(xtrct_left, xtrct_right): New patterns.

From-SVN: r13904

gcc/config/sh/sh.md

@@ -1296,6 +1296,26 @@
 	      (const_string "14")))
     (set_attr "type" "arith")])
 
+;; These patterns are found in expansions of DImode shifts by 16, and
+;; allow the xtrct instruction to be generated from C source.
+
+(define_insn "xtrct_left"
+  [(set (match_operand:SI 0 "arith_reg_operand" "=r")
+        (ior:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand" "r")
+			   (const_int 16))
+ 	        (lshiftrt:SI (match_operand:SI 2 "arith_reg_operand" "0")
+			     (const_int 16))))]
+  ""
+  "xtrct	%1,%0")
+
+(define_insn "xtrct_right"
+  [(set (match_operand:SI 0 "arith_reg_operand" "=r")
+        (ior:SI (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0")
+			     (const_int 16))
+ 	        (ashift:SI (match_operand:SI 2 "arith_reg_operand" "r")
+			   (const_int 16))))]
+  ""
+  "xtrct	%2,%0")
 
 ;; -------------------------------------------------------------------------
 ;; Unary arithmetic