Inlining, nested functions, and VLAs

[Richard Kenner]

    Before unnesting there is node->origin pointer pointing to the parent
    function.  After function unnesting (happening as part of
    cgraph_finalize*) the origin pointers are cleaned up so the nodes can be
    dealt with independently.  You probably want to simply set flag during
    doing the unnesting so the cannot_inline fails.

Unnesting happens *before* inlining, right?