tree-vrp.c (extract_range_from_assert): Refine the result range if the...

tree-vrp.c (extract_range_from_assert): Refine the result range if the variable referenced by the ASSERT_EXPR has a...


	* tree-vrp.c (extract_range_from_assert): Refine the result range
	if the variable referenced by the ASSERT_EXPR has a range and
	either the tentative result range or the previous range is a 
	VR_ANTI_RANGE.

	* gcc.dg/tree-ssa/vrp25.c: New test.

From-SVN: r109968