[Bug target/119477] RISC-V: -fno-tree-vectorize -fno-tree-loop-vectorize -fno-tree-slp-vectorize can't turn off auto-vectorization

[sundongya at nucleisys dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119477

--- Comment #3 from 孙东亚 <sundongya at nucleisys dot com> ---
(In reply to Andrew Pinski from comment #2)
> Do you have a testcase?

Small test cases are not accurate enough, so we use the int case of spec2006 as
the test case: https://www.spec.org/cpu2006/CINT2006/. The compilation options
are shown above.