Fix fehler157: Lowering Shrs was missing a Conv.

[r22469]

ir/lower/lower_dw.c

@@ -999,24 +999,25 @@ static void lower_Shrs(ir_node *node, ir_mode *mode, lower_env_t *env) {
 
 		if (tarval_is_long(tv) &&
 		    get_tarval_long(tv) >= (long)get_mode_size_bits(mode)) {
-			ir_node *block = get_nodes_block(node);
-			ir_node *left = get_Shrs_left(node);
-			long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
+			ir_node *block   = get_nodes_block(node);
+			ir_node *left    = get_Shrs_left(node);
+			long     shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
+			int      idx     = get_irn_idx(left);
+			ir_node *low;
 			ir_node *c;
-			int idx = get_irn_idx(left);
 
 			left = env->entries[idx]->high_word;
 			idx = get_irn_idx(node);
 
 			if (shf_cnt > 0) {
-				ir_node *tmp;
-				c = new_r_Const_long(irg, block, mode_Iu, shf_cnt);
-				tmp = new_r_Shrs(irg, block, left, c, mode);
-				/* low word is expected to have mode_Iu */
-				env->entries[idx]->low_word = new_r_Conv(irg, block, tmp, mode_Iu);
+				c   = new_r_Const_long(irg, block, mode_Iu, shf_cnt);
+				low = new_r_Shrs(irg, block, left, c, mode);
 			} else {
-				env->entries[idx]->low_word = left;
+				low = left;
 			}  /* if */
+			/* low word is expected to have mode_Iu */
+			env->entries[idx]->low_word = new_r_Conv(irg, block, low, mode_Iu);
+
 			c = new_r_Const_long(irg, block, mode_Iu, get_mode_size_bits(mode) - 1);
 			env->entries[idx]->high_word = new_r_Shrs(irg, block, left, c, mode);