The warning is pretty old, yeah - we can remove it if we aren't aware of
any current issues (I'm not aware of any either).

Might be worth keeping a general warning that LTO can be influenced by
undefined behavior in surprising ways sometimes.

On Tue, Oct 9, 2018 at 4:57 PM 'Sam Clegg' via emscripten-discuss <
emscripten-discuss@googlegroups.com> wrote:

> LLVM LTO in general should be safe IIUC.  At least when using upstream
> llvm I don't know of any issues.  Perhaps there is something different
> with fastcomp that I'm not aware of.  Perhaps we should remove that
> from the docs.
> On Tue, Oct 9, 2018 at 3:34 PM Александр Гурьянов <caiiiy...@gmail.com>
> wrote:
> >
> > Hi. I tried it couple of times. Problem is in undefined behaviour my
> > code works correctly most of time, but sometimes unpredictable erros
> > are happen. I decide to not use them, because it is impossible to
> > prove that output is working correctly.
> >
> > ср, 10 окт. 2018 г. в 0:09, Corey Lucier <corey.luc...@gmail.com>:
> > >
> > > We really wish to lean on LLVM link time optimizations.
> > >
> > > The Emscripten docs say . "LLVM LTO is not perfectly stable yet, and
> can cause code to behave incorrectly.".
> > >
> > > Does this note still apply? There's nothing saying what particular
> scenarios are problematic and I can't find equivalent docs in the LLVM
> project itself.
> > >
> > > So...are you guys actively discouraging it's use?
> > >
> > > Thanks,
> > >
> > > Corey
> > >
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