The Clang C/C++ compiler front-end to LLVM is now declared "feature complete" against the C++11 ISO standard.
Developing are reaching a point where the mainline LLVM/Clang compiler in an "out of the box" configuration can compile the mainline Linux kernel with only a few patches against the kernel's source tree. This summer's release of LLVM/Clang 3.3 should be a big milestone.
There's a discussion on the LLVM development mailing list about making the compiler become energy-aware to provide an optimization level that would provide the most power-efficient binaries. However, it isn't clear whether this would make sense over simply trying to assemble the fastest binary.
An independent developer has made improvements to the LLVM infrastructure and Clang compiler for supporting the compiling of C++ AMP code into OpenCL code with support for the NVPTX back-end so that this multi-threaded C++ code can be executed on NVIDIA GPUs.
For those using the proven and tested GCC 4.7 compiler series rather than the brand new GCC 4.8, there is now GCC 4.7.3 with over one hundred bug-fixes over the previous release.
A proposal has been made to develop a new LLVM compiler back-end that would generate TGSI instructions, the intermediate representation used by Mesa's Gallium3D drivers.
The LLVM project will be releasing daily Debian/Ubuntu package snapshots of its compiler for those interested in testing out the very latest code.
An Apple developer has shared plans to see LLVM 3.3 released in June of this year, following the month of May being dedicated to testing.
Steve McIntyre and the Linaro Enterprise Group recently analyzed Ubuntu and Fedora software packages to see what software was still relying upon hand-written Assembly code. This was done to see how much real Assembly is being used, to see what the code was used for, and whether it was worth porting to 64-bit ARM / AArch64 / ARMv8.
Beyond LLVM 3.3 having performance optimizations, one of many other features coming to this next compiler infrastructure update is greater support for Intel's AVX2 instruction set extensions.
Our latest benchmarks of the new GCC 4.8 compiler involve running through the CPU optimizations for the latest-generation Intel "Ivy Bridge" processors.
C++14 is the next update for the C++ programming language. While slated as only a minor extension to C++11, there are several new features being proposed.
Recent compiler testing of the latest LLVM/Clang 3.3 SVN code-base has yielded some significant performance boosts for some common C/C++ benchmarks against LLVM/Clang 3.2.
Following from this weekend's Intel Core i7 990X benchmarks on GCC 4.8, here are benchmarks of an ASUS Ultrabook with an Intel Core i3 "Ivy Bridge" benchmark as we explore how the new GCC 4.8 compiler affects its performance.
With yesterday's release of GCC 4.8.0, here are some new benchmarks. For this first roundabout are comparative benchmarks between GCC 4.7.2 and GCC 4.8.0 for an Intel Core i7 990X "Gulftown" system running Ubuntu Linux.
GCC 4.8 has been officially released today as the annual major update to the GNU Compiler Collection.
With GCC 4.8 using C++ as its implementation language of the compiler, some have questioned whether the compiler is as fast as when written in C. Here's some benchmarks showing C vs. C++ performance with GCC.
Last year at the LLVM developers' meeting it was proposed by an Apple engineer the concept of "modules" for C code in LLVM/Clang to replace the common development approach for C/C++ languages of including header files and passing the library to the linker. LLVM modules seek to take a different approach.
Compiler benchmarks at Phoronix commonly look at the performance of resulting binaries while less of a focus is the compilation time and binary sizes. However, a developer has carried out GCC benchmarks of the compilation times and binary sizes in different scenarios for GCC releases going from GCC 4.2 to the upcoming GCC 4.8.
Jakub Jelinek of Red Hat announced the first release candidate of GCC 4.8.0 on Saturday morning.
Developers from the member companies involved with Linaro are planning continued improvements to the LLVM compiler infrastructure that will benefit ARM developers and customers. With this ARM LLVM work there should also be Gallium3D LLVMpipe enhancements.
Building the Linux kernel with LLVM/Clang rather than GCC continues to be a big focus within the embedded Linux community.
AESOP is a new auto-parallelizing C/C++ compiler for shared memory systems. This new open-source compiler was written at the University of Maryland and is now available to the public.
After already having integrated TILE-Gx support into GCC 4.7, Tilera is now calling for the mainlining of its TILE-Gx back-end into LLVM. The LLVM Tile-Gx back-end is needed for the company's forthcoming many-core processor.
How's the NVIDIA Tegra 3 performance with its four Cortex-A9 cores performing under the forthcoming GCC 4.8 release? Here's some new benchmarks, similar to the recent compiler testing with the ARM Cortex-A15.
While Intel Haswell processors won't even be released to the public until later this year, compiler developers have already been working on supporting the new instruction set extensions of Haswell for more than one year. GCC developers already have early Intel Broadwell support ready for GCC 4.8.
Are there any performance improvements in store for GCC 4.8 as it affects the ARMv7 Cortex-A15 processor on SoCs like the Samsung Exynos 5 Dual? Here's some benchmark results to find out.
LLVM's Clang C/C++ compiler front-end is nearing feature completion for supporting C++11, the latest C++ ISO standard.
While LLVM and Clang (and related LLVM projects) remain in heavy development for the 3.3 cycle, up today are some initial compiler benchmarks of LLVM/Clang 3.3 SVN compared to the current stable release.
Aside from improvements to Link-Time Optimizations, run-time library improvements, and a new optimization level, the coming release of GCC 4.8 also features support for yet-to-be-out AMD hardware. AMD's Steamroller "Bulldozer 3" processor is already supported with compiler optimizations and so is AMD Jaguar, their new low-power APU that's rumoured to be in the next-generation consoles.
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