Implement support for GCC's -dD mode, which dumps -E output *and*
macro definitions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68884 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Preprocessor/dump-options.c b/test/Preprocessor/dump-options.c
new file mode 100644
index 0000000..6910e1a
--- /dev/null
+++ b/test/Preprocessor/dump-options.c
@@ -0,0 +1,3 @@
+// RUN: clang %s -E -dD | grep __INTMAX_MAX__ &&
+// RUN: clang %s -E -dM | grep __INTMAX_MAX__
+