<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=http://email.email.llvm.org/c/eJy1Vk2P4ygQ_TXOpRTLxsYfBx-mk8loNCPtYffSpxUG7LBjmwhwOtu_fgsncZz0qKXVTEuoDNTj8ShCVWot_q2-OrBS9hachloCAyO5HBx-WiOtVXoIg2gbRJ8uNosu7TykTzQvArqFgFDgHRta9wPWx7N3GsNRGk8DMQ2jMEJgsXfuYIPkU0B22Frl9mMdct3joOuO18_6YPQ_krsQASCjJhYiigvslCnLRVamNc9iWuaUJzgmmSgljQJSnvf-i5lWOtwETkX2d5aux-HHoF-GdaeG8bRuh_GC2xvJBPRayM6jD9qq09n1dbCOdZ0UW2W8y-vSnHX4tePr-trXh2Z8fcVOrYbzwp0eBwGcDUIJ5iR82WxAncmYw1BcyEZrPKWqfRA4R6uyIlsIJLviFwkvZ19SZh9AGeLV_n7a_AMoP0bp5Zr-lB3-XqX4XRI3s7h-7JzyC5EoDJKnII36LH0PlZALDDvvwE4z7nQFzqd4b9Pp4ZfXh_-zuTkZ_BGB7TESIUcOJCI7FurR3dYU0ds18bzmBouvMKd6iQywtlACfaT8pvybXawjb2Xe5jhz91spTH4Hg7bBTMU13iLwPTMIxny1gTAMfY7BaMxo5udrCJItUN_l3ghvpDfN5FmTuzU9w2RBCqSCIL_MAzTa71P4ODVnQ56mdocC8AztRBvPrADfY59TZ9CCTHjUNTMCLLx8Yok8aLqe85g9gAHai5LkQYWa8HKy9VILudNSz9ssljdegCfY-LjdbdhqLEff45_g8dgkw4afWL4JDNyuLiAEqwFZXtaSm9zNBvn2UaxaABZuI91ohsVRZt9jaTxnGaN72Oj-oDpp4PPp0Gkjp2ryUAS1qHXnQm0w0jtfTZ6fv9GjTZ5fV6JKRJmUbMVGt9emet3LQeihteNqNF31_6qprzLWjtJih6YRSVb7irKszhNax6RgNM0ETRMpGl5I2eQyp-WqY7XsbIUvByM6yBeYKHx06Xb16wpURSLiWxLTKE7jMGKkydOM0iLlWSQYZh6JL6YLPY-P0cpUE2U9thadnbLO3pwM_7e0g5STYFTolOtk9WIwZsCx0AO-eZ9iMCMCq_VRAv49eUzFsJpUVpPE_wBfkp05>54023</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            wrong code at -O1 and above on x86_64-linux-gnu 
        </td>
    </tr>

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

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

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

<pre>
    It seems to be a recent regression.

```
[578] % clangtk -v
clang version 15.0.0 (https://github.com/llvm/llvm-project.git e0f1dd018e0f94a7d694bc615975c3a7d26d9e50)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /local/suz-local/opfuzz/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
[579] % 
[579] % clangtk -O0 small.c; ./a.out
[580] % clangtk -O1 small.c
[581] % timeout -s 9 5 ./a.out
Killed
[582] % 
[582] % cat small.c
int printf(const char *, ...);
int a, b = 5, c, d, e, f = -2;
int main() {
  for (; f; f++) {
    int g = 1;
  L1:
    for (; d;)
      for (c = 0; c; c = a)
        g++;
    int i = e = b;
  L2:
    b = 0;
    if (i < 5)
      goto L1;
    if (g && !e) {
      printf("0");
      goto L2;
    }
    b = i;
  }
  return 0;
}
```

>From Compiler Explorer: https://godbolt.org/z/YYK5vs3Yz
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJy1Vk2P2zgM_TXOhYhhyx-xDz50kqYoWqCH3cucFrIkO2plK5DkTJpfv5STOE6mGKBoBxBoSXx8pKiITK35z-qzAytEZ8FpqAVQMIKJ3uGnNcJaqfswiDZB9OEi8-gyzsvsKVsVQbaBgGTAFO1b9wOWh7N2XMNBGE8DcRZGYYTAYufc3gbJh4BscbTS7YY6ZLrDhVKH62e5N_q7YC5EAIioiTmP4gInZUpXPC_TmuVxVq4yluCa5LwUWRSQ8uz7X2pa4dAJHIv8vzxdDv2PXr_0SyX74bhs--GC2xlBOXSaC-XRe23l8az63FtHlRJ8I41X-bg0owq_djgtr3O9b4bTCSe17M-GWz30HBjtueTUCfi0XoM8k1GHqbiQDdZ4Sln7JDCGUuZFPguQbIs_JLycfU6ZvwNliFf792lX70D5PpFerukfofD3KvjfCnE9BdcNyklviERhkDwFadTl6VuohFxgOHkDdpxwxytwOsVbTseHX14f_q_2pmLwLQLbYSZChhxIRLY01IO72RTRa5t4srnB4ivMyU4gAywtlJA9Un6R_s3O7MjrMG97jLp7VxKL396gbLBSMY23CGxHDYKxXq0hDENfYzAbE5r6_RqCZAOZnzIvuBfCi2bULMmdTUexWJACqSBYXfYBGu39FD5PzVmQp3HcoQA8QzvSxhMrwNfY19QJNCPjHnWtjAAzLRtZIg8ar-e8pg9ggPYSSfIQhRzxYpT1PBZyF0s9uZmZNz4AT7D2ebtz2GpsR1_jX-Dx2CTHgZ9YvEoM3K4uIAS7AZlf1pyb3O0Gq81jsHIGmKmNcIPpZ0eZdI-t8VxljO5grbu9VMLAx-NeaSPGbvLQBDWvtXKhNpjpre8mz89fsoNNnk8LXiW8TEq6cNIpUb0YjV2VYcMC_O36p4IvG2itDwKwzT6WFFgMRlW_13J9K7J2EBYnWRqRZLGryrRoirRMmow3NCoZ401NCVllPKFJkrOForVQtsLnhWnvxQuMFP4Kss1CViQifiRxFsVpHEaUNKs0z7IiZXnEKRYXgY9ChT4On4aFqcaQ6qG1qFTSOntTUvxr0vZCjO6Qnw5up0112omeY3rssBi9V2P0_wM2Lofz">