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hakorune/docs/development/current
nyash-codex 78f3d6f8da docs: Phase 189 ChatGPT Architectural Inquiry - Select Instruction MIR Bridge
Add comprehensive inquiry document for Select instruction conversion strategy.
This document outlines the architectural challenge and requests ChatGPT guidance on:

1. Clean conversion strategy (Select → Branch + Then/Else + Phi)
2. Block creation and management patterns
3. ValueId continuity across conversion boundaries
4. Code organization approach (where should conversion logic live?)
5. Performance and optimization implications
6. Testing strategy for Select expansion
7. Future extensibility for complex patterns

## Context

- Phase 188-Impl-3 implementation is COMPLETE 
- All JoinIR lowering for Pattern 3 is functional
- All infrastructure is in place (routing, boundary mapping, etc.)
- BLOCKER: Select instruction cannot be converted to MIR yet

The inquiry provides:
- Executive summary of current status
- Technical challenge explanation with example conversions
- 7 detailed questions for architectural guidance
- References to existing similar code patterns in codebase
- Test case details and success criteria
- Proposed Phase 189 implementation phases

## Status

- Phase 188-Impl-1 (Pattern 1):  COMPLETE - loop_min_while.hako working
- Phase 188-Impl-2 (Pattern 2):  COMPLETE - joinir_min_loop.hako working
- Phase 188-Impl-3 (Pattern 3): 🔄 INFRASTRUCTURE COMPLETE - awaiting Phase 189 for MIR bridge
- Phase 189: This inquiry document provides foundation for implementation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-12-05 16:05:32 +09:00
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