- Add mrb_likely/mrb_unlikely macros to common.h for branch prediction
- Optimize OP_GETIDX array fast path:
- Cache RArray pointer to avoid repeated RARRAY() calls
- Single ARY_EMBED_P check instead of two (via RARRAY_LEN + RARRAY_PTR)
- Use unsigned comparison for bounds check
- Add branch prediction hints for common cases
- Convert switch statement to if-else chain for better branch prediction
Benchmark shows ~3% improvement for array read operations.
Co-authored-by: Claude <noreply@anthropic.com>
Yukihiro "Matz" Matsumoto
a07d9fb62c