Hi Jonathan,
egcs code was always license-compatible with GCC and was always
assigned to the FSF
The difference is quite significant.
both dragonegg and LLVM are license-compatible with GCC. The dragonegg
code is licensed under GPLv2 or later, while LLVM is licensed under the
University of Illinois/NCSA Open Source License, which is GPL compatible
according to
http://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses
The dragonegg plugin, being a combination of these plus GCC, is therefore
GPLv3.
You are of course quite right that neither LLVM nor dragonegg has its
copyright assigned to the FSF.
Ciao,
Duncan.