[Bug middle-end/90518] ICE: in emit_move_insn, at expr.c:3745 in gcc.dg/gimplefe-40.c

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90518

--- Comment #1 from Jeffrey A. Law <law at redhat dot com> ---
It looks like BIT_INSERT_EXPR is being expanded as a simple move even though
its got BLKmode operands.  That's a no-no.  We have go use the mem* routines
rather than a simple move insn.