[Bug target/78444] Wrong prologue stack alignment for implicit dtor on x86_64-darwin*

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78444

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Iain Sandoe from comment #2)
> I had previously posted the fragment below for review - and will update that
> thread shortly.
But still - why doesn't expand_call update crtl->preferred_stack_update to 128,
as is the case with linux targets?