a800ffac41
Making the existing populateGpuLowerSubgroupReduceToShufflePatterns() function also cover the new "clustered" subgroup reductions is proving to be inconvenient, because certain backends may have more specific lowerings that only cover the non-clustered type, and this creates pass ordering constraints. This commit removes coverage of clustered reductions from this function in favour of a new separate function, which makes controlling the lowering much more straightforward.
Multi-Level Intermediate Representation
See https://mlir.llvm.org/ for more information.