Callgraph in gcc

[Virender Kashyap]

HI,
     I had doubt whether in "unit-at-time mode" call graph is built 
incrementally or is it built
only after all the funcitons have been parsed (i.e. after 
cgraph_finalize_compilation unit functions is called). In the latter case, 
where are all the function trees stored then ? I
presume that cgraph nodes are allotted to respective functions (and trees 
stored there) and
only call and return edges are fixed after all funcitons are ready with
  their trees.
Could someone please clarify on this?


Thanks and Regards.
Virender