simd: data-indexed mask primitives — gather, scatter-or, keyed group-sum, indexed predicate, key-run distinct fold - #318

Merged

AdaWorldAPI merged 9 commits into

claude/fold-distillation-pr-wave-s57uj7

Sep 22, 2026

Commits on Sep 21, 2026

simd: three data-indexed mask primitives — gather, scatter-or, keyed group-sum
claude
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4170e58
simd: masked_group_sum_i32_via — keyed group-sum with the key read through a fk hop
claude
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13ef875
simd: scatter-or and group-sum kernels accumulate into out, never zero it
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simd: eq_u32_via_to_mask — an equality predicate read through a foreign key
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simd masking ops: address-only vocabulary, survival conditions, key-run distinct fold
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simd: masked_key_run_count_u32 refuses a lane out of key order
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simd: the run fold's precondition is ORDER, not clustering; pin the unselected-key counterexample
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simd: doc example for KeyRunCarry::finish
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simd: masked_key_run_count_u32 refusal is transactional; ordered-lane vocabulary sweep
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d037650