[PR] perf(compute): vectorize numeric to boolean casts [arrow-go]

["fallintoplace (via GitHub)" <gi...@apache.org>]

fallintoplace opened a new pull request, #1282:
URL: https://github.com/apache/arrow-go/pull/1282

   ## What does this PR do?
   
   - Adds an ARM64 NEON fast path for numeric to boolean casts.
   - Reuses the existing NEON `array != scalar` comparison kernel to produce the output bitmap.
   - Covers int32, uint32, int64, uint64, float32, and float64.
   - Keeps the scalar path for narrow integers, noasm builds, unsupported CPUs, and appengine.
   - Adds coverage for NaN, signed zero, infinities, sliced input, and bitmap tails.
   - Adds a benchmark matrix for the supported types, sizes, and zero distributions.
   
   ## Benchmark
   
   Apple M1 Pro, `GOMAXPROCS=1`, compared with `-tags noasm`.
   
   - 32-bit types: about 9x faster at 65K values and about 14x faster at 1M values.
   - 64-bit types: about 6x faster at 65K values and about 8x faster at 1M values.
   - Small arrays keep the same allocation count and retain the scalar tail path.
   
   ## Tests
   
   - `go test ./arrow/compute ./arrow/compute/internal/kernels`
   - `go test -tags noasm ./arrow/compute ./arrow/compute/internal/kernels`
   - amd64 compile check for the compute package noasm fallback


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Re: [PR] perf(compute): vectorize numeric to boolean casts [arrow-go]

["zeroshade (via GitHub)" <gi...@apache.org>]

zeroshade merged PR #1282:
URL: https://github.com/apache/arrow-go/pull/1282


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