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    <head>
      <base href="https://bugs.llvm.org/">
    </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 - [Windows] Implement priorities in llvm.global_ctors in MSVC environments"
   href="https://bugs.llvm.org/show_bug.cgi?id=38552">38552</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[Windows] Implement priorities in llvm.global_ctors in MSVC environments
          </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>Windows NT
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>enhancement
          </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>rnk@google.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The llvm.global_ctors array has three elements in each entry: initializer,
priority, and comdat key.

For Windows-MSVC environments, we do nothing with the priority, we put all
initializers in .CRT$XCU sections here:

static MCSectionCOFF *getCOFFStaticStructorSection(MCContext &Ctx,
                                                   const Triple &T, bool
IsCtor,
                                                   unsigned Priority,
                                                   const MCSymbol *KeySym,
                                                   MCSectionCOFF *Default) {
  if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment())
    return Ctx.getAssociativeCOFFSection(Default, KeySym, 0);

Oops.

It's tricky, becuase we have to turn a number from a name into a string that
sorts alphabetically between XCA and XCU. In particular, XCL is interesting,
because at that point, the CRT runs its initializers.</pre>
        </div>
      </p>


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