There is a C/C++/Fortran compiler, 'binutils' (for linker and objdump), and
test cases stored in 3 git repositories
https://github.com/tjcw/gcc-7.3.1-AME
https://github.com/tjcw/binutils-2.31-AME
https://github.com/tjcw/gcc-ame-test
These are for an experimental microprocessor which was never actually made in 
silicon. I don't have the emulator for this microprocessor so the best you
can do to test the compiler is run the tests and eyeball the output.
The contents of the repositories are not archived here due to space limitations.