[llvm] [VPlan] Add VPBundleRecipe, replacing extended reduction recipes. (PR #144281)

[Luke Lau via llvm-commits]

https://github.com/lukel97 commented:

Would we want to consider VPWidenIntOrFpInductionRecipe a type of VPBundleRecipe? If so I presume we would still want it to also be a VPWidenPHIRecipe which has its own subclass, which would conflict with VPBundleSC. In which case we would need some form of multiple inheritance instead?

https://github.com/llvm/llvm-project/pull/144281