<html>
    <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 - clang-cl's intrin.h does not include several intrinsics for aarch64"
   href="https://bugs.llvm.org/show_bug.cgi?id=38726">38726</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>clang-cl's intrin.h does not include several intrinsics for aarch64
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </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>Headers
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>froydnj@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dmajor@mozilla.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Compiling a non-trivial file in Firefox with `clang-cl
--target=aarch64-pc-windows-msvc` gives:

In file included from
c:/mozilla-central/build/win32/crashinjectdll/crashinjectdll.cpp:6:
In file included from c:/mozilla-central/INC6\windows.h:171:
In file included from c:/mozilla-central/INC5\windef.h:24:
In file included from c:/mozilla-central/INC5\minwindef.h:182:
c:/mozilla-central/INC6\winnt.h(5832,21):  error: use of undeclared identifier
'_ReadStatusReg'
    return (DWORD64)_ReadStatusReg(ARM64_PMCCNTR_EL0);
                    ^
c:/mozilla-central/INC6\winnt.h(5849,5):  error: use of undeclared identifier
'_WriteStatusReg'
    _WriteStatusReg(ARM64_PMSELR_EL0, Counter);
    ^
c:/mozilla-central/INC6\winnt.h(5850,21):  error: use of undeclared identifier
'_ReadStatusReg'
    return (DWORD64)_ReadStatusReg(ARM64_PMXEVCNTR_EL0);
                    ^
c:/mozilla-central/INC6\winnt.h(22063,27):  error: use of undeclared identifier
'__getReg'
    return (struct _TEB *)__getReg(18);
                          ^
c:/mozilla-central/INC6\winnt.h(22072,23):  error: use of undeclared identifier
'__getReg'
    return ((PNT_TIB )__getReg(18))->FiberData;

The small sample of files that I have attempted to compile indicate that these
are the only problematic intrinsics.</pre>
        </div>
      </p>


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