[Bug tree-optimization/96270] [8/9/10/11 Regression] stdarg malfunction with -m32 and -Os

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Wed Jul 22 07:53:17 GMT 2020


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 1dc00a8ec9aeba86b74b16bff6f171824bb7b4a1

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.

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