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GCC 4.7.0 Released

From: Richard Guenther <rguenther at suse dot de>

To: gcc at gcc dot gnu dot org

Date: Thu, 22 Mar 2012 11:22:35 +0100 (CET)

Subject: GCC 4.7.0 Released

Reply-to: gcc at gcc dot gnu dot org

Today the GCC development team celebrates the 25th anniversary of the GNU Compiler Collection. When Richard Stallman announced the first public release of GCC in 1987, few could have imagined the broad impact that it has had. It has prototyped many language features that later were adopted as part of their respective standards -- everything from "long long" type to transactional memory. It deployed an architecture-neutral automatic vectorization facility, OpenMP, and Polyhedral loop nest optimization. It has provided the toolchain infrastructure for the GNU/Linux ecosystem used everywhere from Google and Facebook to financial markets and stock exchanges. We salute and thank the hundreds of developers who have contributed over the years to make GCC one of the most long-lasting and successful free software projects in the history of this industry. As a special present we have prepared the release of GCC 4.7.0 which continues the series of free software high-quality industry-standard compilers. GCC 4.7.0 is a major release, containing substantial new functionality not available in GCC 4.6.x or previous GCC releases. GCC 4.7 features support for software transactional memory on selected architectures. The C++ compiler supports a bigger subset of the new ISO C++11 standard such as support for atomics and the C++11 memory model, non-static data member initializers, user-defined literals, alias-declarations, delegating constructors, explicit override and extended friend syntax. The C compiler adds support for more features from the new ISO C11 standard. GCC now supports version 3.1 of the OpenMP specification for C, C++ and Fortran. The link-time optimization (LTO) framework has seen improvements with regards to scalability, stability and resource needs. Inlining and interprocedural constant propagation have been improved. GCC 4.7 now supports various new GNU extensions to the DWARF debugging information format, like entry value and call site information, a typed DWARF stack and a more compact macro representation. Extending the widest support for hardware architectures in the industry, GCC 4.7 gains support for Adapteva's Epiphany processor, National Semiconductor's CR16, and TI's C6X as well as Tilera's TILE-Gx and TILEPro families of processors. The x86 family support has been extended by the Intel Haswell and AMD Piledriver architectures. ARM has gained support for the Cortex-A7 family. See http://gcc.gnu.org/gcc-4.7/changes.html for more information about changes in GCC 4.7. This release is available from the FTP servers listed here: http://www.gnu.org/order/ftp.html The release is in gcc/gcc-4.7.0/ subdirectory. If you encounter difficulties using GCC 4.7, please do not contact me directly. Instead, please visit http://gcc.gnu.org for information about getting help. Driving a leading free software project such as GNU Compiler Collection would not be possible without support from its many contributors. Not to only mention its developers but especially its regular testers and users which contribute to its high quality. The list of individuals is too large to thank individually!