pytorch

1e4079a4 - [nnc] Disable opaque pointers mode in LLVM backend to allow getPointerElementType (#88798)

[nnc] Disable opaque pointers mode in LLVM backend to allow getPointerElementType (#88798) As of LLVM 15 typed pointers are going away: https://llvm.org/docs/OpaquePointers.html. Thus `getPointerElementType` is no longer legal, since pointers are all opaque. I don't totally remember why we use it so prolifically, or whether there's an easy change to get rid of it, or whether we'd need a significant refactor to carry around `Type`s alongside `Value`s. But in any case, NNC is deprecated (see: TorchInductor) and will hopefully be gone before LLVM 16 is a thing. For now, we can apply the hack of turning off opaque pointer mode on the LLVMContext. Differential Revision: [D41176215](https://our.internmc.facebook.com/intern/diff/D41176215) Pull Request resolved: https://github.com/pytorch/pytorch/pull/88798 Approved by: https://github.com/desertfire