re PR target/54089 ([SH] Refactor shift patterns)

	PR target/54089
	* config/sh/sh.md (ashlsi3_d): Invoke gen_shifty_op directly instead
	of trying to emit ashlsi3_n.

From-SVN: r189952

gcc/ChangeLog

+2012-07-30  Oleg Endo  <olegendo@gcc.gnu.org>
+
+	PR target/54089
+	* config/sh/sh.md (ashlsi3_d): Invoke gen_shifty_op directly instead
+	of trying to emit ashlsi3_n.
+
 2012-07-30  Laurynas Biveinis  <laurynas.biveinis@gmail.com>
 	    Steven Bosscher  <steven@gcc.gnu.org>
 

gcc/config/sh/sh.md

@@ -3533,7 +3533,12 @@ label:
     }
   else if (!satisfies_constraint_P27 (operands[2]))
     {
-      emit_insn (gen_ashlsi3_n (operands[0], operands[1], operands[2]));
+      /* This must happen before reload, otherwise the constant will be moved
+	 into a register due to the "r" constraint, after which this split
+	 cannot be done anymore.
+	 Unfortunately the move insn will not always be eliminated.  */
+      emit_move_insn (operands[0], operands[1]);
+      gen_shifty_op (ASHIFT, operands);
       DONE;
     }