`test/Driver/debug-options.c` to ensure that the driver
selects the DWARF 2 version as intended by the test.
Fixes the `test/Driver/debug-options.c` test regression on GreenDragon
on macOS that started failing after r357713.
llvm-svn: 357740
// RUN: | FileCheck -check-prefix=G -check-prefix=G_DWARF4 %s
// Darwin.
-// RUN: %clang -### -c -g %s -target x86_64-apple-darwin 2>&1 \
+// RUN: %clang -### -c -g %s -target x86_64-apple-darwin14 2>&1 \
// RUN: | FileCheck -check-prefix=G_STANDALONE \
// RUN: -check-prefix=G_DWARF2 \
// RUN: -check-prefix=G_LLDB %s