<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/60593>60593</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            llvm-profdata.exe built without Zlib can't parse a profraw built with default settings
        </td>
    </tr>

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

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

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

<pre>
    Version of LLVM:
 LLVM-15.0.7-win64.exe
OS:
Windows 10 and 11

How I built my project
`gn gen out/Release --args="is_debug=false use_clang_coverage=true"
`
command run:
`llvm-profdata.exe merge -o coverage.profdata default.profraw
`
Error:
```
warning: default.profraw: profile uses zlib compression but the profile reader was built without zlib support
error: no profile can be merged
```

Mitigation steps:
https://lists.llvm.org/pipermail/llvm-dev/2017-July/115565.html
Looks like I would have to recompile my project so that proraws are not compressed for Windows. Or build LLVM myself?

Expected Behavior:
On both Linux and MacOS I can run the profraw attached in the zip  through llvm-profdata

Expected Fix. add Zlib support for the Windows build.

[default.zip](https://github.com/llvm/llvm-project/files/10679786/default.zip)

</pre>
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