Same problem using the stable mesa padoka ppa, as of the most recent build

llvm-toolchain-3.9      1:3.9.1-1~gd~x  Oibaf (2017-01-08)

mesa    1:13.0.3-3~x~padoka0    Paulo Dias (2017-01-08)

https://launchpad.net/~paulo-miguel-dias/+archive/ubuntu/pkppa