[Bug tree-optimization/128052] wrong code at -O1 and above for a _BitInt(510) bit-field read after a constant store to a union member

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128052

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2026-10-21
     Ever confirmed|0                           |1

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Value numbering store u.big to
0x100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Setting value number of .MEM_4 to .MEM_4 (changed)
Value numbering stmt = # DEBUG BEGIN_STMT
Value numbering stmt = _1 = u.s.f;
Setting value number of _1 to 0 (changed)


Confirmed.