I wrote this entirely blindly, as evidenced here by the changes you needed. At the time somebody had promised to soon put up an aix animal, but that apparently didn't work out.
Similarly, I asked IBM for XL/C for a POWER7 Linux VM to improve test cover on the build farm but was told to just use gcc. It was with regards to testing hardware decfloat support and the folks I spoke to said that gcc's support was derived from that in xl/c anyway.
They're not desperately keen to get their products out there for testing.
