[Bug middle-end/81914] [7/8 Regression] gcc 7.1 generates branch for code which was branchless in earlier gcc version

[bugzi...@poradnik-webmastera.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81914

--- Comment #9 from Daniel Fruzynski <bugzi...@poradnik-webmastera.com> ---
In the meantime I found another case when gcc 7 inserts lots of jumps. I am not
sure if your extra test cases covers it too:

#include <stdint.h>

int test(int data1[9][9], int data2[9][9])
{
  uint64_t b1 = 0, b2 = 0;
  for (int n = 0; n < 9; ++n)
  {
    for (int k = 0; k < 9; ++k)
    {
      int a = data1[n][k] * 9 + data2[n][k];
      (a < 64 ? b1 : b2) |= 1 << (a & 63);
    }
  }
  return __builtin_popcount(b1) + __builtin_popcount(b2);
}