using emit_library_call

[Andreas Bauer]

> No.  Basically only during initial rtl generation.  You can
> sometime get away with emitting calls later on targets that
> pass parameters in registers, but that's sort of accidental.
> For targets that pass parameters on the stack, all calls must
> be emitted before virtual register instantiation.

What would you call "initial rtl generation"?  Where does it end?

Andi.