re PR rtl-optimization/38245 (stack corruption when a call is removed but not...

re PR rtl-optimization/38245 (stack corruption when a call is removed but not the outgoing argument pushes)

	PR rtl-optimization/38245
	* tree-vrp.c (abs_extent_range): New function.
	(extract_range_from_binary_expr): Compute range
	for *_DIV_EXPR even if vr1 is VR_VARYING, VR_ANTI_RANGE
	or includes zero or if vr1 is VR_RANGE and op0 has some
	other range.

	* gcc.dg/pr38245-1.c: New test.
	* gcc.dg/pr38245-2.c: New test.

From-SVN: r142317