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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 - llc -stop-after broken after "Introduce CodeGenPassBuilder to help build codegen pipeline""
   href="https://bugs.llvm.org/show_bug.cgi?id=48757">48757</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>llc -stop-after broken after "Introduce CodeGenPassBuilder to help build codegen pipeline"
          </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>Matthew.Arsenault@amd.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>aeubanks@google.com, llvm-bugs@lists.llvm.org, yuanfang.chen@sony.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=24381" name="attach_24381" title="Testcase">attachment 24381</a> <a href="attachment.cgi?id=24381&action=edit" title="Testcase">[details]</a></span>
Testcase

Recently I've been having trouble using -stop-before and -stop-after, with an
error that the pass is not run:

$ llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx906
-start-before=si-form-memory-clauses  -stop-after=virtregrewriter -o /dev/null
/tmp/stop-after-memory-clauses.mir
LLVM ERROR: Cannot stop compilation after pass that is not run


Reverting this commit seems to fix it:
commit 480936e741d588d53b9e2d9c5935b5daa0fdee25
Author: Yuanfang Chen <<a href="mailto:yuanfang.chen@sony.com">yuanfang.chen@sony.com</a>>
Date:   Tue Dec 29 16:30:16 2020 -0800

    Reland "[NewPM][CodeGen] Introduce CodeGenPassBuilder to help build codegen
pipeline" (again)

    This reverts commit 16c8f6e91344ec9840d6aa9ec6b8d0c87a104ca3 with fix.

    -Wswitch catched an unhandled enum value due to recent commits in
    TargetPassConfig.cpp.</pre>
        </div>
      </p>


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