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Date: Sat, 31 May 2014 19:34:15 -0700 (PDT)
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Subject: Re: ANN: GCC 4.9.0 (2014) for Max OS X Mavericks
From: "Dan'l Miller" <optikos@verizon.net>
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Xref: news.eternal-september.org comp.lang.ada:20098
Date: 2014-05-31T19:34:15-07:00
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On Saturday, May 31, 2014 6:31:44 PM UTC-5, Bill Findlay wrote:
> On 31/05/2014 23:44 "Pascal Obry" wrote:
> > At least the backend is GCC 4.9 instead of GCC 4.7.
> 
> Thanks.  Is there a list somewhere of the differences that implies?

http://gcc.gnu.org/gcc-4.9/changes.html
http://gcc.gnu.org/gcc-4.8/changes.html

For the backend (not necessarily restricted to the feature-set exercised by the Ada front-end), please look especially at the following sections in each:
Caveats
General Optimizer Improvements (and Changes)
New Targets and Target Specific Improvements