With yesterday's full A10-7850K Linux tests against different AMD/Intel APU/CPUs, HPC Challenge wasn't used as part of the Phoronix Test Suite test queue. HPCC was avoided since the test generally takes a couple hours to run on modern hardware when using an appropriately-sized configuration.
However, with HPCC still being quite popular, I ran some standalone results of HPC Challenge with "-O3 -march=native" tuning on my A10-7850K system while running Ubuntu 14.04 Linux. Those interested in the results can find them hosted on OpenBenchmarking.org.
For those wishing to see how their own HPC Challenge test compares to these AMD Kaveri APU results with Steamroller CPU cores can simply install the Phoronix Test Suite and then run phoronix-test-suite benchmark 1401165-PL-HPCCHALLE83.
See the system details and the rest of the AMD A10-7850K data via OpenBenchmarking.org.