Arm backend: Add bounded U55 unfold_copy support - #22412
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🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/22412
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Lower static unfold_copy operations with at most 16 windows to slices, transposes, and concatenation. Keep BOOL, larger, and symbolic cases on portable fallback. Authored with Codex. Signed-off-by: Per Held <per.held@arm.com> Change-Id: Ie17547fe3c0c09207ae2442d601ea41c2c870516
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Lower static unfold_copy operations with at most 16 windows to slices, transposes, and concatenation. Keep BOOL, larger, and symbolic cases on portable fallback.
Authored with Codex.
Change-Id: Ie17547fe3c0c09207ae2442d601ea41c2c870516
cc @digantdesai @freddan80 @per @zingo @oscarandersson8218 @mansnils @Sebastian-Larsson @robell @rascani