Intel's C/C++ extensions that allow compilers to introduce parallelism in an automatic and safe way. These are syntax, not libraries. The hyperobjects remind me of something between software transactional memory and Dynamo-style conflict resolution.

Goals for the Intel Cilk GCC branch.

Clang can now compile itself! This brings back memories of the first conversation I had with one of my mentors asking "where do compilers come from?" The powerful abstractions built up over the years have worked to push the goal of a self-hosted compiler further out of possibility with each iteration. It isn't at all hard to imagine an assembler than can assemble itself. It is quite another thing to imagine a complete C compiler that can do the same. Clang reaching this milestone with such a large codebase compiling such a complicated grammar is worthy of applause.

GCC is my new (old) bicycle.

LLVM == Low Level Virtual Machine == JIT for C/C++

Smarter compiler caching.

If only I knew Perl.