re PR rtl-optimization/72488 (wrong code (SIGFPE) at -Os and above on x86_64-linux-gnu (in the 64-bit mode))

2017-01-19  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/72488
	* tree-ssa-sccvn.c (run_scc_vn): When we abort the VN make
	sure to restore SSA info.
	* tree-ssa.c (verify_ssa): Verify SSA info is not shared.

From-SVN: r244623