Dispatch performance: compiler and standard library effects
A post compares std::variant and virtual dispatch across GCC versions. Its preview reports a shift from 28% slower with GCC 11 to 50% faster with GCC 12, changing only the compiler.
Published on June 8, 2026, the post compares the performance of std::variant and virtual dispatch across GCC versions. According to its preview, std::variant shifted from 28% slower with GCC 11 to 50% faster with GCC 12, with only the compiler changed. The example highlights how the compiler and standard library implementation can affect dispatch performance.
To check the result, consult the original post and verify the full benchmark conditions and data, which are not included in the preview. If reproducing the comparison, record compiler and library versions and rerun the tests in the environment of interest; do not generalize the result without validation.