CharlesKWON 523d3fcf2e perf(vm): in-place Plus/Minus/Mult with tInt fast path ...

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>

2026-04-18 08:16:32 +09:00

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