combine.c (simplify_comparison): Re-canonicalize operands where appropriate.

2013-07-26  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
            Richard Earnshaw  <richard.earnshaw@arm.com>

	* combine.c (simplify_comparison): Re-canonicalize operands
	where appropriate.	
	* config/arm/arm.md (movcond_addsi): New splitter.

Co-Authored-By: Richard Earnshaw <rearnsha@arm.com>

From-SVN: r201260