[Bug fortran/83650] [6/7/8 Regression] Wrong simplification in cshift with negative shifts

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83650

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
           Priority|P3                          |P4
      Known to work|                            |5.5.0
            Summary|[7/8 Regression]  Wrong     |[6/7/8 Regression]  Wrong
                   |simplification in cshift    |simplification in cshift
                   |with negative shifts        |with negative shifts
      Known to fail|                            |6.4.0, 7.2.0, 8.0

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Likely r230726 or r230832.