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Re: [stree] Committed: initial stree infrastructure, and stree versionof enumerators
- From: Mark Mitchell <mark at codesourcery dot com>
- To: Matt Austern <austern at apple dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Tue, 09 Mar 2004 02:17:48 -0800
- Subject: Re: [stree] Committed: initial stree infrastructure, and stree versionof enumerators
- Organization: CodeSourcery, LLC
- References: <95B43C22-7162-11D8-B2EB-000A95AA5E5E@apple.com>
Matt Austern wrote:
First installment of the stree work. We started with enumerators
because they're simple, and also because in some environments (e.g.
files that include Apple's Carbon.h header) there are an awful lot of
them. The goal of this work is to avoid having the compiler allocate
memory for unused declarations, and, in any real program, the vast
majority of Carbon.h enumerators are never used.
To avoid some of the communication issues that we've had with other
improvements, I want to make clear that I think that y'all should post
an informal design document with goals, implementation strategy,
justification of that strategy, etc. before merging. I'd like to see a
write-up, not just a patch. In particular, I bet I will things to say
(positive or negative!) about this approach, but I'm not going to try to
examine your preliminary patch to make a determination about that.
My initial instinct is that this is not the most high-value target, and
that the resulting additional messiness in the type system is going to
outweigh other wins. There are a lot of algorithmic mistakes in the
compiler, and I'd rather we fix them, instead of complicating the
infrastructure further to compensate for our other stupidity. :-) But,
that's all somewhat in the nature of anecdotally-reinforced hypothesis,
Thanks for working on these issues!