(find_reloads_address_1, case PLUS): When handle SUBREG, add SUBREG_WORD offset to SUBREG_REG register number.

(find_reloads_address_1, case PLUS): When handle SUBREG, add SUBREG_WORD
offset to SUBREG_REG register number.
(find_reloads_address_1, case SUBREG): If a pseudo register inside a SUBREG is
larger than the class, then reload the entire SUBREG.

From-SVN: r10197