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Re: Questions about IPA/clones and new LTO pass
- From: Jan Hubicka <hubicka at ucw dot cz>
- To: Jeff Law <law at redhat dot com>
- Cc: Erick Ochoa <erick dot ochoa at theobroma-systems dot com>, gcc at gcc dot gnu dot org, Christoph Müllner <christoph dot muellner at theobroma-systems dot com>, "Dr. Philipp Tomsich" <philipp dot tomsich at theobroma-systems dot com>
- Date: Tue, 10 Dec 2019 22:36:12 +0100
- Subject: Re: Questions about IPA/clones and new LTO pass
- References: <0519e1f7-7bed-2df2-1b1c-ad940bb31f92@theobroma-systems.com> <934a0fe9-892f-23ef-02c4-421b644f8700@theobroma-systems.com> <40ee7fb7c4dfb4b4565c045d63960fc0cfd033a6.camel@redhat.com>
> On Mon, 2019-12-09 at 17:59 -0500, Erick Ochoa wrote:
> > Hello,
> >
> > this is an update on the LTO pass we've been working on. The
> > optimization is called ipa-initcall-cp because it propagates constant
> > values written to variables with static lifetimes (such as ones
> > initialized in initialization functions).
> [ ... ]
> Just a note, I suspect most of the development community is currently
> focused on stage3 bugfixing rather than new code development. So
> replies may be limited.
>
> Jan Hubicka is probably the best person to answer your questions, but
> others may be able to do so as well.
Indeed, I am bit swamped at the moment, but I will try to look at this
at thursday. Sorry for being slow - feel free to ping me about any
IPA/LTO related issues if I respond slowly or not at all.
Honza
>
> jeff
>