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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/98513] [10/11 Regression] Wrong code with -O3
 since r10-2804-gbf05a3bbb58b3558
Date: Mon, 04 Jan 2021 16:24:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98513

--- Comment #2 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
Even more reduced test-case:

$ cat combined.cc
unsigned var;
unsigned array[2];
int zero =3D 0, minus_2 =3D -2;

const int &max(const int &a, const int &b) { return a > b ? a : b; }

void test(int minus_1)
{
  for (unsigned i_0 =3D 0; i_0 < 2; i_0++)
    {
      for (int i_3 =3D 0; i_3 < zero; i_3++)
        for (int i_4 =3D 0; i_4 < 2; i_4++)
          var =3D max(minus_1, 0);

      for (int i_6 =3D minus_2 + 2; i_6 < minus_1 + 3; i_6++)
        array[i_6] =3D zero;
    }
}

int main() { test(-1); }=