[Bug middle-end/78468] [8 regression] libgomp.c/reduction-10.c and many more FAIL

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78468

--- Comment #39 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> The existing alloca code relies on STACK_BOUNDARY being set correctly. Has
> the value been fixed already for the OS variants mentioned? If stack
> alignment can't be guaranteed by OS/runtime/prolog, STACK_BOUNDARY should be
> 8.

No, no, no, please read the ??? note I put in emit-rtl.c.  STACK_BOUNDARY is
correct, the problem is the declared alignment of the virtual registers.