Something seems wrong:
in tree_function_version:
initialize_cfun (new_decl, old_decl,
old_entry_block->count);
>From the above we can see new_decl's entry BB's count will be the same
as old_decl (no scaling).
In copy_bb, new BB's profile count will also be the same as ol
We have a program like this:
A() {// hot func
...
}
B() {
A();// very hot
if (i) {
A(); // very cold
}
}
Both callsites of A will be inlined into B. In gcc func
save_inline_function_body in inline_transform stage, A's first clone
will be choosen and turned into a real func.
