GCC 15 Compiler Showing Off Nice Performance Improvements on AMD Zen 5 (phoronix.com)

Clang 18 scores about the same as gcc 14 in runtime performance (with optimisation flags).

So gcc 15 is plentifully faster than clang 18 as well, transitively.

https://www.phoronix.com/review/gcc14-clang18-amd-zen4/5