LLVM Project News and Details from the Trenches

Monday, March 16, 2015

LLVM Weekly - #63, Mar 16th 2015

Welcome to the sixty-third issue of LLVM Weekly, a weekly newsletter (published every Monday) covering developments in LLVM, Clang, and related projects. LLVM Weekly is brought to you by Alex Bradbury. Subscribe to future issues at http://llvmweekly.org and pass it on to anyone else you think may be interested. Please send any tips or feedback to asb@asbradbury.org, or @llvmweekly or @asbradbury on Twitter.

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News and articles from around the web

LLVM is taking part in Google Summer of Code as a mentoring organisation. Students can earn a $5500 stipend by working on open source projects over the summer, and applications upon today (March 16th). See here for the list of mentoring organisations advertising LLVM-related projects. Please do help spread the word. I am biased, but I'd like to draw particular attention to the wide variety of lowRISC GSoC ideas, including a project to implement an LLVM pass using tagged memory to provide protection against control-flow hijacking.

Version 0.11 of Pocl, the portable open-source OpenCL implementation has been released. Additions in this release include initial Android support and MIPS architecture support.

Version 1.11 of TCE, the TTA-based (Transport Triggered Architecture) Co-design Environment, which uses LLVM has been released. This release adds support for LLVM 3.6.

There will be a LLVM microconference at the Linux Plumbers Conference in August. There is a call for speakers.

On the mailing lists

LLVM commits

  • As DataLayout is now mandatory, LLVM APIs have been updated to use references to DataLayout. r231740.

  • Support was added for part-word atomics on PowerPC. r231843.

  • Initial work on enhancing ValueTracking to infer known bits of a value from known-true conditional expressions has landed. r231879.

  • The PowerPC READMEs have been updated to list potential future enhancements. r231946.

  • The llvm.eh.actions intrinsic has been added. r232003.

  • The documentation for llvm-cov has been updated. r232007.

  • The getting started docs now describe CMake as the preferred way to build LLVM. r232135.

  • llvm-vtabledump is now known as llvm-cxxdump. r232301.

Clang commits

  • The steady stream of OpenMP patches continues, with the addition of codegen support for the omp task directive and omp for. r231762, r232036.

  • Copy-constructor closures for MS ABI support has been added. r231952.

Other project commits

  • LLD gained support for linker script expression evaluation and parsing of the MEMORY and EXTERN commands. r231707, r231928, r232110.

  • LLDB gained a CODE_OWNERS.txt file. r231936.

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