/* Compile with:

Note: I have a version of clang installed grater than 3.6 at a specific location.

/opt/llvmbuild/bin/clang++ -O3 -Rpass-missed=loop-vectorize -Rpass=loop-vectorize -Rpass-analysis=loop-vectorize vectorize.cpp -o vectorize
*/
#include <iostream>

void doWork(int length){
#pragma clang loop vectorize(enable)
     for(int i= 0; i < length; i++){
	  std::cout << i;
     }
}

int main(){

     int val;

     doWork(val);

     return 0;
}