[LLVMdev] Google Summer of Code Projects
torvald at se.inf.tu-dresden.de
Tue Apr 22 12:58:50 PDT 2008
On Tuesday 22 April 2008, Chris Lattner wrote:
> [llvmir] "Software Transactional Memory (STM) support in LLVM" by
> Luis Felipe Strano
I'd like to know more about the directions for the STM project.
Somewhat contrary to what the project's abstract states, there are open C/C++
based implementations for compiler support for memory transactions. Besides
some efforts to modify GCC (AFAIK the respective groups haven't published
source code yet), there is also an open-source tool that is implemented as an
LLVM pass (Tanger, see http://tinystm.org/tanger).
I'm part of a group that does research on transactional memory. We are working
on many aspects of (S)TM (STM algorithms and implementations, compiler
support, infrastructure, ...) and collaborate with several other research
groups. For example, I have worked on STM optimizations based on pointer
optimizations are implemented on top of our LLVM pass (see above) and use
Coming back to the compiler support, I would suggest that the project should
try to use existing infrastructure (tools, code, ...) as much as possible.
Many of the subproblems do have simple solutions, but integrating them can be
difficult because there is a lot of interaction, and design choices can often
have consequences that are hard to spot unless you have broader knowledge
We can also offer support and advice regarding TM and the project's topic if
there should be interest in that.
More information about the llvm-dev