[clang] [libc] [Clang] Implement resource directory headers for common GPU intrinsics (PR #110179)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

Seems there's something *slightly* different from the autogenerated IR for the language test. I'll see if I can fix it.

https://github.com/llvm/llvm-project/pull/110179