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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/51506] Function cloning misses constant struct at -Os vs -O2
Date: Mon, 19 Jul 2021 03:06:54 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D51506

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|tree-optimization           |ipa
            Summary|Function cloning misses     |Function cloning misses
                   |constant struct             |constant struct at -Os vs
                   |                            |-O2
                 CC|                            |marxin at gcc dot gnu.org
             Target|                            |avr

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So this is done at -O2 already but not -Os.  I have not looked into why tho=
ugh.
Someone will need to look at the heurstics to figure out why.

Also it just does not happen on avr even.  There must be some heurstic chan=
ges
between most other targets and avr that causes this not to happen.=