[Bug target/100998] [12 Regression] bug in experimental GCC12 with optimization '-O1', disappears with optimization '-O0'

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100998

Peter Bergner <bergner at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |acsawdey at gcc dot gnu.org,
                   |                            |bergner at gcc dot gnu.org,
                   |                            |segher at gcc dot gnu.org

--- Comment #3 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #2)
> If this is powerpc and on power10, then it is most likely caused by r12-1020.

Not arguing with you, but how did you pinpoint this commit?