[Bug tree-optimization/103359] [12 Regression] Dead Code Elimination Regression at -O3 (trunk vs 11.2.0)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103359

--- Comment #8 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
For the record, I'm using:

gcc version 11.2.1 20210728 (Red Hat 11.2.1-1) (GCC) 

as a proxy for gcc11.

And I'm using the *.fre1 dump to see what evrp sees on entry.

Perhaps there's something going on here such that I don't get IL Richi got in
comment #4 for trunk.