[Bug tree-optimization/111751] RISC-V: RVV unexpected vectorization

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111751

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
If you add `-fno-vect-cost-model` to aarch64 compiling, then it uses SVE and
does not optimize to just `return 0`.