[clang] [CIR] Call code gen; create empty cir.func op (PR #113483)

[David Olsen via cfe-commits]

dkolsen-pgi wrote:

> Is it at all possible to write a test to exercise the new functionality,

Yes, The change that I just committed includes updating the existing test to verify that a `cir.func` op is generated correctly.


https://github.com/llvm/llvm-project/pull/113483