Re: [patch] measurements, numbers about CONFIG_OPTIMIZE_INLINING=y impact

Linus Torvalds
2009-01-09T16:45:39Z

On Fri, 9 Jan 2009, H. Peter Anvin wrote:
> As far as naming is concerned, gcc effectively supports four levels,
> which *currently* map onto macros as follows:
>
> __always_inline Inline unconditionally
> inline Inlining hint
> <nothing> Standard heuristics
> noinline Uninline unconditionally
>
> A lot of noise is being made about the naming of the levels

The biggest problem is the <nothing>.

The standard heuristics for that are broken, in particular for the "single
call-site static function" case.

If gcc only inlined truly trivial functions for that case, I'd already be
much happier. Size be damned.

Linus