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LLVM Weekly - #59, Feb 16th 2015

Welcome to the fifty-ninth 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

Reminder, the EuroLLVM 2015 call for papers submission deadline is TODAY. See here for details.

LLVM and Clang 3.6-rc3 has been tagged, any help with testing is greatly appreciated.

On the mailing lists

LLVM commits

  • The biggest chunk of internal refactoring of debug metadata has landed, with the addition of specialized debug info metadata nodes. r228640.

  • New intrinsics llvm.eh.begincatch and llvm.eh.endcatch intrinsics have been added to support Windows exception handling. r228733.

  • A DebugInfoPDB implementation using the MS Debug Interface Access SDK has landed. r228747.

  • SimplifyCFG will now use TargetTransformInfo for cost analysis. r228826.

  • A profitability heuristic has been added for the x86 mov-to-push optimisation. r228915.

  • PassManager.h is now LegacyPassManager.h. As described in the commit message, if you are an out of tree LLVM user you may need to update your includes. r229094.

Clang commits

  • The /volatile:ms semantics have been implemented, turning volatile loads and stores into atomic acquire and release operations. r229082.

Other project commits

  • C++14's sized deallocation functions have been implemented in libcxx. r229281.

  • lld learnt to handle the --wrap option. r228906.

  • lldb gained the concept of "runtime support values". r228791.

  • The remote-android platform has been added to lldb. r228943.