re PR middle-end/81719 (Range-based for loop on short fixed size array generates long unrolled loop)

2017-08-08  Richard Biener  <rguenther@suse.de>

	PR middle-end/81719
	* tree-ssa-loop-niter.c: Include tree-dfa.h.
	(expand_simple_operations): Also look through ADDR_EXPRs with
	MEM_REF bases treating them as POINTER_PLUS_EXPR.

	* g++.dg/tree-ssa/pr81719.C: New testcase.

From-SVN: r250954