On Sunday, 25 June 2017 at 21:55:22 UTC, Johan Engelen wrote:
On Sunday, 25 June 2017 at 16:31:52 UTC, Moritz Maxeiner wrote:
By requiring the compiler to inline the empty foo:
This won't work.
Yes, it does; comment out the call to `foo` and notice no change
in the assembly in my link.
Semantically, there is still a call
You asked for
no call and no extra code at -O0
and that is exactly what this solution provides.
and e.g. profiling will see it:
https://godbolt.org/g/AUCeuu
The solution obviously does *not* work if you change the premise
of your question after the fact by artificially injecting
instructions into all function bodies (read what
`-finstrument-functions` does).
