<html>
    <head>
      <base href="https://llvm.org/bugs/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - MI Parser can't read in block frequencies"
   href="https://llvm.org/bugs/show_bug.cgi?id=28751">28751</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>MI Parser can't read in block frequencies
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libraries
          </td>
        </tr>

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

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

        <tr>
          <th>OS</th>
          <td>Linux
          </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>Common Code Generator Code
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>diana.picus@linaro.org
          </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>Created <span class=""><a href="attachment.cgi?id=16829" name="attach_16829" title="mir file that can't be read by llc">attachment 16829</a> <a href="attachment.cgi?id=16829&action=edit" title="mir file that can't be read by llc">[details]</a></span>
mir file that can't be read by llc

llc -mtriple=aarch64-unknown buggy.mir              
error: buggy.mir:50:39: unexpected character '/'
    successors: %bb.1.true(0x40000000 / 0x80000000 = 50.00%),
%bb.2.false(0x40000000 / 0x80000000 = 50.00%)
                                      ^

LLVM ERROR: Unable to initialize machine function


The input mir file was obtained by running llc -mtriple=aarch64-unknown
-stop-after=block-placement <some .ll file> -o buggy.mir.

If we remove the block frequencies from the file, it manages to read it, but
the output that it produces also contains block frequencies, so it can't be
read back in.</pre>
        </div>
      </p>
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