llvmc: Add a test for the -c flag.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116611 91177308-0d34-0410-b5e6-96231b3b80d8

test/LLVMC/C++/just-compile.cpp

@@ -0,0 +1,10 @@
+// Test that the -c flag works.
+// RUN: llvmc -c %s -o %t.o
+// RUN: llvmc --linker=c++ %t.o -o %t
+// RUN: %abs_tmp | grep hello
+// XFAIL: vg
+#include <iostream>
+
+int main() {
+    std::cout << "hello" << '\n';
+}