Phase 11 attempted to consolidate ENV snapshot overhead by:
- Adding hakmem_env_snapshot_maybe_fast() API
- Caching front_v3_snap pointer in HakmemEnvSnapshot
- Replacing separate calls with single API at call sites
Result: -8.35% regression (51.65M → 47.33M ops/s)
Root cause:
- maybe_fast() called in inline hot path functions
- ctor_mode check accumulated on every call
- Compiler optimization inhibited
- Even 2-3 instructions are expensive at high frequency
Lesson: ENV gate optimization should target gate itself, not call sites.
All changes rolled back. Phase 11 FROZEN.
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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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