[multiple changes]

2010-12-08  Richard Earnshaw  <rearnsha@arm.com>

	PR target/46631
	* arm.c (thumb2_reorg): Also try to reduce <commutative_op> Rd, Rn, Rd
	into a 16-bit instruction.

2010-12-08  Wei Guozhi  <carrot@google.com>

	PR target/46631
	* gcc.target/arm/pr46631: New testcase.

From-SVN: r167595