re PR middle-end/63762 ([ARM]GCC generates UNPREDICTABLE STR with Rn = Rt when hard-float abi is used)

2014-11-19  Renlin Li  <Renlin.Li@arm.com>

        PR middle-end/63762
        * ira.c (ira): Update preferred class. 

        * gcc.dg/pr63762.c: New test.

From-SVN: r217783