Merge pull request #14704 from polac24/ast-nested-enum-type

[SIL] Print full nested enum type name

Author: jrose-apple

lib/AST/ASTPrinter.cpp

@@ -1760,14 +1760,8 @@ static void printExtendedTypeName(Type ExtendedType, ASTPrinter &Printer,
                                   PrintOptions Options) {
   auto Nominal = ExtendedType->getAnyNominal();
   assert(Nominal && "extension of non-nominal type");
-  if (auto ct = ExtendedType->getAs<ClassType>()) {
-    if (auto ParentType = ct->getParent()) {
-      ParentType.print(Printer, Options);
-      Printer << ".";
-    }
-  }
-  if (auto st = ExtendedType->getAs<StructType>()) {
-    if (auto ParentType = st->getParent()) {
+  if (auto nt = ExtendedType->getAs<NominalType>()) {
+    if (auto ParentType = nt->getParent()) {
       ParentType.print(Printer, Options);
       Printer << ".";
     }

test/SIL/printer_include_decls.swift

@@ -36,9 +36,18 @@ class Foo {
 
   func m() {}
 // CHECK: func m()
+
+  enum E {}
+// CHECK: enum E
 }
 
 func bar(x: Foo) -> Int {
   return x.x
 }
 // CHECK: func bar(x: Foo) -> Int
+
+extension Foo.E {
+// CHECK: extension Foo.E {
+  func e(x: Foo.E) {}
+// CHECK: func e(x: Foo.E)
+}