[bbatha]

> I wonder if how much value there is in skipping LLVM in favor of having a JIT optimized linked in instead. For release builds it would get you a reasonable proxy if it optimized decently while still retaining better debugability.

Rust is in the process of building out the cranelift backend. Cranelift was originally built to be a JIT compiler. The hope is that this can become the debug build compiler.

https://github.com/rust-lang/rustc_codegen_cranelift

[actualwitch]

I recently tried using cranelift on a monorepo with a bunch of crates, and it is nothing short of amazing. Nothing broke and workspace build time went from a minute and a half to a half of a second!

[lsuresh]

Was this for a release build or a debug build?

[actualwitch]

Cranelift is only intended for debug builds, there is nothing stopping you from using it for release builds but — to the best of my knowledge — you get noticeably degraded runtime performance if you go that way.