help -Intermediate Representation

[Shirish S Deshmukh]

Sir we are doing some reserch in compilers.We are developing a debugger
for C program which currently uses LCC and we want to port it to GCC. 
Is there any way to get Intermediate Representation of c programs using
gcc.Is there any tool or option in gcc which will convert c program in
Intermediate Representation. 

Thanks for your time                             
                                shirish