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LLVM Clang 12 Compiler Is Performing Very Well For AMD Ryzen 9 5950X / Zen 3

Submitted by Rianne Schestowitz on Thursday 20th of May 2021 04:26:24 PM Filed under
Graphics/Benchmarks

Earlier this week I posted some benchmarks looking at the compiler performance of GCC 11 vs. LLVM Clang 12 on the Intel Core i9 11900K "Rocket Lake" processor while in this article the same tests and same software are being carried out on an AMD Ryzen 9 5950X "Zen 3" desktop. With these AMD Linux tests the Clang 12 compiler not only yielded the fastest binaries at -O2 but carried through in the more optimized configurations as well.

This article is looking at the Ryzen 9 5950X compiler performance with the recently released GCC 11 and LLVM Clang 12 compilers. The same benchmarks and same software stack as used in the Rocket Lake comparison were done for this Zen 3 benchmarking of these fresh open-source compilers. That includes testing both compilers with the "-O2" optimization level, "-O3 -march=native" for the more optimized configuration, and then "-O3 -march=native -flto" for also flipping on link-time optimizations (LTO).

The AMD Ryzen 9 5950X with ASUS CROSSHAIR VIII HERO system was tested with Fedora 34 on Linux 5.11 just as with the Rocket Lake tests while evaluating GCC 11.1.1 and LLVM Clang 12.0 with their release builds from the F34 repository.

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