[clang] [llvm] [mlir] IR: Promote "denormal-fp-math" to a first class attribute (PR #174293)

[Matt Arsenault via cfe-commits]

arsenm wrote:

> I guess you could use `;` if you really wanted to distinguish them.

Using the comment character probably won't work

> Okay, fine to keep it then.

Probably could also get by with sed, I guess 



https://github.com/llvm/llvm-project/pull/174293