https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93871
--- Comment #16 from Thomas Henlich <thenlich at gcc dot gnu.org> --- Additional note: The issue is not restricted to complex types, but also occurs for real types. On i686-mingw32, by a factor 2...10 depending on kind. However I could not measure any slowdown on i686-pc-linux-gnu. Due to this, and my earlier confusion about mpc/mpfr, I chose not to include it in this bug report.