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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/96270] [8/9/10/11 Regression] stdarg
 malfunction with -m32 and -Os
Date: Wed, 22 Jul 2020 07:53:17 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96270

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot =
gnu.org
           Priority|P3                          |P2
             Status|NEW                         |ASSIGNED

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think we have some duplicates about this PRE issue but I also thought this
specific one is already mitigated by 1dc00a8ec9aeba86b74b16bff6f171824bb7b4=
a1

Now here code hoisting comes into play and with the other outstanding PRE
issues the issue is it operates based on values thus we do not actually
know the expression we operate on and VN value-numbers u.r the same as u.i.=