Fwd: GCC 4.5.0 Released

[Andy Lester]

I'm going to download and install tonight.

Begin forwarded message:

> From: mitchell at codesourcery.com (Mark Mitchell)
> Date: April 18, 2010 6:01:49 PM CDT
> To: gcc-announce at gcc.gnu.org
> Cc: gcc at gcc.gnu.org
> Subject: GCC 4.5.0 Released
> Reply-To: mark at codesourcery.com
> 
> 
> The Free Software Foundation and the GNU Compiler Collection (GCC)
> development team have released GCC 4.5.0.  This release is a major
> upgrade to the compilers, with a particular focus on the performance
> of the generated code.  The developers have measured performance
> improvements of 5% to 10% on high-performance computing benchmarks.
> (Of course, results vary depending on choice of CPU, benchmark, and
> optimization options.)
> 
> GCC 4.5.0 is now capable of "link-time optimization".  Traditionally,
> most C and C++ compilers (including GCC) have only been able to
> optimize within a single source file or "module".  GCC was therefore
> unable to take advantage of optimization opportunities that required
> knowledge about multiple modules.  This limitation has been removed in
> GCC 4.5.0.  This optimization can provide significant increases in
> performance and equally significant reductions in code size.
> 
> In addition, GCC 4.5.0 has improved loop optimization infrastructure.
> This infrastructure, based on an advanced "polyhedral" model for
> optimization, allows GCC to perform more advanced loop optimizations.
> In the future, this infrastructure will be tuned and used more heavily.
> 
> GCC 4.5.0 also features improvements for a wide variety of specific
> architectures, including support for recent CPUs using the ARM, AVR,
> ColdFire, MIPS, Power, SuperH, and x86 architectures.  GCC also
> generates better debug information for optimized code, including
> information about the value of variables that have been optimized
> away.  And, of course, a wide variety of defects in all parts of the
> compiler (ranging from language conformance to code-generation) have
> been corrected.
> 
> Refer to gcc.gnu.org:
> 
>  http://gcc.gnu.org/gcc-4.5/changes.html
> 
> for more information about this release.
> 
> GCC 4.5.1, with corrections for any critical defects reported in GCC
> 4.5.0, is expected in July, 2010.
> 
> As always, a vast number of people contributed to this GCC release --
> far too many to thank individually!  
> 
> --
> Mark Mitchell
> CodeSourcery
> mark at codesourcery.com
> (650) 331-3385 x713
> 

--
Andy Lester => andy at petdance.com => www.theworkinggeek.com => AIM:petdance