diff --git a/compiler/test/dotty/tools/dotc/FromTastyTests.scala b/compiler/test/dotty/tools/dotc/FromTastyTests.scala
index c3afd9eb8e88..d08789d72a92 100644
--- a/compiler/test/dotty/tools/dotc/FromTastyTests.scala
+++ b/compiler/test/dotty/tools/dotc/FromTastyTests.scala
@@ -22,39 +22,38 @@ class FromTastyTests extends ParallelTesting {
 
   @Test def posTestFromTasty: Unit = {
     implicit val testGroup: TestGroup = TestGroup("posTestFromTasty")
-    val (step1, step2) = {
-      // compileTastyInDir("../tests/pos", defaultOptions) + // FIXME
-      // compileTasty("../tests/pos/t115.scala", defaultOptions) +
-      // compileTasty("../tests/pos/t2127.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i1570.scala", defaultOptions) +
-      // compileTasty("../tests/pos/t1279a.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i3129.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i2250.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i966.scala", defaultOptions) +
-      // compileTasty("../tests/pos/t0049.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i0306.scala", defaultOptions) +
-      // compileTasty("../tests/pos/t0055.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i2397.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i1365.scala", defaultOptions) +
-      // compileTasty("../tests/pos/t1957.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i1756.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i3130d.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i1990a.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i996.scala", defaultOptions) +
-      // compileTasty("../tests/pos/companions.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i1812.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i2944.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i2468.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i2300.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i1990.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i1812b.scala", defaultOptions) +
-      // compileTasty("../tests/pos/t2405.scala", defaultOptions) +
-      // compileTasty("../tests/pos/supercalls.scala", defaultOptions) +
-      // compileTasty("../tests/pos/hklub0.scala", defaultOptions) +
-      // compileTasty("../tests/pos/i3130a.scala", defaultOptions) +
-      compileTastyInDir("../tests/pos-from-tasty", defaultOptions) +
-      compileTasty("../tests/pos-from-tasty/simpleClass.scala", defaultOptions)
-    }
+    val (step1, step2) = compileTastyInDir("../tests/pos", defaultOptions,
+      blacklist = Set(
+        "Meter.scala",
+        "NoCyclicReference.scala",
+        "depfuntype.scala",
+        "hklub0.scala",
+        "i0306.scala",
+        "i1365.scala",
+        "i1795.scala",
+        "i2345.scala",
+        "i2888.scala",
+        "i2944.scala",
+        "i2980.scala",
+        "i3000.scala",
+        "i536.scala",
+        "i974.scala",
+        "liftable.scala",
+        "quoteTest.scala",
+        "quoted.scala",
+        "stagedInterpreter.scala",
+        "superacc.scala",
+        "t0231.scala",
+        "t1203a.scala",
+        "t2260.scala",
+        "t3612.scala", // Test never finishes
+        "t3800.scala",
+        "t4579.scala",
+        "t8023.scala",
+        "tcpoly_ticket2096.scala",
+        "t247.scala",
+      )
+    )
     step1.checkCompile() // Compile all files to generate the class files with tasty
     step2.checkCompile() // Compile from tasty
     (step1 + step2).delete()
@@ -62,36 +61,36 @@ class FromTastyTests extends ParallelTesting {
 
   @Test def runTestFromTasty: Unit = {
     implicit val testGroup: TestGroup = TestGroup("runTestFromTasty")
-    val (step1, step2) = {
-      // compileTastyInDir("../tests/run", defaultOptions) + // FIXME
-      // compileTasty("../tests/run/t3613.scala", defaultOptions) +
-      // compileTasty("../tests/run/i1569.scala", defaultOptions) +
-      // compileTasty("../tests/run/i2337.scala", defaultOptions) +
-      // compileTasty("../tests/run/t2127.scala", defaultOptions) +
-      // compileTasty("../tests/run/scala2trait-lazyval.scala", defaultOptions) +
-      // compileTasty("../tests/run/t6666a.scala", defaultOptions) +
-      // compileTasty("../tests/run/t3452f.scala", defaultOptions) +
-      // compileTasty("../tests/run/t6957.scala", defaultOptions) +
-      // compileTasty("../tests/run/inlinedAssign.scala", defaultOptions) +
-      // compileTasty("../tests/run/bridges.scala", defaultOptions) +
-      // compileTasty("../tests/run/t8002.scala", defaultOptions) +
-      // compileTasty("../tests/run/t6506.scala", defaultOptions) +
-      // compileTasty("../tests/run/enum-approx.scala", defaultOptions) +
-      // compileTasty("../tests/run/i2337b.scala", defaultOptions) +
-      // compileTasty("../tests/run/array-addition.scala", defaultOptions) +
-      // compileTasty("../tests/run/t1909c.scala", defaultOptions) +
-      // compileTasty("../tests/run/i2163.scala", defaultOptions) +
-      // compileTasty("../tests/run/t8395.scala", defaultOptions) +
-      // compileTasty("../tests/run/view-iterator-stream.scala", defaultOptions) +
-      // compileTasty("../tests/run/Course-2002-13.scala", defaultOptions) +
-      // compileTasty("../tests/run/NestedClasses.scala", defaultOptions) +
-      // compileTasty("../tests/run/inlineForeach.scala", defaultOptions) +
-      // compileTasty("../tests/run/i1990b.scala", defaultOptions) +
-      // compileTasty("../tests/run/t3048.scala", defaultOptions) +
-      // compileTasty("../tests/run/patmat-bind-typed.scala", defaultOptions) +
-      compileTastyInDir("../tests/run-from-tasty", defaultOptions) +
-      compileTasty("../tests/run/t493.scala", defaultOptions)
-    }
+    val (step1, step2) = compileTastyInDir("../tests/run", defaultOptions,
+       blacklist = Set(
+         "Course-2002-13.scala",
+         "NestedClasses.scala",
+         "bridges.scala",
+         "eff-dependent.scala",
+         "enum-approx.scala",
+         "i2337.scala",
+         "i2337b.scala",
+         "inlineForeach.scala",
+         "patmat-bind-typed.scala",
+         "phantom-decls-1.scala",
+         "phantom-decls-3.scala",
+         "phantom-decls-5.scala",
+         "phantom-hk-1.scala",
+         "phantom-hk-2.scala",
+         "phantom-in-value-class.scala",
+         "phantom-methods-3.scala",
+         "phantom-methods-4.scala",
+         "phantom-poly-1.scala",
+         "phantom-poly-2.scala",
+         "phantom-poly-3.scala",
+         "phantom-poly-4.scala",
+         "scala2trait-lazyval.scala",
+         "t3452f.scala",
+         "t493.scala",
+         "t8395.scala",
+         "t3613.scala",
+       )
+    )
     step1.checkCompile() // Compile all files to generate the class files with tasty
     step2.checkRuns() // Compile from tasty and run the result
     (step1 + step2).delete()
diff --git a/compiler/test/dotty/tools/vulpix/ParallelTesting.scala b/compiler/test/dotty/tools/vulpix/ParallelTesting.scala
index 8b2a76164a81..48dcd42a96eb 100644
--- a/compiler/test/dotty/tools/vulpix/ParallelTesting.scala
+++ b/compiler/test/dotty/tools/vulpix/ParallelTesting.scala
@@ -1049,9 +1049,10 @@ trait ParallelTesting extends RunnerOrchestration { self =>
   }
 
   /** Separates directories from files and returns them as `(dirs, files)` */
-  private def compilationTargets(sourceDir: JFile): (List[JFile], List[JFile]) =
+  private def compilationTargets(sourceDir: JFile, blacklist: Set[String] = Set.empty): (List[JFile], List[JFile]) =
     sourceDir.listFiles.foldLeft((List.empty[JFile], List.empty[JFile])) { case ((dirs, files), f) =>
-      if (f.isDirectory) (f :: dirs, files)
+      if (blacklist(f.getName)) (dirs, files)
+      else if (f.isDirectory) (f :: dirs, files)
       else if (isSourceFile(f)) (dirs, f :: files)
       else (dirs, files)
     }
@@ -1176,12 +1177,12 @@ trait ParallelTesting extends RunnerOrchestration { self =>
    *  - Directories can have an associated check-file, where the check file has
    *    the same name as the directory (with the file extension `.check`)
    */
-  def compileFilesInDir(f: String, flags: TestFlags)(implicit testGroup: TestGroup): CompilationTest = {
+  def compileFilesInDir(f: String, flags: TestFlags, blacklist: Set[String] = Set.empty)(implicit testGroup: TestGroup): CompilationTest = {
     val outDir = defaultOutputDir + testGroup + "/"
     val sourceDir = new JFile(f)
     checkRequirements(f, sourceDir, outDir)
 
-    val (dirs, files) = compilationTargets(sourceDir)
+    val (dirs, files) = compilationTargets(sourceDir, blacklist)
 
     val targets =
       files.map(f => JointCompilationSource(testGroup.name, Array(f), flags, createOutputDirsForFile(f, sourceDir, outDir))) ++
@@ -1211,13 +1212,14 @@ trait ParallelTesting extends RunnerOrchestration { self =>
    *  Tests in the first part of the tuple must be executed before the second.
    *  Both testsRequires explicit delete().
    */
-  def compileTastyInDir(f: String, flags0: TestFlags)(implicit testGroup: TestGroup): (CompilationTest, CompilationTest) = {
+  def compileTastyInDir(f: String, flags0: TestFlags, blacklist: Set[String] = Set.empty)(
+      implicit testGroup: TestGroup): (CompilationTest, CompilationTest) = {
     val outDir = defaultOutputDir + testGroup + "/"
     val flags = flags0 and "-Yretain-trees"
     val sourceDir = new JFile(f)
     checkRequirements(f, sourceDir, outDir)
 
-    val (dirs, files) = compilationTargets(sourceDir)
+    val (dirs, files) = compilationTargets(sourceDir, blacklist)
 
     val targets =
       files.map { f =>
@@ -1227,7 +1229,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
     // TODO add SeparateCompilationSource from tasty?
 
     // Create a CompilationTest and let the user decide whether to execute a pos or a neg test
-    val generateClassFiles = compileFilesInDir(f, flags0)
+    val generateClassFiles = compileFilesInDir(f, flags0, blacklist)
     (generateClassFiles.keepOutput, new CompilationTest(targets).keepOutput)
   }
 
diff --git a/tests/pos-from-tasty/anonBridge.scala b/tests/pos/anonBridge.scala
similarity index 100%
rename from tests/pos-from-tasty/anonBridge.scala
rename to tests/pos/anonBridge.scala
diff --git a/tests/pos-from-tasty/simpleClassWithObject.scala b/tests/pos/basicFromTasty.scala
similarity index 100%
rename from tests/pos-from-tasty/simpleClassWithObject.scala
rename to tests/pos/basicFromTasty.scala
diff --git a/tests/pos-from-tasty/i3462.scala b/tests/pos/i3462.scala
similarity index 100%
rename from tests/pos-from-tasty/i3462.scala
rename to tests/pos/i3462.scala
diff --git a/tests/pos-from-tasty/i3596.scala b/tests/pos/i3596.scala
similarity index 100%
rename from tests/pos-from-tasty/i3596.scala
rename to tests/pos/i3596.scala
diff --git a/tests/pos-from-tasty/i3597.scala b/tests/pos/i3597.scala
similarity index 100%
rename from tests/pos-from-tasty/i3597.scala
rename to tests/pos/i3597.scala
diff --git a/tests/pos-from-tasty/i3598.scala b/tests/pos/i3598.scala
similarity index 100%
rename from tests/pos-from-tasty/i3598.scala
rename to tests/pos/i3598.scala
diff --git a/tests/pos-from-tasty/i3606.scala b/tests/pos/i3606.scala
similarity index 100%
rename from tests/pos-from-tasty/i3606.scala
rename to tests/pos/i3606.scala
diff --git a/tests/pos-from-tasty/i3607.scala b/tests/pos/i3607.scala
similarity index 100%
rename from tests/pos-from-tasty/i3607.scala
rename to tests/pos/i3607.scala
diff --git a/tests/pos-from-tasty/i3608.scala b/tests/pos/i3608.scala
similarity index 100%
rename from tests/pos-from-tasty/i3608.scala
rename to tests/pos/i3608.scala
diff --git a/tests/pos-from-tasty/simpleCaseObject.scala b/tests/pos/simpleCaseObject.scala
similarity index 100%
rename from tests/pos-from-tasty/simpleCaseObject.scala
rename to tests/pos/simpleCaseObject.scala
diff --git a/tests/pos-from-tasty/simpleClass.scala b/tests/pos/simpleClass.scala
similarity index 100%
rename from tests/pos-from-tasty/simpleClass.scala
rename to tests/pos/simpleClass.scala
diff --git a/tests/run-from-tasty/innerClass.check b/tests/run/innerClass.check
similarity index 100%
rename from tests/run-from-tasty/innerClass.check
rename to tests/run/innerClass.check
diff --git a/tests/run-from-tasty/innerClass.scala b/tests/run/innerClass.scala
similarity index 100%
rename from tests/run-from-tasty/innerClass.scala
rename to tests/run/innerClass.scala
diff --git a/tests/run-from-tasty/simpleClass.check b/tests/run/simpleClass.check
similarity index 100%
rename from tests/run-from-tasty/simpleClass.check
rename to tests/run/simpleClass.check
diff --git a/tests/run-from-tasty/simpleClass.scala b/tests/run/simpleClass.scala
similarity index 100%
rename from tests/run-from-tasty/simpleClass.scala
rename to tests/run/simpleClass.scala