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Avoid hashing in operator products - #276
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Operator products, `tr`, `apply`, `product` and `transpose` match the few paired names with linear scans instead of building sets and dictionaries. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
mtfishman
enabled auto-merge (squash)
October 27, 2026 13:31
Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #276 +/- ##
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+ Coverage 82.36% 82.60% +0.24%
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Files 21 21
Lines 1474 1466 -8
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- Hits 1214 1211 -3
+ Misses 260 255 -5
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Summary
Every product involving a
NamedTensorOperatorpaired its output and input names by hashing them into sets and aDict, about 1 µs and 26 allocations per product. Matching the few names by linear scans brings that under 100 ns, andtrand a few other operator functions get the same treatment.