[clang] nonblocking/nonallocating attributes (was: nolock/noalloc) (PR #84983)

[Doug Wyatt via cfe-commits]

dougsonos wrote:

> So seems like I was just premature, makes sense to break this in to pieces :). Am I right to assume that these warnings will be back, just in PR 2?

Yes, you can revert c18b77459fb34482f169323de9a81142a922b6a7 to bring the caller/callee diagnostics back.

https://github.com/llvm/llvm-project/pull/84983