<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/102142>102142</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [LV] Does the loop fail to vectorize because alias ?
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

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

<pre>
    * test: https://gcc.godbolt.org/z/xPMb4YWWc
```
#define TOTAL_ATOMS 98282  // unroll it is const

typedef struct VECTOR {
    float x;  float y; float z;
} VECTOR;

int foo (int max_omp_threads, int total_atoms, VECTOR * restrict frc, VECTOR ** restrict tmp_frc) {
  for (int i = 0; i < total_atoms; i++) {
 // #pragma clang loop vectorize(assume_safety)
 for (int j = 0; j < max_omp_threads; j++) {
      frc[i].x += tmp_frc[j][i].x;
      frc[i].y += tmp_frc[j][i].y;
      frc[i].z += tmp_frc[j][i].z;
    }
  }
  
  return 0;
}
```

* I try to add the  #pragma clang loop vectorize(assume_safety) for the above kernel loop, and it can vectorize .but when comment it, it failed to vectorize
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJyUVF-P2zYM_zT0C9HAlv8_-CE5L8CAFjdshxZ7CmRZTnSTrUCi00s-_SCdL5d03QE1BIki-eM_0eTOqf0kZQP5BvI24jMdjG1OQz8MUWf6cwNsjSQdQbrGA9HRQboGtgW23Qux2pu-M5pWxu6BbS_Ati9_fOmyv799ExC3EK-hiJf1emVpLwc1SXx6fFp_3q2fHr_8hXXFKob4ahbnyRqtUREqh8JMjhZs2Ol8lL0c0JGdBeHX3x6eHv9EKDevYkTEQRtO-ALp5o0-e_qVvEC6qELZLvB3VtjVRDgYg8AqT478ZWfG444OVvLeAXtAzyZDXO84mTGw3gJha7TSkVWCcLDiXnQnpfG4Cxr1bfiDsW-OFULaYuxj9-TDnUvPBLYJ69bAUkRg6dHy_chRaD7tURtzxJMUZKy6SGAVd24e5c7xQdIZWL3Ab9w_v7t_Du5_LIQX_CyE8PnM8o2CvF29oFdJ22vG-eYZ8vYqvpb_P8jzx8jz_yMvHyMvd0go27fLLbmcVtJsp1CIa-P8vLmXFl_j70j2jGSQ9z3SQeKvv0d4CQ_lnTlJ_EfaSeoA8y3Fp97_IIJP70Zw1c2E3w9yQmHGUfoOotCthANXWvY-oqt61DdpX6c1j2STlIzVeVLUSXRo4qJIuzKTnBd1KbJSJFKm-cDipCuGpBaRaljMsriKiyTNkjRZdVVVlX1WdknRVWXBIYvlyJVeaX0a_WyIlHOzbJKYJRmLNO-kdmHkMDbJ7xikwJifQLbxoE_dvHeQxVo5cu9mSJEOs-rzV8hbbI10oUahmj7Huwyxk4LPTiLXijuEdBvNVjc_TDFFh7lbCTMC23pHy_HpaM2zFARsG8JzwLZL_KeG_RsAAP__yiWJuQ">