[M3devel] and move to gcc 4.7?

[Jay K]

 > quality and performance of the new one though, just to avoid regression.

Well..the main "quality" is portability.Much is being potentially sacrificed for it.

There are potential other improvements, but also potential regressions.

Optimization might be better, i.e. by not using gcc, or worse, i.e. by going via C.

Compiler performance is likely worse, due to the extra text production and parsing.It seems ok to me. I've been using a while. But not great. Skipping the .mc/m3cg file production helped a lot.

Debugging will be better on Darwin and NT -- where currently we have no type info, I hope to add significant typing.

"Ease of distribution" will take a step forward, but it isn't yet where I want it to be.You know, you just want tar xf; configure; make; make install. No need for cross builds or "unusual" prerequesites, "just" a C compiler and Bourne shell and make.

Portability will increase.Maintainability will increase.We will no longer have a motivation for "chasing" newer gcc.  (nor patches e.g. for OpenBSD)We will "automatically" port to "every" target. This is an exaggeration, but not by a lot.The "porting" will work will decrease. Porting work will further decrease when we have cooperative suspend.

 - Jay


> Date: Wed, 6 Feb 2013 09:34:09 +0100
> From: wagner at elegosoft.com
> To: jay.krell at cornell.edu
> CC: m3devel at elegosoft.com
> Subject: Re: [M3devel] and move to gcc 4.7?
> 
> On Wed, 6 Feb 2013 08:29:03 +0000
> Jay K <jay.krell at cornell.edu> wrote:
> 
> > Olaf, things working satisfactorily for you in Hudson now for AMD64_LINUX and AMD64_FREEBSD?
> Recent builds seem to have succeeded.
> 
> > I'd like to bump m3cc/src/m3makefile up to 4.7 for AMD64_LINUX, FREEBSD. Or anything we have going decently in Hudson.Even though, granted, I'd like to remove that backend sooner rather than later anyway..AMD64_LINUX was at 4.7 but I backed it down to 4.5 today out of paranoia.
> 
> Just try it.
> 
> Before we remove the old backend, I'd like to have some validation of the
> quality and performance of the new one though, just to avoid regression.
> 
> Olaf
> -- 
> Olaf Wagner -- elego Software Solutions GmbH -- http://www.elegosoft.com
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