Add a test for the driver-level -fmodules/-fno-modules flags.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147480 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Driver/modules.m b/test/Driver/modules.m
new file mode 100644 (file)
index 0000000..b93054d
--- /dev/null
+++ b/test/Driver/modules.m
@@ -0,0 +1,6 @@
+// RUN: %clang -fmodules -fno-modules -### %s 2>&1 | FileCheck -check-prefix=CHECK-NO-MODULES %s
+// CHECK-NO-MODULES-NOT: -fmodules
+
+// RUN: %clang -fmodules -fno-modules -fmodules -### %s 2>&1 | FileCheck -check-prefix=CHECK-HAS-MODULES %s
+// CHECK-HAS-MODULES: -fmodules
+