2011-07-20  Chung-Lin Tang  <cltang@codesourcery.com>

	* config/arm/arm.c (arm_canonicalize_comparison): Add case to
	canonicalize left operand from ZERO_EXTEND to AND.

	testsuite/
	* gcc.target/arm/combine-movs.c: New.
	* gcc.target/arm/unsigned-extend-2.c: New.

From-SVN: r176495