2016-10-07  Richard Biener  <rguenther@suse.de>

	* tree-ssa-propagate.c (replace_phi_args_in): Remove no longer
	required hack.
	(substitute_and_fold_dom_walker::before_dom_children):
	Substitute and fold before pass specific folding to avoid
	feeding that with SSA names that will be later released.
	* tree-ssa-ccp.c (get_value_for_expr): Guard for new SSA names
	introduced by folding and visited by evaluate_stmt called during
	ccp_fold_stmt.
	(likely_value): Likewise.
	(evaluate_stmt): Likewise.
	* tree-vrp.c (simplify_truth_ops_using_ranges): Fold modified stmt.
	(simplify_div_or_mod_using_ranges): Likewise.
	(simplify_min_or_max_using_ranges): Likewise.
	(simplify_abs_using_ranges): Likewise.
	(simplify_conversion_using_ranges): Likewise.
	(simplify_float_conversion_using_ranges): Likewise.
	(simplify_stmt_using_ranges): Likewise.

	* gcc.dg/tree-ssa/vrp01.c: Adjust.
	* gcc.dg/tree-ssa/vrp34.c: Likewise.

From-SVN: r240865