re PR tree-optimization/81083 (ICE: Unable to coalesce ssa_names 4 and 13 which are marked as MUST COALESCE)

2017-06-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/81083
	* gcc.dg/torture/pr81083.c: Add prototypes.

From-SVN: r249193