Compiler News Archives

In preparing for the imminent release of LLVM 3.2, another worthwhile feature to go over is the NVPTX back-end that's been merged for this forthcoming open-source compiler infrastructure release. The NVPTX LLVM back-end is what's used by NVIDIA's closed-source driver for its CUDA and OpenCL compiler.

16 December 2012 - LLVM 3.2 - 3 Comments
Looping Through LLVM's New Loop Vectorizer

Premiering with LLVM 3.2, which will debut later this month, is an automatic loop vectorizer. I've already delivered benchmarks of LLVM's new automatic loop vectorizer, but here's more details on this new LLVM compiler feature.

8 December 2012 - LLVM Looping - Add A Comment
ARM Cortex-A15 GCC Compiler Tuning Performance

To complement the recent compiler benchmarking on the ARM Cortex-A15 as found in the Samsung Exynos 5 Dual with the Samsung Chromebook, here's some compiler tuning benchmark results from the speedy low-power ARM system.

4 December 2012 - ARM Cortex-A15 - 3 Comments
DARPA Project Using LLVM For Better Code Security

A software research project being funded by the United States' Defense Advanced Research Projects Agency (DARPA) with its Cyber Fast Track program is looking at ways for providing a flexible and integrated security infrastructure by using LLVM for dynamic and static security tasks.

2 December 2012 - DARPA FastTrack - 3 Comments
Using AddressSanitizer & ThreadSanitizer In GCC 4.8

While born originally at Google as projects for LLVM, AddressSanitizer and ThreadSanitizer have been ported to GCC and will be part of the forthcoming GCC 4.8 compiler release. Back at Google, they're onto developing MemorySanitizer for LLVM.

30 November 2012 - Features - Add A Comment
Unified Parallel C (UPC) Comes To LLVM/Clang

Clang UPC has been announced, which is a Unified Parallel C implementation targeting the LLVM/Clang compiler stack. Unified Parallel C is a C99 extension targeting high-performance computing on parallel machines.

30 November 2012 - UPC Clang - 2 Comments
A Basic Look At How The LLVM Compiler Works

The LLVM compiler infrastructure is frequently talked about on Phoronix whether it be about its Clang C/C++ compiler or one of the innovative use-cases for LLVM such as with the LLVMpipe Gallium3D driver or as a JIT engine within some free software projects like Mono. However, for those that don't understand much of the internals of LLVM, here's a brief overview.

29 November 2012 - LLVM - Add A Comment
LLVM 3.2 Improves PowerPC Compiler Support

In addition to featuring an auto-vectorizer, Polly optimizations, and countless other improvements, the forthcoming release of LLVM 3.2 brings numerous improvements to its PowerPC back-end.

25 November 2012 - LLVM 3.2 - 3 Comments
Google Parsing Of LLVM's Clang Compiler Errors

Another interesting session from this month's LLVM Developers' Meeting in San Jose was about how Google manages to collect and utilize Clang diagnostics internally for software they develop at the company.

21 November 2012 - LLVM Developers - Add A Comment
LLVM Developers Prefer Git Over SVN

While the LLVM compiler infrastructure is primarily developed around Subversion, a poll was recently conducted that found LLVM developers overwhelmingly prefer Git over SVN for version control.

19 November 2012 - LLVM - 9 Comments
Pairing A C Compiler With QEMU's Code Generator

Earlier this week when writing about the state of the Tiny C Compiler, I learned more about QCC. QCC is a new initiative to pair a forked version of the Tiny C Compiler (TCC) with QEMU's code generator.

18 November 2012 - QEMU Code Generation - 2 Comments
Clang Can Analyze Code Comments, Generate Docs

Aside from why LLVM/Clang was ported to one of the fastest super computer's in the world and using Clang to implement Microsoft's C++ AMP, another interesting session at this month's LLVM Developers' Conference in San Jose was about using Clang to analyze code comments.

18 November 2012 - LLVM's Clang - 5 Comments
Why LLVM/Clang Was Ported To A Super Computer

Most often whenever writing about LLVM and its Clang C/C++ compiler front-end on Phoronix, within the forums is a flurry of comments from those in support of and against this modular compiler infrastructure. Some are against LLVM/Clang simply because its BSD-licensed and sponsored by Apple rather than the GPLv3-licensed GCC backed by the FSF. Others, meanwhile, see LLVM as presenting unique advantages and benefits. What reasons would a leading US national laboratory have for deploying LLVM/Clang to their leading super-computer? Here's an explanation from them.

16 November 2012 - An Explanation - 11 Comments
Intel Makes Microsoft's C++ AMP Cross-Platform

Microsoft conceived C++ Accelerated Massive Parallelism (AMP) as a library atop DirectX 11 for offering data-parallelism directly in C++ that can make easy use of GPUs while having CPU fall-back support. With C++ AMP being similar to OpenCL, Intel engineers decided to implement the Microsoft specification within OpenCL and using LLVM/Clang so that it can be used cross-platform.

16 November 2012 - Intel Port - 10 Comments
LLVM Seeks New Code Owners

At Chris Lattner's keynote for the LLVM Developers' Conference that took place last week in California, he called for more "code owners" within the LLVM code-base.

12 November 2012 - LLVM Code Owners - 1 Comment

660 Compiler news articles published on Phoronix.