Method get_fn

crates/rustc_codegen_spirv/src/codegen_cx/mod.rs:777–779

(&self, instance: Instance<'tcx>)

    }

    fn get_fn(&self, instance: Instance<'tcx>) -> Self::Function {
        self.get_fn_ext(instance)
    }

    // NOTE(eddyb) see the comment on `SpirvValueKind::FnAddr`, this should
    // be fixed upstream, so we never see any "function pointer" values being