[Bug rtl-optimization/80233] [7 Regression] ICE in combine_instructions w/ -O2 (and above)

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80233

--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Yeah exactly...  so I'm conflicted whether we need to backport this or not.