Asaad Mohammed

> The `popcnt` instruction seems to have been introduced with nehalem (https://github.com/bytecodealliance/wasmtime/blob/5c1d728e3ae8ee7aa329e294999a2c3086b21676/cranelift/codegen/meta/src/isa/x86/settings.rs#L108-L111). Your processor predates this introduction. > > You could try disabling the nehalem preset here: > > https://github.com/bjorn3/rustc_codegen_cranelift/blob/341a4863fabe8c67b1b72c6d3183ee824878f950/src/lib.rs#L338...