[Bug tree-optimization/99971] GCC generates partially vectorized and scalar code at once

[andysem at mail dot ru via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99971

--- Comment #1 from andysem at mail dot ru ---
For reference, an ideal version of this code should look something like this:

test(A&, A const&, A const&):
        movdqu  (%rsi), %xmm0
        movdqu  (%rdi), %xmm1
        movdqu  (%rdx), %xmm2
        paddd   %xmm1, %xmm0
        psubd   %xmm2, %xmm0
        movups  %xmm0, (%rdi)
        ret