[Bug sanitizer/120201] [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

[hjl.tools at gmail dot com via Gcc-bugs]

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

--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 64412
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=64412&action=edit
A patch

This patch works on the testcase.