2012-10-19  Greta Yorsh  <Greta.Yorsh@arm.com>

gcc/testsuite/

        * gcc.target/arm/target-supports.exp (check_effective_target_arm_prefer_ldrd_strd): 
        New procedure.

gcc/

	* doc/sourcebuild.texi (Effective-Target Keywords): Document
	new effective target keyword arm_prefer_ldrd_strd.

From-SVN: r192615