[Bug rtl-optimization/84780] [8 Regression] wrong code aarch64 with -O3 --param=tree-reassoc-width=32

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84780

--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
And the actual problem happens earlier: the earlier 63, 70 -> 71 combination
links
the much later insn 100 to 70, for cc, but there are plenty other setters and
users of cc earlier.