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LLVM Weekly - #41, Oct 13th 2014

Welcome to the forty-first 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 and pass it on to anyone else you think may be interested. Please send any tips or feedback to, or @llvmweekly or @asbradbury on Twitter.

I've been in Munich for ORCONF this weekend. Slides from my talk about lowRISC are available here.

The canonical home for this issue can be found here at

News and articles from around the web

ELLCC, the LLVM/Clang-based cross development toolkit now has Windows binaries available.

IBM have posted a bounty on fixing the AddressSanitizer tests that fail on PowerPC.

GCC needs you! A large number of potential starting points for new contributors has been posted to the GCC mailing list.

On the mailing lists

LLVM commits

  • Switches with only two cases and a default are now optimised to a couple of selects. r219223.

  • llvm-symbolizer will now be used to symbolize LLVM/Clang crash dumps. r219534.

  • The calculation of loop trip counts for loops with multiple exits has been de-pessimized. r219517.

  • MIPS fast-isel learnt integer and floating point compare and conditional branches. r219518, r219530, r219556.

  • R600 gained a load/store machine optimizer pass. r219533.

Clang commits

  • The integrated assembler has been turned on by default for ppc64 and ppc64le. r219129.

  • clang-format's interpretation of special comments to disable formatting within a delimited range has been documented. r219204.

  • The integrated assembler has been turned on by default for SystemZ. r219426.

Other project commits

  • lld gained support for 'fat' mach-o archives. r219268.

  • The lldbtk example has seen some further development. r219219.

  • lldb-gdbserver can now be used for local-process Linux debugging. r219457.

  • The disassembly format for lldb can now be customized. r219544.