[Bug tree-optimization/115697] [11/12/13/14/15 Regression] Miscompilation with -fgraphite-identity at -O2

[xry111 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115697

Xi Ruoyao <xry111 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |xry111 at gcc dot gnu.org
      Known to fail|                            |11.1.0
            Summary|Miscompilation with         |[11/12/13/14/15 Regression]
                   |-fgraphite-identity at -O2  |Miscompilation with
                   |                            |-fgraphite-identity at -O2
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2024-06-28
           Keywords|                            |needs-bisection
      Known to work|                            |10.5.0

--- Comment #1 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
Confirmed.

- Code from GCC 6 - 10 outputs "6 4 1" correctly.
- Code from GCC 11 - 14 outputs "3 2 1".
- Code from GCC 5 crashes with SIGFPE.