[clang] [CIR] Implement codegen for inline assembly without input and output operands (PR #153546)

[Andy Kaylor via cfe-commits]

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

This looks good, once a couple of nits are addressed. Thanks for breaking it down into a small piece for easier review!

https://github.com/llvm/llvm-project/pull/153546