Apply the sp-rewrite shape to the three binary arithmetic ops. The
tInt==tInt fast branch reads scalar directly (skips the AsNumInt
method) so the hot path is int64 ops + an overflow check; mixed-type
branches keep AsNumDouble unchanged.
PRG tight loops (FOR counter, SUM accumulators outside SQL aggregate
path) skip one cachedNil store and two bounds-check sequences per op.
Verification
- go test ./... ALL PASS
- FiveSql2 test_sql1999 43/43
- tests/compat_harbour 56/56
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
CharlesKWON
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