[Bug sanitizer/120201] [13/14/15/16/17 Regression] generates a misaligned vector operation for std::memcpy with -march=znver4 since santizer doesn't allocate properly aligned stack by r6-6813-g63998a6336239d

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120201

--- Comment #18 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Comment on attachment 64421
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64421
An updated patch

I still not sure this is correct.