[SingleSource/Vectorizer] Add unit tests for AnyOf pattern.

[Mel-Chen]

This patch adds runtime test case for vectorization of AnyOf reduction idiom:

int32_t Rdx = -1;
for (unsigned I = 0; I < TC; I++) {
  Rdx = A[I] > B[I] ? 3 : Rdx;
}
return Rdx;

Improving test coverage, and please refer the issue llvm/llvm-project#120405.

[Mel-Chen]

Ping

[fhahn]

LGTM, but needs exit 0 in the reference output I think. might be good to run and check again to make sure everything passes

[Mel-Chen]

Passed with -mcpu=sifive-x280 -O3 -mllvm -force-tail-folding-style=data-with-evl -mllvm -prefer-predicate-over-epilogue=predicate-dont-vectorize.