[Bug tree-optimization/103941] New: uavgv2qi3_ceil is not used

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103941

            Bug ID: 103941
           Summary: uavgv2qi3_ceil is not used
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ubizjak at gmail dot com
  Target Milestone: ---

Following testcase:

unsigned char ur[16], ua[16], ub[16];

void avgu_v2qi (void)
{
  int i;

  for (i = 0; i < 2; i++)
    ur[i] = (ua[i] + ub[i] + 1) >> 1;
}

does not vectorize on x86_64-linux-gnu with -O2 -ftree-vectorize.