[Llvm-bgq-discuss] Updated LLVM/Clang for the BG/Q: r167420-20121105

[Hal Finkel]

LLVM and Clang for the BG/Q have been updated today! This release is
r167420-20121105.

LLVM and Clang are fast approaching their branch date for version 3.2, and so the current version on Vesta is *almost* version 3.2 + BG/Q-specific additions. Thanks to a lot of work by contributors from IBM, many of the PowerPC ABI problems that existed previously are now gone. In addition, many other performance and feature improvements are now available. Unfortunately, TLS (thread local storage) still does not work well, and there is still no OpenMP support, but otherwise, things are looking much better.

Again, there are MPI wrappers available /home/projects/llvm/mpi/clang/bin
and /home/projects/llvm/mpi/clang.legacy/bin.

Please try it out and let me know if you encounter any problems. Also, please feel free to send me examples where the performance of the generated code is not good.

 -Hal

-- 
Hal Finkel
Postdoctoral Appointee
Leadership Computing Facility
Argonne National Laboratory