HELP: GCC Passes and Files

[perugupa@csee.wvu.edu]

Hi all,
   I have a question regarding the source code of gcc.Is there any way to
   find out details about the source files in gcc(3.2.3) ie. to find out
   which file contributes to which phase(PASS) of the compiler.The
   document(Passes and Files of the Compiler) available on net
http://gcc.gnu.org/onlinedocs/gccint/Passes.html#Passes

 mensioned a few files and their use but it is missing many files that are
 there in gcc subdirectory.may be that is too old.is there any new
 document like this.i have so many files that are missing. your help will
 be appreciated.thank you
best regards,
nath.