<html>
    <head>
      <base href="http://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 --- - fatal error: error in backend: Cannot select: intrinsic %llvm.arm.mcr"
   href="http://llvm.org/bugs/show_bug.cgi?id=22560">22560</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>fatal error: error in backend: Cannot select: intrinsic %llvm.arm.mcr
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>3.5
          </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>LLVM Codegen
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>asg.msft@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Issue: When the first argument to _MoveToCoProcessor instrinsic is passed via a
parent function argument, it results in a compile error.

Compilation error: fatal error: error in backend: Cannot select: intrinsic
%llvm.arm.mcr

Clang Version: 
clang version 3.5.0 (217039)
Target: armv7-none-linux-androideabi
Thread model: posix

Code (myfunc.cpp):

void MyFunc(const unsigned int x)
{
    _MoveToCoprocessor(x, 2, 3, 4, 5, 6); // this doesn't compile
}

Compilation command:
%PATH%\clang++.exe -c myfunc.cpp -o myfunc.o -target
armv7-none-linux-androideabi -fms-extensions

The following code doesn't give a compile error:

const unsigned int x = 0; // this compiles fine
void MyFunc()
{
    _MoveToCoprocessor(x, 2, 3, 4, 5, 6);
}

Thanks.</pre>
        </div>
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