CLIR: Liveness-Driven, Structure-Aware Fuzzing for the Cranelift Compiler

arXiv 2606.26977·medium signal

Cranelift — a fast compiler backend originally for WebAssembly and now an experimental Rust backend with multi-architecture support (x86-64, AArch64, s390x, RISCV64) — is gaining importance for its compilation speed versus LLVM. CLIR is a liveness-driven, structure-aware fuzzer targeting it. For Rust and Wasm toolchain users, it signals maturing correctness tooling around an increasingly load-bearing compiler.