.NH 2 Source files of UD .PP The sources of UD are in the following files and packages: .IP ud.h: 14 declarations of global variables and data structures .IP ud.c: the routine main; initialization of target machine dependent tables .IP defs: routines to compute the GEN and KILL sets and routines to analyse EM instructions .IP const: routines involved in constant propagation .IP copy: routines involved in copy propagation .IP aux: contains auxiliary routines .LP