GCC news and announcements

More current news, or some (older) GCJ news.

Heterogeneous Systems Architecture support [2016-01-27]
Heterogeneous Systems Architecture 1.0 support was added to GCC, contributed by Martin Jambor, Martin Liška and Michael Matz from SUSE.
GCC 5.3 released [2015-12-04]
GCC 5.2 released [2015-07-16]
GCC 4.9.3 released [2015-06-26]
GCC 4.8.5 released [2015-06-23]
GCC 5.1 released [2015-04-22]
MIPS Release 6 architecture support [2015-01-20]
Support for MIPS Release 6 (r6) has been contributed by Imagination Technologies.
OpenMP 4.0 offloading support in GCC [2015-01-14]
OpenMP 4.0 offloading support was added to GCC. Contributed by Jakub Jelinek (Red Hat), Bernd Schmidt and Thomas Schwinge (CodeSourcery), Andrey Turetskiy, Ilya Verbin and Kirill Yukhin (Intel).
Intel Skylake Server AVX-512 extensions support [2015-01-14]
New ISA extensions support AVX-512{BW,DQ,VL,IFMA,VBMI} was added to GCC. That includes inline assembly support, new intrinsics, and basic autovectorization. Code was contributed by Sergey Guriev, Alexander Ivchenko, Maxim Kuznetsov, Sergey Lega, Anna Tikhonova, Ilya Tocar, Andrey Turetskiy, Ilya Verbin, Kirill Yukhin and Michael Zolotukhin of Intel, Corp.
VISIUMcore support [2015-01-06]
A port for the VISIUMcore architecture has been contributed by AdaCore on behalf of Controls and Data Services.
GCC 5 C++14 language feature-complete [2014-12-23]
Support for all C++14 language features has been added to the development sources for GCC, and will be available when GCC 5 is released next year. Contributed by Jason Merrill, Braden Obrzut, Adam Butcher, Edward Smith-Rowland, and Jakub Jelinek.
GCC 4.8.4 released [2014-12-19]
JIT support in GCC: libgccjit [2014-11-11]
GCC can now be built as a shared library, and embedded inside interpreters and other language runtimes, for Just-In-Time generation of machine code. Contributed by David Malcolm (Red Hat).
GCC 4.9.2 released [2014-10-30]
Cilk Plus support in GCC [2014-09-02]
Complete support for Cilk Plus features was added to GCC. Contributed by Jakub Jelinek, Aldy Hernandez, Balaji V. Iyer and Igor Zamyatin.
New GCC version numbering scheme announced [2014-08-13]
GCC 4.9.1 released [2014-07-16]
Fortran IEEE intrinsic modules [2014-07-05]
The Fortran compiler (gfortran) has gained support for the IEEE intrinsic modules specified by the Fortran 2003 and Fortran 2008 standards. The code was contributed by François-Xavier Coudert of CNRS.
OpenMP v4.0 [2014-06-30]
An implementation of the OpenMP v4.0 parallel programming interface for Fortran has been added and is going to be available in the upcoming GCC 4.9.1 release.
GCC 4.7.4 released [2014-06-12]
ACM SIGPLAN Programming Languages Software Award [2014-06-10]
GCC 4.8.3 released [2014-05-22]
GCC 4.9.0 released [2014-04-22]
GCC Google Summer of Code 2014 [2014-02-24]
GCC has been accepted as a Google Summer of Code 2014 project. Students, mentors and project ideas welcome!
Intel AVX-512 support [2014-02-17]
Intel AVX-512 support was added to GCC. That includes inline assembly support, new registers and extending existing ones, new intrinsics, and basic autovectorization. Code was contributed by Sergey Guriev, Alexander Ivchenko, Maxim Kuznetsov, Sergey Lega, Anna Tikhonova, Ilya Tocar, Andrey Turetskiy, Ilya Verbin, Kirill Yukhin and Michael Zolotukhin of Intel, Corp.
Altera Nios II support [2013-12-31]
A port for Altera Nios II has been contributed by Mentor Graphics.
Toolchain Build Robot [2013-11-24]
The Build Robot is mass-compiling GCC (stage1 only) regularly, catching build errors early.
Andes NDS32 support [2013-10-31]
A port for nds32, the 32-bit architecture of AndesCore families, has been contributed by Andes Technology Corporation.
GCC 4.8.2 released [2013-10-16]
OpenMP v4.0 [2013-10-11]
An implementation of the OpenMP v4.0 parallel programming interface for so far C and C++ has been added. Code was contributed by Jakub Jelinek, Aldy Hernandez, Richard Henderson of Red Hat, Inc. and Tobias Burnus.
C++11 <regex> support [2013-10-03]
Regular expression support in libstdc++-v3 is now available.
Synopsys Designware ARC support [2013-10-01]
A port for Synopsys Designware ARC has been contributed by Embecosm and Synopsys Inc.
TI MSP430 support [2013-09-12]
A port for the TI MSP430 has been contributed by Red Hat Inc.
The Vtable Verification Feature is now in GCC [2013-09-08]
The vtable verification branch has been merged into trunk. This work was contributed by Caroline Tice, Luis Lozano and Geoff Pike of Google, and Benjamin Kosnik of Red Hat.
Twitter and Google+ accounts [2013-08-08]
GCC and the GNU Toolchain Project now have accounts on Twitter and Google+ to help developers stay informed of progress.
IBM POWER8 support [2013-07-15]
Support for the POWER8 processor has been contributed by IBM. This includes new VSX, HTM and atomic instructions, new intrinsics, and scheduling improvements. Little Endian support also has been enhanced, including control over vector element endianness.
GCC 4.8.1 released [2013-05-31]
GCC 4.6.4 released [2013-04-12]
GCC 4.7.3 released [2013-04-11]
GCC 4.8.1 will be C++11 feature-complete [2013-04-01]
Support for C++11 ref-qualifiers was added to the GCC 4.8 branch, making G++ the first C++ compiler to implement all the major language features of the C++11 standard. This functionality will be available in GCC 4.8.1.
GCC 4.8.0 released [2013-03-22]
GCC internals documentation [2013-01-23]
The GCC Resource Center at IITB is providing documentation, tutorials and videos about GCC internals with support from the Government of India.
ARM AArch64 support [2012-10-24]
A port for AArch64, the 64-bit execution state in the ARMv8 architecture, has been contributed by ARM Ltd.
IBM zEnterprise EC12 support [2012-10-10]
Support for the latest release of the System z mainframe zEC12 has been added to the architecture back end. This work was contributed by Andreas Krebbel of IBM.
GCC 4.7.2 released [2012-09-20]
GCC now uses C++ as its implementation language [2012-08-14]
The cxx-conversion branch has been merged into trunk. This switches GCC's implementation language from C to C++. Additionally, some data structures have been re-implemented in C++ (more details in the merge announcement). This work was contributed by Lawrence Crowl and Diego Novillo of Google.
GCC 4.5.4 released [2012-07-02]
GCC 4.7.1 released [2012-06-14]
GCC 4.7.0 released [2012-03-22]
GCC 4.4.7 released [2012-03-13]
GCC 4.6.3 released [2012-03-01]
CR16 processor support [2012-02-02]
A port for National Semiconductor's CR16 processor has been contributed by Sumanth Gundapaneni and Jayant Sonar of KPIT Cummins.
TILE-Gx and TILEPro processor support [2012-02-14]
Ports for the TILE-Gx and TILEPro families of processors have been contributed by Walter Lee from Tilera.
Atomic memory model support [2011-11-06]
C++11/C11 memory model support has been added through a new set of built-in __atomic functions. Code was contributed by Andrew MacLeod, Richard Henderson, and Aldy Hernandez, all of Red Hat, Inc.
GNU Tools Cauldron 2012 [2011-11-18]
IUUK (Computer Science Institute, Charles University), CE-ITI (Institute for Theoretical Computer Science) and Google are organizing a workshop for GNU Tools developers. The workshop will be held in July 2012 at Charles University, Prague.
Transactional memory support [2011-11-15]
An implementation of the ongoing transactional memory standard has been added. Code was contributed by Richard Henderson, Aldy Hernandez, and Torvald Riegel, all of Red Hat, Inc. The project was partially funded by the Velox project. This feature is experimental and is available for C and C++ on selected platforms.
POWER7 on the GCC Compile Farm [2011-11-10]
IBM has donated a 64 processor POWER7 machine (3.55 GHz, 64 GB RAM) to the GCC Compile Farm project. Hosting is donated by the OSU Open Source Lab.
Epiphany processor support [2011-11-03]
A port for Adapteva's Epiphany multicore processor has been contributed by Embecosm.
GCC 4.6.2 released [2011-10-26]
OpenMP v3.1 [2011-08-02]
An implementation of the OpenMP v3.1 parallel programming interface for C, C++ and Fortran has been added. Code was contributed by Jakub Jelinek of Red Hat, Inc. and Tobias Burnus.
TI C6X processor support [2011-07-15]
A port for the TI C6X family of processors has been contributed by CodeSourcery.
GCC 4.3.6 released [2011-06-27]
GCC 4.6.1 released [2011-06-27]
GCC 4.5.3 released [2011-04-28]
GCC 4.4.6 released [2011-04-16]
GCC at Google Summer of Code [2011-04-04]
GCC has been accepted to Google's Summer of Code 2011. We are currently accepting student applications.
GCC 4.6.0 released [2011-03-25]
Objective-C enhanced significantly [2011-01-11]
GCC 4.6 will support many new Objective-C features, such as declared and synthesized properties, dot syntax, fast enumeration, optional protocol methods, method/protocol/class attributes, class extensions and a new GNU Objective-C runtime API. This was contributed by Nicola Pero and Iain Sandoe, with support from Mike Stump.
December 16, 2010
GCC 4.5.2 has been released.
December 2, 2010
GCC 4.6 will support the Go programming language. The new frontend was contributed by Ian Lance Taylor at Google.
November 16, 2010
GCC 4.6 will include the libquadmath library, which provides quad-precision mathematical functions on targets supporting the __float128 datatype. The library is used to provide the REAL(16) type in GNU Fortran on such targets. It has been contributed by François-Xavier Coudert.
October 1, 2010
GCC 4.4.5 has been released.
September 28, 2010
Our old Bugzilla instance has been upgraded to the latest release 3.6.2, bringing a better user experience and a new and powerful API for external tools. The upgrade has been done by Frédéric Buclin of the Bugzilla project at Mozilla.
September 28, 2010
Support has been added for the Xilinx MicroBlaze softcore processor target by Michael Eager, Eager Consulting.
July 31, 2010
GCC 4.5.1 has been released.
May 22, 2010
GCC 4.3.5 has been released.
April 29, 2010
GCC 4.4.4 has been released.
April 14, 2010
GCC 4.5.0 has been released.
January 26, 2010
Kaveh Ghazi has integrated GCC with the MPC library. As of the upcoming GCC 4.5.0 release this library will be required to build GCC. Using MPC allows more effective and accurate complex number compile-time optimizations.
January 25, 2010
An experimental profile mode has been added. This is an implementation of many C++ Standard library constructs with an additional analysis layer that gives performance improvement advice based on recognition of suboptimal usage patterns. Code was contributed by Silvius Rus, Lixia Liu, and Changhee Jung with the assistance of Benjamin Kosnik, Paolo Carlini, and Jonathan Wakely.
January 21, 2010
GCC 4.4.3 has been released.
October 26, 2009
Support has been added for the Renesas RX processor (RX) target by Red Hat, Inc.
October 15, 2009
GCC 4.4.2 has been released.
October 3, 2009
The LTO branch has been merged into trunk. The next release of GCC will feature a new whole-program optimizer, able to perform interprocedural optimizations across different files, even if they are written in different languages.
August 4, 2009
GCC 4.3.4 has been released.
July 22, 2009
GCC 4.4.1 has been released.
June 24, 2009
Support has been added for the Toshiba Media embedded Processor (MeP) target by Red Hat, Inc.
May 6, 2009
GCC can now be extended using a generic plugin framework on host platforms that support dynamically loadable objects.
April 21, 2009
GCC 4.4.0 has been released.
January 27, 2009
The GCC Steering Committee, along with the Free Software Foundation and the Software Freedom Law Center, is pleased to announce the release of a new GCC Runtime Library Exception.
This license exception has been developed to allow various GCC libraries to upgrade to GPLv3. It will also enable the development of a plugin framework for GCC. (Rationale document and FAQ)
January 24, 2009
GCC 4.3.3 has been released.
September 4, 2008
A port for the picochip target has been contributed by Picochip Designs Limited.
August 27, 2008
GCC 4.3.2 has been released.
June 6, 2008
GCC 4.3.1 has been released.
June 6, 2008
An implementation of the OpenMP v3.0 parallel programming interface for C, C++ and Fortran has been added. Code was contributed by Jakub Jelinek, Richard Henderson and Ulrich Drepper of Red Hat, Inc.
May 22, 2008
AMD Developer Central has donated two bi-quad core machines with the latest AMD Opteron 8354 "Barcelona B3" processors and 16GB of RAM to the GCC Compile Farm project for use by free software developers. Hosting is donated by INRIA Saclay.
May 19, 2008
GCC 4.2.4 has been released.
March 5, 2008
GCC 4.3.0 has been released.
February 1, 2008
GCC 4.2.3 has been released.
January 8, 2008
Jakub Jelinek, Joseph Myers, and Richard Guenther join the GCC release management team, quadrupling its head count.
January 2, 2008
Gfortran annual report for 2008
October 7, 2007
GCC 4.2.2 has been released.
September 11, 2007
An experimental parallel mode has been added. This is a parallel implementation of many C++ Standard library algorithms, like std::accumulate, std::for_each, std::transform, or std::sort, to give but four examples. Code was contributed by Johannes Singler and Leonor Frias, with the support of the University of Karlsruhe. Assisting were Felix Putze, Marius Elvert, Felix Bondarenko, Robert Geisberger, Robin Dapp, and Benjamin Kosnik of Red Hat.
July 18, 2007
GCC 4.2.1 has been released.
July 2, 2007
C interoperability support (ISO Bind C) has been added to the Fortran compiler. The code was contributed by Christopher D. Rickett of Los Alamos National Lab.
June 2, 2007
Experimental support for the upcoming ISO C++0x standard been added. Enabled with -std=gnu++0x or -std=c++0x, this offers a first look at upcoming C++0x features and will be available in GCC 4.3. Code was contributed by Douglas Gregor of Indiana University, Russell Yanofsky, Benjamin Kosnik of Red Hat and Paolo Carlini of Novell, and reviewed by Jason Merrill of Red Hat and Mark Mitchell and Nathan Sidwell of CodeSourcery.
May 13, 2007
GCC 4.2.0 has been released.
March 9, 2007
All m68k targets now support ColdFire processors and offer the choice between ColdFire and non-ColdFire libraries at configure time. There have been several other significant changes to the m68k and ColdFire support. This work was contributed by Nathan Sidwell of CodeSourcery and others.
February 13, 2007
GCC 4.1.2 has been released.
January 25, 2007
Interprocedural optimization passes have been reorganized to operate on SSA This enables more precise function analysis and optimization while inlining, significantly improving the performance of programs with high abstraction penalty. Code from ipa-branch contributed by Jan Hubicka, SUSE labs and Razya Ladelsky, IBM Haifa, was reviewed by Diego Novillo, Richard Guenther, Roger Sayle and Ian Lance Taylor.
January 8, 2007
Andrew Haley and Tom Tromey of Red Hat merged the gcj-eclipse branch to svn trunk. GCC now uses the Eclipse compiler as a front end, enabling all 1.5 language features. This merge also brings in a new, generics-enabled version of Classpath, including some new tools. All this will appear in GCC 4.3.
January 6, 2007
Kaveh Ghazi has integrated the GCC middle-end with the MPFR library, allowing more effective compile-time optimizations. As a result, this library and the GMP library are now required to build GCC.
January 5, 2007
Memory SSA, a new representation for memory expressions in SSA form has been contributed by Diego Novillo of Red Hat. This new mechanism improves compile-times and memory utilization by the compiler.
January 3, 2007
Trevor Smigiel and Andrew Pinski of Sony Computer Entertainment Inc. have contributed the Synergistic Processor Unit (SPU) port for the Cell Broadband Engine Architecture (BEA).
January 1, 2007
2006 has been a very productive year for the new Fortran frontend, with lots of improvements and fixes.
September 5, 2006
A forward propagation pass on RTL was contributed by Paolo Bonzini of University of Lugano, and Steven Bosscher while working for Novell.
May 24, 2006
GCC 4.1.1 has been released.
March 10, 2006
GCC 4.0.3 has been released.
March 9, 2006
Richard Henderson, Jakub Jelinek and Diego Novillo of Red Hat Inc, and Dmitry Kurochkin have contributed an implementation of the OpenMP 2.5 parallel programming interface for C, C++ and Fortran.
March 6, 2006
GCC 3.4.6 has been released.
February 28, 2006
GCC 4.1.0 has been released.
November 30, 2005
GCC 3.4.5 has been released.
October 26, 2005
GCC has moved from CVS to SVN for revision control.
September 28, 2005
GCC 4.0.2 has been released.
August 22, 2005
Red Hat Inc has contributed a port for the MorphoSys family.
July 20, 2005
Red Hat Inc has contributed a port for the Renesas R8C/M16C/M32C families.
July 17, 2005
GCC 4.1 stage 2 has been closed. The following projects were contributed during stage 1 and stage 2: New C Parser, LibAda GNATTools Branch, Code Sinking, Improved phi-opt, Structure Aliasing, Autovectorization Enhancements, Hot and Cold Partitioning, SMS Improvements, Integrated Immediate Uses, Tree Optimizer Cleanups, Variable-argument Optimization, Redesigned VEC API, IPA Infrastructure, Altivec Rewrite, Warning Message Control, New SSA Operand Cache Implementation, Safe Builtins, Reimplementation of IBM Pro Police Stack Detector, New DECL hierarchy. More information about these projects can be found at GCC 4.1 projects.
July 7, 2005
GCC 4.0.1 has been released.
May 18, 2005
GCC 3.4.4 has been released.
May 03, 2005
GCC 3.3.6 has been released.
April 20, 2005
GCC 4.0.0 has been released.
April 12, 2005
Diego Novillo of Red Hat has contributed a Value Range Propagation pass.
April 5, 2005
Analog Devices has contributed a port for the Blackfin processor. See the Blackfin projects page for more information and ports of binutils and gdb.
February 06, 2005
gcc.gnu.org suffered hardware failure and had to be restored from backups. We do not believe any data was lost in the CVS repository. We did lose any pending messages in the mail queue as that does not get backed up. At this time, everything should be functional except for htdig. The mailing list archives on the web site are also out of date and will be updated soon. New mail will update the archives correctly, however. If you find any other problems, please email overseers@gcc.gnu.org
January 27, 2005
GCC now has a Wiki.
November 4, 2004
GCC 3.4.3 has been released.
September 30, 2004
GCC 3.3.5 has been released.
September 9, 2004
The next major version of GCC following the current 3.4 release series will be called GCC 4.0.
September 6, 2004
GCC 3.4.2 has been released.
July 1, 2004
GCC 3.4.1 has been released.
May 13, 2004
The tree-ssa branch has been merged into mainline.
April 20, 2004
GCC 3.4.0 has been released.
February 25, 2004
The tree-ssa branch has been frozen to be incorporated into GCC 4.0.0. Tree SSA incorporates two new high-level intermediate languages (GENERIC and GIMPLE), an optimization framework for GIMPLE based on the Static Single Assignment (SSA) representation, several SSA-based optimizers and various other improvements to the internal structure of the compiler that allow new optimization opportunities that were difficult to implement before.
February 24, 2004
GCC 3.3.3 has been released.
February 6, 2004
Josef Zlomek of SUSE Labs and Daniel Berlin of IBM Research have contributed Variable Tracking. It generates more accurate debug info about locations of variables and allows debugging code compiled with -fomit-frame-pointer.
October 18, 2003
Bernardo Innocenti of Develer S.r.l. has contributed the m68k-uclinux target and improved support for ColdFire cores, based on former work by Paul Dale (SnapGear, Inc.) and Peter Barada (Motorola, Inc.).
October 17, 2003
GCC 3.3.2 has been released.
August 27, 2003
Nicolas Pitre has contributed his hand-coded floating-point support code for ARM. It is both significantly smaller and faster than the existing C-based implementation. The arm-elf configuration uses the new code now, and other ports will follow.
August 8, 2003
GCC 3.3.1 has been released.
June 26, 2003
Ben Elliston of Wasabi Systems, Inc. has converted the existing ARM processor pipeline description to the new DFA pipeline description model. It will be part of the GCC 3.4.0 release.
May 27, 2003
Proceedings and photographs of participants are available for the First Annual GCC Developers' Summit, which took place May 25-27, 2003.
May 14, 2003
GCC 3.3 has been released.
April 25, 2003
GCC 3.2.3 has been released.
February 05, 2003
GCC 3.2.2 has been released.
January 29, 2003
Andrew Haley of Red Hat completed the work begun by Bo Thorsen of SuSE to port GCJ to the AMD x86-64 architecture. This is the first implementation of the Java programming language to be made available on that platform. It will be part of the GCC 3.3 release.
January 28, 2003
The ongoing effort to remove warnings from the GCC code base itself, spear-headed by Kaveh Ghazi, has paid off: For our development versions and snapshots, we now enable -Werror during a full bootstrap.
January 22, 2003
The GCC Steering Committee has named Gabriel Dos Reis as release manager for the upcoming GCC 3.2.2 release, allowing Mark Mitchell to focus his efforts on the GCC 3.3 and 3.4 release series. 3.2.2 is intended to be a bug fix release only.
January 10, 2003
Geoffrey Keating of Apple Computer, Inc., with support from Red Hat, Inc., has contributed a precompiled header implementation that can dramatically speed up compilation of some projects.
December 27, 2002
Mark Mitchell of CodeSourcery has contributed a new, hand-crafted recursive-descent C++ parser sponsored by the Los Alamos National Laboratory. The new parser is more standard conforming and fixes many bugs (about 100 in our bug tracker alone) from the old YACC-derived parser.
December 4, 2002
Nathan Sidwell of CodeSourcery has contributed an implementation of non-trivial covariant returns for non-varadic virtual functions.
November 21, 2002
GCC 3.2.1 has been released. We plan to shortly create the GCC 3.3 release branch (but want to fix a couple of high-priority regressions first).
August 14, 2002
GCC 3.2 has been released.
July 26, 2002
GCC 3.1.1 has been released.
July 19, 2002
Michael Matz of SuSE, Daniel Berlin, and Denis Chertykov have contributed a new register allocator. IBM and Rice University have allowed use of their register allocator software patents for graph coloring and register coalescing.
May 28, 2002
Support for all the systems obsoleted in GCC 3.1 has been removed from the development sources. (These targets can still be restored if a maintainer appears.)
May 15, 2002
GCC 3.1 has been released.
May 5, 2002
Aldy Hernandez, of Red Hat, Inc, has contributed extensions to the PowerPC port supporting the AltiVec programming model (SIMD). The support, though presently useful, is experimental and is expected to stabilize for 3.2. The support is written to conform to Motorola's AltiVec specs.
May 2, 2002
HP and CodeSourcery announced that HP will sponsor Mark Mitchell's work as GCC Release Manager through April 2003.
April 30, 2002
Vladimir Makarov, of Red Hat, Inc, has contributed a new scheme for describing processor pipelines, commonly referred to as the DFA scheduler.
April 15, 2002
The Chill front end (that already was omitted from GCC 3.0) has been removed from the GCC source tree.
February 25, 2002
We have branched for GCC 3.1 (release criteria, changes) and are concentrating on bug fixes. The 3.1 release is planned for late April.
February 21, 2002
GCC 3.0.4 has been released.
February 9, 2002
Alexandre Oliva, of Red Hat, Inc., has contributed a port to the SuperH SH5 64-bit RISC microprocessor architecture, extending the existing SH port.
January 24, 2002
Tensilica has contributed a port to the configurable and extensible Xtensa microprocessor architecture.
January 14, 2002
Richard Stallman has changed the licensing of the Classpath AWT implementation to match the licensing of the rest of Classpath. This means that the only remaining barrier to AWT for libgcj is manpower. Work has already begun to merge the Classpath and libgcj AWT implementations.
January 8, 2002
SuSE Labs developers Jan Hubicka, Bo Thorsen and Andreas Jaeger have contributed a port to the AMD x86-64 architecture.
December 20, 2001
GCC 3.0.3 has been released.
November 3, 2001
Hans-Peter Nilsson has contributed a port to MMIX, the CPU architecture used in new editions of Donald E. Knuth's The Art of Computer Programming.
October 25, 2001
GCC 3.0.2 has been released.
October 11, 2001
Axis Communications has contributed its port to the CRIS CPU architecture, used in the ETRAX system-on-a-chip series.
October 5, 2001
Alexandre Oliva of Red Hat has generalized the tree inlining infrastructure, formerly in the C++ front end, so that it is now used in the C front end too.
October 2, 2001
Ada Core Technologies, Inc, has contributed its GNAT Ada 95 front end and associated tools. The GNAT compiler fully implements the Ada language as defined by the ISO/IEC 8652 standard.
September 11, 2001
Roman Lechtchinsky, Technische Universität Berlin, has donated support for the Cray T3E platform.
August 29, 2001
Jan Hubicka, SuSE Labs, together with Richard Henderson, Red Hat, and Andreas Jaeger, SuSE Labs, has contributed infrastructure for profile driven optimizations.
August 25, 2001
Geoffrey Keating of Red Hat has donated support for Sanyo's Stormy16 CPU core.
August 20, 2001
GCC 3.0.1 has been released.
August 16, 2001
The gcc.gnu.org machine will be moving to a new physical location with significantly improved bandwidth and backup on Saturday, August 18th. The move is expected to take less than two hours; DNS will be adjusted accordingly, the new IP address will be
July 17, 2001
The Steering Committee adopted a new development plan which we will start using for GCC 3.1, scheduled for April 15, 2002.
July 9, 2001
Daniel Berlin and Jeff Law have contributed a Sparse Conditional Constant Propagation optimization pass.
June 18, 2001
GCC 3.0 has been released.
March 16, 2001
GCC 2.95.3 has been released.
February 12, 2001
Our CVS tree has branched for the GCC 3.0 release process and Mark Mitchell, our release manager, has provided some guidelines for the GCC 3.0 branch.
February 12, 2001
Hans-Peter Nilsson, our search-engine volunteer, tweaked the search-engine to include all mailing lists (including libstdc++ and GCJ).
January 28, 2001
Tom Tromey has moved the Java mailing lists and web pages to gcc.gnu.org. Now the GCJ project is fully integrated into GCC.
January 21, 2001
Neil Booth has contributed improvements to the dependency generation machinery of the C preprocessor, adding some new functionality and correcting some undesirable behaviour of the old implementation.
January 15, 2001
The GCC development tree is in a slush state, with the goal of stabilization for branching for GCC 3.0.
December 19, 2000
The runtime library for the Java front end, libgcj, has been moved into the GCC tree. This means that a separate download will no longer be required for Java support.
December 4, 2000
Nick Clifton of Red Hat has donated support for the Intel XScale architecture.
November 26, 2000
The C, C++ and Objective C front ends now use the integrated preprocessor exclusively; their independent ability to tokenize an input stream has been removed.
November 18, 2000
G++ is now using a new C++ ABI that represents classes more compactly, uses shorter mangled names, and is optimized for higher run-time performance. The implementation of the new ABI was contributed by Mark Mitchell, Nathan Sidwell, and Alexander Samuel of CodeSourcery, LLC.
November 18, 2000
GCC now supports ISO C99 declarations in for loops (for (int i = 0; i < 10; i++) /* ... */). These are only supported in C99 mode (command-line options -std=gnu99 or -std=c99), which will be the default in some future release, but not in GCC 3.0.
November 14, 2000
Michael Matz has donated an implementation of the Lengauer and Tarjan algorithm for computing dominators in the CFG. This algorithm can be significantly faster and more space efficient than our older algorithm. For one particularly nasty CFG from complex C++ code (more than 77000 basic blocks) compile time dropped from more than 40 minutes to around 25 minutes. Memory consumption was also dramatically decreased.
November 13, 2000
We have now switched the C++ front end to use libstdc++-v3, a new implementation of the ISO Standard C++ Library which brings significant changes and improvements over our ``old'' library. There still be may some rough edges, but we are addressing problems as soon as we learn about them -- please help testing and improving ``your'' ports!
November 13, 2000
GCC now supports two more ISO C99 features:
November 2, 2000
The C, C++ and Objective C front ends to GCC now use an integrated preprocessor by default. If all goes well, this will also be the default mode for GCC 3.0.
November 1, 2000
Support for C99's _Pragma operator has been added to the preprocessor. This feature effectively makes it possible to have #pragma directives be part of macro expansions, and to have their arguments expanded too if necessary.
October 6, 2000
We would like to point out that GCC 2.96 is not a formal GCC release nor will there ever be such a release. Rather, GCC 2.96 has been the code- name for our development branch that will eventually become GCC 3.0. More...
Sep 11, 2000
Zack Weinberg of Cygnus, a Red Hat company, has contributed modifications to the C, C++, and Objective C compilers which permit them to use the C preprocessor library (cpplib) directly instead of via a separate executable.

This is not yet the default mode, but we hope it will be the default in GCC 3.0. When it is used the compiler will be faster because it will not have to do lexical analysis twice, nor save the preprocessed output to a temporary file. In the future, this will permit better error messages, and more detailed debugging information particularly when complex macros are used.

Sep 11, 2000
Neil Booth has contributed a new lexer and macro-expander for the C preprocessor. The lexer makes a single pass over the source files, whereas previously it made two. The macro expander operates on lexical tokens instead of text strings.

ISO C, C++, and Objective C use the new preprocessor. Traditional (K+R) C, Fortran, and Chill use an older implementation (taken from GCC 1) which obeys the rules for pre-standard C preprocessing. Either version may be used to preprocess assembly language.

May 2, 2000

Stan Cox and Jason Eckhardt of Cygnus, a Red Hat company, have contributed a basic block reordering pass. The optimization can reposition basic blocks from across the entire function in an attempt to reduce branch penalties and enhance instruction cache efficiency.

Our thanks go to Michael Hayes, Jan Hubicka, and Graham Stott who noticed or fixed defects or made other useful suggestions.

May 1, 2000

Richard Earnshaw of ARM Ltd, and Nick Clifton of Cygnus, a Red Hat company, have contributed a new back end for the Arm and Thumb processors.

The new back end combines code generation for the Arm, the Thumb and the StrongArm into one compiler, with the target processor and instruction sets being selectable via command-line switches.

April 30, 2000
Michael Meissner and Nick Clifton of Cygnus, a Red Hat company, have contributed a port for the Mitsubishi D30V processor.

Michael Meissner and Richard Henderson of Cygnus, a Red Hat company, have contributed a new if-conversion pass. The code runs faster and identifies more optimization opportunities than the old code. In addition, it also has support for conditional (predicated) execution, such as is found in the Intel IA-64 architecture, the ARM processors, and numerous embedded LIW and DSP parts.

March 22, 2000
The Steering Committee has appointed Mark Mitchell, of CodeSourcery, LLC, to manage the GCC 3.0 release and as a new Steering Committee member. CodeSourcery will be providing time from Mark, Alex Samuel, and other personnel, to manage the release. Thanks!

The Steering Committee and the GCC community owe Jeff Law an immense debt for his work as release manager for the EGCS 1.0.x, 1.1.x, and GCC 2.95.x series of releases. He has done an outstanding job.

March 18, 2000
Andy Vaught has started work on GNU Fortran 95, the Fortran front end destined to implement the latest standard. See this page for its current status.
March 17, 2000
Jim Wilson and Richard Henderson of Cygnus, a Red Hat company, and David Mosberger of HP labs have contributed a port for the Intel Itanium (aka IA-64) processor.

Jeff Law and Richard Henderson of Cygnus, a Red Hat company, have contributed RTL based tail call elimination optimizations. Support currently exists for the Alpha, HPPA, ia32 and MIPS processors. Long term the RTL based tail call optimizations will be replaced with a tree based tail call optimizer.
March 14, 2000
CodeSourcery, LLC is now providing nightly snapshots of GCC, distributed as RPMs for GNU/Linux on Intel platforms, plus build logs and testsuite results. In order to allow users to more easily confirm whether the current snapshot of GCC fixes a particular bug, an online compilation web form is provided.
March 13, 2000
Denis Chertykov contributed an AVR port. AVR is a family of micro controllers made by Atmel with embedded FLASH program memory and embedded RAM. It is the first GCC port to an 8-bit microprocessor with a 16-bit address bus.
March 9, 2000
CodeSourcery, LLC and Cygnus, a Red Hat company, have contributed an implementation of static single assignment (SSA) representation. SSA will facilitate the implementation of powerful code optimizations in GCC.
March 2, 2000
Jason Molenda, who had a major role in setting up and managing the gcc.gnu.org (originally egcs.cygnus.com) machine and site, is leaving Cygnus. We would like to thank him for his efforts and support behind the scenes and wish Jason all the best in his new job.
February 23, 2000
Cygnus, a Red Hat company, contributed an M*Core port.
January 4, 2000
Steve Chamberlain has contributed a picoJava port.
December 10, 1999
CodeSourcery, LLC has contributed a new inliner for C++. As a result, the compiler may use dramatically less time and memory to compile programs that make heavy use of templates.
December 1, 1999
Cygnus has donated support for the Matsushita AM33 processor (a member of the MN10300 processor family). The MN103 family is targeted towards embedded consumer products such as DVD players, HDTV, etc.
October 27, 1999
GCC 2.95.2 is released.
October 16, 1999

Craig Burley, our lead Fortran developer and the original author of g77, announced that he will stop working on g77 beyond the 2.95 series. On behalf of the entire GCC team, the steering committee would like to thank Craig for his work.

Craig has written a detailed analysis of the current state and possible future of g77, available at his g77 web site.

If you are interested in helping with g77, please contact us!

October 12, 1999
We are pleased to announce that Richard Earnshaw and Jason Merrill have been given global write permissions throughout the GCC sources.
Cygnus has installed various upgrades to improve services for GCC and other open source projects hosted by Cygnus.
October 11, 1999
The gcc steering committee welcomes a new member: Gerald Pfeifer. His insights into political issues and his web improvement work were and will be of great use.
September 21, 1999
Nick Clifton of Cygnus Solutions has donated support for the Fujitsu FR30 processor. The FR30 is a low-cost 32bit cpu intended for larger embedded applications. It has a simple load/store architecture, 16 general registers and a variable length instruction set.
September 20, 1999
Cygnus Solutions has donated two new global optimizers to GCC. Global Null Pointer Test Elimination and Global Code Hoisting/Unification.
September 3, 1999
Long time GCC contributors Mark Mitchell and Richard Kenner have been given global write permissions. They are authorized to install and approve patches to any part of the compiler. Richard Kenner will initially be working on merging in the remaining changes from the old GCC 2 sources.
September 2, 1999
Richard Henderson has finished merging the ia32 backend rewrite into the mainline GCC sources. The rewrite is designed to improve optimization opportunities for the Pentium II target, but also provides a cleaner way to optimize for the Pentium III, AMD-K7 and other high end ia32 targets as they appear.
August 31, 1999
Cygnus Solutions has released libgcj version 2.95.1 Java runtime libraries for use with GCC 2.95.1.
August 19, 1999
GCC 2.95.1 is released.
August 4, 1999
A new snapshot of the new Standard C++ Library V3 has been released.

Cygnus Solutions has released libgcj version 2.95 Java runtime libraries for use with GCC 2.95.

August 2, 1999
Mumit Khan has pre-built gcc-2.95 binary packages for Windows platforms.
July 31, 1999
GCC 2.95 is released.
July 11, 1999
Cygnus Solutions has donated support for a generic i386-elf target. (Note that this will not be included in gcc 2.95.)
June 29, 1999
Cygnus Solutions has donated hpux11 support. (Note that this will not be included in gcc 2.95.)
June 15, 1999
Cygnus Solutions has donated a major rewrite of the Intel IA-32 back end, focusing on better optimization for the Pentium II. (Note that this will not be included in gcc 2.95.)
May 27, 1999
Toon Moene has emailed (and posted) his notes on the GNU Fortran (g77) Birds-of-a-Feather (BOF) session at LinuxExpo to the appropriate lists, and Craig Burley has made Toon's notes available (in edited form) at http://world.std.com/~burley/bof.html.
Probably the most important decision reached at the meeting is that Craig Burley will undertake the long-awaited 0.6 rewrite of the g77 front end as his top priority for the gcc 3.0 release, rather than focusing on implementing some of the most wanted features that didn't require the rewrite, such as Cray pointers.
The BOF provided us with some additional information to guide future development of GNU Fortran. Thanks to all who attended, whether in person or in spirit!
May 18, 1999
The sixth snapshot of the ongoing re-written C++ Standard Library has been released. It includes SGI STL 3.2, an automatically generated <limits>, a partially re-written valarray, a working stringbuf and stringstream (for basic types).
April 23, 1999
g77 now supports optional run-time checking of array subscript expressions via the -fbounds-check compiler option. (The same option applies to whatever bounds-checking applies for other languages, such as Java. The -ffortran-bounds-check option specifies bounds-checking for Fortran code.)
April 20, 1999
Yes, it is not a hoax: The egcs steering committee is appointed official GNU maintainer for GCC; the egcs team will be responsible for rolling out future GCC releases.
This will require some changes in policy and procedures for the project. We will provide more information on those changes as they are available.
www.gnu.org has the FSF announcement under the "GNU flashes" heading.
April 15, 1999
Mark Mitchell is now a co-maintainer of the C++ front end along with Jason Merrill.
April 13, 1999
We have set up a new mailing list gcc-cvs-wwwdocs that tracks checkins to the egcs webpages CVS repository.
April 7, 1999
Cygnus announces the first public release of libgcj, the runtime component of the GNU compiler for Java.
Read the release announcement.
Goto the libgcj homepage.
April 6, 1999
A new snapshot of the C++ standard library re-write has been released. This release includes SGI STL 3.12, a working valarray, and several (but not all) parts of templatized iostreams.
March 23, 1999
Through the efforts of John Wehle and Bernd Schmidt, GCC will now attempt to keep the stack 64bit aligned on the x86 and allocate doubles on 64bit boundaries. This can significantly improve floating point performance on the x86. Work will continue on aligning the stack and floating point values in the stack.
March 15, 1999
egcs-1.1.2 is released.
March 10, 1999
Cygnus donates improved global constant propagation and lazy code motion optimizer framework.
March 7, 1999
The egcs project now has additional online documentation.
February 26, 1999
Richard Henderson of Cygnus Solutions has donated a major rewrite of the control flow analysis pass of the compiler.
February 25, 1999
Marc Espie has donated support for OpenBSD on the Alpha, SPARC, x86, and m68k platforms. Additional targets are expected in the future.
January 21, 1999
Cygnus donates support for the PowerPC 750 processor. The PPC750 is a 32bit superscalar implementation of the PowerPC family manufactured by both Motorola and IBM. The PPC750 is targeted at high end Macs as well as high end embedded applications.
January 18, 1999
Christian Bruel and Jeff Law donate improved local dead store elimination.
January 14, 1999
Cygnus donates support for Hypersparc (SS20) and Sparclite86x (embedded) processors.
December 7, 1998
Cygnus donates support for demangling of HP aCC symbols.
December 4, 1998
egcs-1.1.1 is released.
November 26, 1998
A database with test results is now available online, thanks to Marc Lehmann.
November 23, 1998
egcs now can dump flow graph information usable for graphical representation. Contributed by Ulrich Drepper.
November 21, 1998
Cygnus donates support for the SH4 processor.
November 10, 1998
An official steering committee has been formed. Here is the original announcement.
November 5, 1998
The third snapshot of the rewritten libstdc++ is available.
October 27, 1998
Bernd Schmidt donates localized spilling support.
September 22, 1998
IBM Corporation delivers an update to the IBM Haifa instruction scheduler and new software pipelining and branch optimization support.
September 18, 1998
Michael Hayes donates c4x port.
September 6, 1998
Cygnus donates Java front end.
September 3, 1998
egcs-1.1 is released.
August 29, 1998
Cygnus donates Chill front end and runtime.
August 25, 1998
David Miller donates rewritten SPARC back end.
August 19, 1998
Mark Mitchell donates load hoisting and store sinking support.
July 15, 1998
The first snapshot of the rewritten libstdc++ is available.
June 29, 1998
Mark Mitchell donates alias analysis framework.
May 26, 1998
We have added two new mailing lists for the egcs project. gcc-cvs and egcs-patches.

When a patch is checked into the CVS repository, a check-in notification message is automatically sent to the gcc-cvs mailing list. This will allow developers to monitor changes as they are made.

Patch submissions should be sent to egcs-patches instead of the main egcs list. This is primarily to help ensure that patch submissions do not get lost in the large volume of the main mailing list.

May 18, 1998
Cygnus donates gcse optimization pass.
May 15, 1998
egcs-1.0.3 released!.
March 18, 1998
egcs-1.0.2 released!.
February 26, 1998
The egcs web pages are now supported by egcs project hardware and are searchable with webglimpse. The CVS sources are browsable with the free cvsweb package.
February 7, 1998
Stanford has volunteered to host a high speed mirror for egcs. This should significantly improve download speeds for releases and snapshots. Thanks Stanford and Tobin Brockett for the use of their network, disks and computing facilities!
January 12, 1998
Remote access to CVS sources is available!.
January 6, 1998
egcs-1.0.1 released!.
December 3, 1997
egcs-1.0 released!.
August 15, 1997
The egcs project is announced publicly and the first snapshot is put on-line.