[Bug tree-optimization/116034] [12/13/14/15 Regression] wrong code with memcpy() from _Complex unsigned short at -fno-strict-aliasing -O1 and above

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116034

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2024-07-22
   Target Milestone|---                         |12.5
            Summary|wrong code with memcpy()    |[12/13/14/15 Regression]
                   |from _Complex unsigned      |wrong code with memcpy()
                   |short at                    |from _Complex unsigned
                   |-fno-strict-aliasing -O1    |short at
                   |and above                   |-fno-strict-aliasing -O1
                   |                            |and above

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

Looks like the code that folds MEM[(charD.10 * {ref-all})&cD.2326 + 1B] into
REAL/IMAG is going wrong and should not have folded it into that. I have not
looked into why though.