PR middle-end/64922
	* gimple.c: Include gimple-ssa.h.
	(maybe_remove_unused_call_args): New function.
	* gimple.h (maybe_remove_unused_call_args): Declare.
	* cgraph.c (cgraph_edge::redirect_call_stmt_to_callee): Use it.
	* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children): Likewise.
	* gimple-fold.c (gimple_fold_call): Likewise.

From-SVN: r220417