Add support for the /Fi argument to clang-cl (PR20036)

Patch by Ehsan Akhgari!

Differential Revision: http://reviews.llvm.org/D4143

llvm-svn: 211081
diff --git a/clang/test/Driver/cl-outputs.c b/clang/test/Driver/cl-outputs.c
index ad4051d..46502f6 100644
--- a/clang/test/Driver/cl-outputs.c
+++ b/clang/test/Driver/cl-outputs.c
@@ -109,3 +109,11 @@
 // RUN: %clang_cl /P -### -- %s 2>&1 | FileCheck -check-prefix=P %s
 // P: "-E"
 // P: "-o" "cl-outputs.i"
+
+// RUN: %clang_cl /P /Fifoo -### -- %s 2>&1 | FileCheck -check-prefix=Fi1 %s
+// Fi1: "-E"
+// Fi1: "-o" "foo.i"
+
+// RUN: %clang_cl /P /Fifoo.x -### -- %s 2>&1 | FileCheck -check-prefix=Fi2 %s
+// Fi2: "-E"
+// Fi2: "-o" "foo.x"