[Bug sanitizer/63646] libsanitizer fails to build for AARCH64:ILP32

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63646

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I have a patch but I can only submit it to GCC for legal reasons.