Add test case I forgot for r115159 (support implicit includes along with PCH).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115247 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/PCH/cmdline-include.c b/test/PCH/cmdline-include.c
new file mode 100644
index 0000000..ad45192
--- /dev/null
+++ b/test/PCH/cmdline-include.c
@@ -0,0 +1,6 @@
+// RUN: %clang_cc1 -include %S/cmdline-include1.h -x c-header %S/cmdline-include2.h -emit-pch -o %t
+// RUN: %clang_cc1 %s -include-pch %t -fsyntax-only -verify
+// RUN: %clang_cc1 -x c-header %S/cmdline-include1.h -emit-pch -o %t
+// RUN: %clang_cc1 %s -include-pch %t -include %S/cmdline-include2.h -fsyntax-only -verify
+
+int g = x1 + x2;