2017-09-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82264
	* tree-ssa-sccvn.c (vn_phi_eq): Use safe_dyn_cast to check
	for GIMPLE_CONDs.
	(vn_phi_lookup): Likewise.
	(vn_phi_insert): Likewise.

	* gcc.dg/torture/pr82264.c: New testcase.

From-SVN: r253005