PR rtl-optimization/57439
        * postreload.c (move2add_valid_value_p): Check that we have
        a zero subreg_regno_offset when accessing the register in
        the requested mode.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@199449 138bc75d-0d04-0410-961f-82ee72b054a4