[Bug middle-end/84877] Local stack copy of BLKmode parameter on the stack is not aligned when the requested alignment exceeds MAX_SUPPORTED_STACK_ALIGNMENT

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84877

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think GCC needs to copy P0 to a properly aligned stack slot in the prologue.