Arm backend: Rename test_arm_baremetal.sh to test_arm_backend.sh

[zingo]

Rename tests script as it tests both Arm Ethos-U and VGF backend

Test plan

This script is tested by the GitHub jobs

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

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/19665

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❌ 1 New Failure, 7 Pending, 1 Unrelated Failure

As of commit 68abe96 with merge base 5eb8492 ():

NEW FAILURE - The following job has failed:

• pull / unittest / macos / macos-job (gh)
  backends/xnnpack/test/ops/test_conv2d.py::TestConv2d::test_fp16_conv2d

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• pull / test-qnn-testsuite-linux / test-backend-linux (qnn, models) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

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[Copilot]

Pull request overview

This PR updates the Arm backend CI/test entrypoint by switching references from test_arm_baremetal.sh to a newly added test_arm_backend.sh, aligning the naming with the script’s actual coverage (Ethos-U + VGF/VKML).

Changes:

• Add backends/arm/test/test_arm_backend.sh and update CI workflows to invoke it.
• Update Arm backend documentation to reference test_arm_backend.sh.
• Rename workflow matrix key from test_arm_baremetal to test_arm_backend.

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 6 comments.

File	Description
backends/arm/test/test_arm_backend.sh	Adds the newly named Arm backend test runner script used by CI.
backends/arm/README.md	Updates testing docs to reference the new script name and commands.
.github/workflows/trunk.yml	Updates trunk CI to use the new matrix key and script path.
.github/workflows/pull.yml	Updates PR CI to use the new matrix key and script path.

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 6 changed files in this pull request and generated 5 comments.

Comments suppressed due to low confidence (1)

backends/arm/test/test_arm_backend.sh:72

• In all(), the generated commands are prefixed with $0, but the script changes directories early on. If invoked via a relative path (e.g. ./test_arm_backend.sh all from backends/arm/test), $0 won't be valid from the new working directory and the sub-shell will fail to execute the tests. Consider prefixing with an absolute script path (from script_dir/BASH_SOURCE[0]) instead of $0.

    # That is executed
    echo "${TEST_SUITE_NAME}: Run all tests"
    grep "^test_" backends/arm/test/test_arm_backend.sh | sed 's/([^)]*)[[:space:]]*{*//g' | sed "s|^|$0 |" | sh
    echo "${TEST_SUITE_NAME}: PASS"

[Copilot]

Pull request overview

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 5 out of 6 changed files in this pull request and generated no new comments.