Benchmarking AMD's New AOCC Compiler For Ryzen

While we were very excited when first hearing of AMD's AOCC compiler for potentially better performance on Ryzen, with this 1.0 release we found very little change in performance. In most workloads of the dozens of tests ran, the AOCC 1.0 performance ended up being right in line with upstream Clang 4.0. In a few cases AOCC was faster, but it was generally about three percent or less. In some of the cases where AOCC was faster, it was only to then lose out to the GCC compiler being faster yet. In some benchmarks, the Clang 5.0 development code was also faster than AOCC.

I'm still running some compiler tuning benchmarks with AOCC and some other tests, but so far the benefits of AOCC appear to be very small at least for this Ryzen 7 system. Stay tuned for more compiler benchmarks and if you appreciate our tests please consider joining Phoronix Premium to help support our benchmarking operations while enjoying ad-free viewing and multi-page articles on a single page.