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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/92860] [9/10/11/12 regression] Global flags
 affected by -O settings are clobbered by optimize attribute
Date: Tue, 14 Dec 2021 15:34:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D92860

--- Comment #75 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
(In reply to David Binderman from comment #74)
> (In reply to Martin Li=C5=A1ka from comment #72)
> > You will manage, it's not rocket science.
> >=20
> > So please, add break point at the place it triggers the ICE and do:
> >=20
> > (gdb) p &ptr1->x_help_flag
> > (gdb) p &ptr2->x_help_flag
>=20
> For this to work, I had to replace the options-save.o with a version
> compiled by -O0 and that made the problem go away ;-<

Or you would have to print &ptr1->x_help_flag with a printf and then
use gdb for the memory.

>=20
> I am still happy to walk away from this bug report. It is known
> to occur on only one variant of one architecture and it is hard
> to reproduce. I can think of better things to work on in gcc.

Ok...

>=20
> As far as finding a machine with a bdver2 architecture, I suspect
> any more recent AMD machine would be fine.=20
>=20
> Has no one checked the compile farm ?

No, there's not a bdver2 machine.=