Message from discussion
CPS and optimization
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From: D Herring <dherr...@at.tentpost.dot.com>
Newsgroups: comp.lang.lisp
Subject: Re: CPS and optimization
Date: Wed, 10 Nov 2010 01:34:01 -0500
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On 11/09/2010 10:53 PM, Peter Keller wrote:
> I know of the correspondance between CPS and SSA forms, is that what I
> would apply here? I'd convert the CPS form to SSA basic blocks, perform
> the optimization operations upon it, then convert it back to CPS?
Rather each SSA optimization should have an equivalent optimization
for "well behaved" CPS forms. The well-behaved restriction comes from
CPS allowing some things that are not possible in SSA.
[OT] If you do convert to SSA, I'd just throw the code through LLVM.
It seems to me that low-level optimizations (e.g. local scheduling,
opcode selection, and register allocation) are fairly well solved
whereas higher-level optimizations (e.g. profiling-driven inlining,
fast-path generation, and data-structure selection) need more
interaction with the programmer and provide interesting new opportunities.
- Daniel