Enable deep type check

Author: liufengyun

compiler/test/dotty/tools/dotc/BootstrappedOnlyCompilationTests.scala

@@ -24,7 +24,7 @@ class BootstrappedOnlyCompilationTests {
   @Test def posMacros: Unit = {
     implicit val testGroup: TestGroup = TestGroup("compilePosMacros")
     aggregateTests(
-      compileFilesInDir("tests/bench", defaultOptions),
+      compileFilesInDir("tests/bench", defaultOptions.without("-Yno-deep-subtypes")),
       compileFilesInDir("tests/pos-macros", defaultOptions),
       compileFilesInDir("tests/pos-custom-args/semanticdb", defaultOptions.and("-Xsemanticdb")),
       compileDir("tests/pos-special/i7592", defaultOptions.and("-Yretain-trees")),