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docs: Add Phase 4-Step3 completion report

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Document Config Box implementation results:
- Performance: +2.7-4.9% (50.3 → 52.8 M ops/s)
- Scope: 1 config function, 2 call sites
- Target: Partially achieved (below +5-8% due to limited scope)

Updated CURRENT_TASK.md:
- Marked Step 3 as complete ✅
- Documented actual results vs. targets
- Listed next action options

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>
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Moe Charm (CI)
2025-11-29 12:20:34 +09:00
parent e0aa51dba1
commit 9bc26be3bb
2 changed files with 355 additions and 10 deletions
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32
CURRENT_TASK.md
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@ -41,16 +41,21 @@
---
### Step 3: Front Config Box (Expected: +5-8%)
- **Duration**: 2-3 days
### Step 3: Front Config Box ✅ COMPLETE (+2.7-4.9%)
- **Duration**: ~~2-3 days~~ **Completed: 2025-11-29**
- **Risk**: Low
- **Target**: 68-75M → 73-83M ops/s (cumulative +20-33%)
- **Actual**: **50.3M → 52.8M ops/s (+2.7-4.9%, limited scope)** ✓
**Deliverables**:
1. `core/box/tiny_front_config_box.h` - Compile-time config management
2. Replace runtime checks with `TINY_FRONT_*_ENABLED` macros
3. Build flag: `HAKMEM_TINY_FRONT_PGO=1`
4. Final PGO optimization + full benchmark suite
1. ✅ `core/box/tiny_front_config_box.h` - Compile-time config management
2. ✅ Replace runtime checks with `TINY_FRONT_*_ENABLED` macros (2 call sites)
3. ✅ Build flag: `HAKMEM_TINY_FRONT_PGO=1`
4. ⏸️ Final PGO optimization (PGO still disabled due to build issues)
5. ✅ Completion report: `PHASE4_STEP3_COMPLETE.md`
**Note**: Achieved +2.7-4.9% (below +5-8% target) due to limited scope (1 function, 2 call sites).
Full target achievable by expanding to all config functions (6+ remaining).
---
@ -68,7 +73,7 @@
---
## Current Status: Step 2 Complete ✅ → Ready for Step 3 or PGO Fix
## Current Status: All 3 Steps Complete ✅ → Next: PGO Fix or Expand Config Box
**Completed (Step 1)**:
1. ✅ PGO Profile Collection Box implemented (+6.25% improvement with PGO)
@ -83,10 +88,17 @@
4. ✅ Benchmark: **+7.3% improvement** (53.3 → 57.2 M ops/s, without PGO)
5. ✅ Completion report: `PHASE4_STEP2_COMPLETE.md`
**Completed (Step 3)**:
1. ✅ Front Config Box (compile-time config, dead code elimination)
2. ✅ Build flag: `HAKMEM_TINY_FRONT_PGO=1`
3. ✅ Config macros: `TINY_FRONT_*_ENABLED` (2 call sites updated)
4. ✅ Benchmark: **+2.7-4.9% improvement** (50.3 → 52.8 M ops/s)
5. ✅ Completion report: `PHASE4_STEP3_COMPLETE.md`
**Next Actions (Choose One)**:
- **Option A: Step 3 (Front Config Box)** - Target +5-8% (57.2 → 60-62 M ops/s)
- **Option B: Fix PGO** - Resolve build issues, re-enable PGO workflow
- **Option C: Both in parallel** - Step 3 development + PGO fix separately
- **Option A: Expand Config Box** - Replace 6+ remaining config functions (+2-3% more expected)
- **Option B: Fix PGO** - Resolve build issues, re-enable PGO workflow (+6% expected from Step 1)
- **Option C: Mark Phase 4 Complete** - Move to next phase or final optimization
**Design Reference**: `docs/design/PHASE4_TINY_FRONT_BOX_DESIGN.md` (already complete)