I am wondering what should be the minimum for loop length for the auto vectorizer to enable the vectorization. ?
for (int i= 0 ; i< 4 ; i+= 3) // Some operations
using Rpass flag, I am getting following remark.
loop control flow is not understood by vectorizer [-Rpass-analysis=loop-vectorize]
can someone help me understand what are the basic requirement for a for loop to get vectorized. ?
Source: Windows Questions C++