Arm backend: Add support for floor_divide.default

[agrima1304]

Converts floor_divide.default to div.Tensor_mode with rounding_mode = "floor"

cc @freddan80 @per @zingo @oscarandersson8218 @digantdesai

[pytorch-bot]

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/14933

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❌ 10 New Failures, 3 Unrelated Failures

As of commit 5f5bf9b with merge base 6307924 ():

NEW FAILURES - The following jobs have failed:

• Build Presets / zephyr (zephyr) / build (gh)
• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t fdc208e106c11b23516a533104fe77788a778f90cd5e8fa6048a9a13c7b93633 /exec failed with exit code 1
• pull / unittest-arm-backend-with-no-fvp (test_pytest_ops) / linux-job (gh)
  RuntimeError: Command docker exec -t dbaeeae7680efc326c4ac8eb4158ed5909c68b8b53fce7c3f052d0f05afd0dd1 /exec failed with exit code 1
• pull / unittest-nxp-neutron / linux-job (gh)
  RuntimeError: Command docker exec -t 817d634cdc952ef3c60e17f86bb746c3f83a5239e5f88cd64c8648f40b865dcc /exec failed with exit code 1
• Test CUDA Builds / export-gemma3-cuda-non-quantized / linux-job (gh)
  RuntimeError: Command docker exec -t 99862bb64691a674745cbb9cb2df7f93d4a7f10a8dc64d4cffd473cd06c241c7 /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-non-quantized / linux-job (gh)
  RuntimeError: Command docker exec -t 4320d1651f1cd8227fdba691067788faa2ce19f59a62bd664fe4119f6f77de31 /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-quantized-int4-tile-packed / linux-job (gh)
  RuntimeError: Command docker exec -t bb13c5d9f6057a108c360da58a036113e31c79d897c179f277a36df41f85c853 /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-quantized-int4-weight-only / linux-job (gh)
  RuntimeError: Command docker exec -t d14b553c2dd18b37c14e9429ea7f74559b4dcbc41d9ecf5ca690875d97f21922 /exec failed with exit code 2
• Test Metal Backend / export-voxtral-metal-artifact / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 2
• trunk / test-llama-runner-qnn-linux (fp32, qnn_8a8w, qnn) / linux-job (gh)
  RuntimeError: Command docker exec -t 38706e03b8bf03965273680232c764c395fb3b29be4a80900af0c600d3c9e753 /exec failed with exit code 1

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / linux / linux-job (gh) (trunk failure)
• pull / unittest-editable / linux / linux-job (gh) (trunk failure)
• trunk / unittest-release / linux / linux-job (gh) (trunk failure)

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[zingo]

Hi I see some testfails in backends/arm/test/ops/test_floor_div.py::test_floor_divide*
https://github.com/pytorch/executorch/actions/runs/18406911009/job/52448990081?pr=14933

[digantdesai]

+1

[agrima1304]

Hi I see some testfails in backends/arm/test/ops/test_floor_div.py::test_floor_divide* https://github.com/pytorch/executorch/actions/runs/18406911009/job/52448990081?pr=14933

I am working on fixes for the failures 👍