At http://www.gnu.org/software/gcc/extensions.html we have a reference to the DLX port of GCC, which corresponds to the DLX machine described in "Computer Architecture: A Quantitative Approach" by Hennessy and Patterson.
Sadly, the link to http://www-mount.ee.umn.edu/~okeefe/mcerg/gcc-dlx.html doesn't work and I failed to find a replacement page. Any pointers? On the binutils side I see that Nikolaos has been listed as a maintainer, so there may be hope? :-) Otherwise I'm afraid we'll have to remove our reference to the DLX port. Gerald