de-rust phase-0: archive Rust LLVM backend to archive/rust-llvm-backend (RESTORE documented); defaults unaffected

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2025-11-09 01:00:43 +09:00
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# ⚠️ DEPRECATED: Legacy Rust/inkwell LLVM backend
This directory contains the historical Rust/inkwell-based LLVM backend.
- Development focus has shifted to the Python/llvmlite backend under `src/llvm_py/`.
- Keep this code for reference only. Do not extend or modify for current tasks.
- The LLVM build pipeline now prefers the llvmlite harness (`NYASH_LLVM_USE_HARNESS=1`).
If you need to reduce build time locally, consider using the harness path and
building only the core crates. See `tools/build_llvm.sh` and `tools/compare_harness_on_off.sh`.