in terms of performance it will always be ambiguous as implementations are hard to compare across languages, however they use llvm as an alternative to support architectures as they build out their native compiler. in the transition for x86_64 they were seeing up to 70% increase in compile speeds. its still ambiguous as its dependent on their implementation of llvm, though its such a large increase it is still meaningful.

but i say all this as a rust and zig advocate where i would happily choose either over the the majority of alternatives.

[–] BB_C@programming.dev 1 points 10 hours ago

exposed ABI

ABI is not something that gets "exposed" or not.

it will always be ambiguous as implementations are hard to compare across languages

Correct.

in the transition for x86_64 they were seeing up to 70% increase in compile speeds

And that was a part of what I was hinting at, because you get >>70% speed-up with Cranelift in most Rust projects. But in either case, faster code generation is not free lunch, hence the mention of comparable runtime performance of generated binaries.