• LLVM Clang 22 Compiler Performance Largely Unchanged Over Clang 21 On AMD Zen 5 With yesterday’s stable release of the LLVM Clang 22 compiler it didn’t take long for Phoronix readers to begin asking about the performance of this half-year feature update to this prominent open-source C/C++ compiler • What I am seeing so far are no big surprises with the performance largely being similar to Clang 21 across various open-source C/C++ workloads in the testing thus far • This initial round of reference benchmark results between LLVM Clang 22, Clang 21, and Clang 20 were done on an AMD EPYC Turin (Zen 5) Linux server • So far I haven’t yet seen any surprises out of my Clang 22 • 1 compiler benchmarking on x86_64 hardware • I’ve tested a few Intel and AMD systems to no major changes

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  • LLVM Clang 22 Compiler Performance Largely Unchanged Over Clang 21 On AMD Zen 5 With yesterday’s stable release of the LLVM Clang 22 compiler it didn’t take long for Phoronix readers to begin asking about the performance of this half-year feature update to this prominent open-source C/C++ compiler. What I am seeing so far are no big surprises with the performance largely being similar to Clang 21 across various open-source C/C++ workloads in the testing thus far. This initial round of reference benchmark results between LLVM Clang 22, Clang 21, and Clang 20 were done on an AMD EPYC Turin (Zen

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