[llvm] RFC: [AMDGPU] Select CONVERGENCECTRL_GLUE generically (PR #87509)

[Jay Foad via llvm-commits]

jayfoad wrote:

> @jayfoad, what's the plan for this change? Do you intend to put `SDNPOptInGlue` on all convergent ops in the TD files?

Yes, if both reviewers are in favour of doing that, but it is not very high on my priority list.

I also tried splitting "the first thing [...] adding generic selection from ISD::CONVERGENCECTRL_GLUE -> TargetOpcode::CONVERGENCECTRL_GLUE" into a separate patch, but I ran into some technical problem that I never got round to debugging.


https://github.com/llvm/llvm-project/pull/87509