I want to find the path from a program location to main.entry. Lets
consider the following program where I am interested to find the path
from p = &a to main.entry.
int a, b;
p = &a; // <--- location
p = &b;
Is there any transformation pass that inlines callees into callers or
vice versa and make a one-whole function so that I can backtrack from
fun_ptr = &foo to main.entry.