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clang wins on some benchmarks, but gcc wins on over 50% of benchmarks, at least this always seems to be the case whenever I look it up.

If I were writing a program that needed to be really fast I would just compile with both on max optimizations and pick whichever was best. Most software isn't the linux kernel and will work fine with both compilers

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These benchmarks also don't reflect how good are the backends for different CPU architectures in GCC and LLVM.

For instance, GCC is by far the dominant compiler on GNU/Linux on x86, while LLVM has a almost total monopoly of AArch64 (think about Android NDK + iOS + macOS). I think it would be quite natural for the GCC AArch64 backend to get less focus compared to its x86 counterpart. It's a complicated landscape that is always full of gotchas, and that's why I don't like these kinds of benchmarks a lot.

source? llvm 13?

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