<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/122496>122496</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang] Miscompilation at -O2/3
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          cardigan1008
      </td>
    </tr>
</table>

<pre>
    This code prints 0 at `-O0/1` and triggers SIGKILL at `-O2/3`:

```c
int printf(const char *, ...);
int a;
short b, c;
long e;
int f[8][1];
unsigned g;
int h(int i) {
  long d = 0;
  for (; (a -= i) >= 0; d += 6)
    ;
  return d;
}
void j() {
  g = 0;
  for (; h(90) + g <= 0; g++) {
    int k = -1;
    b = 0;
    for (; k + g - -1 + b <= 3; b++)
      f[b + 3][0] = c;
    for (; b + g - 3 + e <= 8; e++)
      ;
 for (; e <= 3;)
      ;
  }
}
int main() {
  j();
  printf("%d\n", f[0][0]);
}
```

Compiler Explorer: https://godbolt.org/z/3x8Yc3fnW

It seems to be a recent regression. 
</pre>
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