I'm starting to feel like a broken record, but here we go.

Some things to think about:

1) Why do you want this? The JVM GC and JIT are some of the fastest (if not
the fastest) on the planet, so performance will never be a good reason to
do this.
2) Do you want something like eval? As far as I can tell Swift is
statically compiled. Only XCode has the ability to modify a program on the
fly.
3) Clojure is highly polymorphic and dynamically typed. Walk the source
code for first  and next and you'll find something like 3-4 polymorphic
calls involved in something as simple as (doseq [x (range 100)]), per item.
4) I have yet to see performance numbers for Swift....how fast/slow is it
compared to other languages?

To put this all into perspective, I once translated LazySeq to C++ and ran
some code (with a GC) that performed something like (doall (range 100000)).
The result was about 10x slower than Clojure on the JVM. So simply running
something in C++/LLVM doesn't mean that you'll even get close to the
performance of the JVM.

Memory constrained systems might benefit from a LLVM Clojure. In addition
there's room for improvement with the JVM's horrible warmup times. Python
will boot instantly on most systems while the Clojure REPL takes about a
minute to boot on the RPi. But aside form that, I can't see much of a
point.

If you want something like this there's always (
https://github.com/galdolber/clojure-objc)

Timothy




On Wed, Jun 4, 2014 at 7:20 AM, Greg Knapp <virtual.g...@gmail.com> wrote:

> The recent release of Swift made me revisit Clojure on LLVM. This post
> from 2010
> <https://groups.google.com/d/msg/clojure/KrwtTsdYZ8I/Qf8PSMeoZCUJ>
> suggests it's a very difficult task.
>
> Swift would make this job easier? As with ClojureScript, generate Swift
> code / provide interop and Clojurian's can produce native iOS apps?
>
> Perhaps the biggest hole to be filled would be tooling (Xcode is not
> Clojure/Lisp friendly? i.e. no playground support)
>
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zero–they had no way to indicate successful termination of their C
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