It looks like the result of the latest LLVM developer discussion will mean releases past LLVM 3.4 will depend upon a C++11 toolchain for building the compiler infrastructure instead of a C++98 compliant compiler as needed right now to compile LLVM.
GCC developers from multiple companies are beginning to reach agreement that it's time for Java to be turned off by default in GCC. The Java compiler support in GCC is in the form of GCJ, but it doesn't see much active development these days with more of the Java work happening in OpenJDK. Developers are looking to disable Java from the default GCC build process but to potentially replace it with the Go or ADA languages.
Yesterday I had written how the Leadwerks Linux developer has some issues with GDB for debugging -- as do other game developers. Besides game developers, BSD developers also have issues with GDB and seek for better alternatives beyond just a more liberal code license.
As some more interesting GCC compiler news this week besides the integration of Intel Cilk Plus support and C11 _Atomic support being ready is a new competing implementation of the OpenACC parallel programming standard for the GNU Compiler Collection.
Joseph Myers of CodeSourcery has proposed a patch based upon a GCC branch to now mainline support for C11 _Atomic in the GNU Compiler Collection.
Clang-Cl is one of the new driver modes to the Clang C/C++ front-end compiler to LLVM and its designed to imitate Visual Studio's cl.exe compiler.
LLVM developers are once again bringing up the topic of whether their compiler infrastructure and Clang C/C++ front-end can utilize C++11 code.
The compiler developers at Apple that are focused upon the LLVM project are beginning to formulate their plans for getting the LLVM 3.4 release out the door around Christmas.
Having yesterday covered the features so far of GCC 4.9, here's a look at the features baking for LLVM 3.4 -- the next major compiler infrastructure update due out likely around the end of the year.
GCC 4.9 will likely not be released until later in H1'2014, but already a lot of compiler changes have been queued up to make this next major release of the GNU Compiler Collection exciting for developers and also benefiting users of the generated binaries.
The Embedded LLVM Compiler Collection (ELLCC) open-source project has reached the major milestone of being self-hosting.
The LLVM compiler infrastructure has now received support for the Cortex-A57, ARM's highest-end 64-bit AArch64 processor.
The recently announced just-in-time (JIT) compiler library using the GNU Compiler Collection might be added to the major GCC 4.9 release in 2014.
Earlier this week there was the news of Intel contributing their OpenMP Runtime to LLVM in order to advance the open-source compiler project. Now to end off the week is news that Apple, who continues to invest significantly into LLVM and employs many of the key contributors, has open-sourced their stack unwinder for the project.
Today in open-source multi-threading compiler news there's been word of Intel having their OpenMP Run-Time Library be a new LLVM sub-project and Cilk-Plus multi-threading support being cleared for GCC. In an abnormally interesting day for open-source compiler news, OpenMP 4.0 support is now ready for mainlining in GCC.
This morning there was news of Intel committed their open-source OpenMP Run-Time Library as a new LLVM project. Now this afternoon there's more good news for multi-threading in open-source compilers: the GCC steering committee will allow Intel to add their Cilk+ Runtime Library to the GCC code-base as they add multi-threading Cilk Plus C/C++ support to the compiler.
While LLVM's Clang C/C++ compiler has made amazing progress in recent times, one of the features it's sorely been missing has been OpenMP support to allow it to better compete with GCC in many multi-threaded workloads. There's been numerous projects to work on OpenMP support in LLVM/Clang and most recently Intel has been taking up the work. Intel's latest announcement in the area is that they have decided to open-source their own OpenMP Runtime as a new LLVM sub-project.
An experimental library has been published by a Red Hat developer that allows for an embeddable JIT compiler that's based on GCC.
Several months ago I wrote about the Duetto C++ compiler that is based upon LLVM's Clang and looks to take C++ programming to the HTML5 web. We hadn't heard anything out of the project since then, but today they're announcing their first public beta.
Samsung has published their code to a modified version of the GCC Compiler that supports using the OpenACC 1.0 parallel computing specification. OpenACC allows for simplified parallel programming on heterogeneous CPU and GPU systems.
LLVM's libc++ standard library alternative to the GNU's libstdc++ now has full support for the forthcoming C++1y standard.
For those curious about the performance of LLVM/Clang 3.4 -- the current development code of the increasingly-used open-source cross-platform compiler -- here's some new tests done on an Intel Core i7 "Haswell" processor with using the compiler's "core-avx2" optimizations and benchmarks comparing it to the stable LLVM 3.3 release.
After writing about ClangFormat yesterday as an interesting LLVM project that leverages Clang to automatically reformat C/C++ source-code, a Phoronix reader wrote in about another interesting project, Cling. Cling is an interactive C++ interpreter that uses Clang for Just-In-Time compilation.
Clang-Format is taking shape in LLVM 3.4 to be a competitive answer for automatically transforming and polishing C, C++, and Objective-C code-bases. Clang-Format is part of Clang Tools and can be used for automatic styling of code with easy integration for common programming applications.
While the LLVM compiler infrastructure is supported to some extent on Microsoft Windows, the main focus of LLVM development has been -- and continues to be -- around Linux and OS X support. However, with a recent push, the LLVM toolchain is beginning to make more serious progress on Windows.
It's been a while since last publicly releasing any GCC vs. LLVM/Clang compiler benchmarks from the Samsung Chromebook with Exynos 5 Dual Cortex-A15 SoC. However, uploaded to OpenBenchmarking.org I have now released some new results.
Our latest tests from an Intel Core i7 4900MQ "Haswell" laptop are looking at the impact of applying CPU compiler optimizations for this high-end "core-avx2" processor when using a recent GCC 4.9 development snapshot.
The mainline GCC compiler received support today for UBSAN, the Undefined Behavior Sanitizer.
GCC 4.9 isn't anticipated for release until H1'2014, but it's already been stacking up changes for several months. We have covered some of the new GCC 4.9 work already on Phoronix for this open-source compiler, but here's an overview of some of the other changes.
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