[llvm] [SelectionDAG] Add support to filter SelectionDAG dumps during ISel by function names (PR #72696)

[Paul Kirth via llvm-commits]

ilovepi wrote:


> I haven't found a proper `docs/*.rst` to put this thing yet but I've put it in the release notes.

Maybe `docs/CodeGenerator.rst`? there is a section on instruction selection that lists some debug options, like `-view-dag-combine1-dags` and `-filter-view-dags`, but IDK if there is a more appropriate spot in another file. Nothing else immediately jumps out at me, but maybe @topperc has a better suggestion?

https://github.com/llvm/llvm-project/pull/72696