[MLIR][XeGPU] Add XeGPU scattered ops (#86594)

- Extended TensorDescAttr with scattered attribute
- Add scattered ops: CreateDescOp, PrefetchOp, LoadGatherOp,
StoreScatterOp, UpdateOffsetOp
- Add a block op: UpdateNdOffsetOp

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Co-authored-by: Mehdi Amini <joker.eph@gmail.com>
Co-authored-by: Adam Siemieniuk <adam.siemieniuk@intel.com>
GitOrigin-RevId: b01879ec1ffbd249f9bf3c4f32308443be6ac36b
8 files changed
tree: f240a5e1607559bb08a8bf3e4441654e909801f9
  1. benchmark/
  2. cmake/
  3. docs/
  4. examples/
  5. include/
  6. lib/
  7. python/
  8. test/
  9. tools/
  10. unittests/
  11. utils/
  12. .clang-format
  13. .clang-tidy
  14. CMakeLists.txt
  15. LICENSE.TXT
  16. README.md
README.md

Multi-Level Intermediate Representation

See https://mlir.llvm.org/ for more information.