[clang] [llvm] [PAC][clang][Driver] Add signed GOT flag (PR #96160)

[Peter Smith via cfe-commits]

https://github.com/smithp35 commented:

Does this need a clang command line option at this point? Would it be possible to live with a {{-mllvm}} option to turn on signed GOT? I would expect signed GOT (or not) would be part of a higher-level signing schema and not toggled at a low-level via clang.

I know that there are existing command-line options for other signing schema affecting options, but I'm not sure if we want to add more to them.

https://github.com/llvm/llvm-project/pull/96160