Factorise code to transform unary ops on AMD64.

ir/be/amd64/amd64_transform.c

@@ -116,15 +116,18 @@ static ir_node *gen_Shr (ir_node *const node) { return gen_binop(node, &new_bd_a
 static ir_node *gen_Shrs(ir_node *const node) { return gen_binop(node, &new_bd_amd64_Sar);  }
 static ir_node *gen_Sub (ir_node *const node) { return gen_binop(node, &new_bd_amd64_Sub);  }
 
-static ir_node *gen_Minus(ir_node *node)
+static ir_node *gen_unop(ir_node *const node, ir_node *(*const new_node)(dbg_info*, ir_node*, ir_node*))
 {
-	ir_node  *block    = be_transform_node(get_nodes_block(node));
-	ir_node  *val      = be_transform_node(get_Minus_op(node));
-	dbg_info *dbgi     = get_irn_dbg_info(node);
+	dbg_info *const dbgi   = get_irn_dbg_info(node);
+	ir_node  *const block  = be_transform_node(get_nodes_block(node));
+	ir_node  *const op     = get_unop_op(node);
+	ir_node  *const new_op = be_transform_node(op);
 
-	return new_bd_amd64_Neg(dbgi, block, val);
+	return new_node(dbgi, block, new_op);
 }
 
+static ir_node *gen_Minus(ir_node *const node) { return gen_unop(node, &new_bd_amd64_Neg); }
+
 static ir_node *gen_Jmp(ir_node *node)
 {
 	ir_node  *block     = get_nodes_block(node);