2016-10-12  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77920
	* tree-vrp.c (simplify_div_or_mod_using_ranges): Simplify.
	(simplify_min_or_max_using_ranges): Pass in gsi and use it.
	(simplify_abs_using_ranges): Likewise.
	(simplify_conversion_using_ranges): Likewise.
	(simplify_stmt_using_ranges): Adjust.

	* gcc.dg/torture/pr77920.c: New testcase.

From-SVN: r241020