gcc/
	* config/nds32/nds32-memory-manipulation.c (nds32_expand_strlen): New
	function.
	* config/nds32/nds32-multiple.md (strlensi): New pattern.
	* config/nds32/nds32-protos.h (nds32_expand_strlen): Declare function.

Co-Authored-By: Chung-Ju Wu <jasonwucj@gmail.com>

From-SVN: r258425