perf(reverse): use a dedicated kernel for the dims reversal - #118
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shreyas-omkar wants to merge 4 commits into
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perf(reverse): use a dedicated kernel for the dims reversal#118shreyas-omkar wants to merge 4 commits into
shreyas-omkar wants to merge 4 commits into
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Add a `dims` keyword to `reverse!`/`reverse`, reaching parity with `Base.reverse` and the vendor reverse kernels. `dims=:` (the default) keeps the fast flat path - each thread swaps one mirrored pair - while `dims=d` (an integer or iterable) reverses only along those dimensions via a general ND kernel written on `foreachindex`, so it runs on every backend (CUDA/AMDGPU/oneAPI/Metal/POCL) and the CPU-threaded path from one implementation. Invalid dims throw `ArgumentError`. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Exercise single-dim, multi-dim ((1,2)/(2,3)/(1,3)/:), size-1 degenerate dims and 3-D arrays across in-place, out-of-place and allocating forms, plus ArgumentError on out-of-range dims. Verified on CPU-threaded, AMDGPU (ROCm) and POCL backends. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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