[llvm-branch-commits] [clang] release/19.x: [clang] Wire -fptrauth-returns to "ptrauth-returns" fn attribute. (#102416) (PR #102670)

[Anton Korobeynikov via llvm-branch-commits]

https://github.com/asl approved this pull request.

This is one of two small frontend changes require to close the chain of changes required for end-to-end support of pointer authentication in LLVM 19.

The change does not affect any other target and essentially just propagate command line options down to attributes.

https://github.com/llvm/llvm-project/pull/102670