Disable splitter

Author: liufengyun

compiler/src/dotty/tools/dotc/Compiler.scala

@@ -69,8 +69,7 @@ class Compiler {
          new ExplicitOuter,          // Add accessors to outer classes from nested ones.
          new ExplicitSelf,           // Make references to non-trivial self types explicit as casts
          new StringInterpolatorOpt,  // Optimizes raw and s string interpolators by rewriting them to string concatentations
-         new CrossCastAnd,           // Normalize selections involving intersection types.
-         new Splitter) ::            // Expand selections involving union types into conditionals
+         new CrossCastAnd) ::        // Normalize selections involving intersection types.
     List(new PruneErasedDefs,        // Drop erased definitions from scopes and simplify erased expressions
          new VCInlineMethods,        // Inlines calls to value class methods
          new SeqLiterals,            // Express vararg arguments as arrays

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

@@ -36,9 +36,6 @@ class ElimByName extends TransformByNameApply with InfoTransformer {
 
   override def phaseName: String = ElimByName.name
 
-  override def runsAfterGroupsOf: Set[String] = Set(Splitter.name)
-    // I got errors running this phase in an earlier group, but I did not track them down.
-
   override def changesParents: Boolean = true // Only true for by-names
 
   /** Map `tree` to `tree.apply()` is `ftree` was of ExprType and becomes now a function */

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

@@ -34,7 +34,7 @@ class Erasure extends Phase with DenotTransformer {
   override def phaseName: String = Erasure.name
 
   /** List of names of phases that should precede this phase */
-  override def runsAfter: Set[String] = Set(InterceptedMethods.name, Splitter.name, ElimRepeated.name)
+  override def runsAfter: Set[String] = Set(InterceptedMethods.name, ElimRepeated.name)
 
   override def changesMembers: Boolean = true // the phase adds bridges
   override def changesParents: Boolean = true // the phase drops Any

compiler/test/dotty/tools/dotc/transform/PatmatExhaustivityTest.scala

@@ -17,7 +17,7 @@ import vulpix.TestConfiguration
 class PatmatExhaustivityTest {
   val testsDir = "tests/patmat"
   // stop-after: patmatexhaust-huge.scala crash compiler
-  val options = List("-color:never", "-Ystop-after:splitter", "-Ycheck-all-patmat", "-classpath", TestConfiguration.basicClasspath)
+  val options = List("-color:never", "-Ystop-after:crossCast", "-Ycheck-all-patmat", "-classpath", TestConfiguration.basicClasspath)
 
   private def compileFile(path: JPath) = {
     val stringBuffer = new StringWriter()