PR tree-optimization/57149
	* tree-ssa-uninit.c (uninit_undefined_value_p): New inline.
	(can_skip_redundant_opnd, compute_uninit_opnds_pos,
	collect_phi_def_edges, execute_late_warn_uninitialized): Use
	uninit_undefined_value_p instead of ssa_undefined_value_p.

	* gcc.dg/pr57149.c: New test.

From-SVN: r198671