https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106043
--- Comment #1 from Jens Seifert <jens.seifert at de dot ibm.com> --- Found in documentation: https://gcc.gnu.org/onlinedocs/gcc-11.3.0/gcc/PowerPC-AltiVec-Built-in-Functions-Available-on-ISA-3_002e1.html#PowerPC-AltiVec-Built-in-Functions-Available-on-ISA-3_002e1
