Brandon Lucas bba94b534d feat: add FBIP debug counters to prove optimization effectiveness ...

Add runtime counters tracking FBIP reuse vs copy operations:
- lux_fbip_reuse_count: incremented when rc=1 allows in-place mutation
- lux_fbip_copy_count: incremented when rc>1 forces allocation

Output now shows both memory stats and FBIP stats:
  [RC] No leaks: 13 allocs, 13 frees
  [FBIP] 3 reuses, 0 copies

Rename test_no_fbip.lux to test_ownership_transfer.lux to better
reflect that ownership transfer enables FBIP even with aliases.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-02-14 14:52:35 -05:00

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