SYX backends (VM, LLVM, Wasm)

SYX feeds three execution / emit backends from one MIR pipeline. LLVM is the only native AOT backend.

Backend	Typical command	Role
Stack bytecode VM	syx run	Fast iteration / default interpret path
LLVM native AOT	syx build --native	Native machine code
WebAssembly	syx build --wasm / syx run --wasm	Wasm emit and run

.sy → … → MIR ─┬→ VM bytecode
               ├→ LLVM object / native link
               └→ Wasm

Choosing a backend

• Day-to-day learning and scripts: VM (syx run)
• Native binaries: LLVM AOT (needs the native/LLVM toolchain — see Install)
• Browser / Wasm hosts: --wasm

Backend parity and debugging notes live under Compiler Internals (Backend Parity, Backend Debugging).

Related

• What is SYX?
• Capabilities — honest feature boundaries
• Quick Guide — build flags and projects