GCC 15 Compiler Showing Off Nice Performance Improvements On AMD Zen 5
Out of 114 benchmarks carried out on both GCC 14 and GCC 15 Git, the GCC 15 built binaries were the fastest in 66% of the tests.
On a geometric mean basis, GCC 15 was about 2% faster on average.
When looking at the side-by-side for the tests with a measurable difference between GCC 14 and GCC 15 on this 5th Gen AMD EPYC server, GCC 15 based software had shown some very nice wins in a number of different workloads while in only a few cases were there any regressions. Those wanting to go through all 100+ benchmarks in detail can find them here. A look at GCC 15 against the latest LLVM Clang compiler is coming up next week on Phoronix. Benchmarks on other CPUs to also come soon.
GCC 15 is looking to be a very healthy upgrade that will debut as stable in the next month or two along with adding support for a number of new Intel CPU instruction set features, new C and C++ language features, continued progress on the Rust language support, and other new features for this widely-used open-source compiler.
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