Passes

Kagura is built on the LLVM New Pass Manager. Each transformation is a separate pass; you enable them individually via -kagura-<name> flags or through a JSON policy file.

Passes are grouped by purpose:

• Control Flow — flatten the CFG, inject bogus branches, split / reorder basic blocks, redirect calls.
• Data Obfuscation — encrypt strings, constants, globals, and alloca'd values.
• Anti-Analysis — detect debuggers / hooking frameworks, verify integrity, hide symbols.
• Platform-Specific — ObjC selector / class obfuscation, JNI dynamic registration, VM virtualization.
• Infrastructure — DWARF control, config loader, symbol map, audit log.

See also:

• Before / After Examples — what the IR / decompiler output actually looks like.
• Performance & Size Impact — measured overhead on a representative mobile game module.
• Pass Order — the deterministic pipeline registered via registerOptimizerLastEPCallback.
• Tuning Parameters — bcf-prob, seed, iteration counts, symbol filters.