[clang] [flang] [flang][Driver] Support -nostdlib and -nodefaultlibs (PR #108868)

[Tarun Prabhu via cfe-commits]

================
@@ -5572,7 +5572,8 @@ def : Flag<["-"], "nocudalib">, Alias<nogpulib>;
 def gpulibc : Flag<["-"], "gpulibc">, Visibility<[ClangOption, CC1Option, FlangOption, FC1Option]>,
   HelpText<"Link the LLVM C Library for GPUs">;
 def nogpulibc : Flag<["-"], "nogpulibc">, Visibility<[ClangOption, CC1Option, FlangOption, FC1Option]>;
-def nodefaultlibs : Flag<["-"], "nodefaultlibs">;
+def nodefaultlibs : Flag<["-"], "nodefaultlibs">,
+  Visibility<[ClangOption, FlangOption, CLOption, DXCOption]>;
----------------
tarunprabhu wrote:

>From what i was able to tell when I changed this, the lack of an explicit visibility implied these 4, but perhaps I was mistaken. I have no way to test clang-cl. Is there a test for this somewhere?

https://github.com/llvm/llvm-project/pull/108868