Disabling the heuristic inliner

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

Re: Disabling the heuristic inliner

[Shaun Jackman]

Is there a switch to never inline a non-static function?

Thanks,
Shaun

On Dec 19, 2007 6:25 PM, Shaun Jackman <sjackman@gmail.com> wrote:
> 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

Re: Disabling the heuristic inliner

[Paolo Carlini]

On 11/19/2009 02:21 AM, Shaun Jackman wrote:
> I haven't done a lot of testing, but
> -Os -fno-inline-small-functions
> seems to accomplish this.
>   
Note that this issue really doesn't qualify for gcc, gcc-help is more
suited.

Anyway, there are some attributes available, which probably you can find
useful, like always_inline, see the docs for details.

Paolo.

Re: Disabling the heuristic inliner

[Shaun Jackman]

2009/11/18 Shaun Jackman <sjackman@gmail.com>:
> Is it possible to disable the heuristic inline function logic? I would
> like the following behaviour:
>
> * static inline functions are always inlined
> * non-static functions are never inlined
> * static functions that are called once are inlined
> * static functions that are called more than once are not inlined
>
> I'm using -Os, and I'm trying to find the right combination of -f
> switches to enable this behaviour.
>
> Thanks,
> Shaun

I haven't done a lot of testing, but
-Os -fno-inline-small-functions
seems to accomplish this.

Cheers,
Shaun

Disabling the heuristic inliner

[Shaun Jackman]

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

* static inline functions are always inlined
* non-static functions are never inlined
* static functions that are called once are inlined
* static functions that are called more than once are not inlined

I'm using -Os, and I'm trying to find the right combination of -f
switches to enable this behaviour.

Thanks,
Shaun