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      <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 Windows 64 bit installer overrides values from the 32 bit installer"
   href="https://llvm.org/bugs/show_bug.cgi?id=26212">26212</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>LLVM Windows 64 bit installer overrides values from the 32 bit installer
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Packaging
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>Windows Installer
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>cristian.adam@gmail.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 have downloaded the official LLVM 3.7.1 32 and 64 bit windows installers.

Environment: Windows 10 64 bit.

First I have installed the 32 bit LLVM 3.7.1. The following registry key
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\LLVM\LLVM had the default value set to:
"C:\Program Files (x86)\LLVM"

Then I have installed the 64 bit LLVM 3.7.1. The first thing that popped up was
this dialog:

---------------------------
LLVM Setup
---------------------------
LLVM is already installed. 

Do you want to uninstall the old version before installing the new one?
---------------------------
Yes   No   Cancel   
---------------------------

I have clicked on "No". 

The registry key HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\LLVM\LLVM defaul t
value was changed to "C:\Program Files\LLVM".

Please make sure that the 64 bit installer checks and writes to the 64 bit
registry "HKEY_LOCAL_MACHINE\SOFTWARE\LLVM\LLVM".

These paths are needed by tools to query the existence of LLVM on Windows.

For more information see: 
<a href="http://nsis.sourceforge.net/Reference/SetRegView">http://nsis.sourceforge.net/Reference/SetRegView</a>

and the x64.nsh NSIS include
<a href="http://forums.winamp.com/showthread.php?threadid=301724">http://forums.winamp.com/showthread.php?threadid=301724</a></pre>
        </div>
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