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List: cfe-commits
Subject: Re: [cfe-commits] r61444 - /cfe/trunk/lib/Headers/float.h
From: Chris Lattner <clattner () apple ! com>
Date: 2008-12-27 1:37:18
Message-ID: 44A8A802-25AA-4B49-8B9A-92211DEC5C76 () apple ! com
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On Dec 26, 2008, at 3:00 PM, Eli Friedman wrote:
> On Fri, Dec 26, 2008 at 2:48 PM, Anders Carlsson <andersca@mac.com>
> wrote:
>>>
>>> There's not much to say... I think we were planning at one point
>>> to do
>>> this a bit differently so that we didn't have to define so many
>>> identifiers on initialization, but this works.
>>>
>>
>> Oh, how?
>
> Roughly, define a new function, __builtin_limit(), or something like
> that, which the preprocessor expands, that allows queries for these
> sorts of things. That way, we can get rid of the mess of
> DefineBuiltinMacro calls in Preprocessor.cpp. I suppose it's not a
> particularly high priority, though.
Yep, something like __builtin_numeric_property("whatever") could be
used. This reduces load on the identifier table, and could be
extensible to other related things. I agree that this isn't a super
high priority though :)
-Chris
[Attachment #5 (text/html)]
<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; \
-webkit-line-break: after-white-space; "><div><div>On Dec 26, 2008, at 3:00 PM, Eli \
Friedman wrote:</div><blockquote type="cite"><div>On Fri, Dec 26, 2008 at 2:48 PM, \
Anders Carlsson <<a href="mailto:andersca@mac.com">andersca@mac.com</a>> \
wrote:<br><blockquote type="cite"><blockquote type="cite"><font \
class="Apple-style-span" color="#006312"><span class="Apple-style-span" \
style="-webkit-text-stroke-width: -1;"><br></span></font>There's not much to say... I \
think we were planning at one point to do<br></blockquote></blockquote><blockquote \
type="cite"><blockquote type="cite">this a bit differently so that we didn't have to \
define so many<br></blockquote></blockquote><blockquote type="cite"><blockquote \
type="cite">identifiers on initialization, but this \
works.<br></blockquote></blockquote><blockquote type="cite"><blockquote \
type="cite"><br></blockquote></blockquote><blockquote \
type="cite"><br></blockquote><blockquote type="cite">Oh, \
how?<br></blockquote><br>Roughly, define a new function, __builtin_limit(), or \
something like<br>that, which the preprocessor expands, that allows queries for \
these<br>sorts of things. That way, we can get rid of the mess \
of<br>DefineBuiltinMacro calls in Preprocessor.cpp. I suppose it's not \
a<br>particularly high priority, though.<br></div></blockquote></div><br><div>Yep, \
something like __builtin_numeric_property("whatever") could be used. This \
reduces load on the identifier table, and could be extensible to other related \
things. I agree that this isn't a super high priority though \
:)</div><div><br></div><div>-Chris</div></body></html>
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