[Bug target/84064] ICE in ix86_expand_prologue related to -fstack-clash-protection and memcpy on i686

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84064

--- Comment #6 from Jeffrey A. Law <law at redhat dot com> ---
WRT c#3, yea, that code is totally broken and probably has been since the day
it was introduced.  The good news is its fixable.