LLVM Clang 16 vs. GCC 13 Compiler Performance On Intel Raptor Lake

Written by Michael Larabel in Software on 11 May 2023 at 11:00 AM EDT. Page 2 of 5. 35 Comments.

👁 QuantLib benchmark with settings of . Clang 16: -O3 -march=native -flto was the fastest.

Starting things off with the QuantLib quantitative finance software, the Clang-built library was about 6% faster than GCC 13.1.

👁 Crypto++ benchmark with settings of Test: Unkeyed Algorithms. Clang 16: -O3 -march=native -flto was the fastest.

In the case of the Crypto++ library, Clang still led -- albeit slightly with just a 16% lead over GCC 13.1.

👁 SMHasher benchmark with settings of Hash: t1ha0_aes_avx2 x86_64. GCC 13.1: -O3 -march=native -flto was the fastest.

GCC 13.1 did see slightly better performance with SMHasher. (Note it's build system applies slightly diferent LTO parameters based on the underlying compiler.)

👁 Timed MrBayes Analysis benchmark with settings of Primate Phylogeny Analysis. Clang 16: -O3 -march=native -flto was the fastest.

👁 Timed HMMer Search benchmark with settings of Pfam Database Search. Clang 16: -O3 -march=native -flto was the fastest.

While with the MrBayes and HMMer molecular biology software packages, Clang 16 yielded slightly faster binaries.

👁 Zstd Compression benchmark with settings of Compression Level: 12, Compression Speed. Clang 16: -O3 -march=native -flto was the fastest.

👁 Zstd Compression benchmark with settings of Compression Level: 12, Decompression Speed. Clang 16: -O3 -march=native -flto was the fastest.

👁 Zstd Compression benchmark with settings of Compression Level: 19, Compression Speed. Clang 16: -O3 -march=native -flto was the fastest.

👁 Zstd Compression benchmark with settings of Compression Level: 19, Decompression Speed. Clang 16: -O3 -march=native -flto was the fastest.

👁 Zstd Compression benchmark with settings of Compression Level: 19, Long Mode, Compression Speed. Clang 16: -O3 -march=native -flto was the fastest.

👁 Zstd Compression benchmark with settings of Compression Level: 19, Long Mode, Decompression Speed. Clang 16: -O3 -march=native -flto was the fastest.

When looking at the Zstandard compression performance when Zstd was built under the compilers, it was neck-and-neck competition here depending upon the particular compression settings.

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URL: https://www.phoronix.com/review/gcc13-clang16-raptorlake/2

⇱ LLVM Clang 16 vs. GCC 13 Compiler Performance On Intel Raptor Lake - Phoronix

LLVM Clang 16 vs. GCC 13 Compiler Performance On Intel Raptor Lake