On Tue, 25 Feb 2025 13:09:08 GMT, Matthias Baesken <mbaes...@openjdk.org> wrote:

> > I'm not sure what that line in Flags.gmk has to do with LTO support, since 
> > it's setting the optimization levels.
> 
> We could offer there another option LTO, additionally to LOW, HIGH, HIGHEST, 
> SIZE etc. .
> 
> > I don't think we should do it piece by piece like this, as Kim mentioned.
> 
> I am not sure if it is currently a good idea to set LTO for all JDK native 
> libs; but for some it might work well and be beneficial.

Maybe I can prepare a changeset for this and send the diff just to get a 
cursory review on the changes, and see where to go from there. In my fork I 
have an --enable-linktime-opt option that enables LTO, so it would be an opt in 
change, and not an immediate change to the default linking behaviour, which I 
think is a no go as you mentioned

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PR Comment: https://git.openjdk.org/jdk/pull/23563#issuecomment-2681943267

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