From: Alain Frisch <alain.frisch@lexifi.com>
To: Nicolas Ojeda Bar <nojb@math.harvard.edu>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] reference cells
Date: Mon, 31 Jan 2011 19:12:46 +0100 [thread overview]
Message-ID: <4D46FB9E.5040805@lexifi.com> (raw)
In-Reply-To: <476C4EB3-59D2-4756-927C-C1697E7AE4D8@math.harvard.edu>
On 01/31/2011 05:29 PM, Nicolas Ojeda Bar wrote:
> I am translating an imperative language into Ocaml. Right now I am
> translating mutable variables into ref cells. Will they be optimized
> when I compile the corresponding Ocaml program? Or will they be heap
> allocated? If this is the case, I will have to translate my language
> into some sort of SSA form before, and I would like to avoid that.
Mutable variables which are used only internally in a function's body
are not heap allocated.
If you write:
let r = ref e0 in e1
and r only appears in e1 under the form:
r := ...
!r
and not under a local abstraction, then the reference is kept in a local
variable.
You can use the -dlambda switch to the compilers and toplevel to see that.
-- Alain
next prev parent reply other threads:[~2011-01-31 18:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-31 16:29 Nicolas Ojeda Bar
2011-01-31 16:36 ` Michael Ekstrand
2011-01-31 16:46 ` Guillaume Yziquel
2011-02-04 11:49 ` David Baelde
2011-02-04 12:30 ` Guillaume Yziquel
2011-01-31 18:12 ` Alain Frisch [this message]
2011-02-02 19:38 ` Jon Harrop
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