* config/c4x/c4x.md (*db): Enable pattern if TARGET_LOOP_UNSIGNED
is non-zero.
(movstrqi_small, movstrqi_large, *cmpstrqi): Add + modifier to address
register constraints.
(*movhi_clobber+1): Modify splitter pattern to handle destination
register that is used in the source address.
(*xorhi3_clobber): Replace AND with XOR in call to legitimize_operands.
From-SVN: r26108
