GCC 14 vs. LLVM Clang 18 Compiler Performance On Fedora 40
Across the wide range of workloads tested, there's a healthy mix of wins for each of these open-source compilers. Ultimately though it comes down to what codebases and other factors are most important to you personally as well as each compiler's debugging facilities and other features to consider besides just the performance of the resulting binaries. These ongoing benchmarks do show the continued viability of LLVM Clang as an alternative to GCC for most Linux distribution uses.
Out of 130 tests in total, GCC 14.0.1 was the fastest in 55% of the tests.
But the wins often were quite close as confirmed by taking the geometric mean of all the data points: it's a dead heat between GCC and Clang at least for this AMD Ryzen Threadripper 7980X workstation running Fedora Workstation 40. Those wanting to go through all 130 data points in full can do so via this result page.
Stay tuned for more GCC 14 benchmarks coming soon with the GCC 14.1 stable release fast approaching.
If you enjoyed this article consider joining Phoronix Premium to view this site ad-free, multi-page articles on a single page, and other benefits. PayPal or Stripe tips are also graciously accepted. Thanks for your support.