https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81312
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Jan Hubicka from comment #3) > > Doesn't it improve performance in 64-bit mode? > > It used to be important for CPUs without ESP prediction engines, but most of > those are > history now. The codegen is quite different so it may be the case that it > still helps > somehow. Do you have some data on the perfomrance? > It is related to PR 81313. Without it, GCC generates awful stack realignment code.
