re PR tree-optimization/58483 (missing optimization opportunity for const std::vector compared to std::array)

2019-07-02  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/58483
	* tree-ssa-scopedtables.c (avail_expr_hash): Use OEP_ADDRESS_OF
	for MEM_REF base hashing.
	(equal_mem_array_ref_p): Likewise for base comparison.

	* gcc.dg/tree-ssa/ssa-dom-cse-8.c: New testcase.

From-SVN: r272922