[M3devel] [M3commit] CVS Update: cm3

[Rodney M. Bates]

Tony Hosking wrote:
> Note that the front-end refuses to do any constant folding that results 
> in overflow.  Instead, it generates code that will execute at run-time. 
>  If that causes a run-time error then fine.  Similarly, the back-end 
> should never do constant folding for things that overflow.

Hmm, I didn't know that.  I think that is a very good idea.  It really
preserves language semantics, while gaining efficiency where possible.


> 
> On 29 Jan 2010, at 11:48, Jay K wrote:
> 
>> For now I'm treating the error as a warning and continuing on.
>>  
>>  - Jay
>>
>>  
>> ------------------------------------------------------------------------
>> From: hosking at cs.purdue.edu <mailto:hosking at cs.purdue.edu>
>> Date: Fri, 29 Jan 2010 10:31:35 -0500
>> To: jkrell at elego.de <mailto:jkrell at elego.de>
>> CC: m3commit at elegosoft.com <mailto:m3commit at elegosoft.com>
>> Subject: Re: [M3commit] CVS Update: cm3
>>
>> Why do you need that?
>>
>> Antony Hosking | Associate Professor | Computer Science | Purdue 
>> University
>> 305 N. University Street | West Lafayette | IN 47907 | USA
>> Office +1 765 494 6001 | Mobile +1 765 427 5484
>>
>>
>>
>>
>> On 29 Jan 2010, at 09:57, Jay Krell wrote:
>>
>>     CVSROOT: /usr/cvs
>>     Changes by: jkrell at birch. 10/01/29 09:57:33
>>
>>     Modified files:
>>     cm3/m3-sys/m3middle/src/: Target.m3 
>>
>>     Log message:
>>     in ToInt and IntI, do the conversion even if there is overflow
>>     (still returning FALSE for overflow)
>>
>>
>>
>