[Bug tree-optimization/112579] bb vectorizer failed to reduction sum += inv >> {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}

[liuhongt at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112579

--- Comment #2 from liuhongt at gcc dot gnu.org ---
Got vectorized after change source code to

unsigned
foo (unsigned * restrict s, unsigned qh, unsigned * restrict qs) {
  unsigned int sumi = 0;

  sumi += (qh >> 16);
  sumi += (qh >> 1);
  sumi += (qh >> 2);
  sumi += (qh >> 3);
  sumi += (qh >> 4);
  sumi += (qh >> 5);
  sumi += (qh >> 6);
  sumi += (qh >> 7);
  sumi += (qh >> 8);
  sumi += (qh >> 9);
  sumi += (qh >> 10);
  sumi += (qh >> 11);
  sumi += (qh >> 12);
  sumi += (qh >> 13);
  sumi += (qh >> 14);
  sumi += (qh >> 15);
  return sumi;
}