+Plugin Diego Novillo dnovillo@google.com
+Plugin Le-Chun Wu lcwu@google.com
+register allocation Peter Bergner bergner@vnet.ibm.com
+register allocation Kenneth Zadeck zadeck@naturalbridge.com
+register allocation Seongbae Park seongbae.park@gmail.com
+selective scheduling Andrey Belevantsev abel@ispras.ru