[NDS32] Implment setmem pattern.

gcc/
	* config/nds32/nds32-protos.h (nds32_expand_setmem): Declare.
	* config/nds32/nds32-multiple.md (setmemsi): Define.
	* config/nds32/nds32-memory-manipulation.c
	(nds32_gen_dup_4_byte_to_word_value): New.
	(emit_setmem_word_loop): New.
	(emit_setmem_byte_loop): New.
	(nds32_expand_setmem_loop): New.
	(nds32_expand_setmem_loop_v3m): New.
	(nds32_expand_setmem_unroll): New.
	(nds32_expand_setmem): New.

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

From-SVN: r258239

gcc/ChangeLog

+2018-03-05  Kito Cheng  <kito.cheng@gmail.com>
+	    Chung-Ju Wu  <jasonwucj@gmail.com>
+
+	* config/nds32/nds32-protos.h (nds32_expand_setmem): Declare.
+	* config/nds32/nds32-multiple.md (setmemsi): Define.
+	* config/nds32/nds32-memory-manipulation.c
+	(nds32_gen_dup_4_byte_to_word_value): New.
+	(emit_setmem_word_loop): New.
+	(emit_setmem_byte_loop): New.
+	(nds32_expand_setmem_loop): New.
+	(nds32_expand_setmem_loop_v3m): New.
+	(nds32_expand_setmem_unroll): New.
+	(nds32_expand_setmem): New.
+
 2018-03-04  Kito Cheng  <kito.cheng@gmail.com>
 	    Chung-Ju Wu  <jasonwucj@gmail.com>
 
-	*config/nds32/nds32-memory-manipulation.c
+	* config/nds32/nds32-memory-manipulation.c
 	(nds32_emit_load_store): New.
 	(nds32_emit_post_inc_load_store): New.
 	(nds32_emit_mem_move): New.
@@ -12,9 +26,9 @@
 	(nds32_expand_movmemsi_unroll): New.
 	(nds32_expand_movmemqi): Rename ...
 	(nds32_expand_movmemsi): ... to this.
-	*config/nds32/nds32-multiple.md (movmemqi): Rename ...
+	* config/nds32/nds32-multiple.md (movmemqi): Rename ...
 	(movmemsi): ... to this.
-	*config/nds32/nds32-protos.h (nds32_expand_movmemqi): Rename ...
+	* config/nds32/nds32-protos.h (nds32_expand_movmemqi): Rename ...
 	(nds32_expand_movmemsi): ... to this.
 
 2018-03-04  Kito Cheng  <kito.cheng@gmail.com>

gcc/config/nds32/nds32-multiple.md

@@ -3749,3 +3749,22 @@
 })
 
 ;; ------------------------------------------------------------------------
+
+(define_expand "setmemsi"
+   [(use (match_operand:BLK 0 "memory_operand"))
+    (use (match_operand:SI 1 "nds32_reg_constant_operand"))
+    (use (match_operand:QI 2 "nonmemory_operand"))
+    (use (match_operand 3 "const_int_operand"))
+    (use (match_operand:SI 4 "const_int_operand"))
+    (use (match_operand:SI 5 "const_int_operand"))]
+  ""
+{
+ if (nds32_expand_setmem (operands[0], operands[1],
+			  operands[2], operands[3],
+			  operands[4], operands[5]))
+   DONE;
+
+ FAIL;
+})
+
+;; ------------------------------------------------------------------------

gcc/config/nds32/nds32-protos.h

@@ -69,6 +69,7 @@ extern bool nds32_valid_smw_lwm_base_p (rtx);
 extern rtx nds32_expand_load_multiple (int, int, rtx, rtx, bool, rtx *);
 extern rtx nds32_expand_store_multiple (int, int, rtx, rtx, bool, rtx *);
 extern bool nds32_expand_movmemsi (rtx, rtx, rtx, rtx);
+extern bool nds32_expand_setmem (rtx, rtx, rtx, rtx, rtx, rtx);
 
 /* Auxiliary functions for expand unalign load instruction.  */