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    <head>
      <base href="https://llvm.org/bugs/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - llvm-cov report filtering without function coverage display"
   href="https://llvm.org/bugs/show_bug.cgi?id=31395">31395</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>llvm-cov report filtering without function coverage display
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>-New Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedclangbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>dane@mapbox.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>I've noticed that `llvm-cov report` shows per-file summaries when no source
files are passed. But when source files are passed, it seems to automatically
go into a new mode where per-function summaries are displayed. I think it would
be more ideal if function summaries were only enabled via an option. The reason
I think it would be better as an option is for the case where:

1. You want to filter out which source files contribute to the summary, but..
2. You don't want to see per-function output

Currently this appears not possible: you can't get per-function summary output
without manually passing source files. And you can't get per-file summary
output if you manually pass source files.

Here is a demonstration of the two modes
(<a href="https://gist.github.com/springmeyer/b5a46888bd330f42f6430d9b78a54ca3">https://gist.github.com/springmeyer/b5a46888bd330f42f6430d9b78a54ca3</a>). The
first is too verbose due to the function-summaries, and the latter is too
verbose due to dependency headers being included in the coverage report that
are not important.</pre>
        </div>
      </p>
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