* gimple-ssa-evrp-analyze.c (set_ssa_range_info): Pass value_range
	to range_includes_zero_p.  Do not special case VR_ANTI_RANGE.
	* tree-vrp.c (range_is_nonnull): Remove.
	(range_includes_zero_p): Accept value_range instead of min/max.
	(extract_range_from_binary_expr_1): Do not early bail on
	POINTER_PLUS_EXPR.
	Use range_includes_zero_p instead of range_is_nonnull.
	(extract_range_from_unary_expr): Use range_includes_zero_p instead
	of range_is_nonnull.
	(vrp_meet_1): Pass value_range to range_includes_zero_p.  Do not
	special case VR_ANTI_RANGE.
	(vrp_finalize): Same.
	* tree-vrp.h (range_includes_zero_p): Pass value_range as argument
	instead of min/max.
	(range_is_nonnull): Remove.
	* vr-values.c (vrp_stmt_computes_nonzero): Use
	range_includes_zero_p instead of range_is_nonnull.
	(extract_range_basic): Pass value_range to range_includes_zero_p
	instead of range_is_nonnull.

From-SVN: r263842