This page contains information on GCC's implementation of the OpenMP standard and related functionality like the auto parallelizer (-ftree-parallelize-loops).
As of GCC 4.2, the compiler implements version 2.5 of the OpenMP standard and as of 4.4 it implements version 3.0 of the OpenMP standard.
Documentation on libgomp (OpenMP runtime for GCC).
Feel free to add new items to this list as you run into issues or features that would be interesting to add. Send mail to the list and/or the GCC OpenMP maintainers if any item in this list sounds interesting but is hard to understand.
Fix PR 35423.
Fine tune the auto scheduling feature for parallel loops.
Implement untied tasks (no compliance issue; needs to be well tuned to be actually faster; cf. page 53 of pdf) - see also next item
OpenMP v3.1 -- draft spec available (since February 5, 2011); note work has started on the gomp-3_1-branch