[clang] [llvm] [Clang][inlineasm] Add special support for "rm" output constraints (PR #92040)

[Bill Wendling via llvm-commits]

bwendling wrote:

@MaskRay, @yonghong-song, et al. I had to update a couple of BPF tests. This new pass isn't run at all during those testcases, and yet they changed in small ways. Could you please look?

https://github.com/llvm/llvm-project/pull/92040