Disabling the heuristic inliner

[Shaun Jackman]

Is it possible to disable the heuristic inline function logic? I would
like to select the following behaviour:

* all static inline functions are always inlined
* all static functions that are called once are inlined
(-finline-functions-called-once)
* no other functions are inlined

I'm using -Os and I'm trying to find the right combination of -f
switches to enable this behaviour. I tried
-finline-limit=1 -finline-functions-called-once
but it caused static inline functions to not be inlined.

Thanks,
Shaun