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Cortex-M backend: Add cmsis_nn pybind dependency#19279

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Erik-Lundell merged 3 commits into
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Erik-Lundell:upstream-cmsis-dep
May 11, 2026
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Cortex-M backend: Add cmsis_nn pybind dependency#19279
Erik-Lundell merged 3 commits into
pytorch:mainfrom
Erik-Lundell:upstream-cmsis-dep

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@Erik-Lundell Erik-Lundell commented May 4, 2026

- Add cmsis_nn to new optional-dependency called [cortex_m]

- Additionally, add an install step that allows optional
depedencies to install required build tools. This is needed
for cortex_m.

- Add cmsis_nn to backends/cortex_m/requirements-cortex-m.txt
and add possibility to install from setup.sh to not break
backwards compatability, and to mirror ethos_u and vgf backend.

- Add guard to cortex_m/passes/__init__.py to fail gracefully if
cortex_m dependencies are not installed.

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218 @mansnils @Sebastian-Larsson @robell

- Add cmsis_nn to new optional-dependency called [cortex_m]

- Additionally, add an install step that allows optional
depedencies to install required build tools. This is needed
for cortex_m.

- Add cmsis_nn to backends/cortex_m/requirements-cortex-m.txt
and add possibility to install from setup.sh to not break
backwards compatability, and to mirror ethos_u and vgf backend.

- Add guard to cortex_m/passes/__init__.py to fail gracefully if
cortex_m dependencies are not installed.

Signed-off-by: Erik Lundell <erik.lundell@arm.com>
Change-Id: I0c98b04cb19cccee44e8362a7bdded2f8a90cd1d
Signed-off-by: Erik Lundell <erik.lundell@arm.com>
Change-Id: Id4dc3d8964889683fb941f8cfc70270521291dec
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pytorch-bot Bot commented May 4, 2026

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/19279

Note: Links to docs will display an error until the docs builds have been completed.

❗ 1 Active SEVs

There are 1 currently active SEVs. If your PR is affected, please view them below:

❌ 8 New Failures, 2 Cancelled Jobs, 4 Unrelated Failures

As of commit f22c3a4 with merge base 8a397b4 (image):

NEW FAILURES - The following jobs have failed:

CANCELLED JOBS - The following jobs were cancelled. Please retry:

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

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

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@meta-cla meta-cla Bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label May 4, 2026
@github-actions github-actions Bot added ciflow/trunk module: arm Issues related to arm backend labels May 4, 2026
@Erik-Lundell Erik-Lundell added ciflow/trunk partner: arm For backend delegation, kernels, demo, etc. from the 3rd-party partner, Arm release notes: none Do not include this in the release notes labels May 4, 2026
@Erik-Lundell Erik-Lundell merged commit d939b9b into pytorch:main May 11, 2026
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ciflow/trunk CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. module: arm Issues related to arm backend partner: arm For backend delegation, kernels, demo, etc. from the 3rd-party partner, Arm release notes: none Do not include this in the release notes

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