https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77689
--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to morandidodo from comment #6) > However, I just made some tests, and it seems that the performance lost is > particularly related to std::log. If something else is being used, like > std::sqrt for example, the code compiled with gcc is still slower, but less. Adding -mveclibabi=svml should vectorize calls to these functions, but you'd have to link with SVML vector library then. icc is doing this by default: 400e0f: e8 ac 16 00 00 callq 4024c0 <__svml_log4> but gcc doesn't: 40078b: e8 00 ff ff ff callq 400690 <log@plt>
