[llvm] [TableGen] Sort matchables depending on predicates. (PR #84483)

[Ivan Kosarev via llvm-commits]

kosarev wrote:

> I agree I think the real issue is why has this non-determinism creaped in that wasn't here previously. I will have a look at trying to compare these on Monday. It is quite frustrating to debug as it doesn't reliably repreoduce on my machine.

In AMDGPU we had this kind of ambiguity sitting there for quite a while without noticing: https://github.com/llvm/llvm-project/issues/69256. Wouldn't be surprised if it's the same with other backends.


https://github.com/llvm/llvm-project/pull/84483