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Date: Tue, 6 Apr 1999 09:53:13 +0200
From: Xavier Leroy <Xavier.Leroy@inria.fr>
To: Alexey Nogin <nogin@cs.cornell.edu>
Cc: caml-list@inria.fr, Jason Hickey <jyh@cs.cornell.edu>,
        Alexei Kopylov <kopylov@cs.cornell.edu>,
        Paul Stodghill <stodghil@cs.cornell.edu>
Subject: Re: Upgrade from OCaml 2.01 to OCaml 2.02 made things _slower_!
References: <19990305114112.34610@pauillac.inria.fr> <36E73321.D37B49F6@CS.Cornell.EDU> <19990311104442.30284@pauillac.inria.fr> <37096C42.1659E46B@CS.Cornell.EDU>
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In-Reply-To: <37096C42.1659E46B@CS.Cornell.EDU>; from Alexey Nogin on Mon, Apr 05, 1999 at 10:06:59PM -0400
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> I tried backing up allocation coalescing (by backing up changes 1.8
> -> 1.9 and 1.10 -> 1.11 of asmcomp/senectgen.ml), but that only
> increased the number of memory accesses.

I'm not surprised that allocation coalescing reduces the number of
memory accesses, indeed.

> Do you have another guess
> what else was changed between 2.01 and 2.02 that could have caused
> the increase of the number of memory accesses?

Some library functions (on which your code may depend) have been
reimplemented differently, most notably Printf.sprintf.  That's all I
can see.  

- Xavier Leroy