[clang][NFC] Also test for serialization in test/AST/ast-dump-APValue-*
This does not actually exercise the serialization of APValue, but it
will at least prevent a regression in the future. NFC.
diff --git a/clang/test/AST/ast-dump-APValue-todo.cpp b/clang/test/AST/ast-dump-APValue-todo.cpp
index 5de8146..78cc9cf 100644
--- a/clang/test/AST/ast-dump-APValue-todo.cpp
+++ b/clang/test/AST/ast-dump-APValue-todo.cpp
@@ -1,6 +1,14 @@
+// Test without serialization:
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -Wno-unused-value -std=gnu++17 \
// RUN: -ast-dump %s -ast-dump-filter Test \
// RUN: | FileCheck --strict-whitespace --match-full-lines %s
+//
+// Test with serialization:
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -Wno-unused-value -std=gnu++17 -emit-pch -o %t %s
+// RUN: %clang_cc1 -x c++ -triple x86_64-unknown-unknown -Wno-unused-value -std=gnu++17 \
+// RUN: -include-pch %t -ast-dump-all -ast-dump-filter Test /dev/null \
+// RUN: | sed -e "s/ <undeserialized declarations>//" -e "s/ imported//" \
+// RUN: | FileCheck --strict-whitespace --match-full-lines %s
int i;
struct S {