[PAC][Driver] Choose between two ways of implementing ptrauth flags

[kovdan01]

Currently, we have a bunch of -fptrauth-* flags. As discussed in #96160 (comment), we might want to change -fptrauth-xxx -fptrauth-yyy to smth like -fptrauth=xxx,yyy.

This issue is intended to be used as a thread for discussion whether we need to implement such a change. Personally, I like the way with comma-separated options, but I have no issues with current state of flags as well.

[kovdan01]

Tagging @MaskRay @ahmedbougacha @asl

[llvmbot]

@llvm/issue-subscribers-clang-driver

Author: Daniil Kovalev (kovdan01)

Currently, we have a bunch of `-fptrauth-*` flags. As discussed in https://github.com//pull/96160#issuecomment-2183305495, we might want to change `-fptrauth-xxx -fptrauth-yyy` to smth like `-fptrauth=xxx,yyy`.

This issue is intended to be used as a thread for discussion whether we need to implement such a change. Personally, I like the way with comma-separated options, but I have no issues with current state of flags as well.