[upstream_ut] torch._dynamo.exc.Unsupported: Attempted to inline function marked as skipped

[Stonepia]

[upstream_ut] torch._dynamo.exc.Unsupported: Attempted to inline function marked as skipped

Fixes intel/torch-xpu-ops#2715

Root Cause: When torch.xpu.device(x.device.index - 1) is traced by Dynamo, the dispatch in user_defined.py finds XPUDeviceVariable via _device_context_manager_map but immediately raises Unsupported because args[0].is_python_constant() returns False for a symbolic tensor attribute expression. This triggers a graph break, and Dynamo falls back to inlining torch.xpu.device.__init__ directly. Since the entire torch.xpu module is in MOD_SKIPLIST in trace_rules.py (line 3638), inlining is rejected with 'Attempted to inline function marked as skipped'. The CUDA test passes because x.device.index - 1 evaluates to a Python constant for CUDA tensors during tracing, bypassing the error branch.

Failed Tests:

• test/dynamo/test_ctx_manager.py::CtxManagerTests::test_cuda_device

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Diff stat:

torch/_dynamo/trace_rules.py            | 12 +++++-----
 torch/_dynamo/variables/ctx_manager.py  | 39 ++++++++++++++++++++++++++-------
 torch/_dynamo/variables/user_defined.py |  7 +-----
 3 files changed, 39 insertions(+), 19 deletions(-)