Bootstrap broken in libobjc/sendmsg.c

[Jan Hubicka]

> .. looks like this is target/58269, which therefore affects
> x86_64-linux too.

Now this reproduces to me, too.  apppy_args expansion is trying to preserve AVX
register in V8SF mode when AVX is disabled.  This leads to move expander to not
allow moving it and we end up infinitely recursing trying to expand the move.
I am not sure what change triggered it.  I am looking into fix.

Honza