[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

Segher Boessenkool <segher at gcc dot gnu.org> changed:

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           Assignee|unassigned at gcc dot gnu.org      |segher at gcc dot 
gnu.org

--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Created attachment 43631
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43631&action=edit
proposed patch

I cannot reproduce that exact generated code; maybe it needs tuning for some
particular CPU?

Could you try the attached patch?  Thanks!