[msluszniak]

Summary

Remove0DTensor replaced a 0D select with its whole source, which is only right for a 1-element source: y + x[1] became y + x, and torch.full(shape, t[i]) (YOLO26's anchor grid) became a copy of all of t. It now keeps the selected element as a 1-element slice_copy.

Test plan

New test_qnn_backend_select_element (FP and quantized) fails on main and passes here (x86 simulator); the Remove0DTensor rework test now checks the slice. test_passes.py, rework/passes/test.py and the full TestQNNFloatingPointOperator / TestQNNQuantizedOperator / TestQNNFloatingPointModel suites give the same results as main.

cc @cccclai @winskuo-quic @shewu-quic @haowhsu-quic @DannyYuyang-quic @cbilgin @abhinaykukkadapu @psiddh @nil-is-all

[pytorch-bot]

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❌ 2 New Failures, 2 Unclassified Failures

As of commit 9641725 with merge base e6cfbf8 ():

NEW FAILURES - The following jobs have failed:

• pull / nxp-mcuxpresso-test / linux-job (gh)
  RuntimeError: Command bash /__w/_temp/exec_script failed with exit code 1
• pull / unittest-nxp-neutron / linux-job (gh)
  RuntimeError: Command bash /__w/_temp/exec_script failed with exit code 1

UNCLASSIFIED FAILURES - DrCI could not classify the following jobs because the workflow did not run on the merge base. The failures may be pre-existing on trunk or introduced by this PR:

• periodic / gather-models (gh) (this job did not run on the merge base, so DrCI cannot tell whether the failure is pre-existing)
• periodic / Resolve CI docker image / resolve (gh) (this job did not run on the merge base, so DrCI cannot tell whether the failure is pre-existing)

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[nil-is-all]

Tagging @qti-horodnic, @shewu-quic, @winskuo-quic, @chenweng-quic, @DannyYuyang-quic, @quic-boyuc, @qti-mmadhava, @zhaoxul-qti, @jethroqti to review.

[msluszniak]

Closing: superseded by #24222, which fixes the same wrong output in Remove0DTensor by only removing a 0D select whose source has one element.