" +
+          (if (updateCheckfile) " -Ddotty.tests.updateCheckfiles=true" else "") +
+          (if (args1.nonEmpty) " -Ddotty.tests.filter=" + args1.mkString(" ") else "")
+        (testOnly in Test).toTask(cmd)
+      }.evaluated,
 
       dotr := {
         val args: List[String] = spaceDelimited("<arg>").parsed.toList
diff --git a/tests/pos/classWithCompObj.decompiled b/tests/pos/classWithCompObj.decompiled
index 1cfb9b6b679d..7e8b55d1fea6 100644
--- a/tests/pos/classWithCompObj.decompiled
+++ b/tests/pos/classWithCompObj.decompiled
@@ -1,3 +1,2 @@
-/** Decompiled from out/posTestFromTasty/pos/classWithCompObj/Foo.class */
 class Foo()
-object Foo
\ No newline at end of file
+object Foo
diff --git a/tests/pos/conforms.decompiled b/tests/pos/conforms.decompiled
index 667ea563055a..42980919c8bd 100644
--- a/tests/pos/conforms.decompiled
+++ b/tests/pos/conforms.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/conforms/Test.class */
 object Test {
   def f[A, B](x: A)(implicit e: scala.Predef.<:<[A, B]): B = e.apply(x)
-}
\ No newline at end of file
+}
diff --git a/tests/pos/i0306.decompiled b/tests/pos/i0306.decompiled
index 5e1d7cea46d1..957bdd2c10c7 100644
--- a/tests/pos/i0306.decompiled
+++ b/tests/pos/i0306.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/i0306/bar.class */
 object bar {
   class C[T <: scala.Seq[_ >: scala.Nothing <: scala.Any]]()
   val x: scala.AnyRef = new bar.C[scala.collection.Seq[_ >: scala.Nothing <: scala.Any]]()
diff --git a/tests/pos/i1181.decompiled b/tests/pos/i1181.decompiled
index fb585ba66b9d..0af84b96234f 100644
--- a/tests/pos/i1181.decompiled
+++ b/tests/pos/i1181.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/i1181/Test.class */
 object Test {
   def foo[M[_$1]](x: M[scala.Int]): M[scala.Int] = x
   type Alias[A] = scala.Tuple2[A, A]
diff --git a/tests/pos/i1444.decompiled b/tests/pos/i1444.decompiled
index cd2b13588a4a..c1e68ba01756 100644
--- a/tests/pos/i1444.decompiled
+++ b/tests/pos/i1444.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/i1444/Test.class */
 object Test {
   class Cls(implicit x: Test.X)
   class ClsImpl() extends Test.Cls()(Test.AnX)
@@ -8,4 +7,4 @@ object Test {
   class Tr2Impl() extends Test.Tr2()(Test.AnX)
   trait X() extends java.lang.Object
   object AnX extends Test.X
-}
\ No newline at end of file
+}
diff --git a/tests/pos/i1570.decompiled b/tests/pos/i1570.decompiled
index 3f4d040e376b..cb017e9fa3e6 100644
--- a/tests/pos/i1570.decompiled
+++ b/tests/pos/i1570.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/i1570/Test.class */
 object Test {
   inline def foo(n: scala.Int): scala.Int = Test.bar(n)
   inline def bar(n: scala.Int): scala.Int = n
diff --git a/tests/pos/i2104b.decompiled b/tests/pos/i2104b.decompiled
index 009a3c87f929..74e8214b0f52 100644
--- a/tests/pos/i2104b.decompiled
+++ b/tests/pos/i2104b.decompiled
@@ -1,10 +1,8 @@
-/** Decompiled from out/posTestFromTasty/pos/i2104b/Cons.tasty */
 trait Cons[+H, +T]() extends java.lang.Object
 object Cons {
   def apply[H, T](h: H, t: T): Cons[H, T] = scala.Predef.???
   def unapply[H, T](t: Cons[H, T]): scala.Option[Pair[H, T]] = scala.Predef.???
 }
-/** Decompiled from out/posTestFromTasty/pos/i2104b/Pair.tasty */
 case class Pair[A, B](_1: A, _2: B) {
   override def hashCode(): scala.Int = {
     var acc: scala.Int = 2479866
@@ -32,10 +30,9 @@ case class Pair[A, B](_1: A, _2: B) {
   }
 }
 object Pair extends scala.AnyRef
-/** Decompiled from out/posTestFromTasty/pos/i2104b/Test.tasty */
 object Test {
   def main(args: scala.Array[scala.Predef.String]): scala.Unit = Cons.apply[scala.Option[scala.Int], scala.None.type](scala.Option.apply[scala.Int](1), scala.None) match {
     case Cons(scala.Some(i), scala.None) =>
       ()
   }
-}
\ No newline at end of file
+}
diff --git a/tests/pos/i4526-2.decompiled b/tests/pos/i4526-2.decompiled
index 93bd7a2d83c4..2190e3e2d670 100644
--- a/tests/pos/i4526-2.decompiled
+++ b/tests/pos/i4526-2.decompiled
@@ -1,2 +1 @@
-/** Decompiled from out/posTestFromTasty/pos/i4526-2/Foo.class */
 class Foo(x: scala.Int, y: scala.Int)
diff --git a/tests/pos/i4526a.decompiled b/tests/pos/i4526a.decompiled
index 7e57dfa381df..3893db5e8287 100644
--- a/tests/pos/i4526a.decompiled
+++ b/tests/pos/i4526a.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/i4526a/bar/Foo.class */
 package bar {
   class Foo() {
     protected[bar] def foo(): scala.Int = 0
diff --git a/tests/pos/i4526b.decompiled b/tests/pos/i4526b.decompiled
index a4958478ff11..2dbcb0846c9f 100644
--- a/tests/pos/i4526b.decompiled
+++ b/tests/pos/i4526b.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/i4526b/Foo.class */
 class Foo() {
   def justdoit(f: scala.Either[scala.Int, scala.Predef.String]): scala.Predef.String = f match {
     case scala.Left(i) =>
diff --git a/tests/pos/i4678.decompiled b/tests/pos/i4678.decompiled
index 99b2e0faa7f1..2ab33c74dcc2 100644
--- a/tests/pos/i4678.decompiled
+++ b/tests/pos/i4678.decompiled
@@ -1,14 +1,8 @@
-/** Decompiled from out/posTestFromTasty/pos/i4678/Foo.tasty */
 class Foo() {
   val x: scala.Int = (1: @annot1 @annot2 @annot3 @annot4 @annot5)
 }
-/** Decompiled from out/posTestFromTasty/pos/i4678/annot1.tasty */
 class annot1() extends scala.annotation.Annotation
-/** Decompiled from out/posTestFromTasty/pos/i4678/annot2.tasty */
 class annot2() extends scala.annotation.Annotation
-/** Decompiled from out/posTestFromTasty/pos/i4678/annot3.tasty */
 class annot3() extends scala.annotation.Annotation
-/** Decompiled from out/posTestFromTasty/pos/i4678/annot4.tasty */
 class annot4() extends scala.annotation.Annotation
-/** Decompiled from out/posTestFromTasty/pos/i4678/annot5.tasty */
-class annot5() extends scala.annotation.Annotation
\ No newline at end of file
+class annot5() extends scala.annotation.Annotation
diff --git a/tests/pos/i566.decompiled b/tests/pos/i566.decompiled
index 60c719c5d4d7..8ec06555e1aa 100644
--- a/tests/pos/i566.decompiled
+++ b/tests/pos/i566.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/i566/Test.class */
 class Test() {
   type T = scala.Predef.String
   type U
diff --git a/tests/pos/lambda.decompiled b/tests/pos/lambda.decompiled
index fc1fcf67c6d6..2242d1df2366 100644
--- a/tests/pos/lambda.decompiled
+++ b/tests/pos/lambda.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/lambda/foo/Foo.class */
 package foo {
   class Foo() {
     ((x: scala.Int) => 2)
diff --git a/tests/pos/methodTypes.decompiled b/tests/pos/methodTypes.decompiled
index 5b1032d93114..a6fa344b4913 100644
--- a/tests/pos/methodTypes.decompiled
+++ b/tests/pos/methodTypes.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/methodTypes/Foo.class */
 class Foo() {
   val x: scala.Int = 1
   def y: scala.Int = 2
diff --git a/tests/pos/selftypes.decompiled b/tests/pos/selftypes.decompiled
index 4280791ff2fb..e9a2f3cea7cf 100644
--- a/tests/pos/selftypes.decompiled
+++ b/tests/pos/selftypes.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/selftypes/selftypes.class */
 object selftypes {
   trait A() extends java.lang.Object { self: selftypes.AB =>
     type AA = scala.List[this.BX]
diff --git a/tests/pos/simple-repeated-args.decompiled b/tests/pos/simple-repeated-args.decompiled
index 40edc2e34e48..e44f1e74a86b 100644
--- a/tests/pos/simple-repeated-args.decompiled
+++ b/tests/pos/simple-repeated-args.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simple-repeated-args/Foo.class */
 class Foo() {
   scala.List.apply[scala.Any](1, "2", '3')
   scala.Array.apply(1)
diff --git a/tests/pos/simpleAnnot.decompiled b/tests/pos/simpleAnnot.decompiled
index e540d3fd03f0..9e2fad75f946 100644
--- a/tests/pos/simpleAnnot.decompiled
+++ b/tests/pos/simpleAnnot.decompiled
@@ -1,9 +1,7 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleAnnot/Foo.tasty */
 class Foo() {
   @annot type A = scala.Int
   @annot val a: scala.Int = scala.Predef.???
   val b: scala.Int @annot = scala.Predef.???
   def c(x: scala.Int): scala.Int = (x: @annot)
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleAnnot/annot.tasty */
-class annot() extends scala.annotation.Annotation
\ No newline at end of file
+class annot() extends scala.annotation.Annotation
diff --git a/tests/pos/simpleCaseClass-1.decompiled b/tests/pos/simpleCaseClass-1.decompiled
index 94b9afd1225d..02af82592f03 100644
--- a/tests/pos/simpleCaseClass-1.decompiled
+++ b/tests/pos/simpleCaseClass-1.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleCaseClass-1/A.tasty */
 case class A() {
   override def hashCode(): scala.Int = 1914112431
   override def equals(x$0: scala.Any): scala.Boolean = A.this.eq(x$0.asInstanceOf[java.lang.Object]).||(x$0 match {
@@ -16,4 +15,4 @@ case class A() {
       throw new java.lang.IndexOutOfBoundsException(n.toString())
   }
 }
-object A extends scala.Function0[A]
\ No newline at end of file
+object A extends scala.Function0[A]
diff --git a/tests/pos/simpleCaseClass-2.decompiled b/tests/pos/simpleCaseClass-2.decompiled
index 9e0c75a8542e..08b83cb95297 100644
--- a/tests/pos/simpleCaseClass-2.decompiled
+++ b/tests/pos/simpleCaseClass-2.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleCaseClass-2/A.tasty */
 case class A(x: scala.Int) {
   override def hashCode(): scala.Int = {
     var acc: scala.Int = 65
@@ -22,4 +21,4 @@ case class A(x: scala.Int) {
       throw new java.lang.IndexOutOfBoundsException(n.toString())
   }
 }
-object A extends scala.Function1[scala.Int, A]
\ No newline at end of file
+object A extends scala.Function1[scala.Int, A]
diff --git a/tests/pos/simpleCaseClass-3.decompiled b/tests/pos/simpleCaseClass-3.decompiled
index 6ece597b3836..a1745d0b9f84 100644
--- a/tests/pos/simpleCaseClass-3.decompiled
+++ b/tests/pos/simpleCaseClass-3.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleCaseClass-3/A.tasty */
 case class A[T](x: T) {
   override def hashCode(): scala.Int = {
     var acc: scala.Int = 65
@@ -22,4 +21,4 @@ case class A[T](x: T) {
       throw new java.lang.IndexOutOfBoundsException(n.toString())
   }
 }
-object A extends scala.AnyRef
\ No newline at end of file
+object A extends scala.AnyRef
diff --git a/tests/pos/simpleCaseObject.decompiled b/tests/pos/simpleCaseObject.decompiled
index 22dd52baaa65..0b0f9dc24d01 100644
--- a/tests/pos/simpleCaseObject.decompiled
+++ b/tests/pos/simpleCaseObject.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleCaseObject/foo/Foo.tasty */
 package foo {
   case object Foo {
     override def hashCode(): scala.Int = 1045991777
@@ -11,4 +10,4 @@ package foo {
         throw new java.lang.IndexOutOfBoundsException(n.toString())
     }
   }
-}
\ No newline at end of file
+}
diff --git a/tests/pos/simpleClass-2.decompiled b/tests/pos/simpleClass-2.decompiled
index b4fe479d7478..0c1687a8557e 100644
--- a/tests/pos/simpleClass-2.decompiled
+++ b/tests/pos/simpleClass-2.decompiled
@@ -1,8 +1,6 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleClass-2/foo/A.tasty */
 package foo {
   class A() extends foo.B
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleClass-2/foo/B.tasty */
 package foo {
   class B()
-}
\ No newline at end of file
+}
diff --git a/tests/pos/simpleClass-3.decompiled b/tests/pos/simpleClass-3.decompiled
index 13e8f84f52cf..e66adc16c902 100644
--- a/tests/pos/simpleClass-3.decompiled
+++ b/tests/pos/simpleClass-3.decompiled
@@ -1,6 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleClass-3/A.class */
 class A() extends B with C
-/** Decompiled from out/posTestFromTasty/pos/simpleClass-3/B.class */
 trait B() extends java.lang.Object
-/** Decompiled from out/posTestFromTasty/pos/simpleClass-3/C.class */
-trait C() extends java.lang.Object
\ No newline at end of file
+trait C() extends java.lang.Object
diff --git a/tests/pos/simpleClass.decompiled b/tests/pos/simpleClass.decompiled
index 1480d1e37a19..89372cde3b95 100644
--- a/tests/pos/simpleClass.decompiled
+++ b/tests/pos/simpleClass.decompiled
@@ -1,8 +1,6 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleClass/foo/A.tasty */
 package foo {
   class A()
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleClass/foo/B.tasty */
 package foo {
   class B() extends foo.A
-}
\ No newline at end of file
+}
diff --git a/tests/pos/simpleConstructor.decompiled b/tests/pos/simpleConstructor.decompiled
index 26bded3333b0..c90a8ef747a5 100644
--- a/tests/pos/simpleConstructor.decompiled
+++ b/tests/pos/simpleConstructor.decompiled
@@ -1,4 +1,2 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleConstructor/A.class */
 class A(a: scala.Int, val b: scala.Int, var c: scala.Int)
-/** Decompiled from out/posTestFromTasty/pos/simpleConstructor/B.class */
 class B(protected val x: scala.Int, protected[B] val y: scala.Int, private[B] val z: scala.Int)
diff --git a/tests/pos/simpleDoWhile.decompiled b/tests/pos/simpleDoWhile.decompiled
index 90fbe2fb3d41..5832ad51ee66 100644
--- a/tests/pos/simpleDoWhile.decompiled
+++ b/tests/pos/simpleDoWhile.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleDoWhile/Foo.class */
 class Foo() {
   def foo: scala.Unit = {
     var i: scala.Int = 1
diff --git a/tests/pos/simpleExtractors-1.decompiled b/tests/pos/simpleExtractors-1.decompiled
index dc23b0998dc3..fe11840b562a 100644
--- a/tests/pos/simpleExtractors-1.decompiled
+++ b/tests/pos/simpleExtractors-1.decompiled
@@ -1,20 +1,15 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleExtractors-1/Bar.class */
 object Bar {
   def unapply(arg: scala.Any): scala.Option[scala.Any] = scala.Some.apply[scala.Any](arg)
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleExtractors-1/BarSeq.class */
 object BarSeq {
   def unapplySeq(arg: scala.Any): scala.Option[scala.Seq[scala.Any]] = scala.Some.apply[collection.immutable.List[scala.Any]](scala.List.apply[scala.Any](arg))
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleExtractors-1/Baz.class */
 object Baz {
   def unapply[T](arg: T): scala.Option[T] = scala.Some.apply[T](arg)
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleExtractors-1/BazSeq.class */
 object BazSeq {
   def unapplySeq[T](arg: T): scala.Option[scala.Seq[T]] = scala.Some.apply[collection.immutable.List[T]](scala.List.apply[T](arg))
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleExtractors-1/Foo.class */
 class Foo() {
   def bar(x: scala.Any): scala.Unit = x match {
     case Bar(a) =>
diff --git a/tests/pos/simpleExtractors-2.decompiled b/tests/pos/simpleExtractors-2.decompiled
index ab13e08134a6..a1ae9ab59e89 100644
--- a/tests/pos/simpleExtractors-2.decompiled
+++ b/tests/pos/simpleExtractors-2.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleExtractors-2/Foo.class */
 class Foo() {
   def bar(x: scala.Any): scala.Unit = x match {
     case scala.Some(scala.Some(i: scala.Int)) =>
diff --git a/tests/pos/simpleInline.decompiled b/tests/pos/simpleInline.decompiled
index f0b400adb998..9e2332d08fd2 100644
--- a/tests/pos/simpleInline.decompiled
+++ b/tests/pos/simpleInline.decompiled
@@ -1,5 +1,4 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleInline/Foo.class */
 class Foo() {
   inline def foo: scala.Int = (9: scala.Int)
   def bar: scala.Int = (9: scala.Int)
-}
\ No newline at end of file
+}
diff --git a/tests/pos/simpleMatchCase.decompiled b/tests/pos/simpleMatchCase.decompiled
index 265134cc19e4..438549c3b8af 100644
--- a/tests/pos/simpleMatchCase.decompiled
+++ b/tests/pos/simpleMatchCase.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleMatchCase/Foo.class */
 class Foo() {
   def foo: scala.Unit = "c" match {
     case x =>
diff --git a/tests/pos/simpleMatchRef.decompiled b/tests/pos/simpleMatchRef.decompiled
index ffbd69186c53..4c9de151d293 100644
--- a/tests/pos/simpleMatchRef.decompiled
+++ b/tests/pos/simpleMatchRef.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleMatchRef/Foo.class */
 class Foo() {
   val X: scala.Int = scala.Predef.???
   def foo(x: scala.Any): scala.Unit = x match {
@@ -8,5 +7,4 @@ class Foo() {
       scala.Predef.println("b")
   }
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleMatchRef/Y.class */
 object Y
diff --git a/tests/pos/simpleRefinement.decompiled b/tests/pos/simpleRefinement.decompiled
index 72cb06c43840..118eac58a535 100644
--- a/tests/pos/simpleRefinement.decompiled
+++ b/tests/pos/simpleRefinement.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleRefinement/Bar.class */
 trait Bar() extends java.lang.Object {
   type S
   type T
@@ -10,7 +9,6 @@ trait Bar() extends java.lang.Object {
   def w[T]: scala.Any
   def w2[T](a: scala.Null)(b: scala.Null): scala.Any
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleRefinement/Foo.class */
 class Foo() {
   val bar: Bar {
     type S >: scala.Int <: scala.Int
diff --git a/tests/pos/simpleSetter.decompiled b/tests/pos/simpleSetter.decompiled
index e089ec70d28f..a46d68aaf439 100644
--- a/tests/pos/simpleSetter.decompiled
+++ b/tests/pos/simpleSetter.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleSetter/Test.class */
 object Test {
   var name: scala.Predef.String = "foo"
   Test.name = Test.name.+("123")
diff --git a/tests/pos/simpleSingleton.decompiled b/tests/pos/simpleSingleton.decompiled
index 1c9ee9a2e22e..dee824af39d1 100644
--- a/tests/pos/simpleSingleton.decompiled
+++ b/tests/pos/simpleSingleton.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleSingleton/Foo.class */
 class Foo() {
   def foo(x: scala.Int): scala.Unit = {
     val a: x.type = x
diff --git a/tests/pos/simpleSuper.decompiled b/tests/pos/simpleSuper.decompiled
index 2ccda001213d..4b50ea391d07 100644
--- a/tests/pos/simpleSuper.decompiled
+++ b/tests/pos/simpleSuper.decompiled
@@ -1,18 +1,15 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleSuper/foo/A.tasty */
 package foo {
   class A() {
     def foo: scala.Int = 1
   }
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleSuper/foo/B.tasty */
 package foo {
   trait B() extends java.lang.Object {
     def foo: scala.Int = 2
   }
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleSuper/foo/C.tasty */
 package foo {
   class C() extends foo.A with foo.B {
     override def foo: scala.Int = super.foo.+(super[B].foo)
   }
-}
\ No newline at end of file
+}
diff --git a/tests/pos/simpleTry.decompiled b/tests/pos/simpleTry.decompiled
index 0b03797346c9..be21c783bb43 100644
--- a/tests/pos/simpleTry.decompiled
+++ b/tests/pos/simpleTry.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleTry/Foo.class */
 class Foo() {
   try 3 catch {
     case e: scala.Throwable =>
diff --git a/tests/pos/simpleTypeSelect.decompiled b/tests/pos/simpleTypeSelect.decompiled
index 4619340bb43b..b45bfd991992 100644
--- a/tests/pos/simpleTypeSelect.decompiled
+++ b/tests/pos/simpleTypeSelect.decompiled
@@ -1,8 +1,6 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleTypeSelect/Foo.class */
 trait Foo() extends java.lang.Object {
   type Bar
 }
-/** Decompiled from out/posTestFromTasty/pos/simpleTypeSelect/Test.class */
 object Test {
   val x: Foo#Bar = scala.Predef.???
 }
diff --git a/tests/pos/simpleWhile.decompiled b/tests/pos/simpleWhile.decompiled
index 12c319714704..f16b7efa1ebd 100644
--- a/tests/pos/simpleWhile.decompiled
+++ b/tests/pos/simpleWhile.decompiled
@@ -1,7 +1,6 @@
-/** Decompiled from out/posTestFromTasty/pos/simpleWhile/Foo.class */
 class Foo() {
   def foo: scala.Unit = {
     var i: scala.Int = 1
     while (i.!=(0)) i = 0
   }
-}
\ No newline at end of file
+}
diff --git a/tests/pos/t0905.decompiled b/tests/pos/t0905.decompiled
index dba33a22a1ba..bab9c41c52ec 100644
--- a/tests/pos/t0905.decompiled
+++ b/tests/pos/t0905.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/t0905/Test.class */
 object Test {
   trait A[T]() extends java.lang.Object
   def f(implicit p: Test.A[_ >: scala.Nothing <: scala.Any]): scala.Null = null
diff --git a/tests/pos/t116.decompiled b/tests/pos/t116.decompiled
index 339cb645155f..65089dcda98e 100644
--- a/tests/pos/t116.decompiled
+++ b/tests/pos/t116.decompiled
@@ -1,8 +1,7 @@
-/** Decompiled from out/posTestFromTasty/pos/t116/C.tasty */
 class C() {
   def this(x: scala.Int) = {
     this()
     class D() extends C
     ()
   }
-}
\ No newline at end of file
+}
diff --git a/tests/pos/t3869.decompiled b/tests/pos/t3869.decompiled
index 873660e2f03f..9050bcdfb62e 100644
--- a/tests/pos/t3869.decompiled
+++ b/tests/pos/t3869.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/posTestFromTasty/pos/t3869/Test.class */
 object Test {
   def f: scala.Unit = try return () finally while (true) ()
   def main(args: scala.Array[scala.Predef.String]): scala.Unit = Test.f
diff --git a/tests/pos/t6225b.decompiled b/tests/pos/t6225b.decompiled
index d1abda2b16f0..b086a631c622 100644
--- a/tests/pos/t6225b.decompiled
+++ b/tests/pos/t6225b.decompiled
@@ -1,10 +1,8 @@
-/** Decompiled from out/posTestFromTasty/pos/t6225b/library/x/X.tasty */
 package library.x {
   class X() {
     class Foo()
   }
 }
-/** Decompiled from out/posTestFromTasty/pos/t6225b/library/y/package.tasty */
 package library {
   package object y extends library.x.X
-}
\ No newline at end of file
+}
diff --git a/tests/pos/t704.decompiled b/tests/pos/t704.decompiled
index f1cd2fce613a..6003562eac60 100644
--- a/tests/pos/t704.decompiled
+++ b/tests/pos/t704.decompiled
@@ -1,6 +1,4 @@
-/** Decompiled from out/posTestFromTasty/pos/t704/C.class */
 class C() extends E
-/** Decompiled from out/posTestFromTasty/pos/t704/D.class */
 trait D() extends java.lang.Object {
   val x: java.lang.String = "xxxx should appear twice"
   object xxxx {
@@ -8,7 +6,6 @@ trait D() extends java.lang.Object {
   }
   def get_xxxx: scala.AnyRef = D.this.xxxx
 }
-/** Decompiled from out/posTestFromTasty/pos/t704/E.class */
 trait E() extends java.lang.Object with D {
   def f(): scala.Unit = {
     val y: java.lang.String = "yyyy should appear twice"
@@ -20,7 +17,6 @@ trait E() extends java.lang.Object with D {
     ()
   }
 }
-/** Decompiled from out/posTestFromTasty/pos/t704/Go.class */
 object Go extends D {
   def main(args: scala.Array[scala.Predef.String]): scala.Unit = {
     new C().f()
diff --git a/tests/run/classof-object.decompiled b/tests/run/classof-object.decompiled
index cd10ecdba5f7..9a5a1f455fa1 100644
--- a/tests/run/classof-object.decompiled
+++ b/tests/run/classof-object.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/runTestFromTasty/run/classof-object/Test.tasty */
 object Test {
   def main(args: scala.Array[scala.Predef.String]): scala.Unit = if (scala.Predef.classOf[Test.type].==(Test.getClass()).unary_!) dotty.DottyPredef.assertFail() else ()
 }
diff --git a/tests/run/literals.decompiled b/tests/run/literals.decompiled
index a82862e56607..6cacc583dddb 100644
--- a/tests/run/literals.decompiled
+++ b/tests/run/literals.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/runTestFromTasty/run/literals/Test.tasty */
 object Test {
   def αρετη: java.lang.String = "alpha rho epsilon tau eta"
   case class GGG(i: scala.Int) {
@@ -95,4 +94,4 @@ object Test {
     val ggg: scala.Int = Test.GGG.apply(1).αα(Test.GGG.apply(2))
     Test.check_success[scala.Int]("ggg == 3", ggg, 3)
   }
-}
\ No newline at end of file
+}
diff --git a/tests/run/simpleClass.decompiled b/tests/run/simpleClass.decompiled
index 2e60f888ffb7..c5c1aeb6cff0 100644
--- a/tests/run/simpleClass.decompiled
+++ b/tests/run/simpleClass.decompiled
@@ -1,15 +1,12 @@
-/** Decompiled from out/runTestFromTasty/run/simpleClass/Test.tasty */
 object Test {
   def main(args: scala.Array[scala.Predef.String]): scala.Unit = {
     scala.Predef.println(new foo.A().getClass().getName())
     scala.Predef.println(new foo.B().getClass().getName())
   }
 }
-/** Decompiled from out/runTestFromTasty/run/simpleClass/foo/A.tasty */
 package foo {
   class A()
 }
-/** Decompiled from out/runTestFromTasty/run/simpleClass/foo/B.tasty */
 package foo {
   class B() extends foo.A
-}
\ No newline at end of file
+}
diff --git a/tests/run/t4300.decompiled b/tests/run/t4300.decompiled
index 473386df7e61..9cb4932bcc7f 100644
--- a/tests/run/t4300.decompiled
+++ b/tests/run/t4300.decompiled
@@ -1,8 +1,6 @@
-/** Decompiled from out/runTestFromTasty/run/t4300/A.tasty */
 trait A() extends java.lang.Object {
   def f(): scala.Unit = scala.Predef.println("A")
 }
-/** Decompiled from out/runTestFromTasty/run/t4300/B.tasty */
 class B() extends A {
   def b(): scala.Unit = super[A].f()
   trait C() extends java.lang.Object {
@@ -12,7 +10,6 @@ class B() extends A {
   def h(): scala.Unit = scala.Predef.intWrapper(0).until(1).foreach[scala.Unit](((i: scala.Int) => B.super[A].f()))
   override def f(): scala.Unit = scala.Predef.println("B")
 }
-/** Decompiled from out/runTestFromTasty/run/t4300/Test.tasty */
 object Test {
   def main(args: scala.Array[scala.Predef.String]): scala.Unit = {
     val b: B = new B()
diff --git a/tests/run/t8100.decompiled b/tests/run/t8100.decompiled
index 98a9f15b651b..eb529cfeb106 100644
--- a/tests/run/t8100.decompiled
+++ b/tests/run/t8100.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/runTestFromTasty/run/t8100/Test.class */
 object Test {
   import scala.util.{Try}
   def main(args: scala.Array[scala.Predef.String]): scala.Unit = {
diff --git a/tests/run/t889.decompiled b/tests/run/t889.decompiled
index 312c4195b932..f2a863bd13ea 100644
--- a/tests/run/t889.decompiled
+++ b/tests/run/t889.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/runTestFromTasty/run/t889/Test.tasty */
 object Test extends dotty.runtime.LegacyApp {
   val a: collection.immutable.List[java.lang.String] = scala.List.apply[java.lang.String]("a")
   Test.a match {
diff --git a/tests/run/valueclasses-pavlov.decompiled b/tests/run/valueclasses-pavlov.decompiled
index 9f8453e1303c..47919c57f946 100644
--- a/tests/run/valueclasses-pavlov.decompiled
+++ b/tests/run/valueclasses-pavlov.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/runTestFromTasty/run/valueclasses-pavlov/Box1.tasty */
 final class Box1(val value: scala.Predef.String) extends scala.AnyVal {
   override def hashCode(): scala.Int = Box1.this.value.hashCode()
   override def equals(x$0: scala.Any): scala.Boolean = x$0 match {
@@ -9,7 +8,6 @@ final class Box1(val value: scala.Predef.String) extends scala.AnyVal {
   }
 }
 object Box1 extends scala.AnyRef
-/** Decompiled from out/runTestFromTasty/run/valueclasses-pavlov/Box2.tasty */
 final class Box2(val value: scala.Predef.String) extends scala.AnyVal with Foo {
   override def hashCode(): scala.Int = Box2.this.value.hashCode()
   override def equals(x$0: scala.Any): scala.Boolean = x$0 match {
@@ -22,19 +20,16 @@ final class Box2(val value: scala.Predef.String) extends scala.AnyVal with Foo {
   def box2(x: Box2): scala.Predef.String = "box2: ok"
 }
 object Box2 extends scala.AnyRef
-/** Decompiled from out/runTestFromTasty/run/valueclasses-pavlov/C.tasty */
 class C(x: scala.Predef.String) {
   def this() = {
     this("")
     ()
   }
 }
-/** Decompiled from out/runTestFromTasty/run/valueclasses-pavlov/Foo.tasty */
 trait Foo() extends scala.Any {
   def box1(x: Box1): scala.Predef.String
   def box2(x: Box2): scala.Predef.String
 }
-/** Decompiled from out/runTestFromTasty/run/valueclasses-pavlov/Test.tasty */
 object Test {
   def main(args: scala.Array[scala.Predef.String]): scala.Unit = {
     val b1: Box1 = new Box1("")
@@ -43,4 +38,4 @@ object Test {
     scala.Predef.println(f.box1(b1))
     scala.Predef.println(f.box2(b2))
   }
-}
\ No newline at end of file
+}
diff --git a/tests/run/virtpatmat_alts.decompiled b/tests/run/virtpatmat_alts.decompiled
index 97502e290fc9..f969bab0819e 100644
--- a/tests/run/virtpatmat_alts.decompiled
+++ b/tests/run/virtpatmat_alts.decompiled
@@ -1,4 +1,3 @@
-/** Decompiled from out/runTestFromTasty/run/virtpatmat_alts/Test.tasty */
 object Test extends dotty.runtime.LegacyApp {
   scala.Tuple2.apply[scala.Boolean, scala.Boolean](true, true) match {
     case (scala.Tuple2(true, true) | scala.Tuple2(false, false)) =>
@@ -14,4 +13,4 @@ object Test extends dotty.runtime.LegacyApp {
     case scala.Nil =>
       scala.Predef.println("FAILED")
   }
-}
\ No newline at end of file
+}