[Inductor][Intel GPU] Support reduction split. (#129120)

[etaf]

Pull Request resolved: #129120
Approved by: https://github.com/EikanWang, https://github.com/jansel, https://github.com/desertfire
ghstack dependencies: #129124

(cherry picked from commit b0ae0db)

cc @voznesenskym @penguinwu @EikanWang @jgong5 @Guobing-Chen @XiaobingSuper @zhuhaozhe @blzheng @wenzhe-nrv @jiayisunx @peterbell10 @ipiszy @yf225 @chenyang78 @kadeng @muchulee8 @ColinPeppler @amjames @desertfire @chauhang

[pytorch-bot]

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❌ 8 New Failures

As of commit 6b384ee with merge base b66e3f0 ():

NEW FAILURES - The following jobs have failed:

• inductor / cuda12.1-py3.10-gcc9-sm86 / test (aot_inductor_torchbench, 1, 2, linux.g5.4xlarge.nvidia.gpu) (gh)
  hf_BigBird
• inductor / cuda12.1-py3.10-gcc9-sm86 / test (dynamic_inductor_torchbench, 1, 2, linux.g5.4xlarge.nvidia.gpu) (gh)
  hf_BigBird
• inductor / cuda12.1-py3.10-gcc9-sm86 / test (inductor_torchbench, 1, 2, linux.g5.4xlarge.nvidia.gpu) (gh)
  hf_BigBird
• inductor-periodic / cuda12.1-py3.10-gcc9-sm86-periodic-dynamo-benchmarks / test (aot_eager_torchbench, 1, 2, linux.g5.4xlarge.nvidia.gpu) (gh)
  hf_BigBird
• inductor-periodic / cuda12.1-py3.10-gcc9-sm86-periodic-dynamo-benchmarks / test (dynamic_aot_eager_torchbench, 1, 2, linux.g5.4xlarge.nvidia.gpu) (gh)
  hf_BigBird
• inductor-periodic / cuda12.1-py3.10-gcc9-sm86-periodic-dynamo-benchmarks / test (dynamo_eager_torchbench, 1, 2, linux.g5.4xlarge.nvidia.gpu) (gh)
  hf_BigBird
• pull / linux-focal-py3_8-clang9-xla / test (xla, 1, 1, linux.12xlarge) (gh)
  test_repeat_truncated
• pull / linux-focal-py3.12-clang10 / test (default, 1, 3, linux.2xlarge) (gh)
  dynamo/test_dynamic_shapes.py::DynamicShapesMiscTests::test_outside_linear_module_free_dynamic_shapes

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