[llvm] [AMDGPU][TTI] Add Target Hook for Instruction Uniformity (getInstructionUniformity) (PR #137639)

[Pankaj Dwivedi via llvm-commits]

PankajDwivedi-25 wrote:

> Don't we already have special context dependent uniformity with the existing API? e.g. identifying math based on the work item ID

I don't get this. you mean pattern optimizations based on work item ID?

I don't see any such API existing at the IR level.

https://github.com/llvm/llvm-project/pull/137639