Generating a comprehensive callgraph using GCC & Egypt

I am trying to generate a comprehensive callgraph (complete with low level calls to Linux, runtime, the lot). I have statically compiled my source files with "-fdump-rtl-expand" and created RTL files, which I passed to a PERL script called Egypt (which I believe is Graphviz/Dot) and generated a PDF file of the callgraph. This works perfectly, no problems at all. Except, there are calls being made into some libraries that are getting shown as built-in. I was looking to see if there is a way for the callgraph not to be printed as and instead the real calls made into the libraries ? Please let me know if the question is unclear. https://i.stack.imgur.com/WWoAC.jpg Basically, I am trying to avoid the callgraph from generating < built-in > Is there a way to do that ? -------- CODE --------- ``` #include <cilk/cilk.h> #include <stdio.h> #include <stdlib.h> unsigned long int t0, t5; unsigned int NOSPAWN_THRESHOLD = 32; int fib_nospawn(int n) { if (n < 2) return n; else { int x = fib_nospawn(n-1); int y = fib_nospawn(n-2); return x + y; } } // spawning fibonacci function int fib(long int n) { long int x, y; if (n < 2) return n; else if (n <= NOSPAWN_THRESHOLD) { x = fib_nospawn(n-1); y = fib_nospawn(n-2); return x + y; } else { x = cilk_spawn fib(n-1); y = cilk_spawn fib(n-2); cilk_sync; return x + y; } } int main(int argc, char *argv[]) { int n; long int result; long int exec_time; n = atoi(argv[1]); NOSPAWN_THRESHOLD = atoi(argv[2]); result = fib(n); printf("%ld\n", result); return 0; } ``` I compiled the Cilk Library from source.