On Wed, 26 Sep 2018, Qing Zhao wrote:
> The request is for application developers who want to use gcc's online
>    patching feature.
> 
> Today, developers can turn off inlining and deliver just the patched routine.  They
>    can also allow all inlining and deliver the patched routine and all the routines
>    that the patched routine was inlined into.
> 
> completely turning off inlining will sacrifice too much run-time performance. completely
> enable inlining, on the other hand, will have the potential issues with code size, complexity and
> debuggability for the online patching.
> 
> the proposed option provides a compromised solution for the above issues. and enable more
> developers to utilize gcc’s online patching feature.

From this explanation it sounds to me that what you really need is -Os-like
behavior for IPA passes, without enabling -Os for gimple/rtl passes, as I
mentioned in my previous email. Honza, how does that sound?

> > If the original issue is that inlining duplicates code, wouldn't it be better
> > solved by a switch that instructs inlining heuristics to inline as if for -Os,
> > without enabling -Os for other passes?

Alexander