PR tree-optimization/66187
	* match.pd ((bit_and (plus/minus (convert @0) (convert @1)) mask)):
	Pass TYPE_SIGN to tree_int_cst_min_precision.  If
	!TYPE_OVERFLOW_WRAPS, ensure @4 is non-negative.

	* gcc.c-torture/execute/pr66187.c: New test.
	* gcc.dg/pr66187-1.c: New test.
	* gcc.dg/pr66187-2.c: New test.

From-SVN: r223366