[clang] `__noop` not marked as constexpr #102064 (PR #105983)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

An off-topic concern:
The issue was initially assigned to @AdiSin123 three weeks ago. Did you talk to @AdiSin123 to ensure that @AdiSin123 gives up the fix? It would be polite to ask first in the issue before you start working on this.

https://github.com/llvm/llvm-project/pull/105983