Re: optimizing out inline functions

From: Andrew Morton
Date: Thu May 29 2008 - 04:41:05 EST


On Wed, 28 May 2008 22:54:47 +0300 "Pekka Enberg" <penberg@xxxxxxxxxxxxxx> wrote:

> On Wed, May 28, 2008 at 10:51 PM, Steve French <smfrench@xxxxxxxxx> wrote:
> > Is one or the other style (with or without #define of empty function)
> > preferred? Does the compiler optimize both #else clauses out
> > properly? sparse and checkpatch seem to take either
>
> Both are optimized out but empty function is preferred for type checking.

Plus the inlined function can help suppress unused-var warnings because
it counts as a "use".

Sometimes this works the other way and the argument to the macro/inline
just doesn't exist, in which case we're forced to use a macro for the stub.



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