nvfuser update (#63745)

nvfuser update (#63745)

Summary:
Syncing nvfuser code base from devel branch, Listing a few of our development since last sync:

- Extends support to normalization and reduction kernels.
- Multiple kernel launch for single `CudaFusionGroup`. Hierarchical caching system has been updated to cache graph segmentation.
- profile_ivalue is enabled to convert dynamic scalar into compile time constants, which are required by the codegen. (e.g. reduction axes).

To keep this PR simple and relatively review-free. We stripped most external changes and submitted them as separate PRs, so this gigantic PR is easier to handle.

internal updates are files located in:
1. updates in nvfuser codegen `torch/csrc/jit/coddgen/cuda`
2. added nvfuser specific benchmarks `benchmarks/cpp/nvfuser`
3. nvfuser jit cpp tests `test/cpp/jit/test_gpu.cpp` `test/cpp/jit/test_gpu_shift.cpp` `test/cpp/jit/test_gpu_validator.h`

updates affecting integration:

1. profile_ivalue enabled for nvfuser. related changes are in `torch/csrc/jit/runtime/*`,
2. exposed a few more symbols `aten/src/ATen/core/*` used by codegen

Pull Request resolved: https://github.com/pytorch/pytorch/pull/63745

Reviewed By: saketh-are

Differential Revision: D30752939

Pulled By: malfet

fbshipit-source-id: ce122e80f01bcd3865f5bd3c4dfde660665fd84c