PR tree-optimization/12517
	* gcc.c-torture/compile/pr12517.c: New test.

	PR tree-optimization/12578
	* gcc.c-torture/compile/pr12578.c: New test.

	PR tree-optimization/12899
	* gcc.c-torture/compile/pr12899.c: New test.

	PR rtl-optimization/14692
	* gcc.c-torture/compile/pr14692.c: New test.

	PR tree-optimization/16461
	* gcc.c-torture/compile/pr16461.c: New test.

From-SVN: r85698